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#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_ich4(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.
*/
/* enable decoding at 0xffb00000 to 0xffffffff */
old = pci_read_byte(dev, 0x43);
new = old | 0xC0;
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;
}
//By yhlu
static int enable_flash_ck804(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, 0x88);
new = old | 0xc0;
if (new != old) {
pci_write_byte(dev, 0x88, new);
if (pci_read_byte(dev, 0x88) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x88, new, name);
}
}
old = pci_read_byte(dev, 0x6d);
new = old | 0x01;
if (new == old)
return 0;
pci_write_byte(dev, 0x6d, new);
if (pci_read_byte(dev, 0x6d) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x6d, 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},
{0x8086, 0x24c0, "ICH4", enable_flash_ich4},
{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},
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, // LPC
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, // Pro
{0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804}, // Slave, should not be here, to fix known bug for A01.
};
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;
}
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