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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
*
* 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"
#include "chipdrivers.h"
/* WARNING!
This chip uses the standard JEDEC Addresses in 16-bit mode as word
addresses. In byte mode, 0xAAA has to be used instead of 0x555 and
0x555 instead of 0x2AA. Do *not* blindly replace with standard JEDEC
functions. */
void write_page_m29f400bt(chipaddr bios, uint8_t *src,
chipaddr dst, int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0xA0, bios + 0xAAA);
/* transfer data from source to destination */
chip_writeb(*src, dst);
//chip_writeb(0xF0, bios);
//programmer_delay(5);
toggle_ready_jedec(dst);
msg_cerr("Value in the flash at address 0x%lx = %#x, want %#x\n",
(dst - bios), chip_readb(dst), *src);
dst++;
src++;
}
}
int probe_m29f400bt(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0x90, bios + 0xAAA);
programmer_delay(10);
id1 = chip_readb(bios);
/* The data sheet says id2 is at (bios + 0x01) and id2 listed in
* flash.h does not match. It should be possible to use JEDEC probe.
*/
id2 = chip_readb(bios + 0x02);
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0xF0, bios + 0xAAA);
programmer_delay(10);
msg_cdbg("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
int erase_m29f400bt(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0x80, bios + 0xAAA);
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0x10, bios + 0xAAA);
programmer_delay(10);
toggle_ready_jedec(bios);
if (check_erased_range(flash, 0, flash->total_size * 1024)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
return 0;
}
int block_erase_m29f400bt(struct flashchip *flash, unsigned int start, unsigned int len)
{
chipaddr bios = flash->virtual_memory;
chipaddr dst = bios + start;
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
chip_writeb(0x80, bios + 0xAAA);
chip_writeb(0xAA, bios + 0xAAA);
chip_writeb(0x55, bios + 0x555);
//chip_writeb(0x10, bios + 0xAAA);
chip_writeb(0x30, dst);
programmer_delay(10);
toggle_ready_jedec(bios);
if (check_erased_range(flash, start, len)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
return 0;
}
int block_erase_chip_m29f400bt(struct flashchip *flash, unsigned int address, unsigned int blocklen)
{
if ((address != 0) || (blocklen != flash->total_size * 1024)) {
msg_cerr("%s called with incorrect arguments\n",
__func__);
return -1;
}
return erase_m29f400bt(flash);
}
int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
chipaddr bios = flash->virtual_memory;
//erase_m29f400bt (flash);
msg_cinfo("Programming page:\n ");
/*********************************
*Pages for M29F400BT:
* 16 0x7c000 0x7ffff TOP
* 8 0x7a000 0x7bfff
* 8 0x78000 0x79fff
* 32 0x70000 0x77fff
* 64 0x60000 0x6ffff
* 64 0x50000 0x5ffff
* 64 0x40000 0x4ffff
*---------------------------------
* 64 0x30000 0x3ffff
* 64 0x20000 0x2ffff
* 64 0x10000 0x1ffff
* 64 0x00000 0x0ffff BOTTOM
*********************************/
msg_cinfo("total_size/page_size = %d\n", total_size / page_size);
for (i = 0; i < (total_size / page_size) - 1; i++) {
msg_cinfo("%04d at address: 0x%08x\n", i, i * page_size);
if (block_erase_m29f400bt(flash, i * page_size, page_size)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
write_page_m29f400bt(bios, buf + i * page_size,
bios + i * page_size, page_size);
msg_cinfo("\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");
}
msg_cinfo("%04d at address: 0x%08x\n", 7, 0x70000);
if (block_erase_m29f400bt(flash, 0x70000, 32 * 1024)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000, 32 * 1024);
msg_cinfo("%04d at address: 0x%08x\n", 8, 0x78000);
if (block_erase_m29f400bt(flash, 0x78000, 8 * 1024)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000, 8 * 1024);
msg_cinfo("%04d at address: 0x%08x\n", 9, 0x7a000);
if (block_erase_m29f400bt(flash, 0x7a000, 8 * 1024)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000, 8 * 1024);
msg_cinfo("%04d at address: 0x%08x\n", 10, 0x7c000);
if (block_erase_m29f400bt(flash, 0x7c000, 16 * 1024)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);
msg_cinfo("\n");
return 0;
}
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