mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-27 15:12:36 +02:00
5820f42ef2
Use chipaddr instead of volatile uint8_t * because when we access chips
in external flashers, they are not accessed via pointers at all.
Benefits: This allows us to differentiate between volatile machine
memory accesses and flash chip accesses. It also enforces usage
of chip_{read,write}[bwl] to access flash chips, so nobody will
unintentionally use pointers to access chips anymore. Some unneeded
casts are removed as well. Grepping for chip operations and machine
memory operations doesn't yield any false positives anymore.
Compile tested on 32 bit and 64 bit Linux.
Corresponding to flashrom svn r519.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
218 lines
5.9 KiB
C
218 lines
5.9 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2000 Silicon Integrated System Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "flash.h"
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void protect_m29f400bt(chipaddr bios)
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{
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0xA0, bios + 0xAAA);
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usleep(200);
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}
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void write_page_m29f400bt(chipaddr bios, uint8_t *src,
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chipaddr dst, int page_size)
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{
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int i;
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for (i = 0; i < page_size; i++) {
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0xA0, bios + 0xAAA);
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/* transfer data from source to destination */
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chip_writeb(*src, dst);
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//chip_writeb(0xF0, bios);
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//usleep(5);
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toggle_ready_jedec(dst);
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printf
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("Value in the flash at address 0x%lx = %#x, want %#x\n",
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(dst - bios), chip_readb(dst), *src);
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dst++;
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src++;
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}
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}
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int probe_m29f400bt(struct flashchip *flash)
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{
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chipaddr bios = flash->virtual_memory;
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uint8_t id1, id2;
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0x90, bios + 0xAAA);
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myusec_delay(10);
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id1 = chip_readb(bios);
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/* The data sheet says id2 is at (bios + 0x01) and id2 listed in
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* flash.h does not match. It should be possible to use JEDEC probe.
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*/
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id2 = chip_readb(bios + 0x02);
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0xF0, bios + 0xAAA);
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myusec_delay(10);
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printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id)
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return 1;
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return 0;
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}
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int erase_m29f400bt(struct flashchip *flash)
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{
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chipaddr bios = flash->virtual_memory;
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0x80, bios + 0xAAA);
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0x10, bios + 0xAAA);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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return 0;
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}
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int block_erase_m29f400bt(chipaddr bios, chipaddr dst)
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{
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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chip_writeb(0x80, bios + 0xAAA);
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chip_writeb(0xAA, bios + 0xAAA);
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chip_writeb(0x55, bios + 0x555);
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//chip_writeb(0x10, bios + 0xAAA);
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chip_writeb(0x30, dst);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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return 0;
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}
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int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
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{
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int i;
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int total_size = flash->total_size * 1024;
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int page_size = flash->page_size;
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chipaddr bios = flash->virtual_memory;
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//erase_m29f400bt (flash);
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printf("Programming page:\n ");
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/*********************************
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*Pages for M29F400BT:
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* 16 0x7c000 0x7ffff TOP
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* 8 0x7a000 0x7bfff
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* 8 0x78000 0x79fff
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* 32 0x70000 0x77fff
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* 64 0x60000 0x6ffff
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* 64 0x50000 0x5ffff
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* 64 0x40000 0x4ffff
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*---------------------------------
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* 64 0x30000 0x3ffff
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* 64 0x20000 0x2ffff
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* 64 0x10000 0x1ffff
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* 64 0x00000 0x0ffff BOTTOM
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*********************************/
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printf("total_size/page_size = %d\n", total_size / page_size);
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for (i = 0; i < (total_size / page_size) - 1; i++) {
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printf("%04d at address: 0x%08x\n", i, i * page_size);
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block_erase_m29f400bt(bios, bios + i * page_size);
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write_page_m29f400bt(bios, buf + i * page_size,
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bios + i * page_size, page_size);
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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");
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}
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printf("%04d at address: 0x%08x\n", 7, 0x70000);
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block_erase_m29f400bt(bios, bios + 0x70000);
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write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000, 32 * 1024);
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printf("%04d at address: 0x%08x\n", 8, 0x78000);
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block_erase_m29f400bt(bios, bios + 0x78000);
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write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000, 8 * 1024);
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printf("%04d at address: 0x%08x\n", 9, 0x7a000);
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block_erase_m29f400bt(bios, bios + 0x7a000);
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write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000, 8 * 1024);
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printf("%04d at address: 0x%08x\n", 10, 0x7c000);
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block_erase_m29f400bt(bios, bios + 0x7c000);
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write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);
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printf("\n");
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//protect_m29f400bt (bios);
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return 0;
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}
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int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf)
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{
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chipaddr bios = flash->virtual_memory;
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printf("Programming page:\n ");
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/*********************************
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*Pages for M29F400BT:
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* 16 0x7c000 0x7ffff TOP
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* 8 0x7a000 0x7bfff
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* 8 0x78000 0x79fff
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* 32 0x70000 0x77fff
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* 64 0x60000 0x6ffff
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* 64 0x50000 0x5ffff
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* 64 0x40000 0x4ffff
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*---------------------------------
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* 64 0x30000 0x3ffff
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* 64 0x20000 0x2ffff
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* 64 0x10000 0x1ffff
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* 64 0x00000 0x0ffff BOTTOM
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*********************************/
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printf("%04d at address: 0x%08x\n", 7, 0x00000);
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block_erase_m29f400bt(bios, bios + 0x00000);
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write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000, 64 * 1024);
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printf("%04d at address: 0x%08x\n", 7, 0x10000);
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block_erase_m29f400bt(bios, bios + 0x10000);
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write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000, 64 * 1024);
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printf("%04d at address: 0x%08x\n", 7, 0x20000);
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block_erase_m29f400bt(bios, bios + 0x20000);
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write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000, 64 * 1024);
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printf("%04d at address: 0x%08x\n", 7, 0x30000);
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block_erase_m29f400bt(bios, bios + 0x30000);
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write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000, 64 * 1024);
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printf("\n");
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//protect_m29f400bt (bios);
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return 0;
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}
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