flash_v2: packages/io/flash/current/src/flash.c annotate

annotate packages/io/flash/current/src/flash.c @ 1763:42c8ea63b78d

Eliminate hwr_map_error() from the V2 driver interface, it no longer serves any useful purpose

author	bartv
date	Mon, 29 Nov 2004 14:49:20 +0000
parents	9c1d9e5039c2
children	96ec7e534d98

rev	line source
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	2 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	3 // flash.c
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	4 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	5 // Flash programming
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	6 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	11 // Copyright (C) 2004 Andrew Lunn
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	12 // Copyright (C) 2004 eCosCentric Ltd.
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	13 // Copyright (C) 2003 Gary Thomas
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	15 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	16 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	17 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	18 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	19 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	23 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	24 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	25 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	26 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	28 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	29 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	30 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	31 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	32 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	33 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	34 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	36 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	37 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	38 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	40 // at http://sources.redhat.com/ecos/ecos-license/
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	41 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	42 //####ECOSGPLCOPYRIGHTEND####
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	43 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	44 //#####DESCRIPTIONBEGIN####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	45 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	46 // Author(s): gthomas
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	47 // Contributors: gthomas, Andrew Lunn, Bart Veer
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	48 // Date: 2000-07-26
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	49 // Purpose:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	50 // Description:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	51 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	52 //####DESCRIPTIONEND####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	53 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	54 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	55
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	56 #include <pkgconf/system.h>
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	57 #include <pkgconf/io_flash.h>
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	58 #ifdef CYGPKG_KERNEL
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	59 #include <cyg/kernel/kapi.h>
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	60 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	61 #include <cyg/hal/hal_arch.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	62 #include <cyg/hal/hal_intr.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	63 #include <cyg/hal/hal_cache.h>
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	64 #include <cyg/hal/hal_tables.h>
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	65 #include <cyg/infra/cyg_ass.h>
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 177 diff changeset	66 #include <string.h>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	67
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	68 #define _FLASH_PRIVATE_
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	69 #include <cyg/io/flash.h>
1750 fac0499dabd6 Move legacy macros from a public to an internal header file, to bartv parents: 1749 diff changeset	70 #include "flash_legacy.h"
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	71
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	72 // When this flag is set, do not actually jump to the relocated code.
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	73 // This can be used for running the function in place (RAM startup
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	74 // only), allowing calls to diag_printf() and similar.
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	75 #undef RAM_FLASH_DEV_DEBUG
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	76 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	77 # warning "Can only enable the flash debugging when configured for RAM startup"
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	78 #endif
1400 707a873489c8 * src/flash.c: gcc 3.x vs gcc 2.x problems. asl parents: 1389 diff changeset	79
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	80 // Optional verbosity. Using a macro here avoids lots of ifdefs in the
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	81 // rest of the code.
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	82 #ifdef CYGSEM_IO_FLASH_CHATTER
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	83 # define CHATTER(_dev_, _fmt_, ...) (*(_dev_)->pf)((_fmt_), ## __VA_ARGS__)
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	84 #else
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	85 # define CHATTER(_dev_, _fmt_, ...) CYG_EMPTY_STATEMENT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	86 #endif
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	87
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	88 // Per-thread locking. Again using macros avoids lots of ifdefs
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	89 #ifdef CYGPKG_KERNEL
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	90 # define LOCK_INIT(_dev_) cyg_mutex_init(&((_dev_)->mutex))
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	91 # define LOCK(_dev_) cyg_mutex_lock(&((_dev_)->mutex))
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	92 # define UNLOCK(_dev_) cyg_mutex_unlock(&((_dev_)->mutex))
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	93 #else
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	94 # define LOCK_INIT(_dev_) CYG_EMPTY_STATEMENT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	95 # define LOCK(_dev_) CYG_EMPTY_STATEMENT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	96 # define UNLOCK(_dev_) CYG_EMPTY_STATEMENT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	97 #endif
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	98
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	99 // Software write-protect. Very rarely used.
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	100 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	101 # define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) \
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	102 CYG_MACRO_START \
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	103 if (plf_flash_query_soft_wp((_addr_), (_len_))) \
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	104 return CYG_FLASH_ERR_PROTECT; \
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	105 CYG_MACRO_END
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	106 #else
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	107 #define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) CYG_EMPTY_STATEMENT
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	108 #endif
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	109
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	110 // Has the FLASH IO library been initialised?
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	111 static bool init = false;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	112
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	113 // This array contains entries for all flash devices that are
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	114 // installed in the system.
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	115 __externC struct cyg_flash_dev cyg_flashdevtab[];
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	116 CYG_HAL_TABLE_BEGIN(cyg_flashdevtab, cyg_flashdev);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	117
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	118 // end of the flashdev table
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	119 __externC struct cyg_flash_dev cyg_flashdevtab_end;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	120 CYG_HAL_TABLE_END(cyg_flashdevtab_end, cyg_flashdev);
1400 707a873489c8 * src/flash.c: gcc 3.x vs gcc 2.x problems. asl parents: 1389 diff changeset	121
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	122 #if (1 == CYGHWR_IO_FLASH_DEVICE)
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	123
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	124 // Optimize the code for a single flash device, which is the common case.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	125 // The flash subsystem must have been initialized, the single device must
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	126 // contain the specified address, and the device itself must have
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	127 // initialized successfully.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	128 static struct cyg_flash_dev*
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	129 find_dev(cyg_flashaddr_t addr, int* stat)
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	130 {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	131 if (!init) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	132 *stat = CYG_FLASH_ERR_NOT_INIT;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	133 return NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	134 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	135 if (! ((addr >= cyg_flashdevtab[0].start) && (addr <= cyg_flashdevtab[0].end))) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	136 *stat = CYG_FLASH_ERR_INVALID;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	137 return NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	138 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	139 if (! cyg_flashdevtab[0].init) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	140 *stat = CYG_FLASH_ERR_NOT_INIT;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	141 return NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	142 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	143 return &cyg_flashdevtab[0];
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	144 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	145
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	146 #else
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	147
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	148 // There are multiple devices. For convenience these are kept in a
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	149 // linked list, sorted by address. This is the head of the list
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	150 static struct cyg_flash_dev *flash_head = NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	151
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	152 static bool flash_sort_and_check(void)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	153 {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	154 bool moved;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	155 struct cyg_flash_dev dev, *previous_next;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	156
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	157 // Place all devices that initialised on the list, unsorted for now.
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	158 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	159 if (dev->init) {
9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	160 dev->next = flash_head;
9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	161 flash_head = dev;
9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	162 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	163 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	164
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	165 // If there are no devices, abort. This could happen because none
9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	166 // of the devices initialised.
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	167 if (flash_head == NULL) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	168 return false;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	169 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	170
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	171 // Sort the linked list into ascending order of flash address. Use a
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	172 // primitive ripple sort, but since we don't expect to have many
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	173 // devices this should be OK. This loop may run safely with just one
9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	174 // entry on the list.
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	175 do {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	176 moved=false;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	177 for (dev=flash_head, previous_next=&flash_head;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	178 dev->next;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	179 previous_next = &dev->next, dev=dev->next ){
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	180 if (dev->start > dev->next->start) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	181 *previous_next=dev->next;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	182 dev->next = (*previous_next)->next;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	183 (*previous_next)->next = dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	184 moved=true;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	185 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	186 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	187 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	188 } while (moved);
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	189
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	190 // Now walk the linked list and see if there are any overlaps in the
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	191 // addresses the devices claim to use using.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	192 for (dev=flash_head; dev->next; dev=dev->next){
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	193 if (dev->end >= dev->next->start)
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	194 return false;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	195 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	196 return true;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	197 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	198
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	199 // Find the device at the specified address, if any.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	200 static struct cyg_flash_dev*
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	201 find_dev(cyg_flashaddr_t addr, int* stat)
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	202 {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	203 struct cyg_flash_dev* dev;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	204 if (!init) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	205 *stat = CYG_FLASH_ERR_NOT_INIT;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	206 return NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	207 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	208 for (dev = flash_head; dev; dev = dev->next) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	209 if ((dev->start <= addr) && (addr <= dev->end)) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	210 return dev;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	211 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	212 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	213 *stat = CYG_FLASH_ERR_INVALID;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	214 return NULL;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	215 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	216
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	217 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	218
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	219 // Initialise all registered device. Any device that fails to
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	220 // initialise we leave dev->init as false. Then sort the devices into
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	221 // ascending order of address and put them into a linked list. Lastly
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	222 // check if we have any overlap of the addresses.
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	223 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	224 cyg_flash_init(cyg_flash_printf *pf)
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	225 {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	226 int err;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	227 struct cyg_flash_dev * dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	228
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	229 if (init) return CYG_FLASH_ERR_OK;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	230
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	231 CYG_ASSERT(&(cyg_flashdevtab[CYGHWR_IO_FLASH_DEVICE]) == &cyg_flashdevtab_end, "incorrect number of flash devices");
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	232
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	233 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	234 dev->pf = pf;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	235 LOCK_INIT(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	236
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	237 err = dev->funs->flash_init(dev);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	238 if (err != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	239 continue;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	240 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	241 CYG_ASSERT(dev->funs, "No flash functions");
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	242 CYG_ASSERT(dev->num_block_infos, "No number of block infos");
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	243 CYG_ASSERT(dev->block_info, "No block infos");
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	244 CYG_ASSERT(!(((cyg_flashaddr_t)dev->block_info >= dev->start) &&
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	245 ((cyg_flashaddr_t)dev->block_info < dev->end)),
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	246 "Block info is in the flash");
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	247 CYG_ASSERT(dev->funs->flash_erase_block, "No erase function");
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	248 CYG_ASSERT(dev->funs->flash_program, "No program function");
1729 e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	249 #ifdef CYGDBG_USE_ASSERTS
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	250 {
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	251 int i;
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	252 cyg_flashaddr_t addr = dev->start;
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	253 for (i = 0; i < dev->num_block_infos; i++) {
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	254 addr += dev->block_info[i].block_size * dev->block_info[i].blocks;
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	255 }
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	256 CYG_ASSERT(dev->end == addr-1, "Invalid end address");
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	257 }
e290a0372578 * src/flash.c (cyg_flash_init): Add assert checking that the asl parents: 1723 diff changeset	258 #endif
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	259 dev->init = true;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	260 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	261
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	262 #if (1 == CYGHWR_IO_FLASH_DEVICE)
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	263 // Make sure there is one device, otherwise we could end up
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	264 // accessing a non-existent cyg_flash_dev structure.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	265 if (&(cyg_flashdevtab[0]) == &cyg_flashdevtab_end) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	266 return CYG_FLASH_ERR_INVALID;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	267 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	268 #else
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	269 // Place the devices on a sorted linked list and check that there
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	270 // are no overlaps in the address space.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	271 if (! flash_sort_and_check() ) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	272 return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	273 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	274 #endif
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	275
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	276 // Only mark the flash subsystem as initialized if the world is
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	277 // consistent.
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	278 init = true;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	279 return CYG_FLASH_ERR_OK;
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	280 }
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	281
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	282 // Is the address within one of the flash drivers?
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	283 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	284 cyg_flash_verify_addr(const cyg_flashaddr_t address)
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	285 {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	286 int stat = CYG_FLASH_ERR_OK;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	287 (void) find_dev(address, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	288 return stat;
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	289 }
6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	290
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	291 // Return information about the Nth driver
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	292 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	293 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info)
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	294 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	295 struct cyg_flash_dev * dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	296
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	297 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	298
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	299 #if (1 == CYGHWR_IO_FLASH_DEVICE)
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	300 if ((0 == Nth) && cyg_flashdevtab[0].init) {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	301 dev = &(cyg_flashdevtab[0]);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	302 } else {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	303 return CYG_FLASH_ERR_INVALID;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	304 }
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	305 #else
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	306 // Only initialized devices are on the list.
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	307 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--)
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	308 ;
1760 9abe5ac74a1a Correctly handle scenario where there are multiple flash devices but bartv parents: 1750 diff changeset	309 if (!dev) {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	310 return CYG_FLASH_ERR_INVALID;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	311 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	312 #endif
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	313 info->start = dev->start;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	314 info->end = dev->end;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	315 info->num_block_infos = dev->num_block_infos;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	316 info->block_info = dev->block_info;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	317 return CYG_FLASH_ERR_OK;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	318 }
157 b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST jlarmour parents: 156 diff changeset	319
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	320 // Return information about the flash at the given address
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	321 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	322 cyg_flash_get_info_addr(const cyg_flashaddr_t flash_base, cyg_flash_info_t * info)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	323 {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	324 struct cyg_flash_dev *dev;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	325 int stat = CYG_FLASH_ERR_OK;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	326
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	327 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	328 if (dev) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	329 info->start = dev->start;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	330 info->end = dev->end;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	331 info->num_block_infos = dev->num_block_infos;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	332 info->block_info = dev->block_info;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	333 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	334 return stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	335 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	336
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	337 #ifdef CYGPKG_KERNEL
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	338 // Lock the mutex's for a range of addresses
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	339 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	340 cyg_flash_mutex_lock(const cyg_flashaddr_t from, size_t len)
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	341 {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	342 struct cyg_flash_dev * dev;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	343 int stat = CYG_FLASH_ERR_OK;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	344
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	345 dev = find_dev(from, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	346 if (dev) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	347 LOCK(dev);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	348 if (len > (dev->end + 1 - from)) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	349 stat = cyg_flash_mutex_lock(dev->end + 1, len - (dev->end + 1 - from));
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	350 if (CYG_FLASH_ERR_OK != stat) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	351 // Something went wrong, unlock what we just locked
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	352 UNLOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	353 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	354 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	355 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	356 return stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	357 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	358
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	359 // Unlock the mutex's for a range of addresses
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	360 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	361 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, size_t len)
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	362 {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	363 struct cyg_flash_dev * dev;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	364 int stat = CYG_FLASH_ERR_OK;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	365
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	366 dev = find_dev(from, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	367 if (dev) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	368 UNLOCK(dev);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	369 if (len > (dev->end + 1 - from)) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	370 stat = cyg_flash_mutex_lock(dev->end + 1, len - (dev->end + 1 - from));
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	371 if (CYG_FLASH_ERR_OK != stat) {
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	372 // Something went wrong, relock what we just unlocked. This may not
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	373 // be worth it since things must be pretty messed up, and could
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	374 // conceivably end in deadlock if there is a concurrent call to
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	375 // cyg_flash_mutex_lock();
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	376 LOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	377 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	378 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	379 }
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	380 return stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	381 }
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	382 #endif
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	383
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	384 // Return the size of the block which is at the given address
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	385 static size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	386 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr)
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	387 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	388 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	389 size_t offset;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	390
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	391 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device");
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	392
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	393 offset = addr - dev->start;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	394 for (i=0; i < dev->num_block_infos; i++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	395 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size))
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	396 return dev->block_info[i].block_size;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	397 offset = offset -
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	398 (dev->block_info[i].blocks * dev->block_info[i].block_size);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	399 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	400 CYG_FAIL("Programming error");
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	401 return 0;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	402 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	403
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	404 // Return the size of the block which is at the given address
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	405 __externC size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	406 cyg_flash_block_size(const cyg_flashaddr_t flash_base)
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	407 {
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	408 struct cyg_flash_dev * dev;
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	409 int stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	410
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	411 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	412 if (!dev) return stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	413 return flash_block_size(dev, flash_base);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	414 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	415
1723 0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	416 // Return the first address of a block. The flash might not be aligned
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	417 // in terms of its block size. So we have to be careful and use
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	418 // offsets.
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	419 static inline cyg_flashaddr_t
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	420 flash_block_begin(cyg_flashaddr_t addr, struct cyg_flash_dev *dev)
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	421 {
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	422 size_t block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	423 cyg_flashaddr_t offset;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	424
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	425 block_size = flash_block_size(dev, addr);
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	426
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	427 offset = addr - dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	428 offset = (offset / block_size) * block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	429 return offset + dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	430 }
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	431
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	432
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	433 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	434 cyg_flash_erase(cyg_flashaddr_t flash_base,
80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	435 size_t len,
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	436 cyg_flashaddr_t *err_address)
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	437 {
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	438 cyg_flashaddr_t block, end_addr;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	439 struct cyg_flash_dev * dev;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	440 size_t erase_count;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	441 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	442 int d_cache, i_cache;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	443
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	444 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	445 if (!dev) return stat;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	446
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	447 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	448
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	449 LOCK(dev);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	450
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	451 // Check whether or not we are going past the end of this device, on
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	452 // to the next one. If so the next device will be handled by a
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	453 // recursive call later on.
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	454 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	455 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	456 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	457 end_addr = flash_base + len - 1;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	458 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	459 // erase can only happen on a block boundary, so adjust for this
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	460 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	461 erase_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	462
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	463 CHATTER(dev, "... Erase from %p-%p: ", (void)block, (void)end_addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	464
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	465 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	466 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	467 while (erase_count > 0) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	468 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	469 unsigned char *dp;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	470 bool erased = false;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	471 size_t block_size = flash_block_size(dev, block);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	472
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	473 // Pad to the block boundary, if necessary
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	474 if (erase_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	475 erase_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	476 }
1723 0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The asl parents: 1722 diff changeset	477
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	478 // If there is a read function it probably means the flash
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	479 // cannot be read directly.
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	480 if (!dev->funs->flash_read) {
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	481 erased = true;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	482 dp = (unsigned char *)block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	483 for (i = 0; i < block_size; i++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	484 if (*dp++ != (unsigned char)0xFF) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	485 erased = false;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	486 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	487 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	488 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	489 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	490 if (!erased) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	491 stat = dev->funs->flash_erase_block(dev,block);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	492 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	493 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	494 *err_address = block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	495 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	496 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	497 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	498 erase_count -= block_size;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	499 CHATTER(dev, ".");
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	500 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	501 FLASH_Disable(flash_base, end_addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	502 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	503 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	504 UNLOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	505 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	506 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	507 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	508
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	509 // If there are multiple flash devices in series the erase operation
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	510 // may touch successive devices. This can be handled by recursion.
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	511 // The stack overheads should be minimal because the number of
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	512 // devices will be small.
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	513 if (len > (dev->end + 1 - flash_base)) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	514 return cyg_flash_erase(dev->end+1,
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	515 len - (dev->end + 1 - flash_base),
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	516 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	517 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	518 return CYG_FLASH_ERR_OK;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	519 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	520
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	521 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	522 cyg_flash_program(cyg_flashaddr_t flash_base,
80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	523 const void *ram_base,
80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	524 size_t len,
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	525 cyg_flashaddr_t *err_address)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	526 {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	527 struct cyg_flash_dev * dev;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	528 cyg_flashaddr_t addr, end_addr, block;
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	529 const unsigned char * ram = ram_base;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	530 size_t write_count, offset;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	531 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	532 int d_cache, i_cache;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	533
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	534 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	535 if (!dev) return stat;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	536
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	537 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	538
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	539 LOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	540 addr = flash_base;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	541 if (len > (dev->end + 1 - flash_base)) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	542 end_addr = dev->end;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	543 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	544 end_addr = flash_base + len - 1;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	545 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	546 write_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	547
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	548 // The first write may be in the middle of a block. Do the necessary
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	549 // adjustment here rather than inside the loop.
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	550 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	551 if (addr == block) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	552 offset = 0;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	553 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	554 offset = addr - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	555 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	556
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	557 CHATTER(dev, "... Program from %p-%p to %p: ", ram_base, ((CYG_ADDRESS)ram_base)+write_count, addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	558
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	559 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	560 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	561 while (write_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	562 size_t block_size = flash_block_size(dev, addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	563 size_t this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	564 if (write_count > (block_size - offset)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	565 this_write = block_size - offset;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	566 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	567 this_write = write_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	568 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	569 // Only the first block may need the offset.
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	570 offset = 0;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	571
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	572 stat = dev->funs->flash_program(dev, addr, ram, this_write);
157 b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST jlarmour parents: 156 diff changeset	573 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	574 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	575 if (!dev->funs->flash_read && memcmp((void *)addr, ram, this_write) != 0) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	576 stat = CYG_FLASH_ERR_DRV_VERIFY;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	577 CHATTER(dev, "V");
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	578 }
157 b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST jlarmour parents: 156 diff changeset	579 #endif
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	580 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	581 *err_address = addr;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	582 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	583 }
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	584 CHATTER(dev, ".");
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	585 write_count -= this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	586 addr += this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	587 ram += this_write;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	588 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	589 FLASH_Disable(flash_base, end_addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	590 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	591 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	592 UNLOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	593 if (stat != CYG_FLASH_ERR_OK) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	594 return (stat);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	595 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	596 if (len > (dev->end + 1 - flash_base)) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	597 return cyg_flash_program(dev->end+1, ram,
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	598 len - (dev->end + 1 - flash_base),
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	599 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	600 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	601 return CYG_FLASH_ERR_OK;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	602 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	603
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	604 __externC int
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	605 cyg_flash_read(const cyg_flashaddr_t flash_base,
80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	606 void *ram_base,
80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	607 size_t len,
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	608 cyg_flashaddr_t *err_address)
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	609 {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	610 struct cyg_flash_dev * dev;
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	611 cyg_flashaddr_t addr, end_addr;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	612 unsigned char * ram = (unsigned char *)ram_base;
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	613 size_t read_count;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	614 int stat = CYG_FLASH_ERR_OK;
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	615
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	616 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	617 if (!dev) return stat;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	618
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	619 LOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	620 addr = flash_base;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	621 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	622 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	623 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	624 end_addr = flash_base + len - 1;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	625 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	626 read_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	627
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	628 CHATTER(dev, "... Read from %p-%p to %p: ", addr, end_addr, ram_base);
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	629
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	630 // If the flash is directly accessible, just read it in one go. This
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	631 // still happens with the mutex locked to protect against concurrent
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	632 // programs/erases.
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	633 if (! dev->funs->flash_read) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	634 memcpy(ram, (void*)addr, read_count);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	635 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	636 #ifndef CYGHWR_IO_FLASH_INDIRECT_READS
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	637 CYG_FAIL("read function supplied but indirect reads not enabled");
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	638 stat = CYG_FLASH_ERR_PROTOCOL;
1744 f854ed1e81db Fix reads on legacy devices bartv parents: 1743 diff changeset	639 if (err_address) {
f854ed1e81db Fix reads on legacy devices bartv parents: 1743 diff changeset	640 *err_address = addr;
f854ed1e81db Fix reads on legacy devices bartv parents: 1743 diff changeset	641 }
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	642 #else
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	643 // We have to indirect through the device driver.
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	644 // The first read may be in the middle of a block. Do the necessary
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	645 // adjustment here rather than inside the loop.
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	646 int d_cache, i_cache;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	647 size_t offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	648 cyg_flashaddr_t block = flash_block_begin(flash_base, dev);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	649 if (addr == block) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	650 offset = 0;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	651 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	652 offset = addr - block;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	653 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	654 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	655 FLASH_Enable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	656 while (read_count > 0) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	657 size_t block_size = flash_block_size(dev, addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	658 size_t this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	659 if (read_count > (block_size - offset)) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	660 this_read = block_size - offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	661 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	662 this_read = read_count;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	663 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	664 // Only the first block may need the offset
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	665 offset = 0;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	666
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	667 stat = dev->funs->flash_read(dev, addr, ram, this_read);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	668 if (CYG_FLASH_ERR_OK != stat && err_address) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	669 *err_address = addr;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	670 break;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	671 }
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	672 CHATTER(dev, ".");
1742 a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	673 read_count -= this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	674 addr += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	675 ram += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	676 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	677 FLASH_Disable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	678 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a668b95e5f2e Only include the support for indirect flash reads if there are devices bartv parents: 1741 diff changeset	679 #endif
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	680 }
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	681 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	682 UNLOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	683 if (stat != CYG_FLASH_ERR_OK) {
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	684 return (stat);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	685 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	686 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	687 return cyg_flash_read(dev->end+1, ram,
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	688 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	689 err_address);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	690 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	691 return CYG_FLASH_ERR_OK;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	692 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	693
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 174 diff changeset	694 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	695 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	696 cyg_flash_lock(const cyg_flashaddr_t flash_base,
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	697 size_t len,
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	698 cyg_flashaddr_t *err_address)
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	699 {
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	700 cyg_flashaddr_t block, end_addr;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	701 struct cyg_flash_dev * dev;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	702 size_t lock_count;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	703 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	704 int d_cache, i_cache;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	705
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	706 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	707 if (!dev) return stat;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	708 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	709
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	710 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	711
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	712 LOCK(dev);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	713 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	714 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	715 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	716 end_addr = flash_base + len - 1;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	717 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	718 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	719 lock_count = (end_addr + 1) - block;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	720
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	721 CHATTER(dev, "... Locking from %p-%p: ", (void)block, (void)end_addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	722
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	723 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	724 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	725 while (lock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	726 size_t block_size = flash_block_size(dev, block);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	727 if (lock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	728 lock_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	729 }
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	730 stat = dev->funs->flash_block_lock(dev,block);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	731
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	732 if (CYG_FLASH_ERR_OK != stat && err_address) {
1715 868c3fa9315f * src/flash.c: Make the flock lock/unlock code compile without asl parents: 1706 diff changeset	733 *err_address = block;
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	734 break;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	735 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	736 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	737 lock_count -= block_size;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	738 CHATTER(dev, ".");
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	739 }
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	740 FLASH_Disable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	741 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	742 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	743 UNLOCK(dev);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	744 if (stat != CYG_FLASH_ERR_OK) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	745 return stat;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	746 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	747
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	748 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	749 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	750 return cyg_flash_lock(dev->end+1,
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	751 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	752 err_address);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	753 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	754
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	755 return CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	756 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	757
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	758 __externC int
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	759 cyg_flash_unlock(const cyg_flashaddr_t flash_base,
1749 80232dbac7fb Flash API clean-ups bartv parents: 1747 diff changeset	760 size_t len,
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	761 cyg_flashaddr_t *err_address)
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	762 {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	763 cyg_flashaddr_t block, end_addr;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	764 struct cyg_flash_dev * dev;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	765 size_t unlock_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	766 int stat = CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	767 int d_cache, i_cache;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	768
1747 a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	769 dev = find_dev(flash_base, &stat);
a221170fac3d Add an optimization for the common case of a single flash device bartv parents: 1746 diff changeset	770 if (!dev) return stat;
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	771 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID;
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	772
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	773 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	774
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	775 LOCK(dev);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	776 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	777 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	778 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	779 end_addr = flash_base + len - 1;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	780 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	781 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	782 unlock_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	783
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	784 CHATTER(dev, "... Unlocking from %p-%p: ", (void)block, (void)end_addr);
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	785
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	786 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	787 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	788 while (unlock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	789 size_t block_size = flash_block_size(dev, block);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	790 if (unlock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	791 unlock_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	792 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	793 stat = dev->funs->flash_block_unlock(dev,block);
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	794
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	795 if (CYG_FLASH_ERR_OK != stat && err_address) {
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	796 *err_address = block;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	797 break;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	798 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	799 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	800 unlock_count -= block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	801
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	802 CHATTER(dev, ".");
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	803 }
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	804 FLASH_Disable(flash_base, end_addr);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	805 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743 0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	806 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to bartv parents: 1742 diff changeset	807 UNLOCK(dev);
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	808 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	809 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	810 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	811
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	812 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	813 if (len > (dev->end + 1 - flash_base)) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	814 return cyg_flash_lock(dev->end+1,
1741 9464c6747e99 Sort out the various loops to cope with boundary conditions, bartv parents: 1730 diff changeset	815 len - (dev->end + 1 - flash_base),
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	816 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	817 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	818 return CYG_FLASH_ERR_OK;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	819 }
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	820 #endif
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	821
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	822 const char *
3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	823 cyg_flash_errmsg(const int err)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	824 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	825 switch (err) {
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	826 case CYG_FLASH_ERR_OK:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	827 return "No error - operation complete";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	828 case CYG_FLASH_ERR_ERASE_SUSPEND:
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	829 return "Device is in erase suspend state";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	830 case CYG_FLASH_ERR_PROGRAM_SUSPEND:
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	831 return "Device is in program suspend state";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	832 case CYG_FLASH_ERR_INVALID:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	833 return "Invalid FLASH address";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	834 case CYG_FLASH_ERR_ERASE:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	835 return "Error trying to erase";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	836 case CYG_FLASH_ERR_LOCK:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	837 return "Error trying to lock/unlock";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	838 case CYG_FLASH_ERR_PROGRAM:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	839 return "Error trying to program";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	840 case CYG_FLASH_ERR_PROTOCOL:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	841 return "Generic error";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	842 case CYG_FLASH_ERR_PROTECT:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	843 return "Device/region is write-protected";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	844 case CYG_FLASH_ERR_NOT_INIT:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	845 return "FLASH sub-system not initialized";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	846 case CYG_FLASH_ERR_DRV_VERIFY:
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	847 return "Data verify failed after operation";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	848 case CYG_FLASH_ERR_DRV_TIMEOUT:
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	849 return "Driver timed out waiting for device";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	850 case CYG_FLASH_ERR_DRV_WRONG_PART:
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	851 return "Driver does not support device";
1706 3845779eca10 * src/flash.c: Major rewrite to implement a new API asl parents: 1675 diff changeset	852 case CYG_FLASH_ERR_LOW_VOLTAGE:
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 154 diff changeset	853 return "Device reports low voltage";
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	854 default:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	855 return "Unknown error";
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	856 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	857 }
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	858
1762 9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	859 // Dummy routines to put into the device function tables, to handle
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	860 // unsupported/unnecessary functionality. For example not all devices
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	861 // support block locking.
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	862 //
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	863 // A dummy initialization routine, for platforms where everything is
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	864 // done statically and there is no need to check device ids or
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	865 // anything similar.
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	866 int
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	867 cyg_flash_devfn_init_nop(struct cyg_flash_dev* dev)
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	868 {
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	869 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	870 return CYG_FLASH_ERR_OK;
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	871 }
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	872
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	873 // A dummy query routine. The implementation of this is specific to
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	874 // each device driver, so some device drivers may choose to do
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	875 // nothing.
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	876 size_t
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	877 cyg_flash_devfn_query_nop(struct cyg_flash_dev* dev, void* data, size_t len)
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	878 {
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	879 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	880 CYG_UNUSED_PARAM(void*, data);
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	881 CYG_UNUSED_PARAM(size_t, len);
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	882 return 0;
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	883 }
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	884
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	885 // Dummy lock/unlock routines
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	886 int
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	887 cyg_flash_devfn_lock_nop(struct cyg_flash_dev* dev, const cyg_flashaddr_t addr)
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	888 {
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	889 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
1763 42c8ea63b78d Eliminate hwr_map_error() from the V2 driver interface, it no longer bartv parents: 1762 diff changeset	890 CYG_UNUSED_PARAM(cyg_flashaddr_t, addr);
1762 9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	891 return CYG_FLASH_ERR_DRV_WRONG_PART;
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	892 }
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	893
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	894 int
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	895 cyg_flash_devfn_unlock_nop(struct cyg_flash_dev* dev, const cyg_flashaddr_t addr)
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	896 {
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	897 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
1763 42c8ea63b78d Eliminate hwr_map_error() from the V2 driver interface, it no longer bartv parents: 1762 diff changeset	898 CYG_UNUSED_PARAM(cyg_flashaddr_t, addr);
1762 9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	899 return CYG_FLASH_ERR_DRV_WRONG_PART;
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	900 }
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	901
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	902 // On some architectures there are problems calling the .2ram
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	903 // functions from the main ones. Specifically the compiler may issue a
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	904 // short call, even though the flash and ram are too far apart. The
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	905 // solution is to indirect via a function pointer, but the simplistic
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	906 // approach is vulnerable to compiler optimization. Hence the function
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	907 // pointer is passed through an anonymizer.
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	908 void*
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	909 cyg_flash_anonymizer(void* fn)
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	910 {
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	911 return fn;
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	912 }
9c1d9e5039c2 Move dummy init/query/lock/unlock functions to the generic flash code, bartv parents: 1760 diff changeset	913
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	914 // EOF io/flash/..../flash.c

Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 1763:42c8ea63b78d