diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-12-01 10:48:43 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-12-09 23:54:14 +0100 |
| commit | b84c833bfd258f92fc7d24b2308537e41b7b8ce4 (patch) | |
| tree | 5484f9d4839e4a2b270de4001c26efa1bb935bbc /src/cpu | |
| parent | eb9c639a1bab81758e0eb7d348193054c7b96545 (diff) | |
intel/sandybridge: Use postcar_frame for MTRR setup
Adapt implementation from skylake.
Change-Id: Ica3134a2261d3e84c714264cf75557322f9ef5db
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17673
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/intel/model_206ax/cache_as_ram.inc | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/src/cpu/intel/model_206ax/cache_as_ram.inc b/src/cpu/intel/model_206ax/cache_as_ram.inc index f0d49390ba..149cae6581 100644 --- a/src/cpu/intel/model_206ax/cache_as_ram.inc +++ b/src/cpu/intel/model_206ax/cache_as_ram.inc @@ -225,12 +225,29 @@ before_romstage: post_code(0x38) - /* Get number of MTRRs. */ + /* Clear all of the variable MTRRs. */ popl %ebx movl $MTRR_PHYS_BASE(0), %ecx + clr %eax + clr %edx + 1: testl %ebx, %ebx jz 1f + wrmsr /* Write MTRR base. */ + inc %ecx + wrmsr /* Write MTRR mask. */ + inc %ecx + dec %ebx + jmp 1b + +1: + /* Get number of MTRRs. */ + popl %ebx + movl $MTRR_PHYS_BASE(0), %ecx +2: + testl %ebx, %ebx + jz 2f /* Low 32 bits of MTRR base. */ popl %eax @@ -248,8 +265,9 @@ before_romstage: inc %ecx dec %ebx - jmp 1b -1: + jmp 2b +2: + post_code(0x39) /* And enable cache again after setting MTRRs. */ |