mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-26 14:42:36 +02:00
5a7cb847f0
All the driver conversion work and cleanup has been done by Stefan. flashrom.c and cli_classic.c are a joint work of Stefan and Carl-Daniel. Corresponding to flashrom svn r1579. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at> Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
|
|
* This file is part of the flashrom project.
|
|
*
|
|
* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.com>
|
|
* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* This module is designed for supporting the devices
|
|
* ST M50FLW040A (not yet tested)
|
|
* ST M50FLW040B (not yet tested)
|
|
* ST M50FLW080A
|
|
* ST M50FLW080B (not yet tested)
|
|
*/
|
|
|
|
#include "flash.h"
|
|
#include "flashchips.h"
|
|
#include "chipdrivers.h"
|
|
|
|
/*
|
|
* claus.gindhart@kontron.com
|
|
* The ST M50FLW080B and STM50FLW080B chips have to be unlocked,
|
|
* before you can erase them or write to them.
|
|
*/
|
|
static int unlock_block_stm50flw0x0x(struct flashctx *flash, int offset)
|
|
{
|
|
chipaddr wrprotect = flash->virtual_registers + 2;
|
|
static const uint8_t unlock_sector = 0x00;
|
|
int j;
|
|
|
|
/*
|
|
* These chips have to be unlocked before you can erase them or write
|
|
* to them. The size of the locking sectors depends on the type
|
|
* of chip.
|
|
*
|
|
* Sometimes, the BIOS does this for you; so you probably
|
|
* don't need to worry about that.
|
|
*/
|
|
|
|
/* Check, if it's is a top/bottom-block with 4k-sectors. */
|
|
/* TODO: What about the other types? */
|
|
if ((offset == 0) ||
|
|
(offset == (flash->chip->model_id == ST_M50FLW080A ? 0xE0000 : 0x10000))
|
|
|| (offset == 0xF0000)) {
|
|
|
|
// unlock each 4k-sector
|
|
for (j = 0; j < 0x10000; j += 0x1000) {
|
|
msg_cdbg("unlocking at 0x%x\n", offset + j);
|
|
chip_writeb(flash, unlock_sector,
|
|
wrprotect + offset + j);
|
|
if (chip_readb(flash, wrprotect + offset + j) !=
|
|
unlock_sector) {
|
|
msg_cerr("Cannot unlock sector @ 0x%x\n",
|
|
offset + j);
|
|
return -1;
|
|
}
|
|
}
|
|
} else {
|
|
msg_cdbg("unlocking at 0x%x\n", offset);
|
|
chip_writeb(flash, unlock_sector, wrprotect + offset);
|
|
if (chip_readb(flash, wrprotect + offset) != unlock_sector) {
|
|
msg_cerr("Cannot unlock sector @ 0x%x\n", offset);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int unlock_stm50flw0x0x(struct flashctx *flash)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < flash->chip->total_size * 1024; i+= flash->chip->page_size) {
|
|
if(unlock_block_stm50flw0x0x(flash, i)) {
|
|
msg_cerr("UNLOCK FAILED!\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function is unused. */
|
|
int erase_sector_stm50flw0x0x(struct flashctx *flash, unsigned int sector,
|
|
unsigned int sectorsize)
|
|
{
|
|
chipaddr bios = flash->virtual_memory + sector;
|
|
|
|
// clear status register
|
|
chip_writeb(flash, 0x50, bios);
|
|
// now start it
|
|
chip_writeb(flash, 0x32, bios);
|
|
chip_writeb(flash, 0xd0, bios);
|
|
programmer_delay(10);
|
|
|
|
wait_82802ab(flash);
|
|
|
|
/* FIXME: Check the status register for errors. */
|
|
return 0;
|
|
}
|