Winbond W39V040C and MSI K8T Neo2-F

W39V040C does standard JEDEC commands except chip erase so add a small driver.
probe_w39v040c() prints the block lock pin status when a chip is found.

The Neo2 board enable matches on 8237-internal IDE and onboard NIC PCI IDs.

Many thanks to Daniel McLellan for testing all of this on hardware!
Build tested by Uwe.

Corresponding to flashrom svn r304 and coreboot v2 svn r3431.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

Makefile

@@ -29,7 +29,7 @@ OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.o \
 	w49f002u.o 82802ab.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
+	ichspi.o w39v040c.o
 
 all: pciutils dep $(PROGRAM)
 

board_enable.c

@@ -114,6 +114,7 @@ static int w83627hf_gpio24_raise_2e(const char *name)
  * Winbond W83627THF: GPIO 4, bit 4
  *
  * Suited for:
+ *  - MSI K8T Neo2-F
  *  - MSI K8N-NEO3
  */
 static int w83627thf_gpio4_4_raise(uint16_t index, const char *name)
@@ -141,6 +142,11 @@ static int w83627thf_gpio4_4_raise(uint16_t index, const char *name)
 	return 0;
 }
 
+static int w83627thf_gpio4_4_raise_2e(const char *name)
+{
+	return w83627thf_gpio4_4_raise(0x2e, name);
+}
+
 static int w83627thf_gpio4_4_raise_4e(const char *name)
 {
 	return w83627thf_gpio4_4_raise(0x4e, name);
@@ -617,6 +623,8 @@ struct board_pciid_enable board_pciid_enables[] = {
  	 NULL, NULL, "BioStar P4M80-M4", board_biostar_p4m80_m4},
  	{0x1106, 0x3227, 0x1458, 0x5001, 0x10ec, 0x8139, 0x1458, 0xe000,
  	 NULL, NULL, "GIGABYTE GA-7VT600", board_biostar_p4m80_m4},
+	{0x1106, 0x3149, 0x1462, 0x7094, 0x10ec, 0x8167, 0x1462, 0x094c,
+	 NULL, NULL, "MSI K8T Neo2", w83627thf_gpio4_4_raise_2e},
 	{0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL}	/* Keep this */
 };
 

flash.h

@@ -517,6 +517,11 @@ int probe_sst_fwhub(struct flashchip *flash);
 int erase_sst_fwhub(struct flashchip *flash);
 int write_sst_fwhub(struct flashchip *flash, uint8_t *buf);
 
+/* w39v040c.c */
+int probe_w39v040c(struct flashchip *flash);
+int erase_w39v040c(struct flashchip *flash);
+int write_w39v040c(struct flashchip *flash, uint8_t *buf);
+
 /* w39V080fa.c */
 int probe_winbond_fwhub(struct flashchip *flash);
 int erase_winbond_fwhub(struct flashchip *flash);

flashchips.c

@@ -132,6 +132,7 @@ struct flashchip flashchips[] = {
 	{"Winbond",	"W29EE011",		WINBOND_ID,	W_29C011,		128,	128,		TEST_OK_PREW,	probe_w29ee011,		erase_chip_jedec,		write_jedec},
 	{"Winbond",	"W39V040A",		WINBOND_ID,	W_39V040A,		512,	64*1024,	TEST_UNTESTED,	probe_jedec,		erase_chip_jedec,		write_39sf020},
 	{"Winbond",	"W39V040B",		WINBOND_ID,	W_39V040B,		512,	64*1024,	TEST_OK_PREW,	probe_jedec,		erase_chip_jedec,		write_39sf020},
+	{"Winbond",	"W39V040C",		0xda,		0x50,			512,	64*1024,	TEST_OK_PREW,	probe_w39v040c,		erase_w39v040c,			write_w39v040c},
 	{"Winbond",	"W39V040FA",		WINBOND_ID,	W_39V040FA,		512,	64*1024,	TEST_OK_PR,	probe_jedec,		erase_chip_jedec,		write_39sf020},
 	{"Winbond",	"W39V080A",		WINBOND_ID,	W_39V080A,		1024,	64*1024,	TEST_OK_PREW,	probe_jedec,		erase_chip_jedec,		write_39sf020},
 	{"Winbond",	"W49F002U",		WINBOND_ID,	W_49F002U,		256,	128,		TEST_OK_PREW,	probe_jedec,		erase_chip_jedec,		write_49f002},

w39v040c.c

@@ -0,0 +1,98 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2008 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 <stdio.h>
+#include "flash.h"
+
+int probe_w39v040c(struct flashchip *flash)
+{
+	volatile uint8_t *bios = flash->virtual_memory;
+	uint8_t id1, id2, lock;
+
+	*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile uint8_t *)(bios + 0x5555) = 0x90;
+	myusec_delay(10);
+
+	id1 = *(volatile uint8_t *)bios;
+	id2 = *(volatile uint8_t *)(bios + 1);
+	lock = *(volatile uint8_t *)(bios + 0xfff2);
+
+	*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
+	myusec_delay(40);
+
+	printf_debug("%s: id1 0x%x, id2 0x%x", __func__, id1, id2);
+	if (!oddparity(id1))
+		printf_debug(", id1 parity violation");
+	printf_debug("\n");
+	if (flash->manufacture_id == id1 && flash->model_id == id2) {
+		printf("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
+			__func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
+		return 1;
+	}
+
+	return 0;
+}
+
+int erase_w39v040c(struct flashchip *flash)
+{
+	int i;
+	unsigned int total_size = flash->total_size * 1024;
+	volatile uint8_t *bios = flash->virtual_memory;
+
+	for (i = 0; i < total_size; i += flash->page_size)
+		erase_sector_jedec(flash->virtual_memory, i);
+
+	for (i = 0; i < total_size; i++)
+		if (0xff != bios[i]) {
+			printf("ERASE FAILED at 0x%08x!  Expected=0xff, Read=0x%02x\n", i, bios[i]);
+			return -1;
+		}
+
+	return 0;
+}
+
+int write_w39v040c(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;
+
+	if (flash->erase(flash))
+		return -1;
+
+	printf("Programming page: ");
+	for (i = 0; i < total_size / page_size; i++) {
+		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");
+	}
+	printf("\n");
+
+	return 0;
+}