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authorMarc Jones <marcj.jones@amd.com>2008-10-15 17:50:29 +0000
committerMarc Jones <marc.jones@amd.com>2008-10-15 17:50:29 +0000
commit7528aa6de3cf67a5310d2cfb7e555c34de7dd20e (patch)
treeaa21b55754241812feb64be7d660ca356218532e /util
parentb0ae976eaf55c677f2500e7e80810383f219f6fc (diff)
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> 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> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3659 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util')
-rw-r--r--util/flashrom/chipset_enable.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/util/flashrom/chipset_enable.c b/util/flashrom/chipset_enable.c
index c6aa876b99..22c40dffb2 100644
--- a/util/flashrom/chipset_enable.c
+++ b/util/flashrom/chipset_enable.c
@@ -571,6 +571,26 @@ static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
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)
{
uint8_t old, new;
@@ -744,6 +764,7 @@ static const FLASH_ENABLE enables[] = {
{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 */