mirror of
https://review.coreboot.org/flashrom.git
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Add support for ST M29F400BT - part 2
Corresponding to coreboot v1 svn r589.
This commit is contained in:
Ronald G. Minnich
parent
3c910ed807
commit
b193490201
180
m29f400bt.c
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180
m29f400bt.c
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/*
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* m29f400bt.c: driver for programming JEDEC standard flash parts
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*
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*
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* Copyright 2000 Silicon Integrated System Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* Reference:
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*
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* $Id$
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*/
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#include "flash.h"
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#include "m29f400bt.h"
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int probe_m29f400bt (struct flashchip * flash)
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{
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volatile char * bios = flash->virt_addr;
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unsigned char id1, id2;
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0x90;
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myusec_delay(10);
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id1 = *(volatile unsigned char *) bios;
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id2 = *(volatile unsigned char *) (bios + 0x02);
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0xF0;
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myusec_delay(10);
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printf(__FUNCTION__ " id1 %x, id2 %x\n", id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id)
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return 1;
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return 0;
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}
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int erase_m29f400bt (struct flashchip * flash)
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{
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volatile char * bios = flash->virt_addr;
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0x80;
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0x10;
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myusec_delay(10);
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toggle_ready_m29f400bt(bios);
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}
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int block_erase_m29f400bt (volatile char * bios ,volatile char * dst)
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{
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0x80;
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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//*(volatile char *) (bios + 0xAAA) = 0x10;
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*dst = 0x30;
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myusec_delay(10);
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toggle_ready_m29f400bt(bios);
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}
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int write_m29f400bt (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size *1024, page_size = flash->page_size;
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volatile char * bios = flash->virt_addr;
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//erase_m29f400bt (flash);
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printf ("Programming Page:\n ");
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/*********************************
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*Pages for M29F400BT:
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* 16 0x7c000 0x7ffff TOP
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* 8 0x7a000 0x7bfff
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* 8 0x78000 0x79fff
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* 32 0x70000 0x77fff
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* 64 0x60000 0x6ffff
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* 64 0x50000 0x5ffff
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* 64 0x40000 0x4ffff
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*---------------------------------
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* 64 0x30000 0x3ffff
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* 64 0x20000 0x2ffff
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* 64 0x10000 0x1ffff
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* 64 0x00000 0x0ffff BOTTOM
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*********************************/
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printf("total_size/page_size = %d\n",total_size/page_size);
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for (i = 0; i < (total_size/page_size)-1; i++) {
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printf("%04d at address: 0x%08x\n", i, i * page_size);
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block_erase_m29f400bt(bios, bios + i * page_size);
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write_page_m29f400bt(bios, buf + i * page_size, bios + i * page_size,
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page_size);
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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");
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}
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printf("%04d at address: 0x%08x\n",7,0x70000);
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block_erase_m29f400bt(bios , bios + 0x70000);
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write_page_m29f400bt(bios,buf + 0x70000, bios + 0x70000, 32*1024);
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printf("%04d at address: 0x%08x\n",8,0x78000);
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block_erase_m29f400bt(bios , bios + 0x78000);
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write_page_m29f400bt(bios,buf + 0x78000, bios + 0x78000, 8*1024);
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printf("%04d at address: 0x%08x\n",9,0x7a000);
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block_erase_m29f400bt(bios , bios + 0x7a000);
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write_page_m29f400bt(bios,buf + 0x7a000, bios + 0x7a000, 8*1024);
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printf("%04d at address: 0x%08x\n",10,0x7c000);
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block_erase_m29f400bt(bios , bios + 0x7c000);
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write_page_m29f400bt(bios,buf + 0x7c000, bios + 0x7c000, 16*1024);
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printf("\n");
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//protect_m29f400bt (bios);
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}
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int write_linuxbios_m29f400bt (struct flashchip * flash, char * buf)
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{
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int i;
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volatile char * bios = flash->virt_addr;
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printf ("Programming Page:\n ");
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/*********************************
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*Pages for M29F400BT:
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* 16 0x7c000 0x7ffff TOP
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* 8 0x7a000 0x7bfff
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* 8 0x78000 0x79fff
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* 32 0x70000 0x77fff
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* 64 0x60000 0x6ffff
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* 64 0x50000 0x5ffff
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* 64 0x40000 0x4ffff
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*---------------------------------
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* 64 0x30000 0x3ffff
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* 64 0x20000 0x2ffff
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* 64 0x10000 0x1ffff
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* 64 0x00000 0x0ffff BOTTOM
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*********************************/
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printf("%04d at address: 0x%08x\n",7,0x00000);
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block_erase_m29f400bt(bios , bios + 0x00000);
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write_page_m29f400bt(bios,buf + 0x00000, bios + 0x00000, 64*1024);
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printf("%04d at address: 0x%08x\n",7,0x10000);
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block_erase_m29f400bt(bios , bios + 0x10000);
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write_page_m29f400bt(bios,buf + 0x10000, bios + 0x10000, 64*1024);
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printf("%04d at address: 0x%08x\n",7,0x20000);
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block_erase_m29f400bt(bios , bios + 0x20000);
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write_page_m29f400bt(bios,buf + 0x20000, bios + 0x20000, 64*1024);
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printf("%04d at address: 0x%08x\n",7,0x30000);
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block_erase_m29f400bt(bios , bios + 0x30000);
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write_page_m29f400bt(bios,buf + 0x30000, bios + 0x30000, 64*1024);
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printf("\n");
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//protect_m29f400bt (bios);
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}
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67
m29f400bt.h
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67
m29f400bt.h
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extern int probe_m29f400bt (struct flashchip * flash);
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extern int erase_m29f400bt (struct flashchip * flash);
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extern int block_erase_m29f400bt (volatile char * bios, volatile char * dst);
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extern int write_m29f400bt (struct flashchip * flash, char * buf);
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extern int write_linuxbios_m29f400bt (struct flashchip * flash, char * buf);
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extern __inline__ void toggle_ready_m29f400bt (volatile char * dst)
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{
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unsigned int i = 0;
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char tmp1, tmp2;
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tmp1 = *dst & 0x40;
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while (i++ < 0xFFFFFF) {
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tmp2 = *dst & 0x40;
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if (tmp1 == tmp2) {
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break;
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}
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tmp1 = tmp2;
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}
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}
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extern __inline__ void data_polling_m29f400bt (volatile char * dst, char data)
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{
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unsigned int i = 0;
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char tmp;
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data &= 0x80;
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while (i++ < 0xFFFFFF) {
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tmp = *dst & 0x80;
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if (tmp == data) {
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break;
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}
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}
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}
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extern __inline__ void protect_m29f400bt (volatile char * bios)
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{
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0xA0;
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usleep(200);
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}
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extern __inline__ void write_page_m29f400bt (volatile char * bios, char * src, volatile char * dst,
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int page_size)
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{
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int i;
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for (i = 0; i < page_size; i++) {
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*(volatile char *) (bios + 0xAAA) = 0xAA;
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*(volatile char *) (bios + 0x555) = 0x55;
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*(volatile char *) (bios + 0xAAA) = 0xA0;
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/* transfer data from source to destination */
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*dst = *src;
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//*(volatile char *) (bios) = 0xF0;
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//usleep(5);
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toggle_ready_m29f400bt(dst);
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printf("Value in the flash at address %p = %#x, want %#x\n",dst-bios, *dst, *src);
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dst++;
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src++;
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}
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}
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