Oops
Forgot to add the file.
Support for the Winbond W39V080FA series of chips. Support for flashing
on the Kontron 986LCD-M board.
Corresponding to flashrom svn r214 and coreboot v2 svn r3166.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/w39v080fa.c b/w39v080fa.c
new file mode 100644
index 0000000..8547fb3
--- /dev/null
+++ b/w39v080fa.c
@@ -0,0 +1,206 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * 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_winbond_fwhub(struct flashchip *flash)
+{
+ volatile uint8_t *bios = flash->virtual_memory;
+ uint8_t vid, did;
+
+ /* Product Identification Entry */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0x90;
+ myusec_delay(10);
+
+ /* Read product ID */
+ vid = *(volatile uint8_t *)bios;
+ did = *(volatile uint8_t *)(bios + 0x01);
+
+ /* Product Identifixation Exit */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
+ myusec_delay(10);
+
+ printf_debug("%s: vid 0x%x, did 0x%x\n", __FUNCTION__, vid, did);
+
+ if (vid != flash->manufacture_id || did != flash->model_id)
+ return 0;
+
+ map_flash_registers(flash);
+
+ return 1;
+}
+
+static int unlock_block_winbond_fwhub(struct flashchip *flash, int offset)
+{
+ volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
+ uint8_t locking;
+
+ printf_debug("Trying to unlock block @0x%08x = 0x%02x\n", offset, *wrprotect);
+
+ locking = *wrprotect;
+ switch (locking & 0x7 ) {
+ case 0:
+ printf_debug("Full Access.\n");
+ return 0;
+ case 1:
+ printf_debug("Write Lock (Default State).\n");
+ *wrprotect = 0;
+ return 0;
+ case 2:
+ printf_debug("Locked Open (Full Access, Lock Down).\n");
+ return 0;
+ case 3:
+ fprintf(stderr, "Error: Write Lock, Locked Down.\n");
+ return -1;
+ case 4:
+ printf_debug("Read Lock.\n");
+ *wrprotect = 0;
+ return 0;
+ case 5:
+ printf_debug("Read/Write Lock.\n");
+ *wrprotect = 0;
+ return 0;
+ case 6:
+ fprintf(stderr, "Error: Read Lock, Locked Down.\n");
+ return -1;
+ case 7:
+ fprintf(stderr, "Error: Read/Write Lock, Locked Down.\n");
+ return -1;
+ }
+
+ /* We will never reach this point, but GCC doesn't know */
+ return -1;
+}
+
+int unlock_winbond_fwhub(struct flashchip *flash)
+{
+ int i, total_size = flash->total_size * 1024;
+ volatile uint8_t *bios = flash->virtual_memory;
+ uint8_t locking;
+
+ /* Are there any hardware restrictions that we can't overcome?
+ * If flashrom fail here, someone's got to check all those GPIOs.
+ */
+
+ /* Product Identification Entry */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0x90;
+ myusec_delay(10);
+
+ /* Read Hardware Lock Bits */
+ locking = *(volatile uint8_t *)(bios + 0xffff2);
+
+ /* Product Identification Exit */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
+ myusec_delay(10);
+
+ printf_debug("Lockout bits:\n");
+
+ if (locking & (1<<2))
+ fprintf(stderr, "Error: hardware bootblock locking (#TBL).\n");
+ else
+ printf_debug("No hardware bootblock locking (good!)\n");
+
+ if (locking & (1<<3))
+ fprintf(stderr, "Error: hardware block locking (#WP).\n");
+ else
+ printf_debug("No hardware block locking (good!)\n");
+
+ if (locking & ((1<<2) | (1<<3)))
+ return -1;
+
+ /* Unlock the complete chip */
+ for (i = 0; i < total_size; i += flash->page_size)
+ if (unlock_block_winbond_fwhub(flash, i))
+ return -1;
+
+ return 0;
+}
+
+static int erase_sector_winbond_fwhub(volatile uint8_t *bios, unsigned int sector)
+{
+ /* Remember: too much sleep can waste your day. */
+
+ printf("0x%08x\b\b\b\b\b\b\b\b\b\b", sector);
+
+ /* Sector Erase */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0x80;
+
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + sector) = 0x30;
+
+ /* wait for Toggle bit ready */
+ toggle_ready_jedec(bios);
+
+ return 0;
+}
+
+int erase_winbond_fwhub(struct flashchip *flash)
+{
+ int i, total_size = flash->total_size * 1024;
+ volatile uint8_t *bios = flash->virtual_memory;
+
+ printf("Erasing: ");
+
+ for (i = 0; i < total_size; i += flash->page_size)
+ erase_sector_winbond_fwhub(bios, i);
+
+ printf("\n");
+
+ for (i = 0; i < total_size; i++) {
+ if (bios[i] != 0xff) {
+ fprintf(stderr, "Error: Flash chip erase failed at 0x%08x(0x%02x)\n", i, bios[i]);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int write_winbond_fwhub(struct flashchip *flash, uint8_t *buf)
+{
+ int i;
+ int total_size = flash->total_size * 1024;
+ volatile uint8_t *bios = flash->virtual_memory;
+
+ if (erase_winbond_fwhub(flash))
+ return -1;
+
+ printf("Programming: ");
+ for (i = 0; i < total_size; i+=flash->page_size) {
+ printf("0x%08x\b\b\b\b\b\b\b\b\b\b", i);
+ write_sector_jedec(bios, buf + i, bios + i, flash->page_size);
+ }
+ printf("\n");
+
+ return 0;
+}
+