summaryrefslogtreecommitdiff
path: root/util/flashrom/jedec.c
diff options
context:
space:
mode:
Diffstat (limited to 'util/flashrom/jedec.c')
-rw-r--r--util/flashrom/jedec.c330
1 files changed, 0 insertions, 330 deletions
diff --git a/util/flashrom/jedec.c b/util/flashrom/jedec.c
deleted file mode 100644
index ac6095ba56..0000000000
--- a/util/flashrom/jedec.c
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * 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 = chip_readb(dst) & 0x40;
-
- while (i++ < 0xFFFFFFF) {
- tmp2 = chip_readb(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 = chip_readb(dst) & 0x80;
- if (tmp == data) {
- break;
- }
- }
-}
-
-void unprotect_jedec(volatile uint8_t *bios)
-{
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0x80, bios + 0x5555);
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0x20, bios + 0x5555);
-
- usleep(200);
-}
-
-void protect_jedec(volatile uint8_t *bios)
-{
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
-
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x90, bios + 0x5555);
- /* 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 = chip_readb(bios);
- id2 = chip_readb(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 = chip_readb(bios + 0x100);
- largeid1 |= id1;
- }
- if (id2 == 0x7F) {
- largeid2 <<= 8;
- id2 = chip_readb(bios + 0x101);
- largeid2 |= id2;
- }
-
- /* Issue JEDEC Product ID Exit command */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0xF0, bios + 0x5555);
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x80, bios + 0x5555);
- myusec_delay(10);
-
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x30, bios + page);
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x80, bios + 0x5555);
- myusec_delay(10);
-
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x50, bios + block);
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x80, bios + 0x5555);
- myusec_delay(10);
-
- chip_writeb(0xAA, bios + 0x5555);
- myusec_delay(10);
- chip_writeb(0x55, bios + 0x2AAA);
- myusec_delay(10);
- chip_writeb(0x10, bios + 0x5555);
- 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 */
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
-
- /* 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)
- chip_writeb(*src, dst);
- dst++;
- src++;
- }
-
- toggle_ready_jedec(dst - 1);
-
- dst = d;
- src = s;
- ok = 1;
- for (i = 0; i < page_size; i++) {
- if (chip_readb(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 */
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
-
- /* transfer data from source to destination */
- chip_writeb(*src, dst);
- toggle_ready_jedec(bios);
-
- if (chip_readb(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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 07:31:35 +0000