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69e5811e79
Sst49lfxxxc software status register is functionally the same as the 82802ab status register, "Block Protect Status"(49lfxxxc) can be treated the same as "Device Protect Status"(82802ab). Erase_block_49lfxxxc is the same command sequence as erase_block_82802ab. Add unlock_49lfxxxc to chips definitions. Write_sector_49lfxxxc is the same as write_page_82802ab. Corresponding to flashrom svn r972. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
123 lines
3.7 KiB
C
123 lines
3.7 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 <stdlib.h>
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#include "flash.h"
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#include "chipdrivers.h"
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int unlock_block_49lfxxxc(struct flashchip *flash, unsigned long address, unsigned char bits)
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{
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unsigned long lock = flash->virtual_registers + address + 2;
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n", lock, chip_readb(lock));
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chip_writeb(bits, lock);
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return 0;
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}
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static int write_lockbits_49lfxxxc(struct flashchip *flash, unsigned char bits)
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{
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chipaddr registers = flash->virtual_registers;
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int i, left = flash->total_size * 1024;
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unsigned long address;
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printf_debug("\nbios=0x%08lx\n", registers);
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for (i = 0; left > 65536; i++, left -= 65536) {
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n",
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registers + (i * 65536) + 2,
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chip_readb(registers + (i * 65536) + 2));
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chip_writeb(bits, registers + (i * 65536) + 2);
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}
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address = i * 65536;
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n",
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registers + address + 2,
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chip_readb(registers + address + 2));
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chip_writeb(bits, registers + address + 2);
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address += 32768;
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n",
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registers + address + 2,
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chip_readb(registers + address + 2));
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chip_writeb(bits, registers + address + 2);
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address += 8192;
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n",
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registers + address + 2,
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chip_readb(registers + address + 2));
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chip_writeb(bits, registers + address + 2);
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address += 8192;
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printf_debug("lockbits at address=0x%08lx is 0x%01x\n",
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registers + address + 2,
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chip_readb(registers + address + 2));
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chip_writeb(bits, registers + address + 2);
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return 0;
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}
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int unlock_49lfxxxc(struct flashchip *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 flashchip *flash, unsigned int address, 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(0x30, bios);
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chip_writeb(0xD0, bios + address);
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status = wait_82802ab(bios);
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if (check_erased_range(flash, address, sector_size)) {
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fprintf(stderr, "ERASE FAILED!\n");
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return -1;
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}
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return 0;
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}
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int write_49lfxxxc(struct flashchip *flash, uint8_t *buf)
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{
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int i;
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int total_size = flash->total_size * 1024;
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int page_size = flash->page_size;
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chipaddr bios = flash->virtual_memory;
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write_lockbits_49lfxxxc(flash, 0);
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printf("Programming page: ");
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for (i = 0; i < total_size / page_size; i++) {
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/* erase the page before programming */
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if (erase_sector_49lfxxxc(flash, i * page_size, flash->page_size)) {
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fprintf(stderr, "ERASE FAILED!\n");
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return -1;
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}
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/* write to the sector */
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printf("%04d at address: 0x%08x", i, i * page_size);
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write_page_82802ab(bios, buf + i * page_size,
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bios + i * page_size, page_size);
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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");
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}
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printf("\n");
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chip_writeb(0xFF, bios);
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return 0;
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}
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