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The generic jedec.c does not work for the ST M50FLW flash 

devices, because they need an unlock command first.
For this reason, ST M50FLW support is moved to a
new HW support module, because any change in jedec.c
would bear the risk to cause problems with the already
supported devices.

It's already tested with ST M50FLW080A; the other
chips of this family i dont have available, so i couldnt
test it.

Signed-off-by: Claus Gindhart <claus.gindhart@kontron.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3274 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Claus Gindhart 2008-04-28 17:51:09 +00:00 committed by Stefan Reinauer
parent 26e08b5abe
commit b19973eb8b
4 changed files with 307 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
util/flashrom/Makefile
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@ -16,15 +16,15 @@ OS_ARCH = $(shell uname)
ifeq ($(OS_ARCH), SunOS) ifeq ($(OS_ARCH), SunOS)
LDFLAGS = -lpci -lz LDFLAGS = -lpci -lz
else else
LDFLAGS = -lpci -lz -static LDFLAGS = -lpci -lz
STRIP_ARGS = -s STRIP_ARGS = -s
endif endif
OBJS = chipset_enable.o board_enable.o udelay.o jedec.o sst28sf040.o \ OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.c \
am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o w49f002u.o \ sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
82802ab.o msys_doc.o pm49fl004.o sst49lf040.o sst49lfxxxc.o \ w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o \
sst_fwhub.o layout.o cbtable.o flashchips.o flashrom.o \ sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
w39v080fa.o sharplhf00l04.o w29ee011.o spi.o flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o
all: pciutils dep $(PROGRAM) all: pciutils dep $(PROGRAM)

4
util/flashrom/flash.h
View File

@ -427,4 +427,8 @@ int probe_w29ee011(struct flashchip *flash);
/* w49f002u.c */ /* w49f002u.c */
int write_49f002(struct flashchip *flash, uint8_t *buf); int write_49f002(struct flashchip *flash, uint8_t *buf);
/* stm50flw0x0x.c */
int probe_stm50flw0x0x(struct flashchip *flash);
int erase_stm50flw0x0x(struct flashchip *flash);
int write_stm50flw0x0x(struct flashchip *flash, uint8_t *buf);
#endif /* !__FLASH_H__ */ #endif /* !__FLASH_H__ */

8
util/flashrom/flashchips.c
View File

@ -102,10 +102,10 @@ struct flashchip flashchips[] = {
{"ST", "M29F400BT", ST_ID, ST_M29F400BT, 512, 64 * 1024, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt}, {"ST", "M29F400BT", ST_ID, ST_M29F400BT, 512, 64 * 1024, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt},
{"ST", "M29W010B", ST_ID, ST_M29W010B, 128, 16 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M29W010B", ST_ID, ST_M29W010B, 128, 16 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
{"ST", "M29W040B", ST_ID, ST_M29W040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M29W040B", ST_ID, ST_M29W040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
{"ST", "M50FLW040A", ST_ID, ST_M50FLW040A, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M50FLW040A", ST_ID, ST_M50FLW040A, 512, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
{"ST", "M50FLW040B", ST_ID, ST_M50FLW040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M50FLW040B", ST_ID, ST_M50FLW040B, 512, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
{"ST", "M50FLW080A", ST_ID, ST_M50FLW080A, 1024, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M50FLW080A", ST_ID, ST_M50FLW080A, 1024, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
{"ST", "M50FLW080B", ST_ID, ST_M50FLW080B, 1024, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, {"ST", "M50FLW080B", ST_ID, ST_M50FLW080B, 1024, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
{"ST", "M50FW016", ST_ID, ST_M50FW016, 2048, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab}, {"ST", "M50FW016", ST_ID, ST_M50FW016, 2048, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
{"ST", "M50FW040", ST_ID, ST_M50FW040, 512, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab}, {"ST", "M50FW040", ST_ID, ST_M50FW040, 512, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
{"ST", "M50FW080", ST_ID, ST_M50FW080, 1024, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab}, {"ST", "M50FW080", ST_ID, ST_M50FW080, 1024, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},

293
util/flashrom/stm50flw0x0x.c Normal file
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@ -0,0 +1,293 @@
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/*
* This module is designed for supporting the devices
* ST M50FLW040A (not yet tested)
* ST M50FLW040B (not yet tested)
* ST M50FLW080A
* ST M50FLW080B (not yet tested)
*
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "flash.h"
void protect_stm50flw0x0x(volatile uint8_t *bios)
{
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0xA0;
usleep(200);
}
int probe_stm50flw0x0x(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
uint8_t id1, id2;
uint32_t largeid1, largeid2;
/* Issue JEDEC Product ID Entry command */
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile uint8_t *)(bios + 0x5555) = 0x90;
myusec_delay(40);
/* Read product ID */
id1 = *(volatile uint8_t *)bios;
id2 = *(volatile uint8_t *)(bios + 0x01);
largeid1 = id1;
largeid2 = id2;
/* Check if it is a continuation ID, this should be a while loop. */
if (id1 == 0x7F) {
largeid1 <<= 8;
id1 = *(volatile uint8_t *)(bios + 0x100);
largeid1 |= id1;
}
if (id2 == 0x7F) {
largeid2 <<= 8;
id2 = *(volatile uint8_t *)(bios + 0x101);
largeid2 |= id2;
}
/* Issue JEDEC Product ID Exit command */
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
myusec_delay(40);
printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, largeid1,
largeid2);
if (largeid1 != flash->manufacture_id || largeid2 != flash->model_id)
return 0;
map_flash_registers(flash);
return 1;
}
static void wait_stm50flw0x0x(volatile uint8_t *bios)
{
uint8_t id1;
// id2;
*bios = 0x70;
if ((*bios & 0x80) == 0) { // it's busy
while ((*bios & 0x80) == 0) ;
}
// put another command to get out of status register mode
*bios = 0x90;
myusec_delay(10);
id1 = *(volatile uint8_t *)bios;
// this is needed to jam it out of "read id" mode
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
}
/*
* claus.gindhart@kontron.com
* The ST M50FLW080B and STM50FLW080B chips have to be unlocked,
* before you can erase them or write to them
*/
int unlock_block_stm50flw0x0x(struct flashchip *flash, int offset)
{
volatile uint8_t *flash_addr = flash->virtual_registers + 2;
const uint8_t unlock_sector = 0x00;
int j;
/* These chips have to be unlocked before you can erase
* them or write to them
* The size of the locking sectors depends on the type
* of chip
*
* Sometimes, the BIOS does this for you; so you propably
* dont need to worry about that
*/
/* check, if it's is a top/bottom-block with 4k-sectors */
/* TODO: What about the other types ? */
if ((offset == 0) ||
(offset == (flash->model_id == ST_M50FLW080A ? 0xE0000 : 0x10000))
|| (offset == 0xF0000)) {
// unlock each 4k-sector
for (j = 0; j < 0x10000; j += 0x1000) {
printf_debug("unlocking at 0x%x\n", offset + j);
*(flash_addr + offset + j) = unlock_sector;
if (*(flash_addr + offset + j) != unlock_sector)
{
printf("Cannot unlock sector @ 0x%x\n",offset + j);
return -1;
}
}
} else {
printf_debug("unlocking at 0x%x\n", offset);
*(flash_addr + offset) = unlock_sector;
if (*(flash_addr + offset) != unlock_sector)
{
printf("Cannot unlock sector @ 0x%x\n", offset);
return -1;
}
}
return 0;
}
int erase_block_stm50flw0x0x(struct flashchip *flash, int offset)
{
volatile uint8_t *bios = flash->virtual_memory + offset;
int j;
// clear status register
*bios = 0x50;
printf_debug("Erase at %p\n", bios);
// now start it
*(volatile uint8_t *)(bios) = 0x20;
*(volatile uint8_t *)(bios) = 0xd0;
myusec_delay(10);
wait_stm50flw0x0x(flash->virtual_memory);
for (j = 0; j < flash->page_size; j++) {
if (*(bios + j) != 0xFF) {
printf("Erase failed at 0x%x\n", offset + j);
return -1;
}
}
printf("DONE BLOCK 0x%x\n", offset);
return 0;
}
int write_page_stm50flw0x0x(volatile uint8_t *bios, uint8_t *src,
volatile uint8_t *dst, int page_size)
{
int i, rc=0;
volatile uint8_t *d = dst;
uint8_t *s = src;
/* transfer data from source to destination */
for (i = 0; i < page_size; i++) {
*dst = 0x40;
*dst++ = *src++;
wait_stm50flw0x0x(bios);
}
/* claus.gindhart@kontron.com
* TODO
* I think, that verification is not required, but
* i leave it in anyway
*/
dst = d;
src = s;
for (i = 0; i < page_size; i++) {
if (*dst != *src) {
rc = -1;
break;
}
dst++;
src++;
}
if (rc) {
fprintf(stderr, " page %d failed!\n",
(unsigned int)(d - bios) / page_size);
}
return rc;
}
/* I simply erase block by block
* I Chip This is not the fastest way, but it works
*/
int erase_stm50flw0x0x(struct flashchip *flash)
{
int i,rc=0;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
printf("Erasing page:\n");
for (i = 0;(i < total_size / page_size) && (rc==0); i++) {
printf
("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
printf("%04d at address: 0x%08x ", i, i * page_size);
rc = unlock_block_stm50flw0x0x(flash, i * page_size);
if (!rc) rc = erase_block_stm50flw0x0x(flash, i * page_size);
}
printf("\n");
protect_stm50flw0x0x(bios);
return rc;
}
int write_stm50flw0x0x(struct flashchip *flash, uint8_t * buf)
{
int i,rc=0;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
printf("Programming page: \n");
for (i = 0;(i < total_size / page_size) && (rc==0); i++) {
printf
("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
printf("%04d at address: 0x%08x ", i, i * page_size);
/* Auto Skip Blocks, which already contain the desired data
* Faster, because we only write, what has changed
* More secure, because blocks, which are excluded
* (with the exclude or layout feature)
* are not erased and rewritten; data is retained also
* in sudden power off situations
*/
if (!memcmp((void *)(buf + i * page_size),
(void *)(bios + i * page_size), page_size)) {
printf("SKIPPED\n");
continue;
}
rc = unlock_block_stm50flw0x0x(flash, i * page_size);
if (!rc) rc = erase_block_stm50flw0x0x(flash, i * page_size);
if (!rc) write_page_stm50flw0x0x(bios, buf + i * page_size,
bios + i * page_size, page_size);
}
printf("\n");
protect_stm50flw0x0x(bios);
return rc;
}