diff options
| author | Subrata Banik <subratabanik@google.com> | 2022-05-30 18:11:12 +0000 |
|---|---|---|
| committer | Paul Fagerburg <pfagerburg@chromium.org> | 2022-06-02 15:58:46 +0000 |
| commit | 37a55d16fc1002313392e63e33ca275a5c47238d (patch) | |
| tree | 15ca9b4de279b0026b705fcb95c0daf69baa695f /src/soc/intel/apollolake | |
| parent | 0024678d17586aa294684e2b27acf5c04b22fb08 (diff) | |
soc/intel/common/cpu: Use SoC overrides to set CPU privilege level
This patch implements a SoC overrides to set CPU privilege level
as the MSR is not consistent across platforms. For example:
On APL/GLK/DNV, it's MSR 0x120 and CNL onwards it's MSR 0x151.
BUG=b:233199592
TEST=Build and boot google/taeko to ChromeOS.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I4584516102560e6bb2a4ae8c0d036be40ed96990
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64806
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Diffstat (limited to 'src/soc/intel/apollolake')
| -rw-r--r-- | src/soc/intel/apollolake/cpu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/cpu.c b/src/soc/intel/apollolake/cpu.c index 79a69f518c..ec262f7b35 100644 --- a/src/soc/intel/apollolake/cpu.c +++ b/src/soc/intel/apollolake/cpu.c @@ -54,6 +54,15 @@ bool cpu_soc_is_in_untrusted_mode(void) return !!(msr.lo & ENABLE_IA_UNTRUSTED); } +void cpu_soc_bios_done(void) +{ + msr_t msr; + + msr = rdmsr(MSR_POWER_MISC); + msr.lo |= ENABLE_IA_UNTRUSTED; + wrmsr(MSR_POWER_MISC, msr); +} + void soc_core_init(struct device *cpu) { /* Configure Core PRMRR for SGX. */ |