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-rw-r--r--src/cpu/amd/model_fxx/model_fxx_init.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/cpu/amd/model_fxx/model_fxx_init.c b/src/cpu/amd/model_fxx/model_fxx_init.c
index db936f8933..93fa07f961 100644
--- a/src/cpu/amd/model_fxx/model_fxx_init.c
+++ b/src/cpu/amd/model_fxx/model_fxx_init.c
@@ -460,6 +460,18 @@ static void model_fxx_init(device_t dev)
/* Turn on caching if we haven't already */
x86_enable_cache();
+
+ /* Initialize all variable MTRRs except the first pair */
+ msr.hi = 0x00000000;
+ msr.lo = 0x00000000;
+
+ disable_cache();
+
+ for (i = 0x2; i < 0x10; i++) {
+ wrmsr(0x00000200 | i, msr);
+ }
+
+ enable_cache();
amd_setup_mtrrs();
x86_mtrr_check();