mirror of
https://review.coreboot.org/flashrom.git
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8a3c60cdd0
All programmer access function prototypes except init have been made static and moved to the respective file. A few internal functions in flash chip drivers had chipaddr parameters which are no longer needed. The lines touched by flashctx changes have been adjusted to 80 columns except in header files. Corresponding to flashrom svn r1474. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2007 Markus Boas <ryven@ryven.de>
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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 <string.h>
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#include "flash.h"
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/* According to the Winbond W29EE011, W29EE012, W29C010M, W29C011A
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* datasheets this is the only valid probe function for those chips.
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*/
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int probe_w29ee011(struct flashctx *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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if (!chip_to_probe || strcmp(chip_to_probe, flash->name)) {
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msg_cdbg("Old Winbond W29* probe method disabled because "
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"the probing sequence puts the AMIC A49LF040A in "
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"a funky state. Use 'flashrom -c %s' if you "
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"have a board with such a chip.\n", flash->name);
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return 0;
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}
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/* Issue JEDEC Product ID Entry command */
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chip_writeb(flash, 0xAA, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(flash, 0x55, bios + 0x2AAA);
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programmer_delay(10);
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chip_writeb(flash, 0x80, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(flash, 0xAA, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(flash, 0x55, bios + 0x2AAA);
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programmer_delay(10);
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chip_writeb(flash, 0x60, bios + 0x5555);
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programmer_delay(10);
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/* Read product ID */
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id1 = chip_readb(flash, bios);
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id2 = chip_readb(flash, bios + 0x01);
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/* Issue JEDEC Product ID Exit command */
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chip_writeb(flash, 0xAA, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(flash, 0x55, bios + 0x2AAA);
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programmer_delay(10);
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chip_writeb(flash, 0xF0, bios + 0x5555);
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programmer_delay(10);
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msg_cdbg("%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 1;
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return 0;
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}
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