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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-11-24 14:11:56 -0600
committerMartin Roth <martinroth@google.com>2016-01-29 00:43:43 +0100
commit8274accde894af7fb2e44ee70662eb632beebaf9 (patch)
treef78eca1234019e3c7f4e0a8b039fc2bab6ef14b6
parent2ba84cd7ded80f6f4a17085ee4dd6af274ad3dde (diff)
downloadcoreboot-8274accde894af7fb2e44ee70662eb632beebaf9.tar.xz
southbridge/amd/sb700: Add missing DMA setup step from AMD RRG
Change-Id: I412a0e5f2e0686b10a295dd7c0e9b537dc1a0940 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: https://review.coreboot.org/13154 Tested-by: build bot (Jenkins) Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
-rw-r--r--src/southbridge/amd/sb700/early_setup.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c
index 3733314f07..76855fba34 100644
--- a/src/southbridge/amd/sb700/early_setup.c
+++ b/src/southbridge/amd/sb700/early_setup.c
@@ -420,6 +420,11 @@ static void sb700_devices_por_init(void)
/* Legacy DMA Prefetch Enhancement, CIM masked it. */
/* pci_write_config8(dev, 0x43, 0x1); */
+ /* Enable DMA verify bugfix */
+ byte = pci_read_config8(dev, 0x67);
+ byte |= 0x1 << 1;
+ pci_write_config8(dev, 0x67, byte);
+
/* Disabling Legacy USB Fast SMI# */
byte = pci_read_config8(dev, 0x62);
byte |= 0x24;