6a61d6a4ae
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1693 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/*
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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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* yhlu yhlu@tyan.com add exclude range
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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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static __inline__ int erase_block_49fl004(volatile unsigned char *bios,
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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 0x50 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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extern int exclude_start_page, exclude_end_page;
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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 =
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flash->page_size;
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volatile char *bios = flash->virt_addr;
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printf("Programming Page: ");
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for (i = 0; i < total_size / page_size; i++) {
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if( (i>=exclude_start_page) && (i<exclude_end_page))
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continue;
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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_sector_jedec(bios, buf + i * page_size,
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bios + i * page_size, 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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return (0);
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}
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