mirror of
https://review.coreboot.org/flashrom.git
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ed479d2a87
Corresponding to flashrom svn r982. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2008 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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#include "chipdrivers.h"
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int printlock_w39v040c(struct flashchip *flash)
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{
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chipaddr bios = flash->virtual_memory;
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uint8_t lock;
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chip_writeb(0xAA, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(0x55, bios + 0x2AAA);
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programmer_delay(10);
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chip_writeb(0x90, bios + 0x5555);
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programmer_delay(10);
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lock = chip_readb(bios + 0xfff2);
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chip_writeb(0xAA, bios + 0x5555);
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programmer_delay(10);
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chip_writeb(0x55, bios + 0x2AAA);
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programmer_delay(10);
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chip_writeb(0xF0, bios + 0x5555);
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programmer_delay(40);
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msg_cdbg("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
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__func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
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return 0;
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}
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