diff options
Diffstat (limited to 'src/soc/amd/sabrina/cpu.c')
| -rw-r--r-- | src/soc/amd/sabrina/cpu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/soc/amd/sabrina/cpu.c b/src/soc/amd/sabrina/cpu.c index addbf7ec18c9..462fb0d6fdaf 100644 --- a/src/soc/amd/sabrina/cpu.c +++ b/src/soc/amd/sabrina/cpu.c @@ -9,6 +9,7 @@ #include <assert.h> #include <console/console.h> #include <cpu/amd/microcode.h> +#include <cpu/amd/mtrr.h> #include <cpu/cpu.h> #include <cpu/x86/mp.h> #include <cpu/x86/mtrr.h> @@ -33,7 +34,11 @@ _Static_assert(CONFIG_MAX_CPUS == 8, "Do not override MAX_CPUS. To reduce the nu */ static void pre_mp_init(void) { - x86_setup_mtrrs_with_detect_no_above_4gb(); + const msr_t syscfg = rdmsr(SYSCFG_MSR); + if (syscfg.lo & SYSCFG_MSR_TOM2WB) + x86_setup_mtrrs_with_detect_no_above_4gb(); + else + x86_setup_mtrrs_with_detect(); x86_mtrr_check(); } |