flashrom: Driver for ST M29F002T/NT/B. T/NT TEST_OK_ PROBE READ ERASE WRITE

Test report from Julia. Thanks!

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Julia Longtin <juri@solarnetone.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3917 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

4 files changed, 116 insertions, 6 deletions

diff --git a/util/flashrom/Makefile b/util/flashrom/Makefile
index 4388b53f40..cf9570a6bc 100644
--- a/util/flashrom/Makefile
+++ b/util/flashrom/Makefile
@@ -34,7 +34,7 @@ OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.o \
 	w49f002u.o 82802ab.o pm49fl00x.o sst49lf040.o en29f002a.o \
 	sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o physmap.o \
 	flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
-	ichspi.o w39v040c.o sb600spi.o wbsio_spi.o
+	ichspi.o w39v040c.o sb600spi.o wbsio_spi.o m29f002.o
 
 all: pciutils dep $(PROGRAM)
 
diff --git a/util/flashrom/flash.h b/util/flashrom/flash.h
index c74bacb399..3985c600db 100644
--- a/util/flashrom/flash.h
+++ b/util/flashrom/flash.h
@@ -579,6 +579,11 @@ int erase_block_jedec(volatile uint8_t *bios, unsigned int page);
 int write_sector_jedec(volatile uint8_t *bios, uint8_t *src,
 		       volatile uint8_t *dst, unsigned int page_size);
 
+/* m29f002.c */
+int erase_m29f002(struct flashchip *flash);
+int write_m29f002t(struct flashchip *flash, uint8_t *buf);
+int write_m29f002b(struct flashchip *flash, uint8_t *buf);
+
 /* m29f400bt.c */
 int probe_m29f400bt(struct flashchip *flash);
 int erase_m29f400bt(struct flashchip *flash);
diff --git a/util/flashrom/flashchips.c b/util/flashrom/flashchips.c
index 1d0d23f13d..7d56b17948 100644
--- a/util/flashrom/flashchips.c
+++ b/util/flashrom/flashchips.c
@@ -1641,8 +1641,8 @@ struct flashchip flashchips[] = {
 		.page_size	= 64 * 1024,
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_jedec,
-		.erase		= erase_chip_jedec,
-		.write		= write_jedec,
+		.erase		= erase_m29f002,
+		.write		= write_m29f002b,
 	},
 
 	{
@@ -1652,10 +1652,10 @@ struct flashchip flashchips[] = {
 		.model_id	= ST_M29F002T,
 		.total_size	= 256,
 		.page_size	= 64 * 1024,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_jedec,
-		.erase		= erase_chip_jedec,
-		.write		= write_jedec,
+		.erase		= erase_m29f002,
+		.write		= write_m29f002t,
 	},
 
 	{
diff --git a/util/flashrom/m29f002.c b/util/flashrom/m29f002.c
new file mode 100644
index 0000000000..a8365873ea
--- /dev/null
+++ b/util/flashrom/m29f002.c
@@ -0,0 +1,105 @@
+/*
+ * This file is part of flashrom.
+ *
+ * Copyright (C) 2009 Peter Stuge <peter@stuge.se>
+ *
+ * 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"
+
+int erase_m29f002(struct flashchip *flash) {
+	volatile uint8_t *bios = flash->virtual_memory;
+	*(volatile uint8_t *)(bios + 0x555) = 0xaa;
+	*(volatile uint8_t *)(bios + 0xaaa) = 0x55;
+	*(volatile uint8_t *)(bios + 0x555) = 0x80;
+	*(volatile uint8_t *)(bios + 0x555) = 0xaa;
+	*(volatile uint8_t *)(bios + 0xaaa) = 0x55;
+	*(volatile uint8_t *)(bios + 0x555) = 0x10;
+	myusec_delay(10);
+	toggle_ready_jedec(bios);
+	return 0;
+}
+
+static void rewrite_block(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst, int size) {
+	/* erase */
+	*(volatile uint8_t *)(bios + 0x555) = 0xaa;
+	*(volatile uint8_t *)(bios + 0xaaa) = 0x55;
+	*(volatile uint8_t *)(bios + 0x555) = 0x80;
+	*(volatile uint8_t *)(bios + 0x555) = 0xaa;
+	*(volatile uint8_t *)(bios + 0xaaa) = 0x55;
+	*dst = 0x30;
+	myusec_delay(10);
+	toggle_ready_jedec(bios);
+
+	/* program */
+	while (size--) {
+		*(volatile uint8_t *)(bios + 0x555) = 0xaa;
+		*(volatile uint8_t *)(bios + 0xaaa) = 0x55;
+		*(volatile uint8_t *)(bios + 0x555) = 0xa0;
+		*dst = *src;
+		toggle_ready_jedec(dst);
+		dst++;
+		src++;
+	}
+}
+
+static void do_block(volatile uint8_t *bios, uint8_t *src, int i, unsigned long start, int size) {
+	printf("%d at address: 0x%08lx", i, start);
+	rewrite_block(bios, src + start, bios + start, 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");
+}
+
+int write_m29f002t(struct flashchip *flash, uint8_t *buf) {
+	int i, page_size = flash->page_size;
+	volatile uint8_t *bios = flash->virtual_memory;
+
+	/* M29F002(N)T has 7 blocks. From bottom to top their sizes are:
+	 * 64k 64k 64k 32k 8k 8k 16k
+	 * flash->page_size is set to 64k in flashchips.c
+	 */
+
+	printf("Programming block: ");
+	for (i = 0; i < 3; i++)
+		do_block(bios, buf, i, i*page_size, page_size);
+	do_block(bios, buf, i++, 0x30000, 32*1024);
+	do_block(bios, buf, i++, 0x38000, 8*1024);
+	do_block(bios, buf, i++, 0x3a000, 8*1024);
+	do_block(bios, buf, i++, 0x3c000, 16*1024);
+
+	printf("\n");
+	return 0;
+}
+
+int write_m29f002b(struct flashchip *flash, uint8_t *buf) {
+	int i = 0, page_size = flash->page_size;
+	volatile uint8_t *bios = flash->virtual_memory;
+
+	/* M29F002B has 7 blocks. From bottom to top their sizes are:
+	 * 16k 8k 8k 32k 64k 64k 64k
+	 * flash->page_size is set to 64k in flashchips.c
+	 */
+
+	printf("Programming block: ");
+	do_block(bios, buf, i++, 0x00000, 16*1024);
+	do_block(bios, buf, i++, 0x04000, 8*1024);
+	do_block(bios, buf, i++, 0x06000, 8*1024);
+	do_block(bios, buf, i++, 0x08000, 32*1024);
+	for (; i < 7; i++)
+		do_block(bios, buf, i, (i-3)*page_size, page_size);
+
+	printf("\n");
+	return 0;
+}