From 7d5c7a7f1794cf846f2b62813c81f0f2a0ac5b54 Mon Sep 17 00:00:00 2001
From: Stefan Reinauer <stepan@openbios.org>
Date: Thu, 24 Nov 2005 10:45:34 +0000
Subject: rename the directory to match the program name

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2102 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 util/flashrom/mx29f002.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 util/flashrom/mx29f002.c

(limited to 'util/flashrom/mx29f002.c')

diff --git a/util/flashrom/mx29f002.c b/util/flashrom/mx29f002.c
new file mode 100644
index 0000000000..b281528935
--- /dev/null
+++ b/util/flashrom/mx29f002.c
@@ -0,0 +1,119 @@
+/*
+ * mx29f002.c: driver for MXIC MX29F002 flash models
+ *
+ *
+ * Copyright 2000 Silicon Integrated System Corporation
+ *
+ *	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * Reference:
+ *	MX29F002/002N data sheet
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+#include "flash.h"
+#include "jedec.h"
+#include "mx29f002.h"
+
+int probe_29f002(struct flashchip *flash)
+{
+	volatile char *bios = flash->virt_addr;
+	unsigned char id1, id2;
+
+	*(bios + 0x5555) = 0xAA;
+	*(bios + 0x2AAA) = 0x55;
+	*(bios + 0x5555) = 0x90;
+
+	id1 = *(volatile unsigned char *) bios;
+	id2 = *(volatile unsigned char *) (bios + 0x01);
+
+	*bios = 0xF0;
+
+	myusec_delay(10);
+
+	printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
+	if (id1 == flash->manufacture_id && id2 == flash->model_id)
+		return 1;
+
+	return 0;
+}
+
+int erase_29f002(struct flashchip *flash)
+{
+	volatile char *bios = flash->virt_addr;
+
+	*(bios + 0x555) = 0xF0;
+	*(bios + 0x555) = 0xAA;
+	*(bios + 0x2AA) = 0x55;
+	*(bios + 0x555) = 0x80;
+	*(bios + 0x555) = 0xAA;
+	*(bios + 0x2AA) = 0x55;
+	*(bios + 0x555) = 0x10;
+
+	myusec_delay(100);
+	toggle_ready_jedec(bios);
+
+	//   while ((*bios & 0x40) != 0x40)
+	//;
+
+#if 0
+	toggle_ready_jedec(bios);
+	*(bios + 0x0ffff) = 0x30;
+	*(bios + 0x1ffff) = 0x30;
+	*(bios + 0x2ffff) = 0x30;
+	*(bios + 0x37fff) = 0x30;
+	*(bios + 0x39fff) = 0x30;
+	*(bios + 0x3bfff) = 0x30;
+#endif
+
+	return (0);
+}
+
+int write_29f002(struct flashchip *flash, unsigned char *buf)
+{
+	int i;
+	int total_size = flash->total_size * 1024;
+	volatile char *bios = flash->virt_addr;
+	volatile char *dst = bios;
+
+	*bios = 0xF0;
+	myusec_delay(10);
+	erase_29f002(flash);
+	//*bios = 0xF0;
+#if 1
+	printf("Programming Page: ");
+	for (i = 0; i < total_size; i++) {
+		/* write to the sector */
+		if ((i & 0xfff) == 0)
+			printf("address: 0x%08lx", (unsigned long) i);
+		*(bios + 0x5555) = 0xAA;
+		*(bios + 0x2AAA) = 0x55;
+		*(bios + 0x5555) = 0xA0;
+		*dst++ = *buf++;
+
+		/* wait for Toggle bit ready */
+		toggle_ready_jedec(dst);
+
+		if ((i & 0xfff) == 0)
+			printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+	}
+#endif
+	printf("\n");
+
+	return (0);
+}
-- 
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