mirror of
https://review.coreboot.org/flashrom.git
synced 2025-04-26 22:52:34 +02:00
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>
129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*
|
|
* This file is part of the flashrom project.
|
|
*
|
|
* Copyright (C) 2000 Silicon Integrated System Corporation
|
|
* Copyright (C) 2005 coresystems GmbH <stepan@openbios.org>
|
|
* 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"
|
|
|
|
#define AUTO_PG_ERASE1 0x20
|
|
#define AUTO_PG_ERASE2 0xD0
|
|
#define AUTO_PGRM 0x10
|
|
#define CHIP_ERASE 0x30
|
|
#define RESET 0xFF
|
|
#define READ_ID 0x90
|
|
|
|
int protect_28sf040(struct flashctx *flash)
|
|
{
|
|
chipaddr bios = flash->virtual_memory;
|
|
|
|
chip_readb(flash, bios + 0x1823);
|
|
chip_readb(flash, bios + 0x1820);
|
|
chip_readb(flash, bios + 0x1822);
|
|
chip_readb(flash, bios + 0x0418);
|
|
chip_readb(flash, bios + 0x041B);
|
|
chip_readb(flash, bios + 0x0419);
|
|
chip_readb(flash, bios + 0x040A);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int unprotect_28sf040(struct flashctx *flash)
|
|
{
|
|
chipaddr bios = flash->virtual_memory;
|
|
|
|
chip_readb(flash, bios + 0x1823);
|
|
chip_readb(flash, bios + 0x1820);
|
|
chip_readb(flash, bios + 0x1822);
|
|
chip_readb(flash, bios + 0x0418);
|
|
chip_readb(flash, bios + 0x041B);
|
|
chip_readb(flash, bios + 0x0419);
|
|
chip_readb(flash, bios + 0x041A);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int erase_sector_28sf040(struct flashctx *flash, unsigned int address,
|
|
unsigned int sector_size)
|
|
{
|
|
chipaddr bios = flash->virtual_memory;
|
|
|
|
/* This command sequence is very similar to erase_block_82802ab. */
|
|
chip_writeb(flash, AUTO_PG_ERASE1, bios);
|
|
chip_writeb(flash, AUTO_PG_ERASE2, bios + address);
|
|
|
|
/* wait for Toggle bit ready */
|
|
toggle_ready_jedec(flash, bios);
|
|
|
|
/* FIXME: Check the status register for errors. */
|
|
return 0;
|
|
}
|
|
|
|
/* chunksize is 1 */
|
|
int write_28sf040(struct flashctx *flash, uint8_t *src, unsigned int start,
|
|
unsigned int len)
|
|
{
|
|
int i;
|
|
chipaddr bios = flash->virtual_memory;
|
|
chipaddr dst = flash->virtual_memory + start;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
/* transfer data from source to destination */
|
|
if (*src == 0xFF) {
|
|
dst++, src++;
|
|
/* If the data is 0xFF, don't program it */
|
|
continue;
|
|
}
|
|
/*issue AUTO PROGRAM command */
|
|
chip_writeb(flash, AUTO_PGRM, dst);
|
|
chip_writeb(flash, *src++, dst++);
|
|
|
|
/* wait for Toggle bit ready */
|
|
toggle_ready_jedec(flash, bios);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int erase_28sf040(struct flashctx *flash)
|
|
{
|
|
chipaddr bios = flash->virtual_memory;
|
|
|
|
chip_writeb(flash, CHIP_ERASE, bios);
|
|
chip_writeb(flash, CHIP_ERASE, bios);
|
|
|
|
programmer_delay(10);
|
|
toggle_ready_jedec(flash, bios);
|
|
|
|
/* FIXME: Check the status register for errors. */
|
|
return 0;
|
|
}
|
|
|
|
int erase_chip_28sf040(struct flashctx *flash, unsigned int addr,
|
|
unsigned int blocklen)
|
|
{
|
|
if ((addr != 0) || (blocklen != flash->total_size * 1024)) {
|
|
msg_cerr("%s called with incorrect arguments\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
return erase_28sf040(flash);
|
|
}
|