d086e5d966
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4117 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
113 lines
3.2 KiB
C
113 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) 2009 Peter Stuge <peter@stuge.se>
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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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int erase_m29f002(struct flashchip *flash)
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{
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volatile uint8_t *bios = flash->virtual_memory;
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chip_writeb(0xaa, bios + 0x555);
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chip_writeb(0x55, bios + 0xaaa);
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chip_writeb(0x80, bios + 0x555);
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chip_writeb(0xaa, bios + 0x555);
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chip_writeb(0x55, bios + 0xaaa);
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chip_writeb(0x10, bios + 0x555);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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return 0;
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}
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static void rewrite_block(volatile uint8_t *bios, uint8_t *src,
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volatile uint8_t *dst, int size)
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{
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/* erase */
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chip_writeb(0xaa, bios + 0x555);
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chip_writeb(0x55, bios + 0xaaa);
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chip_writeb(0x80, bios + 0x555);
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chip_writeb(0xaa, bios + 0x555);
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chip_writeb(0x55, bios + 0xaaa);
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chip_writeb(0x30, dst);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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/* program */
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while (size--) {
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chip_writeb(0xaa, bios + 0x555);
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chip_writeb(0x55, bios + 0xaaa);
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chip_writeb(0xa0, bios + 0x555);
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chip_writeb(*src, dst);
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toggle_ready_jedec(dst);
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dst++;
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src++;
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}
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}
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static void do_block(volatile uint8_t *bios, uint8_t *src, int i,
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unsigned long start, int size)
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{
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printf("%d at address: 0x%08lx", i, start);
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rewrite_block(bios, src + start, bios + start, 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");
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}
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int write_m29f002t(struct flashchip *flash, uint8_t *buf)
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{
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int i, page_size = flash->page_size;
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volatile uint8_t *bios = flash->virtual_memory;
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/* M29F002(N)T has 7 blocks. From bottom to top their sizes are:
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* 64k 64k 64k 32k 8k 8k 16k
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* flash->page_size is set to 64k in flashchips.c
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*/
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printf("Programming block: ");
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for (i = 0; i < 3; i++)
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do_block(bios, buf, i, i * page_size, page_size);
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do_block(bios, buf, i++, 0x30000, 32 * 1024);
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do_block(bios, buf, i++, 0x38000, 8 * 1024);
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do_block(bios, buf, i++, 0x3a000, 8 * 1024);
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do_block(bios, buf, i, 0x3c000, 16 * 1024);
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printf("\n");
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return 0;
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}
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int write_m29f002b(struct flashchip *flash, uint8_t *buf)
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{
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int i = 0, page_size = flash->page_size;
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volatile uint8_t *bios = flash->virtual_memory;
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/* M29F002B has 7 blocks. From bottom to top their sizes are:
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* 16k 8k 8k 32k 64k 64k 64k
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* flash->page_size is set to 64k in flashchips.c
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*/
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printf("Programming block: ");
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do_block(bios, buf, i++, 0x00000, 16 * 1024);
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do_block(bios, buf, i++, 0x04000, 8 * 1024);
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do_block(bios, buf, i++, 0x06000, 8 * 1024);
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do_block(bios, buf, i++, 0x08000, 32 * 1024);
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for (; i < 7; i++)
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do_block(bios, buf, i, (i - 3) * page_size, page_size);
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printf("\n");
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return 0;
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}
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