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https://review.coreboot.org/flashrom.git
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1c296ca8bc
The deleted function in en29f002a.c is reintroduced as write_by_byte_jedec in jedec.c as it contains no chip-specific instructions. It is not yet used in other chip drivers, as key addresses (0x2AAA/0x5555) are often specified with less bits. After crosschecking datasheets, most of the fixmes can probably be resolved as indicated in them, causing significant code reduction. The common JEDEC code for bytewise programming does not program 0xFF at all. The chips that had a dedicated bytewise flash function which has been changed to write_jedec_1 thus changed flashing behaviour and the "write" test flag has been removed. This applies to: AMD Am29F002BB/Am29F002NBB AMD Am29F002BT/Am29F002NBT (TEST_OK_PREW before) AMIC A29002B AMIC A29002T (TEST_OK_PREW before) EON EN29F002(A)(N)B EON EN29F002(A)(N)T (TEST_OK_PREW before) Macronix MX29F001B (TEST_OK_PREW before) Macronix MX29F001T (TEST_OK_PREW before) Macronix MX29F002B Macronix MX29F002T (TEST_OK_PREW before) Macronix MX29LV040 Similar analysis should be performed for the read id stuff. Corresponding to flashrom svn r785. Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de> Acked-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
129 lines
3.5 KiB
C
129 lines
3.5 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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chipaddr 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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programmer_delay(10);
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toggle_ready_jedec(bios);
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if (check_erased_range(flash, 0, flash->total_size * 1024)) {
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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 rewrite_block(struct flashchip *flash, uint8_t *src,
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unsigned long start, int size)
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{
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chipaddr bios = flash->virtual_memory;
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chipaddr dst = bios + start;
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/* erase */
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/* FIXME: use erase_sector_jedec? */
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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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programmer_delay(10);
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toggle_ready_jedec(bios);
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if (check_erased_range(flash, start, size)) {
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fprintf(stderr, "ERASE FAILED!\n");
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return -1;
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}
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/* program */
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/* FIXME: use write_sector_jedec? */
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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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return 0;
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}
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static int do_block(struct flashchip *flash, uint8_t *src, int i,
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unsigned long start, int size)
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{
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int ret;
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printf("%d at address: 0x%08lx", i, start);
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ret = rewrite_block(flash, src + start, start, size);
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if (ret)
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return ret;
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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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return 0;
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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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/* 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(flash, buf, i, i * page_size, page_size);
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do_block(flash, buf, i++, 0x30000, 32 * 1024);
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do_block(flash, buf, i++, 0x38000, 8 * 1024);
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do_block(flash, buf, i++, 0x3a000, 8 * 1024);
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do_block(flash, 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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/* 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(flash, buf, i++, 0x00000, 16 * 1024);
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do_block(flash, buf, i++, 0x04000, 8 * 1024);
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do_block(flash, buf, i++, 0x06000, 8 * 1024);
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do_block(flash, buf, i++, 0x08000, 32 * 1024);
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for (; i < 7; i++)
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do_block(flash, 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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