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Diffstat (limited to 'util/flashrom/sst49lf040.c')
-rw-r--r--util/flashrom/sst49lf040.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/util/flashrom/sst49lf040.c b/util/flashrom/sst49lf040.c
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+/* sst40lf020.c: driver for SST40LF040 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:
+ * 4 MEgabit (512K x 8) SuperFlash EEPROM, SST49lF040 data sheet
+ *
+ * ToDo: Consilidated to standard JEDEC code.
+ *
+ * $Id$
+ */
+#include <stdio.h>
+#include "flash.h"
+#include "jedec.h"
+#include "sst49lf040.h"
+
+int erase_49lf040(struct flashchip *flash)
+{
+ int i;
+ int total_size = flash->total_size * 1024;
+ int page_size = flash->page_size;
+ volatile char *bios = flash->virt_addr;
+
+ for (i = 0; i < total_size / page_size; i++) {
+ /* Chip erase only works in parallel programming mode
+ * for the 49lf040. Use sector-erase instead */
+ erase_sector_jedec(bios, i * page_size);
+ }
+ return 0;
+}
+
+int write_49lf040(struct flashchip *flash, unsigned char *buf)
+{
+ int i;
+ int total_size = flash->total_size * 1024;
+ int page_size = flash->page_size;
+ volatile char *bios = flash->virt_addr;
+
+ printf("Programming Page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ /* erase the page before programming
+ * Chip erase only works in parallel programming mode
+ * for the 49lf040. Use sector-erase instead */
+ erase_sector_jedec(bios, i * page_size);
+
+ /* write to the sector */
+ 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\b");
+ fflush(stdout);
+ }
+ printf("\n");
+
+ return (0);
+}