flashrom: Winbond W39V040C and MSI K8T Neo2-F
W39V040C does standard JEDEC commands except chip erase so add a small driver. probe_w39v040c() prints the block lock pin status when a chip is found. The Neo2 board enable matches on 8237-internal IDE and onboard NIC PCI IDs. Many thanks to Daniel McLellan for testing all of this on hardware! Build tested by Uwe. Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3431 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
98
util/flashrom/w39v040c.c
Normal file
98
util/flashrom/w39v040c.c
Normal file
@@ -0,0 +1,98 @@
|
||||
/*
|
||||
* This file is part of the flashrom project.
|
||||
*
|
||||
* Copyright (C) 2008 Peter Stuge <peter@stuge.se>
|
||||
*
|
||||
* 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 "flash.h"
|
||||
|
||||
int probe_w39v040c(struct flashchip *flash)
|
||||
{
|
||||
volatile uint8_t *bios = flash->virtual_memory;
|
||||
uint8_t id1, id2, lock;
|
||||
|
||||
*(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);
|
||||
|
||||
id1 = *(volatile uint8_t *)bios;
|
||||
id2 = *(volatile uint8_t *)(bios + 1);
|
||||
lock = *(volatile uint8_t *)(bios + 0xfff2);
|
||||
|
||||
*(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%x, id2 0x%x", __func__, id1, id2);
|
||||
if (!oddparity(id1))
|
||||
printf_debug(", id1 parity violation");
|
||||
printf_debug("\n");
|
||||
if (flash->manufacture_id == id1 && flash->model_id == id2) {
|
||||
printf("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
|
||||
__func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int erase_w39v040c(struct flashchip *flash)
|
||||
{
|
||||
int i;
|
||||
unsigned int total_size = flash->total_size * 1024;
|
||||
volatile uint8_t *bios = flash->virtual_memory;
|
||||
|
||||
for (i = 0; i < total_size; i += flash->page_size)
|
||||
erase_sector_jedec(flash->virtual_memory, i);
|
||||
|
||||
for (i = 0; i < total_size; i++)
|
||||
if (0xff != bios[i]) {
|
||||
printf("ERASE FAILED at 0x%08x! Expected=0xff, Read=0x%02x\n", i, bios[i]);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int write_w39v040c(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;
|
||||
|
||||
if (flash->erase(flash))
|
||||
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_sector_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");
|
||||
|
||||
return 0;
|
||||
}
|
Reference in New Issue
Block a user