Trying to make this general purpose user-land flash burner
Corresponding to coreboot v1 svn r489.
diff --git a/jedec.c b/jedec.c
new file mode 100644
index 0000000..73a399c
--- /dev/null
+++ b/jedec.c
@@ -0,0 +1,88 @@
+/*
+ * 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 "flash.h"
+#include "jedec.h"
+
+int probe_jedec (struct flashchip * flash)
+{
+ char * bios = flash->virt_addr;
+ unsigned char id1, id2;
+
+ *(char *) (bios + 0x5555) = 0xAA;
+ *(char *) (bios + 0x2AAA) = 0x55;
+ *(char *) (bios + 0x5555) = 0x90;
+
+ usleep(10);
+
+ id1 = *(unsigned char *) bios;
+ id2 = *(unsigned char *) (bios + 0x01);
+
+ *(char *) (bios + 0x5555) = 0xAA;
+ *(char *) (bios + 0x2AAA) = 0x55;
+ *(char *) (bios + 0x5555) = 0xF0;
+
+ usleep(10);
+
+ if (id1 == flash->manufacture_id && id2 == flash->model_id)
+ return 1;
+
+ return 0;
+}
+
+int erase_jedec (struct flashchip * flash)
+{
+ char * bios = flash->virt_addr;
+
+ *(char *) (bios + 0x5555) = 0xAA;
+ *(char *) (bios + 0x2AAA) = 0x55;
+ *(char *) (bios + 0x5555) = 0x80;
+
+ *(char *) (bios + 0x5555) = 0xAA;
+ *(char *) (bios + 0x2AAA) = 0x55;
+ *(char *) (bios + 0x5555) = 0x10;
+
+ usleep(10);
+ toggle_ready_jedec(bios);
+}
+
+int write_jedec (struct flashchip * flash, char * buf)
+{
+ int i;
+ int total_size = flash->total_size *1024, page_size = flash->page_size;
+ char * bios = flash->virt_addr;
+
+ erase_jedec (flash);
+ printf ("Programming Page: ");
+ for (i = 0; i < total_size/page_size; i++) {
+ printf ("%04d at address: 0x%08x", i, i * page_size);
+ write_page_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);
+}