[coreboot-gerrit] Patch set updated for coreboot: southbridge/amd/sb700: Add missing DMA setup step from AMD RRG
Timothy Pearson (tpearson@raptorengineeringinc.com)
gerrit at coreboot.org
Tue Jan 26 21:47:27 CET 2016
Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13154
-gerrit
commit 0b40a4007ca50e687364dcc25cfc1159d551d9fb
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date: Tue Nov 24 14:11:56 2015 -0600
southbridge/amd/sb700: Add missing DMA setup step from AMD RRG
Change-Id: I412a0e5f2e0686b10a295dd7c0e9b537dc1a0940
Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
src/southbridge/amd/sb700/early_setup.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c
index 3733314..76855fb 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;
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