Author: stepan Date: 2008-04-28 19:51:09 +0200 (Mon, 28 Apr 2008) New Revision: 3274
Added: trunk/util/flashrom/stm50flw0x0x.c Modified: trunk/util/flashrom/Makefile trunk/util/flashrom/flash.h trunk/util/flashrom/flashchips.c Log: 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
Modified: trunk/util/flashrom/Makefile =================================================================== --- trunk/util/flashrom/Makefile 2008-04-28 14:47:30 UTC (rev 3273) +++ trunk/util/flashrom/Makefile 2008-04-28 17:51:09 UTC (rev 3274) @@ -16,15 +16,15 @@ ifeq ($(OS_ARCH), SunOS) LDFLAGS = -lpci -lz else -LDFLAGS = -lpci -lz -static +LDFLAGS = -lpci -lz STRIP_ARGS = -s endif
-OBJS = chipset_enable.o board_enable.o udelay.o jedec.o sst28sf040.o \ - am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o w49f002u.o \ - 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o sst49lfxxxc.o \ - sst_fwhub.o layout.o cbtable.o flashchips.o flashrom.o \ - w39v080fa.o sharplhf00l04.o w29ee011.o spi.o +OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.c \ + sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \ + w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o \ + sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \ + flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o
all: pciutils dep $(PROGRAM)
Modified: trunk/util/flashrom/flash.h =================================================================== --- trunk/util/flashrom/flash.h 2008-04-28 14:47:30 UTC (rev 3273) +++ trunk/util/flashrom/flash.h 2008-04-28 17:51:09 UTC (rev 3274) @@ -427,4 +427,8 @@ /* w49f002u.c */ 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__ */
Modified: trunk/util/flashrom/flashchips.c =================================================================== --- trunk/util/flashrom/flashchips.c 2008-04-28 14:47:30 UTC (rev 3273) +++ trunk/util/flashrom/flashchips.c 2008-04-28 17:51:09 UTC (rev 3274) @@ -102,10 +102,10 @@ {"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", "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", "M50FLW040B", ST_ID, ST_M50FLW040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, - {"ST", "M50FLW080A", ST_ID, ST_M50FLW080A, 1024, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec}, - {"ST", "M50FLW080B", ST_ID, ST_M50FLW080B, 1024, 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_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x}, + {"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_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x}, {"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", "M50FW080", ST_ID, ST_M50FW080, 1024, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
Added: trunk/util/flashrom/stm50flw0x0x.c =================================================================== --- trunk/util/flashrom/stm50flw0x0x.c (rev 0) +++ trunk/util/flashrom/stm50flw0x0x.c 2008-04-28 17:51:09 UTC (rev 3274) @@ -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; +}