flashrom: 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.

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


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3431 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 98 insertions, 0 deletions

diff --git a/util/flashrom/w39v040c.c b/util/flashrom/w39v040c.c
new file mode 100644
index 0000000000..ce025969f7
--- /dev/null
+++ b/util/flashrom/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;
+}