mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-27 15:12:36 +02:00
63fd9026f1
Struct flashchip is used only for the flashchips array and for operations which do not access hardware, e.g. printing a list of supported flash chips. struct flashctx (flash context) contains all data available in struct flashchip, but it also contains runtime information like mapping addresses. struct flashctx is expected to grow additional members over time, a prime candidate being programmer info. struct flashctx contains all of struct flashchip with identical member layout, but struct flashctx has additional members at the end. The separation between struct flashchip/flashctx shrinks the memory requirement of the big flashchips array and allows future extension of flashctx without having to worry about bloat. Corresponding to flashrom svn r1473. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
|
|
* This file is part of the flashrom project.
|
|
*
|
|
* Copyright (C) 2000 Silicon Integrated System Corporation
|
|
* Copyright (C) 2005-2007 coresystems GmbH
|
|
* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.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"
|
|
#include "chipdrivers.h"
|
|
|
|
static int write_lockbits_block_49lfxxxc(struct flashctx *flash, unsigned long address, unsigned char bits)
|
|
{
|
|
unsigned long lock = flash->virtual_registers + address + 2;
|
|
msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock, chip_readb(lock));
|
|
chip_writeb(bits, lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_lockbits_49lfxxxc(struct flashctx *flash, unsigned char bits)
|
|
{
|
|
chipaddr registers = flash->virtual_registers;
|
|
unsigned int i, left = flash->total_size * 1024;
|
|
unsigned long address;
|
|
|
|
msg_cdbg("\nbios=0x%08lx\n", registers);
|
|
for (i = 0; left > 65536; i++, left -= 65536) {
|
|
write_lockbits_block_49lfxxxc(flash, i * 65536, bits);
|
|
}
|
|
address = i * 65536;
|
|
write_lockbits_block_49lfxxxc(flash, address, bits);
|
|
address += 32768;
|
|
write_lockbits_block_49lfxxxc(flash, address, bits);
|
|
address += 8192;
|
|
write_lockbits_block_49lfxxxc(flash, address, bits);
|
|
address += 8192;
|
|
write_lockbits_block_49lfxxxc(flash, address, bits);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int unlock_49lfxxxc(struct flashctx *flash)
|
|
{
|
|
return write_lockbits_49lfxxxc(flash, 0);
|
|
}
|
|
|
|
int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address, unsigned int sector_size)
|
|
{
|
|
uint8_t status;
|
|
chipaddr bios = flash->virtual_memory;
|
|
|
|
chip_writeb(0x30, bios);
|
|
chip_writeb(0xD0, bios + address);
|
|
|
|
status = wait_82802ab(flash);
|
|
print_status_82802ab(status);
|
|
|
|
/* FIXME: Check the status register for errors. */
|
|
return 0;
|
|
}
|