/*
- * m29f400bt.c: driver for programming JEDEC standard flash parts
+ * This file is part of the flashrom project.
*
+ * Copyright (C) 2000 Silicon Integrated System Corporation
*
- * 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 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.
*
- * 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:
- *
- * $Id$
+ * 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 "flash.h"
-#include "m29f400bt.h"
+
+void protect_m29f400bt(volatile uint8_t *bios)
+{
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xA0;
+
+ usleep(200);
+}
+
+void write_page_m29f400bt(volatile uint8_t *bios, uint8_t *src,
+ volatile uint8_t *dst, int page_size)
+{
+ int i;
+
+ for (i = 0; i < page_size; i++) {
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xA0;
+
+ /* transfer data from source to destination */
+ *dst = *src;
+ //*(volatile char *) (bios) = 0xF0;
+ //usleep(5);
+ toggle_ready_jedec(dst);
+ printf
+ ("Value in the flash at address %p = %#x, want %#x\n",
+ (uint8_t *) (dst - bios), *dst, *src);
+ dst++;
+ src++;
+ }
+}
int probe_m29f400bt(struct flashchip *flash)
{
- volatile char *bios = flash->virt_addr;
- unsigned char id1, id2;
+ volatile uint8_t *bios = flash->virtual_memory;
+ uint8_t id1, id2;
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- *(volatile char *) (bios + 0xAAA) = 0x90;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0x90;
myusec_delay(10);
- id1 = *(volatile unsigned char *) bios;
- id2 = *(volatile unsigned char *) (bios + 0x02);
+ id1 = *(volatile uint8_t *)bios;
+ /* The data sheet says id2 is at (bios + 0x01) and id2 listed in
+ * flash.h does not match. It should be possible to use JEDEC probe.
+ */
+ id2 = *(volatile uint8_t *)(bios + 0x02);
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- *(volatile char *) (bios + 0xAAA) = 0xF0;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xF0;
myusec_delay(10);
- printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
-
+ printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
int erase_m29f400bt(struct flashchip *flash)
{
- volatile char *bios = flash->virt_addr;
+ volatile uint8_t *bios = flash->virtual_memory;
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- *(volatile char *) (bios + 0xAAA) = 0x80;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0x80;
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- *(volatile char *) (bios + 0xAAA) = 0x10;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0x10;
myusec_delay(10);
- toggle_ready_m29f400bt(bios);
+ toggle_ready_jedec(bios);
- return (0);
+ return 0;
}
-int block_erase_m29f400bt(volatile char *bios, volatile char *dst)
+int block_erase_m29f400bt(volatile uint8_t *bios, volatile uint8_t *dst)
{
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- *(volatile char *) (bios + 0xAAA) = 0x80;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0x80;
- *(volatile char *) (bios + 0xAAA) = 0xAA;
- *(volatile char *) (bios + 0x555) = 0x55;
- //*(volatile char *) (bios + 0xAAA) = 0x10;
+ *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x555) = 0x55;
+ //*(volatile uint8_t *) (bios + 0xAAA) = 0x10;
*dst = 0x30;
myusec_delay(10);
- toggle_ready_m29f400bt(bios);
+ toggle_ready_jedec(bios);
- return (0);
+ return 0;
}
-int write_m29f400bt(struct flashchip *flash, unsigned char *buf)
+int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
{
int i;
- int total_size = flash->total_size * 1024, page_size =
- flash->page_size;
- volatile char *bios = flash->virt_addr;
+ int total_size = flash->total_size * 1024;
+ int page_size = flash->page_size;
+ volatile uint8_t *bios = flash->virtual_memory;
//erase_m29f400bt (flash);
- printf("Programming Page:\n ");
+ printf("Programming page:\n ");
/*********************************
*Pages for M29F400BT:
* 16 0x7c000 0x7ffff TOP
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("\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);
+ 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);
+ 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);
+ 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);
+ write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);
printf("\n");
//protect_m29f400bt (bios);
- return (0);
+ return 0;
}
-int write_linuxbios_m29f400bt(struct flashchip *flash, unsigned char *buf)
+int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf)
{
- volatile char *bios = flash->virt_addr;
+ volatile uint8_t *bios = flash->virtual_memory;
- printf("Programming Page:\n ");
+ printf("Programming page:\n ");
/*********************************
*Pages for M29F400BT:
* 16 0x7c000 0x7ffff TOP
*********************************/
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);
+ 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);
+ 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);
+ 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);
+ write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000, 64 * 1024);
printf("\n");
//protect_m29f400bt (bios);
- return (0);
+ return 0;
}
projects / coreboot.git / blobdiff