mirror of
https://review.coreboot.org/flashrom.git
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5820f42ef2
Use chipaddr instead of volatile uint8_t * because when we access chips
in external flashers, they are not accessed via pointers at all.
Benefits: This allows us to differentiate between volatile machine
memory accesses and flash chip accesses. It also enforces usage
of chip_{read,write}[bwl] to access flash chips, so nobody will
unintentionally use pointers to access chips anymore. Some unneeded
casts are removed as well. Grepping for chip operations and machine
memory operations doesn't yield any false positives anymore.
Compile tested on 32 bit and 64 bit Linux.
Corresponding to flashrom svn r519.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
121 lines
3.2 KiB
C
121 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) 2004 Tyan Corporation
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* Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com>
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* Copyright (C) 2007 Reinder E.N. de Haan <lb_reha@mveas.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 <stdio.h>
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#include "flash.h"
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extern int exclude_start_page, exclude_end_page;
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void write_lockbits_49fl00x(chipaddr bios, int size,
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unsigned char bits, int block_size)
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{
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int i, left = size;
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for (i = 0; left >= block_size; i++, left -= block_size) {
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/* pm49fl002 */
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if (block_size == 16384 && i % 2)
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continue;
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chip_writeb(bits, bios + (i * block_size) + 2);
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}
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}
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int probe_49fl00x(struct flashchip *flash)
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{
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int ret = probe_jedec(flash);
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if (ret == 1)
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map_flash_registers(flash);
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return ret;
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}
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int erase_49fl00x(struct flashchip *flash)
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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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/* unprotected */
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write_lockbits_49fl00x(flash->virtual_registers,
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total_size, 0, page_size);
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/*
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* erase_chip_jedec() will not work... Datasheet says
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* "Chip erase is available in A/A Mux Mode only".
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*/
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printf("Erasing page: ");
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for (i = 0; i < total_size / page_size; i++) {
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if ((i >= exclude_start_page) && (i < exclude_end_page))
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continue;
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/* erase the page */
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erase_block_jedec(bios, i * page_size);
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printf("%04d at address: 0x%08x", i, i * 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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fflush(stdout);
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}
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printf("\n");
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/* protected */
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write_lockbits_49fl00x(flash->virtual_registers,
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total_size, 1, page_size);
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return 0;
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}
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int write_49fl00x(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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/* unprotected */
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write_lockbits_49fl00x(flash->virtual_registers, total_size, 0,
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page_size);
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printf("Programming page: ");
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for (i = 0; i < total_size / page_size; i++) {
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if ((i >= exclude_start_page) && (i < exclude_end_page))
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continue;
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/* erase the page before programming */
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erase_block_jedec(bios, i * page_size);
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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_jedec(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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fflush(stdout);
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}
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printf("\n");
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/* protected */
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write_lockbits_49fl00x(flash->virtual_registers, total_size, 1,
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page_size);
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return 0;
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}
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