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flashrom: Support Pm49FL004/2 Block Locking Registers 

The PMC chips understand both LPC and FWH flash commands. When in FWH mode
(MSR_DIVIL_BALL_OPT(0x51400015) = 0x00000f7d on 5536 boards) the Block
Locking Registers by default lock the flash chip for write and erase - in
addition to any chipset write protection.

This patch adds unlock operations before Pm49FL004/2 write and erase, and
it includes an svn mv pm49fl004.c pm49fl00x.c

Thanks go to Nikolay for this patch.

Signed-off-by: Nikolay Petukhov <nikolay.petukhov@gmail.com>
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Bari Ari <bari@onelabs.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3332 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Nikolay Petukhov 2008-05-17 01:08:58 +00:00 committed by Peter Stuge
parent fb047a6a54
commit ce1fb9d4e9
5 changed files with 121 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
util/flashrom/Makefile
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@ -22,7 +22,7 @@ endif
OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.c \
sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o \
w49f002u.o 82802ab.o msys_doc.o pm49fl00x.o sst49lf040.o \
sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
ichspi.o

8
util/flashrom/flash.h
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@ -453,10 +453,10 @@ int probe_29f002(struct flashchip *flash);
int erase_29f002(struct flashchip *flash);
int write_29f002(struct flashchip *flash, uint8_t *buf);
/* pm49fl004.c */
int probe_49fl004(struct flashchip *flash);
int erase_49fl004(struct flashchip *flash);
int write_49fl004(struct flashchip *flash, uint8_t *buf);
/* pm49fl00x.c */
int probe_49fl00x(struct flashchip *flash);
int erase_49fl00x(struct flashchip *flash);
int write_49fl00x(struct flashchip *flash, uint8_t *buf);
/* sharplhf00l04.c */
int probe_lhf00l04(struct flashchip *flash);

4
util/flashrom/flashchips.c
View File

@ -64,8 +64,8 @@ struct flashchip flashchips[] = {
{"PMC", "Pm25LV040", PMC_ID, PMC_25LV040, 512, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV080B", PMC_ID, PMC_25LV080B, 1024, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm25LV512", PMC_ID, PMC_25LV512, 64, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
{"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49fl004},
{"PMC", "Pm49FL002", PMC_ID_NOPREFIX,PMC_49FL002, 256, 16 * 1024, TEST_UNTESTED, probe_49fl00x, erase_49fl00x, write_49fl00x},
{"PMC", "Pm49FL004", PMC_ID_NOPREFIX,PMC_49FL004, 512, 64 * 1024, TEST_OK_PREW, probe_49fl00x, erase_49fl00x, write_49fl00x},
{"Sharp", "LHF00L04", SHARP_ID, SHARP_LHF00L04, 1024, 64 * 1024, TEST_UNTESTED, probe_lhf00l04, erase_lhf00l04, write_lhf00l04},
{"Spansion", "S25FL016A", SPANSION_ID, SPANSION_S25FL016A, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},
{"SST", "SST25VF016B", SST_ID, SST_25VF016B, 2048, 256, TEST_UNTESTED, probe_spi_rdid, spi_chip_erase_c7, spi_chip_write, spi_chip_read},

51
util/flashrom/pm49fl004.c
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@ -1,51 +0,0 @@
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2004 Tyan Corporation
*
* 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 <stdio.h>
#include "flash.h"
extern int exclude_start_page, exclude_end_page;
int write_49fl004(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
if ((i >= exclude_start_page) && (i < exclude_end_page))
continue;
/* erase the page before programming */
erase_block_jedec(bios, i * page_size);
/* write to the sector */
printf("%04d at address: 0x%08x", i, i * page_size);
write_sector_jedec(bios, buf + i * page_size,
bios + i * page_size, page_size);
printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
fflush(stdout);
}
printf("\n");
return 0;
}

114
util/flashrom/pm49fl00x.c Normal file
View File

@ -0,0 +1,114 @@
/*
* 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 <stdio.h>
#include "flash.h"
extern int exclude_start_page, exclude_end_page;
void write_lockbits_49fl00x(volatile uint8_t *bios, int size,
unsigned char bits, int block_size)
{
int i, left = size;
for (i = 0; left >= block_size; i++, left -= block_size) {
/* pm49fl002 */
if (block_size == 16384 && i%2)
continue;
*(bios + (i * block_size) + 2) = bits;
}
}
int probe_49fl00x(struct flashchip *flash)
{
int ret = probe_jedec(flash);
if (ret == 1)
map_flash_registers(flash);
return ret;
}
int erase_49fl00x(struct flashchip *flash)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
/* unprotected */
write_lockbits_49fl00x(flash->virtual_registers, total_size, 0, page_size);
//erase_chip_jedec will not work ... datasheet says "Chip erase is available in A/A Mux Mode only"
printf("Erasing page: ");
for (i = 0; i < total_size / page_size; i++) {
if ((i >= exclude_start_page) && (i < exclude_end_page))
continue;
/* erase the page */
erase_block_jedec(bios, i * page_size);
printf("%04d at address: 0x%08x", i, i * page_size);
printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
fflush(stdout);
}
printf("\n");
/* protected */
write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
return 0;
}
int write_49fl00x(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
/* unprotected */
write_lockbits_49fl00x(flash->virtual_registers, total_size, 0, page_size);
printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
if ((i >= exclude_start_page) && (i < exclude_end_page))
continue;
/* erase the page before programming */
erase_block_jedec(bios, i * page_size);
/* write to the sector */
printf("%04d at address: 0x%08x", i, i * page_size);
write_sector_jedec(bios, buf + i * page_size,
bios + i * page_size, page_size);
printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
fflush(stdout);
}
printf("\n");
/* protected */
write_lockbits_49fl00x(flash->virtual_registers, total_size, 1, page_size);
return 0;
}