c48822ae91
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1813 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
306 lines
6.7 KiB
C
306 lines
6.7 KiB
C
#include <sys/io.h>
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#include <stdio.h>
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#include <pci/pci.h>
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#include <stdlib.h>
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static int enable_flash_sis630(struct pci_dev *dev, char *name)
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{
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char b;
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/* get io privilege access PCI configuration space */
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if (iopl(3) != 0) {
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perror("Can not set io priviliage");
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exit(1);
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}
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/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
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outl(0x80000840, 0x0cf8);
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b = inb(0x0cfc) | 0x0b;
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outb(b, 0xcfc);
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/* Flash write enable on SiS 540/630 */
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outl(0x80000845, 0x0cf8);
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b = inb(0x0cfd) | 0x40;
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outb(b, 0xcfd);
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/* The same thing on SiS 950 SuperIO side */
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outb(0x87, 0x2e);
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outb(0x01, 0x2e);
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outb(0x55, 0x2e);
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outb(0x55, 0x2e);
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if (inb(0x2f) != 0x87) {
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outb(0x87, 0x4e);
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outb(0x01, 0x4e);
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outb(0x55, 0x4e);
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outb(0xaa, 0x4e);
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if (inb(0x4f) != 0x87) {
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printf("Can not access SiS 950\n");
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return -1;
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}
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outb(0x24, 0x4e);
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b = inb(0x4f) | 0xfc;
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outb(0x24, 0x4e);
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outb(b, 0x4f);
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outb(0x02, 0x4e);
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outb(0x02, 0x4f);
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}
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outb(0x24, 0x2e);
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printf("2f is %#x\n", inb(0x2f));
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b = inb(0x2f) | 0xfc;
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outb(0x24, 0x2e);
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outb(b, 0x2f);
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outb(0x02, 0x2e);
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outb(0x02, 0x2f);
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return 0;
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}
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static int enable_flash_e7500(struct pci_dev *dev, char *name)
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{
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/* register 4e.b gets or'ed with one */
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unsigned char old, new;
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/* if it fails, it fails. There are so many variations of broken mobos
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* that it is hard to argue that we should quit at this point.
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*/
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old = pci_read_byte(dev, 0x4e);
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new = old | 1;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x4e, new);
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if (pci_read_byte(dev, 0x4e) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x4e, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_ich4(struct pci_dev *dev, char *name)
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{
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/* register 4e.b gets or'ed with one */
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unsigned char old, new;
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/* if it fails, it fails. There are so many variations of broken mobos
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* that it is hard to argue that we should quit at this point.
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*/
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old = pci_read_byte(dev, 0x4e);
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new = old | 1;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x4e, new);
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if (pci_read_byte(dev, 0x4e) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x4e, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_vt8235(struct pci_dev *dev, char *name)
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{
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unsigned char old, new, val;
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unsigned int base;
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int ok;
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/* get io privilege access PCI configuration space */
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if (iopl(3) != 0) {
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perror("Can not set io priviliage");
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exit(1);
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}
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old = pci_read_byte(dev, 0x40);
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new = old | 0x10;
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if (new == old)
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return 0;
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ok = pci_write_byte(dev, 0x40, new);
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if (ok != 0) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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old, new, name);
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}
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/* enable GPIO15 which is connected to write protect. */
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base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
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val = inb(base + 0x4d);
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val |= 0x80;
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outb(val, base + 0x4d);
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if (ok != 0) {
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return -1;
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} else {
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return 0;
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}
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}
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static int enable_flash_vt8231(struct pci_dev *dev, char *name)
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{
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unsigned char val;
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val = pci_read_byte(dev, 0x40);
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val |= 0x10;
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pci_write_byte(dev, 0x40, val);
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if (pci_read_byte(dev, 0x40) != val) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x40, val, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_cs5530(struct pci_dev *dev, char *name)
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{
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unsigned char new;
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pci_write_byte(dev, 0x52, 0xee);
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new = pci_read_byte(dev, 0x52);
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if (new != 0xee) {
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printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x52, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_sc1100(struct pci_dev *dev, char *name)
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{
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unsigned char new;
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pci_write_byte(dev, 0x52, 0xee);
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new = pci_read_byte(dev, 0x52);
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if (new != 0xee) {
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printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x52, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_sis5595(struct pci_dev *dev, char *name)
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{
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unsigned char new, newer;
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new = pci_read_byte(dev, 0x45);
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/* clear bit 5 */
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new &= (~0x20);
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/* set bit 2 */
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new |= 0x4;
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pci_write_byte(dev, 0x45, new);
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newer = pci_read_byte(dev, 0x45);
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if (newer != new) {
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printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x45, new, name);
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printf("Stuck at 0x%x\n", newer);
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return -1;
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}
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return 0;
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}
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static int enable_flash_amd8111(struct pci_dev *dev, char *name)
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{
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/* register 4e.b gets or'ed with one */
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unsigned char old, new;
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/* if it fails, it fails. There are so many variations of broken mobos
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* that it is hard to argue that we should quit at this point.
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*/
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/* enable decoding at 0xffb00000 to 0xffffffff */
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old = pci_read_byte(dev, 0x43);
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new = old | 0xC0;
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if (new != old) {
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pci_write_byte(dev, 0x43, new);
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if (pci_read_byte(dev, 0x43) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x43, new, name);
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}
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}
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old = pci_read_byte(dev, 0x40);
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new = old | 0x01;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x40, new);
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if (pci_read_byte(dev, 0x40) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x40, new, name);
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return -1;
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}
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return 0;
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}
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typedef struct penable {
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unsigned short vendor, device;
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char *name;
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int (*doit) (struct pci_dev * dev, char *name);
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} FLASH_ENABLE;
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static FLASH_ENABLE enables[] = {
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{0x1039, 0x0630, "sis630", enable_flash_sis630},
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{0x8086, 0x2480, "E7500", enable_flash_e7500},
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{0x8086, 0x24c0, "ICH4", enable_flash_ich4},
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{0x1106, 0x8231, "VT8231", enable_flash_vt8231},
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{0x1106, 0x3177, "VT8235", enable_flash_vt8235},
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{0x1078, 0x0100, "CS5530", enable_flash_cs5530},
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{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
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{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
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{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
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};
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int enable_flash_write()
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{
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int i;
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struct pci_access *pacc;
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struct pci_dev *dev = 0;
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FLASH_ENABLE *enable = 0;
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pacc = pci_alloc(); /* Get the pci_access structure */
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/* Set all options you want -- here we stick with the defaults */
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pci_init(pacc); /* Initialize the PCI library */
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pci_scan_bus(pacc); /* We want to get the list of devices */
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/* now let's try to find the chipset we have ... */
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for (i = 0; i < sizeof(enables) / sizeof(enables[0]) && (!dev);
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i++) {
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struct pci_filter f;
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struct pci_dev *z;
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/* the first param is unused. */
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pci_filter_init((struct pci_access *) 0, &f);
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f.vendor = enables[i].vendor;
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f.device = enables[i].device;
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for (z = pacc->devices; z; z = z->next)
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if (pci_filter_match(&f, z)) {
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enable = &enables[i];
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dev = z;
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}
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}
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/* now do the deed. */
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if (enable) {
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printf("Enabling flash write on %s...", enable->name);
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if (enable->doit(dev, enable->name) == 0)
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printf("OK\n");
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}
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return 0;
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}
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