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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 <stdlib.h>
#include "flash.h"
// I need that Berkeley bit-map printer
void print_lhf00l04_status(uint8_t status)
{
printf("%s", status & 0x80 ? "Ready:" : "Busy:");
printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
}
int probe_lhf00l04(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
#if 0
/* Enter ID mode */
chip_writeb(0xAA, bios + 0x5555);
chip_writeb(0x55, bios + 0x2AAA);
chip_writeb(0x90, bios + 0x5555);
#endif
chip_writeb(0xff, bios);
programmer_delay(10);
chip_writeb(0x90, bios);
programmer_delay(10);
id1 = chip_readb(bios);
id2 = chip_readb(bios + 0x01);
/* Leave ID mode */
chip_writeb(0xAA, bios + 0x5555);
chip_writeb(0x55, bios + 0x2AAA);
chip_writeb(0xF0, bios + 0x5555);
programmer_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 0;
map_flash_registers(flash);
return 1;
}
uint8_t wait_lhf00l04(chipaddr bios)
{
uint8_t status;
uint8_t id1, id2;
chip_writeb(0x70, bios);
if ((chip_readb(bios) & 0x80) == 0) { // it's busy
while ((chip_readb(bios) & 0x80) == 0) ;
}
status = chip_readb(bios);
// put another command to get out of status register mode
chip_writeb(0x90, bios);
programmer_delay(10);
id1 = chip_readb(bios);
id2 = chip_readb(bios + 0x01);
// this is needed to jam it out of "read id" mode
chip_writeb(0xAA, bios + 0x5555);
chip_writeb(0x55, bios + 0x2AAA);
chip_writeb(0xF0, bios + 0x5555);
return status;
}
int erase_lhf00l04_block(struct flashchip *flash, int offset)
{
chipaddr bios = flash->virtual_memory + offset;
chipaddr wrprotect = flash->virtual_registers + offset + 2;
uint8_t status;
// clear status register
chip_writeb(0x50, bios);
printf("Erase at 0x%lx\n", bios);
status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
// clear write protect
printf("write protect is at 0x%lx\n", (wrprotect));
printf("write protect is 0x%x\n", chip_readb(wrprotect));
chip_writeb(0, wrprotect);
printf("write protect is 0x%x\n", chip_readb(wrprotect));
// now start it
chip_writeb(0x20, bios);
chip_writeb(0xd0, bios);
programmer_delay(10);
// now let's see what the register is
status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
printf("DONE BLOCK 0x%x\n", offset);
return 0;
}
int erase_lhf00l04(struct flashchip *flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
printf("total_size is %d; flash->page_size is %d\n",
total_size, flash->page_size);
for (i = 0; i < total_size; i += flash->page_size)
erase_lhf00l04_block(flash, i);
printf("DONE ERASE\n");
return 0;
}
void write_page_lhf00l04(chipaddr bios, uint8_t *src,
chipaddr dst, int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
/* transfer data from source to destination */
chip_writeb(0x40, dst);
chip_writeb(*src++, dst++);
wait_lhf00l04(bios);
}
}
int write_lhf00l04(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_lhf00l04(flash);
if (chip_readb(bios) != 0xff) {
printf("ERASE FAILED!\n");
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_page_lhf00l04(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");
protect_jedec(bios);
return 0;
}
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