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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2008 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 <stdio.h>
#include "flash.h"
int probe_w39v040c(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
uint8_t id1, id2, lock;
*(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(10);
id1 = *(volatile uint8_t *)bios;
id2 = *(volatile uint8_t *)(bios + 1);
lock = *(volatile uint8_t *)(bios + 0xfff2);
*(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", __func__, id1, id2);
if (!oddparity(id1))
printf_debug(", id1 parity violation");
printf_debug("\n");
if (flash->manufacture_id == id1 && flash->model_id == id2) {
printf("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
__func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
return 1;
}
return 0;
}
int erase_w39v040c(struct flashchip *flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
volatile uint8_t *bios = flash->virtual_memory;
for (i = 0; i < total_size; i += flash->page_size)
erase_sector_jedec(flash->virtual_memory, i);
for (i = 0; i < total_size; i++)
if (0xff != bios[i]) {
printf("ERASE FAILED at 0x%08x! Expected=0xff, Read=0x%02x\n", i, bios[i]);
return -1;
}
return 0;
}
int write_w39v040c(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
if (flash->erase(flash))
return -1;
printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
printf("%04d at address: 0x%08x", i, i * page_size);
write_sector_jedec(bios, buf + i * page_size,
bios + i * page_size, page_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\b\b\b");
}
printf("\n");
return 0;
}
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