From 240752c612e61222f79c4514210f7be44854f4ca Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 17 Jul 2020 08:48:22 -0600 Subject: x86: mtrr: Use MP calls to list the MTRRs Update the mtrr command to use mp_run_on_cpus() to obtain its information. Since the selected CPU is the boot CPU this does not change the result, but it sets the stage for supporting other CPUs. Signed-off-by: Simon Glass Reviewed-by: Wolfgang Wallner Reviewed-by: Bin Meng --- arch/x86/cpu/mtrr.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/x86/cpu/mtrr.c') diff --git a/arch/x86/cpu/mtrr.c b/arch/x86/cpu/mtrr.c index 7ec0733337..c9b4e7d06e 100644 --- a/arch/x86/cpu/mtrr.c +++ b/arch/x86/cpu/mtrr.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -63,6 +64,16 @@ static void set_var_mtrr(uint reg, uint type, uint64_t start, uint64_t size) wrmsrl(MTRR_PHYS_MASK_MSR(reg), mask | MTRR_PHYS_MASK_VALID); } +void mtrr_read_all(struct mtrr_info *info) +{ + int i; + + for (i = 0; i < MTRR_COUNT; i++) { + info->mtrr[i].base = native_read_msr(MTRR_PHYS_BASE_MSR(i)); + info->mtrr[i].mask = native_read_msr(MTRR_PHYS_MASK_MSR(i)); + } +} + int mtrr_commit(bool do_caches) { struct mtrr_request *req = gd->arch.mtrr_req; -- cgit