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/*
* This file is part of flashrom.
*
* Copyright (C) 2009 Peter Stuge <peter@stuge.se>
*
* 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
*/
#include "flash.h"
int erase_m29f002(struct flashchip *flash) {
volatile uint8_t *bios = flash->virtual_memory;
writeb(0xaa, bios + 0x555);
writeb(0x55, bios + 0xaaa);
writeb(0x80, bios + 0x555);
writeb(0xaa, bios + 0x555);
writeb(0x55, bios + 0xaaa);
writeb(0x10, bios + 0x555);
myusec_delay(10);
toggle_ready_jedec(bios);
return 0;
}
static void rewrite_block(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst, int size) {
/* erase */
writeb(0xaa, bios + 0x555);
writeb(0x55, bios + 0xaaa);
writeb(0x80, bios + 0x555);
writeb(0xaa, bios + 0x555);
writeb(0x55, bios + 0xaaa);
writeb(0x30, dst);
myusec_delay(10);
toggle_ready_jedec(bios);
/* program */
while (size--) {
writeb(0xaa, bios + 0x555);
writeb(0x55, bios + 0xaaa);
writeb(0xa0, bios + 0x555);
writeb(*src, dst);
toggle_ready_jedec(dst);
dst++;
src++;
}
}
static void do_block(volatile uint8_t *bios, uint8_t *src, int i, unsigned long start, int size) {
printf("%d at address: 0x%08lx", i, start);
rewrite_block(bios, src + start, bios + start, size);
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");
}
int write_m29f002t(struct flashchip *flash, uint8_t *buf) {
int i, page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
/* M29F002(N)T has 7 blocks. From bottom to top their sizes are:
* 64k 64k 64k 32k 8k 8k 16k
* flash->page_size is set to 64k in flashchips.c
*/
printf("Programming block: ");
for (i = 0; i < 3; i++)
do_block(bios, buf, i, i*page_size, page_size);
do_block(bios, buf, i++, 0x30000, 32*1024);
do_block(bios, buf, i++, 0x38000, 8*1024);
do_block(bios, buf, i++, 0x3a000, 8*1024);
do_block(bios, buf, i, 0x3c000, 16*1024);
printf("\n");
return 0;
}
int write_m29f002b(struct flashchip *flash, uint8_t *buf) {
int i = 0, page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
/* M29F002B has 7 blocks. From bottom to top their sizes are:
* 16k 8k 8k 32k 64k 64k 64k
* flash->page_size is set to 64k in flashchips.c
*/
printf("Programming block: ");
do_block(bios, buf, i++, 0x00000, 16*1024);
do_block(bios, buf, i++, 0x04000, 8*1024);
do_block(bios, buf, i++, 0x06000, 8*1024);
do_block(bios, buf, i++, 0x08000, 32*1024);
for (; i < 7; i++)
do_block(bios, buf, i, (i-3)*page_size, page_size);
printf("\n");
return 0;
}
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