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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 <stdio.h>
#include <stdint.h>
#include "flash.h"
int probe_29f002(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0x5555);
chip_writeb(0x55, bios + 0x2AAA);
chip_writeb(0x90, bios + 0x5555);
id1 = chip_readb(bios);
id2 = chip_readb(bios + 0x01);
chip_writeb(0xF0, bios);
myusec_delay(10);
printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
int erase_29f002(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
chip_writeb(0xF0, bios + 0x555);
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0x2AA);
chip_writeb(0x80, bios + 0x555);
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0x2AA);
chip_writeb(0x10, bios + 0x555);
myusec_delay(100);
toggle_ready_jedec(bios);
// while ((*bios & 0x40) != 0x40)
//;
#if 0
toggle_ready_jedec(bios);
chip_writeb(0x30, bios + 0x0ffff);
chip_writeb(0x30, bios + 0x1ffff);
chip_writeb(0x30, bios + 0x2ffff);
chip_writeb(0x30, bios + 0x37fff);
chip_writeb(0x30, bios + 0x39fff);
chip_writeb(0x30, bios + 0x3bfff);
#endif
return 0;
}
int write_29f002(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
volatile uint8_t *bios = flash->virtual_memory;
volatile uint8_t *dst = bios;
chip_writeb(0xF0, bios);
myusec_delay(10);
erase_29f002(flash);
//*bios = 0xF0;
#if 1
printf("Programming page: ");
for (i = 0; i < total_size; i++) {
/* write to the sector */
if ((i & 0xfff) == 0)
printf("address: 0x%08lx", (unsigned long)i);
chip_writeb(0xAA, bios + 0x5555);
chip_writeb(0x55, bios + 0x2AAA);
chip_writeb(0xA0, bios + 0x5555);
chip_writeb(*buf++, dst++);
/* wait for Toggle bit ready */
toggle_ready_jedec(dst);
if ((i & 0xfff) == 0)
printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
#endif
printf("\n");
return 0;
}
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