diff options
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm b/UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm index 8bacb42836..49f5503530 100644 --- a/UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm +++ b/UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm @@ -169,6 +169,30 @@ CProcedureInvoke: RendezvousFunnelProcEnd:
;-------------------------------------------------------------------------------------
+; AsmRelocateApLoop (MwaitSupport, ApTargetCState, PmCodeSegment);
+;-------------------------------------------------------------------------------------
+global ASM_PFX(AsmRelocateApLoop)
+ASM_PFX(AsmRelocateApLoop):
+AsmRelocateApLoopStart:
+ cmp byte [esp + 4], 1
+ jnz HltLoop
+MwaitLoop:
+ mov eax, esp
+ xor ecx, ecx
+ xor edx, edx
+ monitor
+ mov eax, [esp + 8] ; Mwait Cx, Target C-State per eax[7:4]
+ shl eax, 4
+ mwait
+ jmp MwaitLoop
+HltLoop:
+ cli
+ hlt
+ jmp HltLoop
+ ret
+AsmRelocateApLoopEnd:
+
+;-------------------------------------------------------------------------------------
; AsmGetAddressMap (&AddressMap);
;-------------------------------------------------------------------------------------
global ASM_PFX(AsmGetAddressMap)
|