Dammit
Corresponding to coreboot v1 svn r491.
diff --git a/flash_rom.c b/flash_rom.c
new file mode 100644
index 0000000..12aa273
--- /dev/null
+++ b/flash_rom.c
@@ -0,0 +1,196 @@
+/*
+ * flash_rom.c: Flash programming utility for SiS 630/950 M/Bs
+ *
+ *
+ * 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.
+ *
+ *
+ * Reference:
+ * 1. SiS 630 Specification
+ * 2. SiS 950 Specification
+ *
+ * $Id$
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/io.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "flash.h"
+#include "jedec.h"
+
+struct flashchip flashchips[] = {
+ {"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64*1024,
+ probe_29f040b, erase_29f040b, write_29f040b},
+ {"At29C040A", ATMEL_ID, AT_29C040A, NULL, 512, 256,
+ probe_jedec, erase_jedec, write_jedec},
+ {"Mx29f002", MX_ID, MX_29F002, NULL, 256, 64*1024,
+ probe_29f002, erase_29f002, write_29f002},
+ {"SST29EE020A", SST_ID, SST_29EE020A, NULL, 256, 128,
+ probe_jedec, erase_jedec, write_jedec},
+ {"SST28SF040A", SST_ID, SST_28SF040, NULL, 512, 256,
+ probe_28sf040, erase_28sf040, write_28sf040},
+ {"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128,
+ probe_jedec, erase_jedec, write_jedec},
+ {NULL,}
+};
+
+int enable_flash_sis630 (void)
+{
+ char b;
+
+ /* get io privilege access PCI configuration space */
+ if (iopl(3) != 0) {
+ perror("Can not set io priviliage");
+ exit(1);
+ }
+
+ /* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
+ outl(0x80000840, 0x0cf8);
+ b = inb(0x0cfc) | 0x0b;
+ outb(b, 0xcfc);
+ /* Flash write enable on SiS 540/630 */
+ outl(0x80000845, 0x0cf8);
+ b = inb(0x0cfd) | 0x40;
+ outb(b, 0xcfd);
+
+ /* The same thing on SiS 950 SuperIO side */
+ outb(0x87, 0x2e);
+ outb(0x01, 0x2e);
+ outb(0x55, 0x2e);
+ outb(0x55, 0x2e);
+
+ if (inb(0x2f) != 0x87) {
+ outb(0x87, 0x4e);
+ outb(0x01, 0x4e);
+ outb(0x55, 0x4e);
+ outb(0xaa, 0x4e);
+ if (inb(0x4f) != 0x87) {
+ printf("Can not access SiS 950\n");
+ return -1;
+ }
+ outb(0x24, 0x4e);
+ b = inb(0x4f) | 0xfc;
+ outb(0x24, 0x4e);
+ outb(b, 0x4f);
+ outb(0x02, 0x4e);
+ outb(0x02, 0x4f);
+ }
+
+ outb(0x24, 0x2e);
+ printf("2f is %#x\n", inb(0x2f));
+ b = inb(0x2f) | 0xfc;
+ outb(0x24, 0x2e);
+ outb(b, 0x2f);
+
+ outb(0x02, 0x2e);
+ outb(0x02, 0x2f);
+
+ return 0;
+}
+
+struct flashchip * probe_flash(struct flashchip * flash)
+{
+ int fd_mem;
+ char * bios;
+ unsigned long size;
+
+ if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
+ perror("Can not open /dev/mem");
+ exit(1);
+ }
+
+ while (flash->name != NULL) {
+ size = flash->total_size * 1024;
+ bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+ fd_mem, (off_t) (0 - size));
+ if (bios == MAP_FAILED) {
+ perror("Error MMAP /dev/mem");
+ exit(1);
+ }
+ flash->virt_addr = bios;
+
+ if (flash->probe(flash) == 1) {
+ printf ("%s found at physical address: 0x%lx\n",
+ flash->name, (0 - size), bios);
+ return flash;
+ }
+ munmap (bios, size);
+ flash++;
+ }
+ return NULL;
+}
+
+int verify_flash (struct flashchip * flash, char * buf)
+{
+ int i = 0;
+ int total_size = flash->total_size *1024;
+ char * bios = flash->virt_addr;
+
+ printf("Verifying address: ");
+ while (i++ < total_size) {
+ printf("0x%08x", i);
+ if (*(bios+i) != *(buf+i)) {
+ return 0;
+ }
+ printf("\b\b\b\b\b\b\b\b\b\b");
+ }
+ printf("\n");
+ return 1;
+}
+
+main (int argc, char * argv[])
+{
+ char * buf;
+ unsigned long size;
+ FILE * image;
+ struct flashchip * flash;
+
+ if (argc > 2){
+ printf("usage: %s [romimage]\n", argv[0]);
+ printf(" If no romimage is specified, then all that happens\n");
+ printf(" is that flash writes are enabled (useful for DoC)\n");
+ exit(1);
+ }
+
+ enable_flash_sis630 ();
+
+ if ((flash = probe_flash (flashchips)) == NULL) {
+ printf("EEPROM not found\n");
+ exit(1);
+ }
+
+ if (argc < 2){
+ printf("OK, only ENABLING flash write, but NOT FLASHING\n");
+ exit(0);
+ }
+ size = flash->total_size * 1024;
+
+ if ((image = fopen (argv[1], "r")) == NULL) {
+ perror("Error opening image file");
+ exit(1);
+ }
+
+ buf = (char *) calloc (size, sizeof(char));
+ fread (buf, sizeof(char), size, image);
+
+ flash->write (flash, buf);
+ verify_flash (flash, buf);
+}