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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2005-2007 coresystems GmbH
* 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
*/
#include "flash.h"
#include "chipdrivers.h"
static int write_lockbits_block_49lfxxxc(struct flashchip *flash, unsigned long address, unsigned char bits)
{
unsigned long lock = flash->virtual_registers + address + 2;
msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock, chip_readb(lock));
chip_writeb(bits, lock);
return 0;
}
static int write_lockbits_49lfxxxc(struct flashchip *flash, unsigned char bits)
{
chipaddr registers = flash->virtual_registers;
int i, left = flash->total_size * 1024;
unsigned long address;
msg_cdbg("\nbios=0x%08lx\n", registers);
for (i = 0; left > 65536; i++, left -= 65536) {
write_lockbits_block_49lfxxxc(flash, i * 65536, bits);
}
address = i * 65536;
write_lockbits_block_49lfxxxc(flash, address, bits);
address += 32768;
write_lockbits_block_49lfxxxc(flash, address, bits);
address += 8192;
write_lockbits_block_49lfxxxc(flash, address, bits);
address += 8192;
write_lockbits_block_49lfxxxc(flash, address, bits);
return 0;
}
int unlock_49lfxxxc(struct flashchip *flash)
{
return write_lockbits_49lfxxxc(flash, 0);
}
int erase_sector_49lfxxxc(struct flashchip *flash, unsigned int address, unsigned int sector_size)
{
uint8_t status;
chipaddr bios = flash->virtual_memory;
chip_writeb(0x30, bios);
chip_writeb(0xD0, bios + address);
status = wait_82802ab(flash);
if (check_erased_range(flash, address, sector_size)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
return 0;
}
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