diff options
Diffstat (limited to 'src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc')
| -rw-r--r-- | src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc b/src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc index 2399bec91b..46946327ce 100644 --- a/src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc +++ b/src/vendorcode/amd/pi/00670F00/binaryPI/gcccar.inc @@ -1158,6 +1158,13 @@ w64k_here: 0: _WRMSR # + # All cores must see BSP stack region that is also used to + # communicate global variables before DRAM is up. + mov $AMD_MTRR_FIX64k_00000, %ecx # MSR:0000_0250 + _RDMSR + or $0x1e000000, %eax + _WRMSR + # Enable MTRR defaults as UC type mov $AMD_MTRR_DEFTYPE, %ecx # MSR:0000_02FF _RDMSR # Read-modify-write the MSR |