diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0023-southbridge-amd-sb700-Add-CMOS-option-to-disable-leg.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0023-southbridge-amd-sb700-Add-CMOS-option-to-disable-leg.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0023-southbridge-amd-sb700-Add-CMOS-option-to-disable-leg.patch b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0023-southbridge-amd-sb700-Add-CMOS-option-to-disable-leg.patch new file mode 100644 index 0000000..1f41eaf --- /dev/null +++ b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0023-southbridge-amd-sb700-Add-CMOS-option-to-disable-leg.patch @@ -0,0 +1,53 @@ +From 01f84b46b749454f6c93c3273fac65be780a128b Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Tue, 24 Nov 2015 14:11:56 -0600 +Subject: [PATCH 23/45] southbridge/amd/sb700: Add CMOS option to disable + legacy USB support + +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/southbridge/amd/sb700/sm.c | 20 +++++++++++++++++--- + 1 file changed, 17 insertions(+), 3 deletions(-) + +diff --git a/src/southbridge/amd/sb700/sm.c b/src/southbridge/amd/sb700/sm.c +index 04f4601..942e4f8 100644 +--- a/src/southbridge/amd/sb700/sm.c ++++ b/src/southbridge/amd/sb700/sm.c +@@ -63,6 +63,7 @@ static void sm_init(device_t dev) + u32 dword; + void *ioapic_base; + uint32_t power_state; ++ uint32_t enable_legacy_usb; + u32 nmi_option; + + printk(BIOS_INFO, "sm_init().\n"); +@@ -72,10 +73,23 @@ static void sm_init(device_t dev) + ioapic_base = (void *)(pci_read_config32(dev, 0x74) & (0xffffffe0)); + setup_ioapic(ioapic_base, 0); /* Don't rename IOAPIC ID. */ + ++ enable_legacy_usb = 1; ++ get_option(&enable_legacy_usb, "enable_legacy_usb"); ++ + /* 2.10 Interrupt Routing/Filtering */ +- dword = pci_read_config8(dev, 0x62); +- dword |= 3; +- pci_write_config8(dev, 0x62, dword); ++ byte = pci_read_config8(dev, 0x62); ++ if (enable_legacy_usb) ++ byte |= 0x3; ++ else ++ byte &= ~0x3; ++ pci_write_config8(dev, 0x62, byte); ++ ++ byte = pci_read_config8(dev, 0x67); ++ if (enable_legacy_usb) ++ byte |= 0x1 << 7; ++ else ++ byte &= ~(0x1 << 7); ++ pci_write_config8(dev, 0x67, byte); + + /* Delay back to back interrupts to the CPU. */ + dword = pci_read_config16(dev, 0x64); +-- +2.1.4 + |