diff options
Diffstat (limited to 'util/flash_and_burn/jedec.c')
| -rw-r--r-- | util/flash_and_burn/jedec.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/util/flash_and_burn/jedec.c b/util/flash_and_burn/jedec.c deleted file mode 100644 index 353b17ab98..0000000000 --- a/util/flash_and_burn/jedec.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * 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 <stdio.h> -#include "flash.h" -#include "jedec.h" - -int probe_jedec(struct flashchip *flash) -{ - volatile unsigned char *bios = flash->virt_addr; - unsigned char id1, id2; - - /* Issue JEDEC Product ID Entry command */ - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 0x90; - myusec_delay(10); - - /* Read product ID */ - id1 = *(volatile unsigned char *) bios; - id2 = *(volatile unsigned char *) (bios + 0x01); - - /* Issue JEDEC Product ID Exit command */ - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 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_sector_jedec(volatile unsigned char *bios, unsigned int page) -{ - /* Issue the Sector Erase command */ - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 0x80; - myusec_delay(10); - - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + page) = 0x30; - myusec_delay(10); - - /* wait for Toggle bit ready */ - toggle_ready_jedec(bios); - - return (0); -} - -int erase_block_jedec(volatile unsigned char *bios, unsigned int block) -{ - /* Issue the Sector Erase command */ - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 0x80; - myusec_delay(10); - - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + block) = 0x50; - myusec_delay(10); - - /* wait for Toggle bit ready */ - toggle_ready_jedec(bios); - - return (0); -} - -int erase_chip_jedec(struct flashchip *flash) -{ - volatile unsigned char *bios = flash->virt_addr; - - /* Issue the JEDEC Chip Erase command */ - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 0x80; - myusec_delay(10); - - *(volatile char *) (bios + 0x5555) = 0xAA; - myusec_delay(10); - *(volatile char *) (bios + 0x2AAA) = 0x55; - myusec_delay(10); - *(volatile char *) (bios + 0x5555) = 0x10; - myusec_delay(10); - - toggle_ready_jedec(bios); - - return (0); -} - -int write_page_write_jedec(volatile unsigned char *bios, unsigned char *src, - volatile unsigned char *dst, int page_size) -{ - int i; - - /* Issue JEDEC Data Unprotect comand */ - *(volatile unsigned char *) (bios + 0x5555) = 0xAA; - *(volatile unsigned char *) (bios + 0x2AAA) = 0x55; - *(volatile unsigned char *) (bios + 0x5555) = 0xA0; - - /* transfer data from source to destination */ - for (i = 0; i < page_size; i++) { - /* If the data is 0xFF, don't program it */ - if (*src == 0xFF) - continue; - *dst++ = *src++; - } - - toggle_ready_jedec(dst - 1); - - return 0; -} - -int write_byte_program_jedec(volatile unsigned char *bios, unsigned char *src, - volatile unsigned char *dst) -{ - int tried = 0; - - /* If the data is 0xFF, don't program it */ - if (*src == 0xFF) { - return 0; - } - -retry: - /* Issue JEDEC Byte Program command */ - *(volatile unsigned char *) (bios + 0x5555) = 0xAA; - *(volatile unsigned char *) (bios + 0x2AAA) = 0x55; - *(volatile unsigned char *) (bios + 0x5555) = 0xA0; - - /* transfer data from source to destination */ - *dst = *src; - toggle_ready_jedec(bios); - - if (*dst != *src && tried++ < 0x10) { - goto retry; - } - - return 0; -} - -int write_sector_jedec(volatile unsigned char *bios, unsigned char *src, - volatile unsigned char *dst, unsigned int page_size) -{ - int i; - - for (i = 0; i < page_size; i++) { - write_byte_program_jedec(bios, src, dst); - dst++, src++; - } - - return (0); -} - -int write_jedec(struct flashchip *flash, unsigned char *buf) -{ - int i; - int total_size = flash->total_size * 1024; - int page_size = flash->page_size; - volatile unsigned char *bios = flash->virt_addr; - - erase_chip_jedec(flash); - if (*bios != (unsigned char) 0xff) { - printf("ERASE FAILED\n"); - return -1; - } - printf("Programming Page: "); - for (i = 0; i < total_size / page_size; i++) { - printf("%04d at address: 0x%08x", i, i * page_size); - write_page_write_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); - - return (0); -} |