279 lines
6.1 KiB
C
279 lines
6.1 KiB
C
#include <sys/io.h>
|
|
#include <stdio.h>
|
|
#include <pci/pci.h>
|
|
#include <stdlib.h>
|
|
|
|
static int enable_flash_sis630 (struct pci_dev *dev, char *name)
|
|
{
|
|
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;
|
|
}
|
|
|
|
static int enable_flash_e7500(struct pci_dev *dev, char *name)
|
|
{
|
|
/* register 4e.b gets or'ed with one */
|
|
unsigned char old, new;
|
|
/* if it fails, it fails. There are so many variations of broken mobos
|
|
* that it is hard to argue that we should quit at this point.
|
|
*/
|
|
|
|
old = pci_read_byte(dev, 0x4e);
|
|
|
|
new = old | 1;
|
|
|
|
if (new == old)
|
|
return 0;
|
|
|
|
pci_write_byte(dev, 0x4e, new);
|
|
|
|
if (pci_read_byte(dev, 0x4e) != new) {
|
|
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x4e, new, name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int enable_flash_vt8235(struct pci_dev *dev, char *name)
|
|
{
|
|
unsigned char old, new, val;
|
|
unsigned int base;
|
|
int ok;
|
|
|
|
/* get io privilege access PCI configuration space */
|
|
if (iopl(3) != 0) {
|
|
perror("Can not set io priviliage");
|
|
exit(1);
|
|
}
|
|
|
|
old = pci_read_byte(dev, 0x40);
|
|
|
|
new = old | 0x10;
|
|
|
|
if (new == old)
|
|
return 0;
|
|
|
|
ok = pci_write_byte(dev, 0x40, new);
|
|
if (ok != 0) {
|
|
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
old, new, name);
|
|
}
|
|
|
|
/* enable GPIO15 which is connected to write protect. */
|
|
base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
|
|
val = inb(base + 0x4d);
|
|
val |= 0x80;
|
|
outb(val, base + 0x4d);
|
|
|
|
if (ok != 0) {
|
|
return -1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int enable_flash_vt8231(struct pci_dev *dev, char *name)
|
|
{
|
|
unsigned char val;
|
|
|
|
val = pci_read_byte(dev, 0x40);
|
|
val |= 0x10;
|
|
pci_write_byte(dev, 0x40, val);
|
|
|
|
if (pci_read_byte(dev, 0x40) != val) {
|
|
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x40, val, name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int enable_flash_cs5530(struct pci_dev *dev, char *name)
|
|
{
|
|
unsigned char new;
|
|
|
|
pci_write_byte(dev, 0x52, 0xee);
|
|
|
|
new = pci_read_byte(dev, 0x52);
|
|
|
|
if (new != 0xee) {
|
|
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x52, new, name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int enable_flash_sc1100(struct pci_dev *dev, char *name)
|
|
{
|
|
unsigned char new;
|
|
|
|
pci_write_byte(dev, 0x52, 0xee);
|
|
|
|
new = pci_read_byte(dev, 0x52);
|
|
|
|
if (new != 0xee) {
|
|
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x52, new, name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int enable_flash_sis5595(struct pci_dev *dev, char *name)
|
|
{
|
|
unsigned char new, newer;
|
|
|
|
new = pci_read_byte(dev, 0x45);
|
|
|
|
/* clear bit 5 */
|
|
new &= (~ 0x20);
|
|
/* set bit 2 */
|
|
new |= 0x4;
|
|
|
|
pci_write_byte(dev, 0x45, new);
|
|
|
|
newer = pci_read_byte(dev, 0x45);
|
|
if (newer != new) {
|
|
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x45, new, name);
|
|
printf("Stuck at 0x%x\n", newer);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int enable_flash_amd8111(struct pci_dev *dev, char *name) {
|
|
/* register 4e.b gets or'ed with one */
|
|
unsigned char old, new;
|
|
/* if it fails, it fails. There are so many variations of broken mobos
|
|
* that it is hard to argue that we should quit at this point.
|
|
*/
|
|
|
|
//dump_pci_device(dev);
|
|
|
|
old = pci_read_byte(dev, 0x43);
|
|
new = old | 0x80;
|
|
if (new != old) {
|
|
pci_write_byte(dev, 0x43, new);
|
|
if (pci_read_byte(dev, 0x43) != new) {
|
|
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x43, new, name);
|
|
}
|
|
}
|
|
|
|
old = pci_read_byte(dev, 0x40);
|
|
new = old | 0x01;
|
|
if (new == old)
|
|
return 0;
|
|
pci_write_byte(dev, 0x40, new);
|
|
|
|
if (pci_read_byte(dev, 0x40) != new) {
|
|
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
|
|
0x40, new, name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
typedef struct penable {
|
|
unsigned short vendor, device;
|
|
char *name;
|
|
int (*doit)(struct pci_dev *dev, char *name);
|
|
} FLASH_ENABLE;
|
|
|
|
static FLASH_ENABLE enables[] = {
|
|
{0x1039, 0x0630, "sis630", enable_flash_sis630},
|
|
{0x8086, 0x2480, "E7500", enable_flash_e7500},
|
|
{0x1106, 0x8231, "VT8231", enable_flash_vt8231},
|
|
{0x1106, 0x3177, "VT8235", enable_flash_vt8235},
|
|
{0x1078, 0x0100, "CS5530", enable_flash_cs5530},
|
|
{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
|
|
{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
|
|
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
|
|
};
|
|
|
|
int enable_flash_write()
|
|
{
|
|
int i;
|
|
struct pci_access *pacc;
|
|
struct pci_dev *dev = 0;
|
|
FLASH_ENABLE *enable = 0;
|
|
|
|
pacc = pci_alloc(); /* Get the pci_access structure */
|
|
/* Set all options you want -- here we stick with the defaults */
|
|
pci_init(pacc); /* Initialize the PCI library */
|
|
pci_scan_bus(pacc); /* We want to get the list of devices */
|
|
|
|
/* now let's try to find the chipset we have ... */
|
|
for (i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
|
|
struct pci_filter f;
|
|
struct pci_dev *z;
|
|
/* the first param is unused. */
|
|
pci_filter_init((struct pci_access *) 0, &f);
|
|
f.vendor = enables[i].vendor;
|
|
f.device = enables[i].device;
|
|
for (z=pacc->devices; z; z=z->next)
|
|
if (pci_filter_match(&f, z)) {
|
|
enable = &enables[i];
|
|
dev = z;
|
|
}
|
|
}
|
|
|
|
/* now do the deed. */
|
|
if (enable) {
|
|
printf("Enabling flash write on %s...", enable->name);
|
|
if (enable->doit(dev, enable->name) == 0)
|
|
printf("OK\n");
|
|
}
|
|
return 0;
|
|
}
|