331 lines
7.8 KiB
C
331 lines
7.8 KiB
C
/*
|
|
* This file is part of the flashrom project.
|
|
*
|
|
* Copyright (C) 2000 Silicon Integrated System Corporation
|
|
* Copyright (C) 2006 Giampiero Giancipoli <gianci@email.it>
|
|
* Copyright (C) 2006 coresystems GmbH <info@coresystems.de>
|
|
* Copyright (C) 2007 Carl-Daniel Hailfinger
|
|
*
|
|
* 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"
|
|
|
|
#define MAX_REFLASH_TRIES 0x10
|
|
|
|
/* Check one byte for odd parity */
|
|
uint8_t oddparity(uint8_t val)
|
|
{
|
|
val = (val ^ (val >> 4)) & 0xf;
|
|
val = (val ^ (val >> 2)) & 0x3;
|
|
return (val ^ (val >> 1)) & 0x1;
|
|
}
|
|
|
|
void toggle_ready_jedec(volatile uint8_t *dst)
|
|
{
|
|
unsigned int i = 0;
|
|
uint8_t tmp1, tmp2;
|
|
|
|
tmp1 = *dst & 0x40;
|
|
|
|
while (i++ < 0xFFFFFFF) {
|
|
tmp2 = *dst & 0x40;
|
|
if (tmp1 == tmp2) {
|
|
break;
|
|
}
|
|
tmp1 = tmp2;
|
|
}
|
|
}
|
|
|
|
void data_polling_jedec(volatile uint8_t *dst, uint8_t data)
|
|
{
|
|
unsigned int i = 0;
|
|
uint8_t tmp;
|
|
|
|
data &= 0x80;
|
|
|
|
while (i++ < 0xFFFFFFF) {
|
|
tmp = *dst & 0x80;
|
|
if (tmp == data) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void unprotect_jedec(volatile uint8_t *bios)
|
|
{
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x80;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x20;
|
|
|
|
usleep(200);
|
|
}
|
|
|
|
void protect_jedec(volatile uint8_t *bios)
|
|
{
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xA0;
|
|
|
|
usleep(200);
|
|
}
|
|
|
|
int probe_jedec(struct flashchip *flash)
|
|
{
|
|
volatile uint8_t *bios = flash->virtual_memory;
|
|
uint8_t id1, id2;
|
|
uint32_t largeid1, largeid2;
|
|
|
|
/* Issue JEDEC Product ID Entry command */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x90;
|
|
/* Older chips may need up to 100 us to respond. The ATMEL 29C020
|
|
* needs 10 ms according to the data sheet.
|
|
*/
|
|
myusec_delay(10000);
|
|
|
|
/* Read product ID */
|
|
id1 = *(volatile uint8_t *)bios;
|
|
id2 = *(volatile uint8_t *)(bios + 0x01);
|
|
largeid1 = id1;
|
|
largeid2 = id2;
|
|
|
|
/* Check if it is a continuation ID, this should be a while loop. */
|
|
if (id1 == 0x7F) {
|
|
largeid1 <<= 8;
|
|
id1 = *(volatile uint8_t *)(bios + 0x100);
|
|
largeid1 |= id1;
|
|
}
|
|
if (id2 == 0x7F) {
|
|
largeid2 <<= 8;
|
|
id2 = *(volatile uint8_t *)(bios + 0x101);
|
|
largeid2 |= id2;
|
|
}
|
|
|
|
/* Issue JEDEC Product ID Exit command */
|
|
*(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%02x, id2 0x%02x", __FUNCTION__, largeid1, largeid2);
|
|
if (!oddparity(id1))
|
|
printf_debug(", id1 parity violation");
|
|
printf_debug("\n");
|
|
if (largeid1 == flash->manufacture_id && largeid2 == flash->model_id)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int erase_sector_jedec(volatile uint8_t *bios, unsigned int page)
|
|
{
|
|
/* Issue the Sector Erase command */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x80;
|
|
myusec_delay(10);
|
|
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + page) = 0x30;
|
|
myusec_delay(10);
|
|
|
|
/* wait for Toggle bit ready */
|
|
toggle_ready_jedec(bios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int erase_block_jedec(volatile uint8_t *bios, unsigned int block)
|
|
{
|
|
/* Issue the Sector Erase command */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x80;
|
|
myusec_delay(10);
|
|
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + block) = 0x50;
|
|
myusec_delay(10);
|
|
|
|
/* wait for Toggle bit ready */
|
|
toggle_ready_jedec(bios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int erase_chip_jedec(struct flashchip *flash)
|
|
{
|
|
volatile uint8_t *bios = flash->virtual_memory;
|
|
|
|
/* Issue the JEDEC Chip Erase command */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x80;
|
|
myusec_delay(10);
|
|
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
myusec_delay(10);
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0x10;
|
|
myusec_delay(10);
|
|
|
|
toggle_ready_jedec(bios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int write_page_write_jedec(volatile uint8_t *bios, uint8_t *src,
|
|
volatile uint8_t *dst, int page_size)
|
|
{
|
|
int i, tried = 0, start_index = 0, ok;
|
|
volatile uint8_t *d = dst;
|
|
uint8_t *s = src;
|
|
|
|
retry:
|
|
/* Issue JEDEC Data Unprotect comand */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xA0;
|
|
|
|
/* transfer data from source to destination */
|
|
for (i = start_index; i < page_size; i++) {
|
|
/* If the data is 0xFF, don't program it */
|
|
if (*src != 0xFF)
|
|
*dst = *src;
|
|
dst++;
|
|
src++;
|
|
}
|
|
|
|
toggle_ready_jedec(dst - 1);
|
|
|
|
dst = d;
|
|
src = s;
|
|
ok = 1;
|
|
for (i = 0; i < page_size; i++) {
|
|
if (*dst != *src) {
|
|
ok = 0;
|
|
break;
|
|
}
|
|
dst++;
|
|
src++;
|
|
}
|
|
|
|
if (!ok && tried++ < MAX_REFLASH_TRIES) {
|
|
start_index = i;
|
|
goto retry;
|
|
}
|
|
if (!ok) {
|
|
fprintf(stderr, " page %d failed!\n",
|
|
(unsigned int)(d - bios) / page_size);
|
|
}
|
|
return !ok;
|
|
}
|
|
|
|
int write_byte_program_jedec(volatile uint8_t *bios, uint8_t *src,
|
|
volatile uint8_t *dst)
|
|
{
|
|
int tried = 0, ok = 1;
|
|
|
|
/* If the data is 0xFF, don't program it */
|
|
if (*src == 0xFF) {
|
|
return -1;
|
|
}
|
|
|
|
retry:
|
|
/* Issue JEDEC Byte Program command */
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
|
|
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
|
|
*(volatile uint8_t *)(bios + 0x5555) = 0xA0;
|
|
|
|
/* transfer data from source to destination */
|
|
*dst = *src;
|
|
toggle_ready_jedec(bios);
|
|
|
|
if (*dst != *src && tried++ < MAX_REFLASH_TRIES) {
|
|
goto retry;
|
|
}
|
|
|
|
if (tried >= MAX_REFLASH_TRIES)
|
|
ok = 0;
|
|
|
|
return !ok;
|
|
}
|
|
|
|
int write_sector_jedec(volatile uint8_t *bios, uint8_t *src,
|
|
volatile uint8_t *dst, unsigned int page_size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < page_size; i++) {
|
|
write_byte_program_jedec(bios, src, dst);
|
|
dst++, src++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int write_jedec(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;
|
|
|
|
erase_chip_jedec(flash);
|
|
// dumb check if erase was successful.
|
|
for (i = 0; i < total_size; i++) {
|
|
if (bios[i] != (uint8_t) 0xff) {
|
|
printf("ERASE FAILED @%d, val %02x!\n", i, bios[i]);
|
|
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_write_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");
|
|
protect_jedec(bios);
|
|
|
|
return 0;
|
|
}
|