diff options
Diffstat (limited to 'resources/coreboot/default/patches/0017-GM45-type-CPUs-don-t-enable-alternative-SMRR.patch')
| -rw-r--r-- | resources/coreboot/default/patches/0017-GM45-type-CPUs-don-t-enable-alternative-SMRR.patch | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/resources/coreboot/default/patches/0017-GM45-type-CPUs-don-t-enable-alternative-SMRR.patch b/resources/coreboot/default/patches/0017-GM45-type-CPUs-don-t-enable-alternative-SMRR.patch deleted file mode 100644 index 750628cf..00000000 --- a/resources/coreboot/default/patches/0017-GM45-type-CPUs-don-t-enable-alternative-SMRR.patch +++ /dev/null @@ -1,173 +0,0 @@ -From f5859da443fc1ff2450051d1d88bee56346fe63b Mon Sep 17 00:00:00 2001 -From: Leah Rowe <leah@libreboot.org> -Date: Mon, 17 Apr 2023 15:49:57 +0100 -Subject: [PATCH 17/19] GM45-type CPUs: don't enable alternative SMRR - -This reverts the changes in coreboot revision: -df7aecd92643d207feaf7fd840f8835097346644 - -While this fix is *technically correct*, the one in -coreboot, it breaks rebooting as tested on several -GM45 ThinkPads e.g. X200, T400, when microcode -updates are not applied. - -Since November 2022, Libreboot includes microcode -updates by default, but it tells users how to remove -it from the ROM (with cbfstool) if they wish. - -Well, with Libreboot 20221214, 20230319 and 20230413, -mitigations present in Libreboot 20220710 (which did -not have microcode updates) do not exist. - -This patch, along with the other patch to remove PECI -support (which breaks speedstep when microcode updates -are not applied) have now been re-added to Libreboot. - -It is still best to use microcode updates by default. -These patches in coreboot are not critically urgent, -and you can use the machines with or without them, -regardless of ucode. - -I'll probably re-write this and the other patch at -some point, applying the change conditionally upon -whether or not microcode is applied. - -Pragmatism is a good thing. I recommend it. ---- - src/cpu/intel/model_1067x/model_1067x_init.c | 4 +++ - src/cpu/intel/model_1067x/mp_init.c | 26 -------------------- - src/cpu/intel/model_106cx/model_106cx_init.c | 4 +++ - src/cpu/intel/model_6ex/model_6ex_init.c | 4 +++ - src/cpu/intel/model_6fx/model_6fx_init.c | 4 +++ - 5 files changed, 16 insertions(+), 26 deletions(-) - -diff --git a/src/cpu/intel/model_1067x/model_1067x_init.c b/src/cpu/intel/model_1067x/model_1067x_init.c -index 1423fd72bc..d1f98ca43a 100644 ---- a/src/cpu/intel/model_1067x/model_1067x_init.c -+++ b/src/cpu/intel/model_1067x/model_1067x_init.c -@@ -8,6 +8,7 @@ - #include <cpu/x86/cache.h> - #include <cpu/x86/name.h> - #include <cpu/intel/smm_reloc.h> -+#include <cpu/intel/common/common.h> - - #define MSR_BBL_CR_CTL3 0x11e - -@@ -234,6 +235,9 @@ static void model_1067x_init(struct device *cpu) - fill_processor_name(processor_name); - printk(BIOS_INFO, "CPU: %s.\n", processor_name); - -+ /* Set virtualization based on Kconfig option */ -+ set_vmx_and_lock(); -+ - /* Configure C States */ - configure_c_states(quad); - -diff --git a/src/cpu/intel/model_1067x/mp_init.c b/src/cpu/intel/model_1067x/mp_init.c -index bc53214310..72f40f6762 100644 ---- a/src/cpu/intel/model_1067x/mp_init.c -+++ b/src/cpu/intel/model_1067x/mp_init.c -@@ -43,34 +43,8 @@ static void pre_mp_smm_init(void) - smm_initialize(); - } - --#define SMRR_SUPPORTED (1 << 11) -- - static void per_cpu_smm_trigger(void) - { -- msr_t mtrr_cap = rdmsr(MTRR_CAP_MSR); -- if (cpu_has_alternative_smrr() && mtrr_cap.lo & SMRR_SUPPORTED) { -- set_feature_ctrl_vmx(); -- msr_t ia32_ft_ctrl = rdmsr(IA32_FEATURE_CONTROL); -- /* We don't care if the lock is already setting -- as our smm relocation handler is able to handle -- setups where SMRR is not enabled here. */ -- if (ia32_ft_ctrl.lo & (1 << 0)) { -- /* IA32_FEATURE_CONTROL locked. If we set it again we -- get an illegal instruction. */ -- printk(BIOS_DEBUG, "IA32_FEATURE_CONTROL already locked\n"); -- printk(BIOS_DEBUG, "SMRR status: %senabled\n", -- ia32_ft_ctrl.lo & (1 << 3) ? "" : "not "); -- } else { -- if (!CONFIG(SET_IA32_FC_LOCK_BIT)) -- printk(BIOS_INFO, -- "Overriding CONFIG(SET_IA32_FC_LOCK_BIT) to enable SMRR\n"); -- ia32_ft_ctrl.lo |= (1 << 3) | (1 << 0); -- wrmsr(IA32_FEATURE_CONTROL, ia32_ft_ctrl); -- } -- } else { -- set_vmx_and_lock(); -- } -- - /* Relocate the SMM handler. */ - smm_relocate(); - } -diff --git a/src/cpu/intel/model_106cx/model_106cx_init.c b/src/cpu/intel/model_106cx/model_106cx_init.c -index 05f5f327cc..0450c2ad83 100644 ---- a/src/cpu/intel/model_106cx/model_106cx_init.c -+++ b/src/cpu/intel/model_106cx/model_106cx_init.c -@@ -7,6 +7,7 @@ - #include <cpu/intel/speedstep.h> - #include <cpu/x86/cache.h> - #include <cpu/x86/name.h> -+#include <cpu/intel/common/common.h> - - #define HIGHEST_CLEVEL 3 - static void configure_c_states(void) -@@ -66,6 +67,9 @@ static void model_106cx_init(struct device *cpu) - fill_processor_name(processor_name); - printk(BIOS_INFO, "CPU: %s.\n", processor_name); - -+ /* Set virtualization based on Kconfig option */ -+ set_vmx_and_lock(); -+ - /* Configure C States */ - configure_c_states(); - -diff --git a/src/cpu/intel/model_6ex/model_6ex_init.c b/src/cpu/intel/model_6ex/model_6ex_init.c -index 5bd1c32815..f3bb08cde3 100644 ---- a/src/cpu/intel/model_6ex/model_6ex_init.c -+++ b/src/cpu/intel/model_6ex/model_6ex_init.c -@@ -7,6 +7,7 @@ - #include <cpu/intel/speedstep.h> - #include <cpu/x86/cache.h> - #include <cpu/x86/name.h> -+#include <cpu/intel/common/common.h> - - #define HIGHEST_CLEVEL 3 - static void configure_c_states(void) -@@ -105,6 +106,9 @@ static void model_6ex_init(struct device *cpu) - /* Setup Page Attribute Tables (PAT) */ - // TODO set up PAT - -+ /* Set virtualization based on Kconfig option */ -+ set_vmx_and_lock(); -+ - /* Configure C States */ - configure_c_states(); - -diff --git a/src/cpu/intel/model_6fx/model_6fx_init.c b/src/cpu/intel/model_6fx/model_6fx_init.c -index 535fb8fae7..f7b05facd2 100644 ---- a/src/cpu/intel/model_6fx/model_6fx_init.c -+++ b/src/cpu/intel/model_6fx/model_6fx_init.c -@@ -7,6 +7,7 @@ - #include <cpu/intel/speedstep.h> - #include <cpu/x86/cache.h> - #include <cpu/x86/name.h> -+#include <cpu/intel/common/common.h> - - #define HIGHEST_CLEVEL 3 - static void configure_c_states(void) -@@ -118,6 +119,9 @@ static void model_6fx_init(struct device *cpu) - /* Setup Page Attribute Tables (PAT) */ - // TODO set up PAT - -+ /* Set virtualization based on Kconfig option */ -+ set_vmx_and_lock(); -+ - /* Configure C States */ - configure_c_states(); - --- -2.39.2 - |