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https://review.coreboot.org/flashrom.git
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c2333751c4
Corresponding to flashrom svn r1698. Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2000 Silicon Integrated System Corporation
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* Copyright (C) 2005-2007 coresystems GmbH
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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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#include "flash.h"
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#include "chipdrivers.h"
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static int write_lockbits_block_49lfxxxc(struct flashctx *flash,
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unsigned long address,
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unsigned char bits)
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{
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unsigned long lock = flash->virtual_registers + address + 2;
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msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock,
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chip_readb(flash, lock));
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chip_writeb(flash, bits, lock);
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return 0;
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}
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static int write_lockbits_49lfxxxc(struct flashctx *flash, unsigned char bits)
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{
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chipaddr registers = flash->virtual_registers;
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unsigned int i, left = flash->chip->total_size * 1024;
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unsigned long address;
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msg_cdbg("\nbios=0x%08" PRIxPTR "\n", registers);
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for (i = 0; left > 65536; i++, left -= 65536) {
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write_lockbits_block_49lfxxxc(flash, i * 65536, bits);
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}
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address = i * 65536;
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write_lockbits_block_49lfxxxc(flash, address, bits);
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address += 32768;
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write_lockbits_block_49lfxxxc(flash, address, bits);
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address += 8192;
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write_lockbits_block_49lfxxxc(flash, address, bits);
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address += 8192;
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write_lockbits_block_49lfxxxc(flash, address, bits);
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return 0;
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}
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int unlock_49lfxxxc(struct flashctx *flash)
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{
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return write_lockbits_49lfxxxc(flash, 0);
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}
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int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address,
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unsigned int sector_size)
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{
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uint8_t status;
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chipaddr bios = flash->virtual_memory;
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chip_writeb(flash, 0x30, bios);
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chip_writeb(flash, 0xD0, bios + address);
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status = wait_82802ab(flash);
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print_status_82802ab(status);
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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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