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5bd11dc847
Change-Id: Id6063cb5d406d7139abf7fcdf2ae265363640f9f Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/28207 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
91 lines
2.3 KiB
C
91 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) 2000 Silicon Integrated System Corporation
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* Copyright (C) 2009 Kontron Modular Computers
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* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.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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/* Adapted from the Intel FW hub stuff for 82802ax parts. */
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#include "flash.h"
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static int check_sst_fwhub_block_lock(struct flashctx *flash, int offset)
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{
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chipaddr registers = flash->virtual_registers;
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uint8_t blockstatus;
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blockstatus = chip_readb(flash, registers + offset + 2);
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msg_cdbg("Lock status for 0x%06x (size 0x%06x) is %02x, ",
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offset, flash->chip->page_size, blockstatus);
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switch (blockstatus & 0x3) {
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case 0x0:
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msg_cdbg("full access\n");
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break;
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case 0x1:
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msg_cdbg("write locked\n");
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break;
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case 0x2:
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msg_cdbg("locked open\n");
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break;
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case 0x3:
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msg_cdbg("write locked down\n");
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break;
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}
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/* Return content of the write_locked bit */
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return blockstatus & 0x1;
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}
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static int clear_sst_fwhub_block_lock(struct flashctx *flash, int offset)
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{
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chipaddr registers = flash->virtual_registers;
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uint8_t blockstatus;
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blockstatus = check_sst_fwhub_block_lock(flash, offset);
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if (blockstatus) {
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msg_cdbg("Trying to clear lock for 0x%06x... ", offset);
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chip_writeb(flash, 0, registers + offset + 2);
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blockstatus = check_sst_fwhub_block_lock(flash, offset);
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msg_cdbg("%s\n", (blockstatus) ? "failed" : "OK");
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}
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return blockstatus;
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}
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int printlock_sst_fwhub(struct flashctx *flash)
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{
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int i;
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for (i = 0; i < flash->chip->total_size * 1024; i += flash->chip->page_size)
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check_sst_fwhub_block_lock(flash, i);
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return 0;
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}
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int unlock_sst_fwhub(struct flashctx *flash)
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{
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int i, ret=0;
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for (i = 0; i < flash->chip->total_size * 1024; i += flash->chip->page_size)
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{
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if (clear_sst_fwhub_block_lock(flash, i))
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{
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msg_cwarn("Warning: Unlock Failed for block 0x%06x\n", i);
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ret++;
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}
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}
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return ret;
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}
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