diff options
| author | Lee Leahy <leroy.p.leahy@intel.com> | 2016-06-08 07:11:48 -0700 |
|---|---|---|
| committer | Leroy P Leahy <leroy.p.leahy@intel.com> | 2016-06-09 17:42:12 +0200 |
| commit | 3892597349cdbdf5378718ceb03dbbc53f5d543a (patch) | |
| tree | 400d75aeff7e5c560b591be27624c2c0f8fef1eb /src | |
| parent | 538b324c5f6e890b435dd88f4674cdd09fb56ed9 (diff) | |
arch/x86: Enable SSE in bootblock_crt0.S
Don't write reserved bits in the Quark platform. Follow the previous
boot behavior and just enable SSE.
TEST=Build and run on Galileo Gen2
Change-Id: Ib3143eff02b2610b595bd666c10d70e43103ccda
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15128
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/x86/bootblock_crt0.S | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/src/arch/x86/bootblock_crt0.S b/src/arch/x86/bootblock_crt0.S index 7292b8b17c..9fbce5dbb5 100644 --- a/src/arch/x86/bootblock_crt0.S +++ b/src/arch/x86/bootblock_crt0.S @@ -41,14 +41,10 @@ bootblock_protected_mode_entry: movd %eax, %mm1 movd %edx, %mm2 -#if !IS_ENABLED(CONFIG_SSE) +#if IS_ENABLED(CONFIG_SSE) enable_sse: - mov %cr0, %eax - and $~CR0_EM, %ax /* Clear coprocessor emulation CR0.EM */ - or $CR0_MP, %ax /* Set coprocessor monitoring CR0.MP */ - mov %eax, %cr0 mov %cr4, %eax - or $(CR4_OSFXSR | CR4_OSXMMEXCPT), %ax + or $CR4_OSFXSR, %ax mov %eax, %cr4 #endif /* IS_ENABLED(CONFIG_SSE) */ |