mirror of
https://review.coreboot.org/flashrom.git
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Now we support 8111 and these parts
Corresponding to flashrom svn r3 and coreboot v2 svn r1375.
This commit is contained in:
Ronald G. Minnich
210
pm49fl004.c
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210
pm49fl004.c
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/*
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* pm49fl004.c: driver for Pm49FL004 flash models.
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*
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*
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* Copyright 2004 Tyan 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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*/
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#include <stdio.h>
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#include "flash.h"
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#include "jedec.h"
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#include "pm49fl004.h"
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#define AUTO_PGRM 0x10
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#define CHIP_ERASE 0x30
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#define RESET 0xFF
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#define READ_ID 0x90
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static __inline__ void protect_49fl004 (volatile char * bios)
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{
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/* ask compiler not to optimize this */
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volatile unsigned char tmp;
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tmp = *(volatile unsigned char *) (bios + 0x1823);
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tmp = *(volatile unsigned char *) (bios + 0x1820);
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tmp = *(volatile unsigned char *) (bios + 0x1822);
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tmp = *(volatile unsigned char *) (bios + 0x0418);
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tmp = *(volatile unsigned char *) (bios + 0x041B);
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tmp = *(volatile unsigned char *) (bios + 0x0419);
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tmp = *(volatile unsigned char *) (bios + 0x040A);
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}
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static __inline__ void unprotect_49fl004 (volatile char * bios)
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{
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/* ask compiler not to optimize this */
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volatile unsigned char tmp;
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tmp = *(volatile unsigned char *) (bios + 0x1823);
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tmp = *(volatile unsigned char *) (bios + 0x1820);
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tmp = *(volatile unsigned char *) (bios + 0x1822);
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tmp = *(volatile unsigned char *) (bios + 0x0418);
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tmp = *(volatile unsigned char *) (bios + 0x041B);
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tmp = *(volatile unsigned char *) (bios + 0x0419);
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tmp = *(volatile unsigned char *) (bios + 0x041A);
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}
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static __inline__ int erase_block_49fl004 ( volatile unsigned char * bios ,unsigned long address)
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{
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volatile unsigned char *Temp;
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0x80; /* write data 0x80 to the address */
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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myusec_delay(10);
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Temp = bios + address; /* set up address to be C000:5555h */
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*Temp = 0x50; /* write data 0x55 to the address */
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/* wait for Toggle bit ready */
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toggle_ready_jedec(bios);
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return(0);
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}
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static __inline__ int write_block_49fl004(volatile char * bios,
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unsigned char * src,
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volatile unsigned char * dst,
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unsigned int page_size)
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{
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int i;
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volatile char *Temp;
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for (i = 0; i < page_size; i++) {
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if (*dst != 0xff) {
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printf("FATAL: dst %p not erased (val 0x%x\n", dst, *dst);
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return(-1);
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}
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/* transfer data from source to destination */
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if (*src == 0xFF) {
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dst++, src++;
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/* If the data is 0xFF, don't program it */
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continue;
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}
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Temp = (bios + 0x5555);
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*Temp = 0xAA;
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Temp = bios + 0x2AAA;
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*Temp = 0x55;
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Temp = bios + 0x5555;
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*Temp = 0xA0;
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*dst = *src;
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toggle_ready_jedec(bios);
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if (*dst != *src)
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printf("BAD! dst 0x%lx val 0x%x src 0x%x\n",
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(unsigned long)dst, *dst, *src);
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dst++, src++;
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}
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return(0);
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}
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int probe_49fl004 (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 + 0x5555) = 0xAA;
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myusec_delay(10);
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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myusec_delay(10);
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*(volatile char *) (bios + 0x5555) = 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 + 0x01);
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xF0;
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myusec_delay(10);
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printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, 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_49fl004 (struct flashchip * flash)
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{
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volatile unsigned char * bios = flash->virt_addr;
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volatile unsigned char *Temp;
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0x80; /* write data 0x80 to the address */
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0xAA; /* write data 0xAA to the address */
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myusec_delay(10);
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Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
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*Temp = 0x55; /* write data 0x55 to the address */
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myusec_delay(10);
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Temp = bios + 0x5555; /* set up address to be C000:5555h */
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*Temp = 0x10; /* write data 0x10 to the address */
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/* wait for Toggle bit ready */
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toggle_ready_jedec(bios);
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return(0);
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}
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int write_49fl004 (struct flashchip * flash, unsigned 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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// unprotect_49fl004 (bios);
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// erase_49fl004(flash);
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printf ("Programming Page: ");
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for (i = 0; i < total_size/page_size; i++) {
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/* erase the page before programming */
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erase_block_49fl004(bios, i * page_size);
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/* write to the sector */
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printf ("%04d at address: 0x%08x", i, i * page_size);
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write_block_49fl004(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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fflush(stdout);
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}
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printf("\n");
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// protect_49fl004 (bios);
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return(0);
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}
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