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Diffstat (limited to 'src/mainboard/asus/m2v-mx_se')
-rw-r--r--src/mainboard/asus/m2v-mx_se/romstage.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/mainboard/asus/m2v-mx_se/romstage.c b/src/mainboard/asus/m2v-mx_se/romstage.c
index 580d8fa50a..9825e2bcfb 100644
--- a/src/mainboard/asus/m2v-mx_se/romstage.c
+++ b/src/mainboard/asus/m2v-mx_se/romstage.c
@@ -74,10 +74,15 @@ static inline int spd_read_byte(unsigned device, unsigned address)
#define SB_VFSMAF 0
-/* this function might fail on some K8 CPUs with errata #181 */
static void ldtstop_sb(void)
{
print_debug("toggle LDTSTP#\n");
+
+ /* fix errata #181, disable DRAM controller it will get enabled later */
+ u8 tmp = pci_read_config8(PCI_DEV(0, 0x18, 2), 0x94);
+ tmp |= (( 1 << 14) | (1 << 3));
+ pci_write_config8(PCI_DEV(0, 0x18, 2), 0x94, tmp);
+
u8 reg = inb (VT8237R_ACPI_IO_BASE + 0x5c);
reg = reg ^ (1 << 0);
outb(reg, VT8237R_ACPI_IO_BASE + 0x5c);