The generic jedec.c does not work for the ST M50FLW flash
devices, because they need an unlock command first. For this reason, ST M50FLW support is moved to a new HW support module, because any change in jedec.c would bear the risk to cause problems with the already supported devices. It's already tested with ST M50FLW080A; the other chips of this family i dont have available, so i couldnt test it. Signed-off-by: Claus Gindhart <claus.gindhart@kontron.com> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3274 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Claus Gindhart
Stefan Reinauer
parent
26e08b5abe
commit
b19973eb8b
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@ -16,15 +16,15 @@ OS_ARCH = $(shell uname)
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ifeq ($(OS_ARCH), SunOS)
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LDFLAGS = -lpci -lz
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else
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LDFLAGS = -lpci -lz -static
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LDFLAGS = -lpci -lz
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STRIP_ARGS = -s
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endif
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OBJS = chipset_enable.o board_enable.o udelay.o jedec.o sst28sf040.o \
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am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o w49f002u.o \
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82802ab.o msys_doc.o pm49fl004.o sst49lf040.o sst49lfxxxc.o \
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sst_fwhub.o layout.o cbtable.o flashchips.o flashrom.o \
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w39v080fa.o sharplhf00l04.o w29ee011.o spi.o
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OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.c \
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sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
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w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o \
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sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
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flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o
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all: pciutils dep $(PROGRAM)
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@ -427,4 +427,8 @@ int probe_w29ee011(struct flashchip *flash);
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/* w49f002u.c */
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int write_49f002(struct flashchip *flash, uint8_t *buf);
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/* stm50flw0x0x.c */
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int probe_stm50flw0x0x(struct flashchip *flash);
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int erase_stm50flw0x0x(struct flashchip *flash);
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int write_stm50flw0x0x(struct flashchip *flash, uint8_t *buf);
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#endif /* !__FLASH_H__ */
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@ -102,10 +102,10 @@ struct flashchip flashchips[] = {
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{"ST", "M29F400BT", ST_ID, ST_M29F400BT, 512, 64 * 1024, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt},
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{"ST", "M29W010B", ST_ID, ST_M29W010B, 128, 16 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M29W040B", ST_ID, ST_M29W040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M50FLW040A", ST_ID, ST_M50FLW040A, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M50FLW040B", ST_ID, ST_M50FLW040B, 512, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M50FLW080A", ST_ID, ST_M50FLW080A, 1024, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M50FLW080B", ST_ID, ST_M50FLW080B, 1024, 64 * 1024, probe_jedec, erase_chip_jedec, write_jedec},
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{"ST", "M50FLW040A", ST_ID, ST_M50FLW040A, 512, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
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{"ST", "M50FLW040B", ST_ID, ST_M50FLW040B, 512, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
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{"ST", "M50FLW080A", ST_ID, ST_M50FLW080A, 1024, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
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{"ST", "M50FLW080B", ST_ID, ST_M50FLW080B, 1024, 64 * 1024, probe_stm50flw0x0x, erase_stm50flw0x0x, write_stm50flw0x0x},
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{"ST", "M50FW016", ST_ID, ST_M50FW016, 2048, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
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{"ST", "M50FW040", ST_ID, ST_M50FW040, 512, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
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{"ST", "M50FW080", ST_ID, ST_M50FW080, 1024, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab},
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@ -0,0 +1,293 @@
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/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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/*
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* This module is designed for supporting the devices
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* ST M50FLW040A (not yet tested)
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* ST M50FLW040B (not yet tested)
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* ST M50FLW080A
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* ST M50FLW080B (not yet tested)
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include "flash.h"
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void protect_stm50flw0x0x(volatile uint8_t *bios)
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{
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*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
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*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
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*(volatile uint8_t *)(bios + 0x5555) = 0xA0;
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usleep(200);
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}
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int probe_stm50flw0x0x(struct flashchip *flash)
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{
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volatile uint8_t *bios = flash->virtual_memory;
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uint8_t id1, id2;
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uint32_t largeid1, largeid2;
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/* Issue JEDEC Product ID Entry command */
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*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
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myusec_delay(10);
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*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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*(volatile uint8_t *)(bios + 0x5555) = 0x90;
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myusec_delay(40);
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/* Read product ID */
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id1 = *(volatile uint8_t *)bios;
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id2 = *(volatile uint8_t *)(bios + 0x01);
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largeid1 = id1;
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largeid2 = id2;
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/* Check if it is a continuation ID, this should be a while loop. */
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if (id1 == 0x7F) {
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largeid1 <<= 8;
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id1 = *(volatile uint8_t *)(bios + 0x100);
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largeid1 |= id1;
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}
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if (id2 == 0x7F) {
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largeid2 <<= 8;
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id2 = *(volatile uint8_t *)(bios + 0x101);
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largeid2 |= id2;
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}
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/* Issue JEDEC Product ID Exit command */
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*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
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myusec_delay(10);
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*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
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myusec_delay(40);
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printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, largeid1,
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largeid2);
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if (largeid1 != flash->manufacture_id || largeid2 != flash->model_id)
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return 0;
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map_flash_registers(flash);
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return 1;
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}
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static void wait_stm50flw0x0x(volatile uint8_t *bios)
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{
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uint8_t id1;
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// id2;
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*bios = 0x70;
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if ((*bios & 0x80) == 0) { // it's busy
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while ((*bios & 0x80) == 0) ;
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}
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// put another command to get out of status register mode
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*bios = 0x90;
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myusec_delay(10);
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id1 = *(volatile uint8_t *)bios;
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// this is needed to jam it out of "read id" mode
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*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
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*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
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*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
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}
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/*
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* claus.gindhart@kontron.com
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* The ST M50FLW080B and STM50FLW080B chips have to be unlocked,
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* before you can erase them or write to them
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*/
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int unlock_block_stm50flw0x0x(struct flashchip *flash, int offset)
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{
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volatile uint8_t *flash_addr = flash->virtual_registers + 2;
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const uint8_t unlock_sector = 0x00;
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int j;
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/* These chips have to be unlocked before you can erase
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* them or write to them
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* The size of the locking sectors depends on the type
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* of chip
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*
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* Sometimes, the BIOS does this for you; so you propably
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* dont need to worry about that
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*/
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/* check, if it's is a top/bottom-block with 4k-sectors */
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/* TODO: What about the other types ? */
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if ((offset == 0) ||
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(offset == (flash->model_id == ST_M50FLW080A ? 0xE0000 : 0x10000))
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|| (offset == 0xF0000)) {
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// unlock each 4k-sector
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for (j = 0; j < 0x10000; j += 0x1000) {
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printf_debug("unlocking at 0x%x\n", offset + j);
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*(flash_addr + offset + j) = unlock_sector;
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if (*(flash_addr + offset + j) != unlock_sector)
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{
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printf("Cannot unlock sector @ 0x%x\n",offset + j);
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return -1;
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}
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}
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} else {
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printf_debug("unlocking at 0x%x\n", offset);
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*(flash_addr + offset) = unlock_sector;
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if (*(flash_addr + offset) != unlock_sector)
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{
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printf("Cannot unlock sector @ 0x%x\n", offset);
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return -1;
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}
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}
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return 0;
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}
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int erase_block_stm50flw0x0x(struct flashchip *flash, int offset)
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{
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volatile uint8_t *bios = flash->virtual_memory + offset;
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int j;
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// clear status register
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*bios = 0x50;
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printf_debug("Erase at %p\n", bios);
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// now start it
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*(volatile uint8_t *)(bios) = 0x20;
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*(volatile uint8_t *)(bios) = 0xd0;
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myusec_delay(10);
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wait_stm50flw0x0x(flash->virtual_memory);
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for (j = 0; j < flash->page_size; j++) {
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if (*(bios + j) != 0xFF) {
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printf("Erase failed at 0x%x\n", offset + j);
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return -1;
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}
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}
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printf("DONE BLOCK 0x%x\n", offset);
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return 0;
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}
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int write_page_stm50flw0x0x(volatile uint8_t *bios, uint8_t *src,
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volatile uint8_t *dst, int page_size)
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{
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int i, rc=0;
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volatile uint8_t *d = dst;
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uint8_t *s = src;
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/* transfer data from source to destination */
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for (i = 0; i < page_size; i++) {
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*dst = 0x40;
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*dst++ = *src++;
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wait_stm50flw0x0x(bios);
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}
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/* claus.gindhart@kontron.com
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* TODO
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* I think, that verification is not required, but
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* i leave it in anyway
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*/
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dst = d;
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src = s;
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for (i = 0; i < page_size; i++) {
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if (*dst != *src) {
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rc = -1;
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break;
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}
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dst++;
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src++;
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}
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if (rc) {
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fprintf(stderr, " page %d failed!\n",
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(unsigned int)(d - bios) / page_size);
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}
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return rc;
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}
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/* I simply erase block by block
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* I Chip This is not the fastest way, but it works
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*/
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int erase_stm50flw0x0x(struct flashchip *flash)
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{
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int i,rc=0;
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int total_size = flash->total_size * 1024;
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int page_size = flash->page_size;
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volatile uint8_t *bios = flash->virtual_memory;
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printf("Erasing page:\n");
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for (i = 0;(i < total_size / page_size) && (rc==0); i++) {
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printf
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("\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");
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printf("%04d at address: 0x%08x ", i, i * page_size);
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rc = unlock_block_stm50flw0x0x(flash, i * page_size);
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if (!rc) rc = erase_block_stm50flw0x0x(flash, i * page_size);
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}
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printf("\n");
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protect_stm50flw0x0x(bios);
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return rc;
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}
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int write_stm50flw0x0x(struct flashchip *flash, uint8_t * buf)
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{
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int i,rc=0;
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int total_size = flash->total_size * 1024;
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int page_size = flash->page_size;
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volatile uint8_t *bios = flash->virtual_memory;
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printf("Programming page: \n");
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for (i = 0;(i < total_size / page_size) && (rc==0); i++) {
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printf
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("\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");
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printf("%04d at address: 0x%08x ", i, i * page_size);
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/* Auto Skip Blocks, which already contain the desired data
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* Faster, because we only write, what has changed
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* More secure, because blocks, which are excluded
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* (with the exclude or layout feature)
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* are not erased and rewritten; data is retained also
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* in sudden power off situations
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*/
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if (!memcmp((void *)(buf + i * page_size),
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(void *)(bios + i * page_size), page_size)) {
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printf("SKIPPED\n");
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continue;
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}
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rc = unlock_block_stm50flw0x0x(flash, i * page_size);
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if (!rc) rc = erase_block_stm50flw0x0x(flash, i * page_size);
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if (!rc) write_page_stm50flw0x0x(bios, buf + i * page_size,
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bios + i * page_size, page_size);
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}
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printf("\n");
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protect_stm50flw0x0x(bios);
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return rc;
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}
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Loading…
Reference in New Issue