diff options
author | Patrick Georgi <patrick.georgi@coresystems.de> | 2009-06-28 22:47:06 +0000 |
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committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2009-06-28 22:47:06 +0000 |
commit | b1ff95c14d62ffad2bb417aa3372fe767342de7f (patch) | |
tree | 1aa47fdd993e9d58421e7bd046d49648b91e4cbc /util/flashrom/jedec.c | |
parent | 1220c50919757a0a9b0ba31eba348b9e80dd7e2d (diff) |
This copy of flashrom is old and unmaintained. Delete it to avoid
confusion, after we had a grace period to get people to move over to the
new repository.
History stays available for the archaeologists and for ancient
checkouts (potentially with local changes). Use "svn diff" to get local
changes, and apply it to a newer tree (if you manage to apply it, that
is).
The new repository is available at:
svn://coreboot.org/flashrom/trunk
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4379 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flashrom/jedec.c')
-rw-r--r-- | util/flashrom/jedec.c | 330 |
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; -} |