rename the directory to match the program name

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2102 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 219 insertions, 0 deletions

diff --git a/util/flashrom/jedec.c b/util/flashrom/jedec.c
new file mode 100644
index 0000000000..353b17ab98
--- /dev/null
+++ b/util/flashrom/jedec.c
@@ -0,0 +1,219 @@
+/*
+ * jedec.c: driver for programming JEDEC standard flash parts
+ *
+ *
+ * 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:
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+#include "flash.h"
+#include "jedec.h"
+
+int probe_jedec(struct flashchip *flash)
+{
+	volatile unsigned char *bios = flash->virt_addr;
+	unsigned char id1, id2;
+
+	/* Issue JEDEC Product ID Entry command */
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 0x90;
+	myusec_delay(10);
+
+	/* Read product ID */
+	id1 = *(volatile unsigned char *) bios;
+	id2 = *(volatile unsigned char *) (bios + 0x01);
+
+	/* Issue JEDEC Product ID Exit command */
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 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_sector_jedec(volatile unsigned char *bios, unsigned int page)
+{
+	/*  Issue the Sector Erase command   */
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 0x80;
+	myusec_delay(10);
+
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + page)   = 0x30;
+	myusec_delay(10);
+
+	/* wait for Toggle bit ready         */
+	toggle_ready_jedec(bios);
+
+	return (0);
+}
+
+int erase_block_jedec(volatile unsigned char *bios, unsigned int block)
+{
+	/*  Issue the Sector Erase command   */
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 0x80;
+	myusec_delay(10);
+
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + block)  = 0x50;
+	myusec_delay(10);
+
+	/* wait for Toggle bit ready         */
+	toggle_ready_jedec(bios);
+
+	return (0);
+}
+
+int erase_chip_jedec(struct flashchip *flash)
+{
+	volatile unsigned char *bios = flash->virt_addr;
+
+	/*  Issue the JEDEC Chip Erase command   */
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 0x80;
+	myusec_delay(10);
+
+	*(volatile char *) (bios + 0x5555) = 0xAA;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x2AAA) = 0x55;
+	myusec_delay(10);
+	*(volatile char *) (bios + 0x5555) = 0x10;
+	myusec_delay(10);
+
+	toggle_ready_jedec(bios);
+
+	return (0);
+}
+
+int write_page_write_jedec(volatile unsigned char *bios, unsigned char *src,
+			   volatile unsigned char *dst, int page_size)
+{
+	int i;
+
+	/* Issue JEDEC Data Unprotect comand */
+	*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
+	*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
+	*(volatile unsigned char *) (bios + 0x5555) = 0xA0;
+
+	/* transfer data from source to destination */
+	for (i = 0; i < page_size; i++) {
+		/* If the data is 0xFF, don't program it */
+		if (*src == 0xFF)
+			continue;
+		*dst++ = *src++;
+	}
+
+	toggle_ready_jedec(dst - 1);
+
+	return 0;
+}
+
+int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src,
+			     volatile unsigned char *dst)
+{
+	int tried = 0;
+
+	/* If the data is 0xFF, don't program it */
+	if (*src == 0xFF) {
+		return 0;
+	}
+
+retry:
+	/* Issue JEDEC Byte Program command */
+	*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
+	*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
+	*(volatile unsigned char *) (bios + 0x5555) = 0xA0;
+
+	/* transfer data from source to destination */
+	*dst = *src;
+	toggle_ready_jedec(bios);
+
+	if (*dst != *src && tried++ < 0x10) {
+ 		goto retry;
+ 	}
+
+	return 0;
+}
+
+int write_sector_jedec(volatile unsigned char *bios, unsigned char *src,
+		       volatile unsigned char *dst, unsigned int page_size)
+{
+	int i;
+
+	for (i = 0; i < page_size; i++) {
+		write_byte_program_jedec(bios, src, dst);
+		dst++, src++;
+	}
+
+	return (0);
+}
+
+int write_jedec(struct flashchip *flash, unsigned char *buf)
+{
+	int i;
+	int total_size = flash->total_size * 1024;
+	int page_size = flash->page_size;
+	volatile unsigned char *bios = flash->virt_addr;
+
+	erase_chip_jedec(flash);
+	if (*bios != (unsigned char) 0xff) {
+		printf("ERASE FAILED\n");
+		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_page_write_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");
+	protect_jedec(bios);
+
+	return (0);
+}