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Diffstat (limited to 'util/flash_and_burn/m29f400bt.c')
-rw-r--r--util/flash_and_burn/m29f400bt.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/util/flash_and_burn/m29f400bt.c b/util/flash_and_burn/m29f400bt.c
new file mode 100644
index 0000000000..a19c8cd6ca
--- /dev/null
+++ b/util/flash_and_burn/m29f400bt.c
@@ -0,0 +1,189 @@
+/*
+ * m29f400bt.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 "m29f400bt.h"
+
+int probe_m29f400bt (struct flashchip * flash)
+{
+ volatile char * bios = flash->virt_addr;
+ unsigned char id1, id2;
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ *(volatile char *) (bios + 0xAAA) = 0x90;
+
+ myusec_delay(10);
+
+ id1 = *(volatile unsigned char *) bios;
+ id2 = *(volatile unsigned char *) (bios + 0x02);
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ *(volatile char *) (bios + 0xAAA) = 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_m29f400bt (struct flashchip * flash)
+{
+ volatile char * bios = flash->virt_addr;
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ *(volatile char *) (bios + 0xAAA) = 0x80;
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ *(volatile char *) (bios + 0xAAA) = 0x10;
+
+ myusec_delay(10);
+ toggle_ready_m29f400bt(bios);
+
+ return(0);
+}
+
+int block_erase_m29f400bt (volatile char * bios ,volatile char * dst)
+{
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ *(volatile char *) (bios + 0xAAA) = 0x80;
+
+ *(volatile char *) (bios + 0xAAA) = 0xAA;
+ *(volatile char *) (bios + 0x555) = 0x55;
+ //*(volatile char *) (bios + 0xAAA) = 0x10;
+ *dst = 0x30;
+
+ myusec_delay(10);
+ toggle_ready_m29f400bt(bios);
+
+ return(0);
+}
+
+int write_m29f400bt (struct flashchip * flash, unsigned char * buf)
+{
+ int i;
+ int total_size = flash->total_size *1024, page_size = flash->page_size;
+ volatile char * bios = flash->virt_addr;
+
+ //erase_m29f400bt (flash);
+ printf ("Programming Page:\n ");
+ /*********************************
+ *Pages for M29F400BT:
+ * 16 0x7c000 0x7ffff TOP
+ * 8 0x7a000 0x7bfff
+ * 8 0x78000 0x79fff
+ * 32 0x70000 0x77fff
+ * 64 0x60000 0x6ffff
+ * 64 0x50000 0x5ffff
+ * 64 0x40000 0x4ffff
+ *---------------------------------
+ * 64 0x30000 0x3ffff
+ * 64 0x20000 0x2ffff
+ * 64 0x10000 0x1ffff
+ * 64 0x00000 0x0ffff BOTTOM
+ *********************************/
+ printf("total_size/page_size = %d\n",total_size/page_size);
+ for (i = 0; i < (total_size/page_size)-1; i++) {
+ printf("%04d at address: 0x%08x\n", i, i * page_size);
+ block_erase_m29f400bt(bios, bios + i * page_size);
+ write_page_m29f400bt(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("%04d at address: 0x%08x\n",7,0x70000);
+ block_erase_m29f400bt(bios , bios + 0x70000);
+ write_page_m29f400bt(bios,buf + 0x70000, bios + 0x70000, 32*1024);
+
+ printf("%04d at address: 0x%08x\n",8,0x78000);
+ block_erase_m29f400bt(bios , bios + 0x78000);
+ write_page_m29f400bt(bios,buf + 0x78000, bios + 0x78000, 8*1024);
+
+ printf("%04d at address: 0x%08x\n",9,0x7a000);
+ block_erase_m29f400bt(bios , bios + 0x7a000);
+ write_page_m29f400bt(bios,buf + 0x7a000, bios + 0x7a000, 8*1024);
+
+ printf("%04d at address: 0x%08x\n",10,0x7c000);
+ block_erase_m29f400bt(bios , bios + 0x7c000);
+ write_page_m29f400bt(bios,buf + 0x7c000, bios + 0x7c000, 16*1024);
+
+ printf("\n");
+ //protect_m29f400bt (bios);
+
+ return(0);
+}
+
+int write_linuxbios_m29f400bt (struct flashchip * flash, unsigned char * buf)
+{
+ volatile char * bios = flash->virt_addr;
+
+ printf ("Programming Page:\n ");
+ /*********************************
+ *Pages for M29F400BT:
+ * 16 0x7c000 0x7ffff TOP
+ * 8 0x7a000 0x7bfff
+ * 8 0x78000 0x79fff
+ * 32 0x70000 0x77fff
+ * 64 0x60000 0x6ffff
+ * 64 0x50000 0x5ffff
+ * 64 0x40000 0x4ffff
+ *---------------------------------
+ * 64 0x30000 0x3ffff
+ * 64 0x20000 0x2ffff
+ * 64 0x10000 0x1ffff
+ * 64 0x00000 0x0ffff BOTTOM
+ *********************************/
+ printf("%04d at address: 0x%08x\n",7,0x00000);
+ block_erase_m29f400bt(bios , bios + 0x00000);
+ write_page_m29f400bt(bios,buf + 0x00000, bios + 0x00000, 64*1024);
+
+ printf("%04d at address: 0x%08x\n",7,0x10000);
+ block_erase_m29f400bt(bios , bios + 0x10000);
+ write_page_m29f400bt(bios,buf + 0x10000, bios + 0x10000, 64*1024);
+
+ printf("%04d at address: 0x%08x\n",7,0x20000);
+ block_erase_m29f400bt(bios , bios + 0x20000);
+ write_page_m29f400bt(bios,buf + 0x20000, bios + 0x20000, 64*1024);
+
+ printf("%04d at address: 0x%08x\n",7,0x30000);
+ block_erase_m29f400bt(bios , bios + 0x30000);
+ write_page_m29f400bt(bios,buf + 0x30000, bios + 0x30000, 64*1024);
+
+ printf("\n");
+ //protect_m29f400bt (bios);
+
+ return(0);
+}