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/*
* adapted from the Intel FW hub stuff for 82802ax 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.
*
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include "flash.h"
#include "jedec.h"
#include "sst_fwhub.h"
// I need that Berkeley bit-map printer
void print_sst_fwhub_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:");
}
/* probe_jedec works fine for probing */
int probe_sst_fwhub(struct flashchip *flash)
{
volatile uint8_t *bios;
size_t size = flash->total_size * 1024;
if (probe_jedec(flash) == 0)
return 0;
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
flash->fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
if (bios == MAP_FAILED) {
// it's this part but we can't map it ...
perror("Error MMAP /dev/mem");
exit(1);
}
flash->virt_addr_2 = bios;
return 1;
}
int erase_sst_fwhub_block(struct flashchip *flash, int offset)
{
volatile uint8_t *wrprotect = flash->virt_addr_2 + offset + 2;
// clear write protect
*(wrprotect) = 0;
erase_block_jedec(flash->virt_addr, offset);
toggle_ready_jedec(flash->virt_addr);
return (0);
}
int erase_sst_fwhub(struct flashchip *flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
for (i = 0; i < total_size; i += flash->page_size)
erase_sst_fwhub_block(flash, i);
return (0);
}
int write_sst_fwhub(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->virt_addr;
// FIXME: We want block wide erase instead of ironing the whole chip
erase_sst_fwhub(flash);
// dumb check if erase was successful.
for (i = 0; i < total_size; i++) {
if (bios[i] != 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_sector_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");
return (0);
}
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