Add sharp flash
Corresponding to flashrom svn r40 and coreboot v2 svn r2180.
diff --git a/sharplhf00l04.c b/sharplhf00l04.c
new file mode 100644
index 0000000..e7e5eed
--- /dev/null
+++ b/sharplhf00l04.c
@@ -0,0 +1,155 @@
+/*
+ * sst28sf040.c: driver for SST28SF040C flash models.
+ *
+ *
+ * Copyright 2000 Silicon Integrated System Corporation
+ * Copyright 2005 coresystems GmbH <stepan@openbios.org>
+ *
+ * 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:
+ * 8 MEgabit (1024K x 8) SHARP LHF00L04, data sheet
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include "flash.h"
+#include "debug.h"
+
+
+#define AUTO_PG_ERASE1 0x20
+#define AUTO_PG_ERASE2 0xD0
+#define AUTO_PGRM 0x10
+#define CHIP_ERASE 0x30
+#define RESET 0xFF
+#define READ_ID 0x90
+
+static __inline__ void protect_lhf00l04(volatile uint8_t *bios)
+{
+ /* ask compiler not to optimize this */
+// volatile uint8_t tmp;
+
+}
+
+static __inline__ void unprotect_lhf00l04(volatile uint8_t *bios)
+{
+ /* ask compiler not to optimize this */
+// volatile uint8_t tmp;
+}
+
+static __inline__ int erase_sector_lhf00l04(volatile uint8_t *bios,
+ unsigned long address)
+{
+
+ return (0);
+}
+
+static __inline__ int write_sector_lhf00l04(volatile uint8_t *bios,
+ uint8_t *src,
+ volatile uint8_t *dst,
+ unsigned int page_size)
+{
+ int i;
+
+ for (i = 0; i < page_size; i++) {
+ /* transfer data from source to destination */
+ if (*src == 0xFF) {
+ dst++, src++;
+ /* If the data is 0xFF, don't program it */
+ continue;
+ }
+ /*issue AUTO PROGRAM command */
+ *dst = AUTO_PGRM;
+ *dst++ = *src++;
+
+ /* wait for Toggle bit ready */
+// toggle_ready_jedec(bios);
+ }
+
+ return (0);
+}
+
+int probe_lhf00l04(struct flashchip *flash)
+{
+ volatile uint8_t *bios = flash->virt_addr;
+ uint8_t id1, id2, tmp;
+
+ /* save the value at the beginning of the Flash */
+ tmp = *bios;
+
+ *bios = RESET;
+ myusec_delay(10);
+
+ *bios = READ_ID;
+ myusec_delay(10);
+ id1 = *(volatile uint8_t *) bios;
+ myusec_delay(10);
+ id2 = *(volatile uint8_t *) (bios + 0x01);
+
+ *bios = RESET;
+ myusec_delay(10);
+
+ printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
+ if (id1 == flash->manufacture_id && id2 == flash->model_id)
+ return 1;
+
+ /* if there is no lhf00l04, restore the original value */
+ *bios = tmp;
+ return 0;
+}
+
+int erase_lhf00l04(struct flashchip *flash)
+{
+ volatile uint8_t *bios = flash->virt_addr;
+
+ unprotect_lhf00l04(bios);
+ *bios = CHIP_ERASE;
+ *bios = CHIP_ERASE;
+ protect_lhf00l04(bios);
+
+ myusec_delay(10);
+// toggle_ready_jedec(bios);
+
+ return (0);
+}
+
+int write_lhf00l04(struct flashchip *flash, uint8_t *buf)
+{
+ int i;
+ int total_size = flash->total_size * 1024, page_size =
+ flash->page_size;
+ volatile uint8_t *bios = flash->virt_addr;
+
+ unprotect_lhf00l04(bios);
+
+ printf("Programming Page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ /* erase the page before programming */
+ erase_sector_lhf00l04(bios, i * page_size);
+
+ /* write to the sector */
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ write_sector_lhf00l04(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_lhf00l04(bios);
+
+ return (0);
+}