mirror of
https://review.coreboot.org/flashrom.git
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8a3c60cdd0
All programmer access function prototypes except init have been made static and moved to the respective file. A few internal functions in flash chip drivers had chipaddr parameters which are no longer needed. The lines touched by flashctx changes have been adjusted to 80 columns except in header files. Corresponding to flashrom svn r1474. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.com>
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* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* This module is designed for supporting the devices
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* ST M50FLW040A (not yet tested)
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* ST M50FLW040B (not yet tested)
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* ST M50FLW080A
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* ST M50FLW080B (not yet tested)
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*/
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#include "flash.h"
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#include "flashchips.h"
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#include "chipdrivers.h"
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/*
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* claus.gindhart@kontron.com
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* The ST M50FLW080B and STM50FLW080B chips have to be unlocked,
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* before you can erase them or write to them.
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*/
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static int unlock_block_stm50flw0x0x(struct flashctx *flash, int offset)
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{
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chipaddr wrprotect = flash->virtual_registers + 2;
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static const uint8_t unlock_sector = 0x00;
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int j;
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/*
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* These chips have to be unlocked before you can erase them or write
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* to them. The size of the locking sectors depends on the type
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* of chip.
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*
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* Sometimes, the BIOS does this for you; so you probably
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* don't need to worry about that.
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*/
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/* Check, if it's is a top/bottom-block with 4k-sectors. */
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/* TODO: What about the other types? */
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if ((offset == 0) ||
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(offset == (flash->model_id == ST_M50FLW080A ? 0xE0000 : 0x10000))
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|| (offset == 0xF0000)) {
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// unlock each 4k-sector
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for (j = 0; j < 0x10000; j += 0x1000) {
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msg_cdbg("unlocking at 0x%x\n", offset + j);
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chip_writeb(flash, unlock_sector,
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wrprotect + offset + j);
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if (chip_readb(flash, wrprotect + offset + j) !=
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unlock_sector) {
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msg_cerr("Cannot unlock sector @ 0x%x\n",
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offset + j);
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return -1;
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}
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}
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} else {
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msg_cdbg("unlocking at 0x%x\n", offset);
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chip_writeb(flash, unlock_sector, wrprotect + offset);
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if (chip_readb(flash, wrprotect + offset) != unlock_sector) {
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msg_cerr("Cannot unlock sector @ 0x%x\n", offset);
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return -1;
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}
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}
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return 0;
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}
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int unlock_stm50flw0x0x(struct flashctx *flash)
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{
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int i;
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for (i = 0; i < flash->total_size * 1024; i+= flash->page_size) {
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if(unlock_block_stm50flw0x0x(flash, i)) {
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msg_cerr("UNLOCK FAILED!\n");
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return -1;
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}
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}
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return 0;
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}
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/* This function is unused. */
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int erase_sector_stm50flw0x0x(struct flashctx *flash, unsigned int sector,
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unsigned int sectorsize)
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{
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chipaddr bios = flash->virtual_memory + sector;
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// clear status register
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chip_writeb(flash, 0x50, bios);
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// now start it
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chip_writeb(flash, 0x32, bios);
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chip_writeb(flash, 0xd0, bios);
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programmer_delay(10);
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wait_82802ab(flash);
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/* FIXME: Check the status register for errors. */
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return 0;
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}
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