mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-27 15:12:36 +02:00
6e0b912f46
Fixes missing unlock for certain chips:
* unlock_49lf00x
* Pm49fl002
* Pm49fl004
* unlock_49flxxxc
* SST49LF160C
* unlock_winbond_fwhub
* W39V080FA
* W39V080FA (dual mode)
Fixes missing printlock for certain chip:
* printlock_w39v040c
* W39V040C
Corresponding to flashrom svn r907.
Signed-off-by: Sean Nelson <audiohacked@gmail.com>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
238 lines
6.4 KiB
C
238 lines
6.4 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 <stdlib.h>
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#include "flash.h"
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#define SECTOR_ERASE 0x30
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#define BLOCK_ERASE 0x20
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#define ERASE 0xD0
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#define AUTO_PGRM 0x10
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#define RESET 0xFF
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#define READ_ID 0x90
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#define READ_STATUS 0x70
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#define CLEAR_STATUS 0x50
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#define STATUS_BPS (1 << 1)
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#define STATUS_ESS (1 << 6)
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#define STATUS_WSMS (1 << 7)
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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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unsigned char status;
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chipaddr bios = flash->virtual_memory;
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chip_writeb(SECTOR_ERASE, bios);
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chip_writeb(ERASE, bios + address);
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do {
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status = chip_readb(bios);
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if (status & (STATUS_ESS | STATUS_BPS)) {
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printf("sector erase FAILED at address=0x%08lx status=0x%01x\n", bios + address, status);
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chip_writeb(CLEAR_STATUS, bios);
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return (-1);
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}
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} while (!(status & STATUS_WSMS));
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chip_writeb(RESET, 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 erase_block_49lfxxxc(struct flashchip *flash, unsigned int address, unsigned int block_size)
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{
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unsigned char status;
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chipaddr bios = flash->virtual_memory;
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chip_writeb(BLOCK_ERASE, bios);
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chip_writeb(ERASE, bios + address);
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do {
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status = chip_readb(bios);
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if (status & (STATUS_ESS | STATUS_BPS)) {
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printf("block erase FAILED at address=0x%08lx status=0x%01x\n", bios + address, status);
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chip_writeb(CLEAR_STATUS, bios);
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return (-1);
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}
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} while (!(status & STATUS_WSMS));
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chip_writeb(RESET, bios);
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if (check_erased_range(flash, address, block_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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static int write_sector_49lfxxxc(chipaddr bios, uint8_t *src, chipaddr dst,
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unsigned int page_size)
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{
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int i;
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unsigned char status;
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chip_writeb(CLEAR_STATUS, bios);
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for (i = 0; i < page_size; i++) {
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/* transfer data from source to destination */
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if (*src == 0xFF) {
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dst++, src++;
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/* If the data is 0xFF, don't program it */
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continue;
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}
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/*issue AUTO PROGRAM command */
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chip_writeb(AUTO_PGRM, bios);
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chip_writeb(*src++, dst++);
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do {
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status = chip_readb(bios);
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if (status & (STATUS_ESS | STATUS_BPS)) {
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printf("sector write FAILED at address=0x%08lx status=0x%01x\n", dst, status);
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chip_writeb(CLEAR_STATUS, bios);
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return (-1);
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}
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} while (!(status & STATUS_WSMS));
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}
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return 0;
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}
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int probe_49lfxxxc(struct flashchip *flash)
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{
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chipaddr bios = flash->virtual_memory;
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uint8_t id1, id2;
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chip_writeb(RESET, bios);
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chip_writeb(READ_ID, bios);
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id1 = chip_readb(bios);
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id2 = chip_readb(bios + 0x01);
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chip_writeb(RESET, bios);
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printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
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if (!(id1 == flash->manufacture_id && id2 == flash->model_id))
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return 0;
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map_flash_registers(flash);
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return 1;
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}
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int erase_49lfxxxc(struct flashchip *flash)
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{
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chipaddr bios = flash->virtual_memory;
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int i;
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unsigned int total_size = flash->total_size * 1024;
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write_lockbits_49lfxxxc(flash, 0);
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for (i = 0; i < total_size; i += flash->page_size)
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if (erase_sector_49lfxxxc(flash, i, flash->page_size))
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return (-1);
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chip_writeb(RESET, bios);
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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_sector_49lfxxxc(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(RESET, bios);
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return 0;
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}
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