3ab63e1401
Fixed write_page_write_jedec() in jedec.c. Added a check-reprogram loop in the same function, to come around the high page write failure rate on some boards. This patch includes the changes suggested by Ron to simplify the control flow. It also includes trivial changes by me to make flashrom build on newer systems (libpci needs libz now). I also made a small type case compile fix and proper return code handling in one or two places. Signed-off-by: Giampiero Giancipoli <gianci@email.it> Signed-off-by: Ronald G Minnich <rminnich@gmail.com> Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2505 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
255 lines
6.2 KiB
C
255 lines
6.2 KiB
C
/*
|
|
* jedec.c: driver for programming JEDEC standard flash parts
|
|
*
|
|
*
|
|
* Copyright 2000 Silicon Integrated System Corporation
|
|
* Copyright 2006 Giampiero Giancipoli <gianci@email.it>
|
|
* Copyright 2006 coresystems GmbH <info@coresystems.de>
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*
|
|
* Reference:
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include "flash.h"
|
|
#include "jedec.h"
|
|
#include "debug.h"
|
|
|
|
#define MAX_REFLASH_TRIES 0x10
|
|
|
|
int probe_jedec(struct flashchip *flash)
|
|
{
|
|
volatile uint8_t *bios = flash->virt_addr;
|
|
uint8_t id1, id2;
|
|
|
|
/* 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;
|
|
myusec_delay(10);
|
|
|
|
/* Read product ID */
|
|
id1 = *(volatile uint8_t *) bios;
|
|
id2 = *(volatile uint8_t *) (bios + 0x01);
|
|
|
|
/* 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(10);
|
|
|
|
printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
|
|
if (id1 == flash->manufacture_id && id2 == 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->virt_addr;
|
|
|
|
/* 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->virt_addr;
|
|
|
|
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\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_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);
|
|
}
|