diff options
Diffstat (limited to '82802ab.c')
| -rw-r--r-- | 82802ab.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/82802ab.c b/82802ab.c deleted file mode 100644 index 38a5ce2..0000000 --- a/82802ab.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * This file is part of the flashrom project. - * - * Copyright (C) 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/* - * Datasheet: - * - Name: Intel 82802AB/82802AC Firmware Hub (FWH) - * - URL: http://www.intel.com/design/chipsets/datashts/290658.htm - * - PDF: http://download.intel.com/design/chipsets/datashts/29065804.pdf - * - Order number: 290658-004 - */ - -#include <stdio.h> -#include <stdint.h> -#include "flash.h" - -// I need that Berkeley bit-map printer -void print_82802ab_status(uint8_t status) -{ - printf("%s", status & 0x80 ? "Ready:" : "Busy:"); - printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:"); - printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:"); - printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:"); - printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:"); - printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:"); - printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:"); -} - -int probe_82802ab(struct flashchip *flash) -{ - 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; -#endif - - *bios = 0xff; - myusec_delay(10); - *bios = 0x90; - myusec_delay(10); - - id1 = *(volatile uint8_t *)bios; - id2 = *(volatile uint8_t *)(bios + 0x01); - - /* Leave ID mode */ - *(volatile uint8_t *)(bios + 0x5555) = 0xAA; - *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; - *(volatile uint8_t *)(bios + 0x5555) = 0xF0; - - 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) - return 0; - - map_flash_registers(flash); - - return 1; -} - -uint8_t wait_82802ab(volatile uint8_t *bios) -{ - uint8_t status; - uint8_t id1, id2; - - *bios = 0x70; - if ((*bios & 0x80) == 0) { // it's busy - while ((*bios & 0x80) == 0) ; - } - - status = *bios; - - // put another command to get out of status register mode - - *bios = 0x90; - myusec_delay(10); - - 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; -} - -int erase_82802ab_block(struct flashchip *flash, int offset) -{ - 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); - // clear write protect - //printf("write protect is at %p\n", (wrprotect)); - //printf("write protect is 0x%x\n", *(wrprotect)); - *(wrprotect) = 0; - //printf("write protect is 0x%x\n", *(wrprotect)); - - // now start it - *(volatile uint8_t *)(bios) = 0x20; - *(volatile uint8_t *)(bios) = 0xd0; - myusec_delay(10); - // now let's see what the register is - status = wait_82802ab(flash->virtual_memory); - //print_82802ab_status(status); - printf("DONE BLOCK 0x%x\n", offset); - - return 0; -} - -int erase_82802ab(struct flashchip *flash) -{ - int i; - unsigned int total_size = flash->total_size * 1024; - - printf("total_size is %d; flash->page_size is %d\n", - total_size, flash->page_size); - for (i = 0; i < total_size; i += flash->page_size) - erase_82802ab_block(flash, i); - printf("DONE ERASE\n"); - - return 0; -} - -void write_page_82802ab(volatile uint8_t *bios, uint8_t *src, - volatile uint8_t *dst, int page_size) -{ - int i; - - for (i = 0; i < page_size; i++) { - /* transfer data from source to destination */ - *dst = 0x40; - *dst++ = *src++; - wait_82802ab(bios); - } -} - -int write_82802ab(struct flashchip *flash, uint8_t *buf) -{ - int i; - int total_size = flash->total_size * 1024; - int page_size = flash->page_size; - volatile uint8_t *bios = flash->virtual_memory; - - erase_82802ab(flash); - if (*bios != 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_82802ab(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; -} |
