14 Oct
2008
14 Oct
'08
6:22 p.m.
More could be done to open up a larger ROM area etc but this will inform you of a major problem.
Marc
--
Marc Jones
Senior Firmware Engineer
(970) 226-9684 Office
mailto:Marc.Jones@amd.com
http://www.amd.com/embeddedprocessors
SB600 has four write once LPC ROM protect areas. It is not possible to write enable that area once the register is set so print a warning.
Signed-off-by: Marc Jones marcj.jones@amd.com
Index: chipset_enable.c
===================================================================
--- chipset_enable.c (revision 3658)
+++ chipset_enable.c (working copy)
@@ -571,6 +571,24 @@
return 0;
}
+static int enable_flash_sb600(struct pci_dev *dev, const char *name)
+{
+ uint32_t val;
+ uint8_t reg;
+
+ /* Clear ROM Protect 0-3 */
+ for (reg = 0x50; reg < 0x60; reg+=4) {
+ val = pci_read_long(dev, reg);
+ if (val & 0x03) {
+ printf("\nLPC ROM Protect 0x%x is set to 0x%x on %s.\n You will not be able to flash that location. (WARNING ONLY)\n", reg, val, name);
+ }
+ }
+
+ return 0;
+
+
+}
+
static int enable_flash_ck804(struct pci_dev *dev, const char *name)
{
uint8_t old, new;
@@ -744,6 +762,7 @@
{0x1039, 0x0008, "SiS5595", enable_flash_sis5595},
{0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536},
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
+ {0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600},
{0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */