diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0022-southbridge-amd-sb700-Add-missing-DMA-setup-step-fro.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0022-southbridge-amd-sb700-Add-missing-DMA-setup-step-fro.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0022-southbridge-amd-sb700-Add-missing-DMA-setup-step-fro.patch b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0022-southbridge-amd-sb700-Add-missing-DMA-setup-step-fro.patch new file mode 100644 index 0000000..596cab9 --- /dev/null +++ b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0022-southbridge-amd-sb700-Add-missing-DMA-setup-step-fro.patch @@ -0,0 +1,30 @@ +From c104a49921424687b0aacea660582ea3c027024a Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Tue, 24 Nov 2015 14:11:56 -0600 +Subject: [PATCH 22/45] southbridge/amd/sb700: Add missing DMA setup step from + AMD RRG + +Signed-off-by: Timothy Pearson <tpearson@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 06c6c77..544447e 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; +-- +2.1.4 + |