/*
- * lhf00l04.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: http://www.intel.com/design/chipsets/datashts/290658.htm
+ * 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 <errno.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
-
#include "flash.h"
-#include "sharplhf00l04.h"
-#include "debug.h"
// I need that Berkeley bit-map printer
void print_lhf00l04_status(uint8_t status)
int probe_lhf00l04(struct flashchip *flash)
{
- volatile uint8_t *bios = flash->virt_addr;
+ volatile uint8_t *bios = flash->virtual_memory;
uint8_t id1, id2;
#if 0
- *(volatile uint8_t *) (bios + 0x5555) = 0xAA;
- *(volatile uint8_t *) (bios + 0x2AAA) = 0x55;
- *(volatile uint8_t *) (bios + 0x5555) = 0x90;
+ /* Enter ID mode */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0x90;
#endif
*bios = 0xff;
*bios = 0x90;
myusec_delay(10);
- id1 = *(volatile uint8_t *) bios;
- id2 = *(volatile uint8_t *) (bios + 0x01);
+ id1 = *(volatile uint8_t *)bios;
+ id2 = *(volatile uint8_t *)(bios + 0x01);
-#if 1
- *(volatile uint8_t *) (bios + 0x5555) = 0xAA;
- *(volatile uint8_t *) (bios + 0x2AAA) = 0x55;
- *(volatile uint8_t *) (bios + 0x5555) = 0xF0;
+ /* Leave ID mode */
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
-#endif
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) {
- size_t size = flash->total_size * 1024;
- // we need to mmap the write-protect space.
- bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
- flash->fd_mem, (off_t) (0 - 0x400000 - size));
- if (bios == MAP_FAILED) {
- // it's this part but we can't map it ...
- perror("Error MMAP /dev/mem");
- exit(1);
- }
-
- flash->virt_addr_2 = bios;
- printf("bios %p, *bios 0x%x, bios[1] 0x%x\n", bios, *bios, bios[1]);
- return 1;
- }
+ if (id1 != flash->manufacture_id || id2 != flash->model_id)
+ return 0;
- return 0;
+ map_flash_registers(flash);
+
+ return 1;
}
uint8_t wait_lhf00l04(volatile uint8_t *bios)
{
-
uint8_t status;
uint8_t id1, id2;
*bios = 0x70;
if ((*bios & 0x80) == 0) { // it's busy
- while ((*bios & 0x80) == 0);
+ while ((*bios & 0x80) == 0) ;
}
status = *bios;
*bios = 0x90;
myusec_delay(10);
- id1 = *(volatile uint8_t *) bios;
- id2 = *(volatile uint8_t *) (bios + 0x01);
+ id1 = *(volatile uint8_t *)bios;
+ id2 = *(volatile uint8_t *)(bios + 0x01);
// this is needed to jam it out of "read id" mode
- *(volatile uint8_t *) (bios + 0x5555) = 0xAA;
- *(volatile uint8_t *) (bios + 0x2AAA) = 0x55;
- *(volatile uint8_t *) (bios + 0x5555) = 0xF0;
- return status;
+ *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
+ *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
+ *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
+ return status;
}
+
int erase_lhf00l04_block(struct flashchip *flash, int offset)
{
- volatile uint8_t *bios = flash->virt_addr + offset;
- volatile uint8_t *wrprotect =
- flash->virt_addr_2 + offset + 2;
+ volatile uint8_t *bios = flash->virtual_memory + offset;
+ volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
uint8_t status;
// clear status register
*bios = 0x50;
printf("Erase at %p\n", bios);
- status = wait_lhf00l04(flash->virt_addr);
+ status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
// clear write protect
printf("write protect is at %p\n", (wrprotect));
printf("write protect is 0x%x\n", *(wrprotect));
// now start it
- *(volatile uint8_t *) (bios) = 0x20;
- *(volatile uint8_t *) (bios) = 0xd0;
+ *(volatile uint8_t *)(bios) = 0x20;
+ *(volatile uint8_t *)(bios) = 0xd0;
myusec_delay(10);
// now let's see what the register is
- status = wait_lhf00l04(flash->virt_addr);
+ status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
printf("DONE BLOCK 0x%x\n", offset);
- return (0);
+
+ return 0;
}
+
int erase_lhf00l04(struct flashchip *flash)
{
int i;
for (i = 0; i < total_size; i += flash->page_size)
erase_lhf00l04_block(flash, i);
printf("DONE ERASE\n");
- return (0);
+
+ return 0;
}
-void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst,
- int page_size)
+void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src,
+ volatile uint8_t *dst, int page_size)
{
int i;
*dst++ = *src++;
wait_lhf00l04(bios);
}
-
}
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;
+ int total_size = flash->total_size * 1024;
+ int page_size = flash->page_size;
+ volatile uint8_t *bios = flash->virtual_memory;
erase_lhf00l04(flash);
if (*bios != 0xff) {
- printf("ERASE FAILED\n");
+ printf("ERASE FAILED!\n");
return -1;
}
- printf("Programming Page: ");
+ printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
printf("%04d at address: 0x%08x", i, i * page_size);
write_page_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");
+ 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);
+ protect_jedec(bios);
+
+ return 0;
}
projects / coreboot.git / blobdiff