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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2004 Tyan Corporation
* Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com>
* Copyright (C) 2007 Reinder E.N. de Haan <lb_reha@mveas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "flash.h"
static void write_lockbits_49fl00x(const struct flashctx *flash,
unsigned int size, unsigned char bits,
unsigned int block_size)
{
unsigned int i, left = size;
chipaddr bios = flash->virtual_registers;
for (i = 0; left >= block_size; i++, left -= block_size) {
/* pm49fl002 */
if (block_size == 16384 && i % 2)
continue;
chip_writeb(flash, bits, bios + (i * block_size) + 2);
}
}
int unlock_49fl00x(struct flashctx *flash)
{
write_lockbits_49fl00x(flash, flash->chip->total_size * 1024, 0,
flash->chip->page_size);
return 0;
}
int lock_49fl00x(struct flashctx *flash)
{
write_lockbits_49fl00x(flash, flash->chip->total_size * 1024, 1,
flash->chip->page_size);
return 0;
}
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