diff options
Diffstat (limited to 'config/coreboot/default/patches/0034-nb-intel-haswell-make-IOMMU-a-runtime-option.patch')
| -rw-r--r-- | config/coreboot/default/patches/0034-nb-intel-haswell-make-IOMMU-a-runtime-option.patch | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0034-nb-intel-haswell-make-IOMMU-a-runtime-option.patch b/config/coreboot/default/patches/0034-nb-intel-haswell-make-IOMMU-a-runtime-option.patch new file mode 100644 index 00000000..ed6c0d65 --- /dev/null +++ b/config/coreboot/default/patches/0034-nb-intel-haswell-make-IOMMU-a-runtime-option.patch @@ -0,0 +1,292 @@ +From eef3e0d517bde40d4761a9af3c004801a89db887 Mon Sep 17 00:00:00 2001 +From: Leah Rowe <info@minifree.org> +Date: Sat, 2 Mar 2024 22:51:09 +0000 +Subject: [PATCH 34/39] nb/intel/haswell: make IOMMU a runtime option + +When I tested graphics cards on a coreboot port for Dell +OptiPlex 9020 SFF, I could not use a graphics card unless +I set iommu=off on the Linux cmdline. + +Coreboot's current behaviour is to check whether the CPU +has vt-d support and, if it does, initialise the IOMMU. + +This patch maintains the current behaviour by default, but +allows the user to turn *off* the IOMMU, even if vt-d is +supported by the host CPU. + +If iommu=Disable is specified, the check will not be +performed, and the IOMMU will be left disabled. This option +has been added to all current Haswell boards, though it is +recommended to leave the IOMMU turned on in most setups. + +Signed-off-by: Leah Rowe <info@minifree.org> +--- + src/mainboard/asrock/b85m_pro4/cmos.default | 1 + + src/mainboard/asrock/b85m_pro4/cmos.layout | 3 +++ + src/mainboard/asrock/h81m-hds/cmos.default | 1 + + src/mainboard/asrock/h81m-hds/cmos.layout | 6 ++++++ + src/mainboard/dell/optiplex_9020/cmos.default | 1 + + src/mainboard/dell/optiplex_9020/cmos.layout | 6 ++++++ + src/mainboard/google/beltino/cmos.layout | 5 +++++ + src/mainboard/google/slippy/cmos.layout | 5 +++++ + src/mainboard/intel/baskingridge/cmos.layout | 4 ++++ + src/mainboard/lenovo/haswell/cmos.default | 1 + + src/mainboard/lenovo/haswell/cmos.layout | 3 +++ + src/mainboard/supermicro/x10slm-f/cmos.default | 1 + + src/mainboard/supermicro/x10slm-f/cmos.layout | 6 ++++++ + src/northbridge/intel/haswell/early_init.c | 5 +++++ + 14 files changed, 48 insertions(+) + +diff --git a/src/mainboard/asrock/b85m_pro4/cmos.default b/src/mainboard/asrock/b85m_pro4/cmos.default +index 01bf20ad16..dfc8b80fb0 100644 +--- a/src/mainboard/asrock/b85m_pro4/cmos.default ++++ b/src/mainboard/asrock/b85m_pro4/cmos.default +@@ -4,3 +4,4 @@ boot_option=Fallback + debug_level=Debug + nmi=Enable + power_on_after_fail=Disable ++iommu=Enable +diff --git a/src/mainboard/asrock/b85m_pro4/cmos.layout b/src/mainboard/asrock/b85m_pro4/cmos.layout +index efdc333fc2..c9883ea71d 100644 +--- a/src/mainboard/asrock/b85m_pro4/cmos.layout ++++ b/src/mainboard/asrock/b85m_pro4/cmos.layout +@@ -11,6 +11,7 @@ + 395 4 e 4 debug_level + 408 1 e 1 nmi + 409 2 e 5 power_on_after_fail ++ 412 1 e 6 iommu + 984 16 h 0 check_sum + # ----------------------------------------------------------------- + +@@ -38,6 +39,8 @@ + 5 0 Disable + 5 1 Enable + 5 2 Keep ++ 6 0 Disable ++ 6 1 Enable + # ----------------------------------------------------------------- + + # ----------------------------------------------------------------- +diff --git a/src/mainboard/asrock/h81m-hds/cmos.default b/src/mainboard/asrock/h81m-hds/cmos.default +index 01bf20ad16..dfc8b80fb0 100644 +--- a/src/mainboard/asrock/h81m-hds/cmos.default ++++ b/src/mainboard/asrock/h81m-hds/cmos.default +@@ -4,3 +4,4 @@ boot_option=Fallback + debug_level=Debug + nmi=Enable + power_on_after_fail=Disable ++iommu=Enable +diff --git a/src/mainboard/asrock/h81m-hds/cmos.layout b/src/mainboard/asrock/h81m-hds/cmos.layout +index c9ba76c78f..95ee3d36fb 100644 +--- a/src/mainboard/asrock/h81m-hds/cmos.layout ++++ b/src/mainboard/asrock/h81m-hds/cmos.layout +@@ -21,6 +21,9 @@ entries + 408 1 e 1 nmi + 409 2 e 5 power_on_after_fail + ++# enable or disable iommu ++412 1 e 6 iommu ++ + # coreboot config options: check sums + 984 16 h 0 check_sum + +@@ -52,6 +55,9 @@ enumerations + 5 1 Enable + 5 2 Keep + ++6 0 Disable ++6 1 Enable ++ + # ----------------------------------------------------------------- + checksums + +diff --git a/src/mainboard/dell/optiplex_9020/cmos.default b/src/mainboard/dell/optiplex_9020/cmos.default +index 6c4a2a1be7..8000eea8c0 100644 +--- a/src/mainboard/dell/optiplex_9020/cmos.default ++++ b/src/mainboard/dell/optiplex_9020/cmos.default +@@ -4,3 +4,4 @@ debug_level=Debug + nmi=Disable + power_on_after_fail=Disable + fan_full_speed=Disable ++iommu=Enable +diff --git a/src/mainboard/dell/optiplex_9020/cmos.layout b/src/mainboard/dell/optiplex_9020/cmos.layout +index d10ad95b23..4a1496a878 100644 +--- a/src/mainboard/dell/optiplex_9020/cmos.layout ++++ b/src/mainboard/dell/optiplex_9020/cmos.layout +@@ -21,6 +21,9 @@ entries + 408 1 e 1 nmi + 409 2 e 5 power_on_after_fail + ++# turn iommu on or off ++411 1 e 6 iommu ++ + # coreboot config options: EC + 412 1 e 1 fan_full_speed + +@@ -55,6 +58,9 @@ enumerations + 5 1 Enable + 5 2 Keep + ++6 0 Disable ++6 1 Enable ++ + # ----------------------------------------------------------------- + checksums + +diff --git a/src/mainboard/google/beltino/cmos.layout b/src/mainboard/google/beltino/cmos.layout +index 78d44c1415..c143979ae1 100644 +--- a/src/mainboard/google/beltino/cmos.layout ++++ b/src/mainboard/google/beltino/cmos.layout +@@ -19,6 +19,9 @@ entries + 408 1 e 1 nmi + 409 2 e 7 power_on_after_fail + ++# enable or disable iommu ++412 1 e 8 iommu ++ + # coreboot config options: bootloader + #Used by ChromeOS: + 416 128 r 0 vbnv +@@ -47,6 +50,8 @@ enumerations + 7 0 Disable + 7 1 Enable + 7 2 Keep ++8 0 Disable ++8 1 Enable + # ----------------------------------------------------------------- + checksums + +diff --git a/src/mainboard/google/slippy/cmos.layout b/src/mainboard/google/slippy/cmos.layout +index 78d44c1415..c143979ae1 100644 +--- a/src/mainboard/google/slippy/cmos.layout ++++ b/src/mainboard/google/slippy/cmos.layout +@@ -19,6 +19,9 @@ entries + 408 1 e 1 nmi + 409 2 e 7 power_on_after_fail + ++# enable or disable iommu ++412 1 e 8 iommu ++ + # coreboot config options: bootloader + #Used by ChromeOS: + 416 128 r 0 vbnv +@@ -47,6 +50,8 @@ enumerations + 7 0 Disable + 7 1 Enable + 7 2 Keep ++8 0 Disable ++8 1 Enable + # ----------------------------------------------------------------- + checksums + +diff --git a/src/mainboard/intel/baskingridge/cmos.layout b/src/mainboard/intel/baskingridge/cmos.layout +index 78d44c1415..f2c602f541 100644 +--- a/src/mainboard/intel/baskingridge/cmos.layout ++++ b/src/mainboard/intel/baskingridge/cmos.layout +@@ -19,6 +19,8 @@ entries + 408 1 e 1 nmi + 409 2 e 7 power_on_after_fail + ++412 1 e 8 iommu ++ + # coreboot config options: bootloader + #Used by ChromeOS: + 416 128 r 0 vbnv +@@ -47,6 +49,8 @@ enumerations + 7 0 Disable + 7 1 Enable + 7 2 Keep ++8 0 Disable ++8 1 Enable + # ----------------------------------------------------------------- + checksums + +diff --git a/src/mainboard/lenovo/haswell/cmos.default b/src/mainboard/lenovo/haswell/cmos.default +index 08db97c5a9..cc6b363cd9 100644 +--- a/src/mainboard/lenovo/haswell/cmos.default ++++ b/src/mainboard/lenovo/haswell/cmos.default +@@ -14,3 +14,4 @@ trackpoint=Enable + backlight=Keyboard + enable_dual_graphics=Disable + usb_always_on=Disable ++iommu=Enable +diff --git a/src/mainboard/lenovo/haswell/cmos.layout b/src/mainboard/lenovo/haswell/cmos.layout +index 27915d3ab7..59df76b64c 100644 +--- a/src/mainboard/lenovo/haswell/cmos.layout ++++ b/src/mainboard/lenovo/haswell/cmos.layout +@@ -23,6 +23,7 @@ entries + + # coreboot config options: EC + 411 1 e 8 first_battery ++413 1 e 14 iommu + 415 1 e 1 wlan + 416 1 e 1 trackpoint + 417 1 e 1 fn_ctrl_swap +@@ -72,6 +73,8 @@ enumerations + 13 0 Disable + 13 1 AC and battery + 13 2 AC only ++14 0 Disable ++14 1 Enable + + # ----------------------------------------------------------------- + checksums +diff --git a/src/mainboard/supermicro/x10slm-f/cmos.default b/src/mainboard/supermicro/x10slm-f/cmos.default +index 7ce38fb5d7..6049e7938a 100644 +--- a/src/mainboard/supermicro/x10slm-f/cmos.default ++++ b/src/mainboard/supermicro/x10slm-f/cmos.default +@@ -5,3 +5,4 @@ debug_level=Debug + nmi=Enable + power_on_after_fail=Keep + hide_ast2400=Disable ++iommu=Enable +diff --git a/src/mainboard/supermicro/x10slm-f/cmos.layout b/src/mainboard/supermicro/x10slm-f/cmos.layout +index 38ba87aa45..24d39e97ee 100644 +--- a/src/mainboard/supermicro/x10slm-f/cmos.layout ++++ b/src/mainboard/supermicro/x10slm-f/cmos.layout +@@ -21,6 +21,9 @@ entries + 408 1 e 1 nmi + 409 2 e 5 power_on_after_fail + ++# enable or disable iommu ++412 1 e 6 iommu ++ + # coreboot config options: mainboard + 416 1 e 1 hide_ast2400 + +@@ -55,6 +58,9 @@ enumerations + 5 1 Enable + 5 2 Keep + ++6 0 Disable ++6 1 Enable ++ + # ----------------------------------------------------------------- + checksums + +diff --git a/src/northbridge/intel/haswell/early_init.c b/src/northbridge/intel/haswell/early_init.c +index e47deb5da6..1a7e0b1076 100644 +--- a/src/northbridge/intel/haswell/early_init.c ++++ b/src/northbridge/intel/haswell/early_init.c +@@ -5,6 +5,7 @@ + #include <device/mmio.h> + #include <device/pci_def.h> + #include <device/pci_ops.h> ++#include <option.h> + + #include "haswell.h" + +@@ -157,6 +158,10 @@ static void haswell_setup_misc(void) + static void haswell_setup_iommu(void) + { + const u32 capid0_a = pci_read_config32(HOST_BRIDGE, CAPID0_A); ++ u8 enable_iommu = get_uint_option("iommu", 1); ++ ++ if (!enable_iommu) ++ return; + + if (capid0_a & VTD_DISABLE) + return; +-- +2.39.2 + |