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Diffstat (limited to 'util/flashrom/stm50flw0x0x.c')
-rw-r--r--util/flashrom/stm50flw0x0x.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/util/flashrom/stm50flw0x0x.c b/util/flashrom/stm50flw0x0x.c
deleted file mode 100644
index a40da76885..0000000000
--- a/util/flashrom/stm50flw0x0x.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * 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)
-{
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
-
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x90, bios + 0x5555);
- myusec_delay(40);
-
- /* Read product ID */
- id1 = chip_readb(bios);
- id2 = chip_readb(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 = chip_readb(bios + 0x100);
- largeid1 |= id1;
- }
- if (id2 == 0x7F) {
- largeid2 <<= 8;
- id2 = chip_readb(bios + 0x101);
- largeid2 |= id2;
- }
-
- /* Issue JEDEC Product ID Exit command */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0xF0, bios + 0x5555);
- myusec_delay(40);
-
- printf_debug("%s: id1 0x%02x, id2 0x%02x\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;
-
- chip_writeb(0x70, bios);
- if ((chip_readb(bios) & 0x80) == 0) { // it's busy
- while ((chip_readb(bios) & 0x80) == 0) ;
- }
- // put another command to get out of status register mode
-
- chip_writeb(0x90, bios);
- myusec_delay(10);
-
- id1 = chip_readb(bios);
-
- // this is needed to jam it out of "read id" mode
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xF0, bios + 0x5555);
-}
-
-/*
- * 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
- * don't 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);
- chip_writeb(unlock_sector, flash_addr + offset + j);
- if (chip_readb(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);
- chip_writeb(unlock_sector, flash_addr + offset);
- if (chip_readb(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
- chip_writeb(0x50, bios);
- printf_debug("Erase at %p\n", bios);
- // now start it
- chip_writeb(0x20, bios);
- chip_writeb(0xd0, bios);
- myusec_delay(10);
-
- wait_stm50flw0x0x(flash->virtual_memory);
-
- for (j = 0; j < flash->page_size; j++) {
- if (chip_readb(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++) {
- chip_writeb(0x40, dst);
- chip_writeb(*src++, dst++);
- 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 (chip_readb(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;
-}
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