This chip is found in the ThinkPad T20. Implementation is from datasheet only, test welcome. Be prepared for eventual failures, and do not reboot if verify after write fails.
Signed-off-by: Michael Karcher flashrom@mkarcher.dialup.fu-berlin.de --- Makefile | 2 +- chipdrivers.h | 4 ++ flashchips.c | 31 +++++++++++++++++++ flashchips.h | 2 + i28f00x.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 129 insertions(+), 1 deletions(-) create mode 100644 i28f00x.c
diff --git a/Makefile b/Makefile index cdd45d1..2b882d4 100644 --- a/Makefile +++ b/Makefile @@ -44,7 +44,7 @@ endif CHIP_OBJS = jedec.o stm50flw0x0x.o w39v080fa.o sharplhf00l04.o w29ee011.o \ sst28sf040.o am29f040b.o mx29f002.o m29f400bt.o pm29f002.o w39v040c.o \ w49f002u.o 82802ab.o pm49fl00x.o sst49lf040.o en29f002a.o m29f002.o \ - sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o + sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o i28f00x.o
LIB_OBJS = layout.o
diff --git a/chipdrivers.h b/chipdrivers.h index e7261e0..be1d00b 100644 --- a/chipdrivers.h +++ b/chipdrivers.h @@ -52,11 +52,15 @@ int spi_nbyte_read(int addr, uint8_t *bytes, int len); int spi_read_chunked(struct flashchip *flash, uint8_t *buf, int start, int len, int chunksize); int spi_aai_write(struct flashchip *flash, uint8_t *buf);
+/* i28f00x.c */ +int write_28f00x(struct flashchip *flash, uint8_t *buf); + /* 82802ab.c */ uint8_t wait_82802ab(chipaddr bios); int probe_82802ab(struct flashchip *flash); int erase_82802ab(struct flashchip *flash); int erase_82802ab_block(struct flashchip *flash, unsigned int page, unsigned int pagesize); +void write_page_82802ab(chipaddr bios, uint8_t *src, chipaddr dst, int page_size); int write_82802ab(struct flashchip *flash, uint8_t *buf);
/* am29f040b.c */ diff --git a/flashchips.c b/flashchips.c index 8e90d2a..3698c8c 100644 --- a/flashchips.c +++ b/flashchips.c @@ -2385,6 +2385,37 @@ struct flashchip flashchips[] = {
{ .vendor = "Intel", + .name = "28F004BV/BE-T", + .bustype = CHIP_BUSTYPE_PARALLEL, + .manufacture_id = INTEL_ID, + .model_id = P28F004BT, + .total_size = 512, + .page_size = 128 * 1024, /* for write_i28f00x: maximal block size */ + .tested = TEST_UNTESTED, + .probe = probe_jedec, + .probe_timing = TIMING_ZERO, /* Datasheet has no timing info specified */ + .erase = NULL, + .block_erasers = + { + { + /* Keep this the first block_erasers + entry. The write functions spies here to + get the chip layout */ + .eraseblocks = { + {128 * 1024, 3}, + {96 * 1024, 1}, + {8 * 1024, 2}, + {16 * 1024, 1}, + }, + .block_erase = erase_82802ab_block, + }, + }, + .write = write_28f00x, + .read = read_memmapped, + }, + + { + .vendor = "Intel", .name = "82802AB", .bustype = CHIP_BUSTYPE_FWH, .manufacture_id = INTEL_ID, diff --git a/flashchips.h b/flashchips.h index 2a4d93b..21d7ad5 100644 --- a/flashchips.h +++ b/flashchips.h @@ -256,6 +256,8 @@ #define I_82802AC 0xAC #define P28F001BXT 0x94 /* 28F001BX-T */ #define P28F001BXB 0x95 /* 28F001BX-B */ +#define P28F004BT 0x78 /* 28F004BV/BE-T */ +#define P28F004BB 0x79 /* 28F004BV/BE-B */ #define SHARP_LH28F008SA 0xA2 /* Sharp chip, Intel Vendor ID */ #define SHARP_LH28F008SC 0xA6 /* Sharp chip, Intel Vendor ID */
diff --git a/i28f00x.c b/i28f00x.c new file mode 100644 index 0000000..f312fb1 --- /dev/null +++ b/i28f00x.c @@ -0,0 +1,91 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2010 Michael Karcher flashrom@mkarcher.dialup.fu-berlin.de + * + * 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 + */ + +/* based on the Intel 82802A/B code which is + * Copyright (C) 2000 Silicon Integrated System Corporation + */ + +/* + * Datasheet: + * - Name: 4-Mbit (256K x 16, 512K x 8) SmartVoltage DataSheet + * - URL: http://www.intel.com/design/archives/flash/docs/290530.HTM + * - PDF: http://download.intel.com/design/archives/flash/docs/29053006.pdf + * - Order number: 290430-006 + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "flash.h" +#include "chipdrivers.h" + +int write_28f00x(struct flashchip *flash, uint8_t *buf) +{ + int i, j, blocknum; + chipaddr bios = flash->virtual_memory; + int blockoffset = 0; + uint8_t *tmpbuf = malloc(flash->page_size); + struct eraseblock * blocks = flash->block_erasers[0].eraseblocks; + + if (!tmpbuf) { + printf("Could not allocate memory!\n"); + exit(1); + } + printf("Programming block: \n"); + blocknum = 0; + for (i = 0; blocks[i].size != 0; i++) { + for(j = 0; j < blocks[i].count; j++) { + 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"); + printf("%04d at address: 0x%08x", blocknum, + blockoffset); + + /* Auto Skip Blocks, which already contain the + * desired data Faster, because we only write, what + * has changed More secure, because blocks, which + * are excluded (with the exclude or layout feature) + * or not erased and rewritten; their data is + * retained also in sudden power off situations + */ + chip_readn(tmpbuf, bios + blockoffset, blocks[i].size); + if (!memcmp((void *)(buf + blockoffset), tmpbuf, + blocks[i].size)) { + printf("SKIPPED\n"); + continue; + } + + /* erase block by block and write block by block; + this is the most secure way */ + if (erase_82802ab_block(flash, blockoffset, + blocks[i].size)) { + fprintf(stderr, "ERASE FAILED!\n"); + return -1; + } + write_page_82802ab(bios, buf + blockoffset, + bios + blockoffset, blocks[i].size); + blockoffset += blocks[i].size; + blocknum++; + } + } + printf("\n"); + free(tmpbuf); + + return 0; +}
-
Michael Karcher