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SB600 has four write once LPC ROM protect areas

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It is not possible to write enable that area once the register is set so
print a warning.

Corresponding to flashrom svn r324 and coreboot v2 svn r3659.

Signed-off-by: Marc Jones <marcj.jones@amd.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Peter Stuge <peter@stuge.se>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Marc Jones 2008-10-15 17:50:29 +00:00
parent 28ec74b229
commit 3af487d419
1 changed files with 21 additions and 0 deletions
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21
chipset_enable.c
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@ -571,6 +571,26 @@ static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
return 0; return 0;
} }
static int enable_flash_sb600(struct pci_dev *dev, const char *name)
{
uint32_t old, new;
uint8_t reg;
/* Clear ROM Protect 0-3 */
for (reg = 0x50; reg < 0x60; reg+=4) {
old = pci_read_long(dev, reg);
new = old & 0xFFFFFFFC;
if (new != old) {
pci_write_byte(dev, reg, new);
if (pci_read_long(dev, reg) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x50, new, name);
}
}
}
return 0;
}
static int enable_flash_ck804(struct pci_dev *dev, const char *name) static int enable_flash_ck804(struct pci_dev *dev, const char *name)
{ {
uint8_t old, new; uint8_t old, new;
@ -744,6 +764,7 @@ static const FLASH_ENABLE enables[] = {
{0x1039, 0x0008, "SiS5595", enable_flash_sis5595}, {0x1039, 0x0008, "SiS5595", enable_flash_sis5595},
{0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536}, {0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536},
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111}, {0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
{0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600},
{0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533}, {0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */ {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */ {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */