diff options
| author | Xie, Yuanhao <yuanhao.xie@intel.com> | 2023-03-01 14:09:52 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-03-07 08:14:59 +0000 |
| commit | facf52aeb8accb312acfd34b60266d4ea866afbb (patch) | |
| tree | 45874e3cb7bfd3cb2a1723b9b1a02f622bdf0b86 /UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | |
| parent | 6bc74286e7f57d6c7bd29a7b5e4eb8026c5a8012 (diff) | |
| download | edk2-facf52aeb8accb312acfd34b60266d4ea866afbb.tar.gz edk2-facf52aeb8accb312acfd34b60266d4ea866afbb.tar.bz2 edk2-facf52aeb8accb312acfd34b60266d4ea866afbb.zip | |
UefiCpuPkg: Put APs in 64 bit mode before handoff to OS.
Add the 'AsmRelocateApLoopStartGeneric' for X64 processors except 64-bit
AMD processors with SEV-ES.
Remove the unused arguments of AsmRelocateApLoopStartGeneric, updated
the stack offset.
Create PageTable for the allocated reserved memory.
Only keep 4GB limitation of memory allocation for the case APs still
need to be transferred to 32-bit mode before OS.
Cc: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james.lu@intel.com>
Cc: Gua Guo <gua.guo@intel.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm b/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm index 5d71995bf8..c0d7355c6b 100644 --- a/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm +++ b/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm @@ -1,5 +1,5 @@ ;------------------------------------------------------------------------------ ;
-; Copyright (c) 2015 - 2022, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2015 - 2023, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
@@ -448,6 +448,58 @@ BITS 64 AsmRelocateApLoopEnd:
;-------------------------------------------------------------------------------------
+; AsmRelocateApLoop (MwaitSupport, ApTargetCState, TopOfApStack, CountTofinish, Cr3);
+; This function is called during the finalizaiton of Mp initialization before booting
+; to OS, and aim to put Aps either in Mwait or HLT.
+;-------------------------------------------------------------------------------------
+; +----------------+
+; | Cr3 | rsp+40
+; +----------------+
+; | CountTofinish | r9
+; +----------------+
+; | TopOfApStack | r8
+; +----------------+
+; | ApTargetCState | rdx
+; +----------------+
+; | MwaitSupport | rcx
+; +----------------+
+; | the return |
+; +----------------+ low address
+
+AsmRelocateApLoopGenericStart:
+ mov rax, r9 ; CountTofinish
+ lock dec dword [rax] ; (*CountTofinish)--
+
+ mov rax, [rsp + 40] ; Cr3
+ ; Do not push on old stack, since old stack is not mapped
+ ; in the page table pointed by cr3
+ mov cr3, rax
+ mov rsp, r8 ; TopOfApStack
+
+MwaitCheckGeneric:
+ cmp cl, 1 ; Check mwait-monitor support
+ jnz HltLoopGeneric
+ mov rbx, rdx ; Save C-State to ebx
+
+MwaitLoopGeneric:
+ cli
+ mov rax, rsp ; Set Monitor Address
+ xor ecx, ecx ; ecx = 0
+ xor edx, edx ; edx = 0
+ monitor
+ mov rax, rbx ; Mwait Cx, Target C-State per eax[7:4]
+ shl eax, 4
+ mwait
+ jmp MwaitLoopGeneric
+
+HltLoopGeneric:
+ cli
+ hlt
+ jmp HltLoopGeneric
+
+AsmRelocateApLoopGenericEnd:
+
+;-------------------------------------------------------------------------------------
; AsmGetAddressMap (&AddressMap);
;-------------------------------------------------------------------------------------
global ASM_PFX(AsmGetAddressMap)
@@ -456,6 +508,9 @@ ASM_PFX(AsmGetAddressMap): mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RendezvousFunnelAddress], rax
mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.ModeEntryOffset], LongModeStart - RendezvousFunnelProcStart
mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RendezvousFunnelSize], RendezvousFunnelProcEnd - RendezvousFunnelProcStart
+lea rax, [AsmRelocateApLoopGenericStart]
+ mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RelocateApLoopFuncAddressGeneric], rax
+ mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RelocateApLoopFuncSizeGeneric], AsmRelocateApLoopGenericEnd - AsmRelocateApLoopGenericStart
lea rax, [AsmRelocateApLoopStart]
mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RelocateApLoopFuncAddress], rax
mov qword [rcx + MP_ASSEMBLY_ADDRESS_MAP.RelocateApLoopFuncSize], AsmRelocateApLoopEnd - AsmRelocateApLoopStart
|