From b095a5403b1dd2ad7af153069f3729716a864e80 Mon Sep 17 00:00:00 2001 From: "Yao, Jiewen" Date: Fri, 27 Nov 2015 13:48:08 +0000 Subject: [PATCH] UefiCpuPkg/PiSmmCpu: Add NULL func for 2 new APIs in SmmCpuFeaturesLib. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" Reviewed-by: "Kinney, Michael D" Cc: "Fan, Jeff" Cc: "Kinney, Michael D" Cc: "Laszlo Ersek" git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18980 6f19259b-4bc3-4df7-8a09-765794883524 --- .../SmmCpuFeaturesLib/SmmCpuFeaturesLib.c | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c index b839d3192f..3e480e1761 100644 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c @@ -615,3 +615,44 @@ SmmCpuFeaturesWriteSaveStateRegister ( { return EFI_UNSUPPORTED; } + +/** + This function is hook point called after the gEfiSmmReadyToLockProtocolGuid + notification is completely processed. +**/ +VOID +EFIAPI +SmmCpuFeaturesCompleteSmmReadyToLock ( + VOID + ) +{ +} + +/** + This API provides a method for a CPU to allocate a specific region for storing page tables. + + This API can be called more once to allocate memory for page tables. + + Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the + allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL + is returned. If there is not enough memory remaining to satisfy the request, then NULL is + returned. + + This function can also return NULL if there is no preference on where the page tables are allocated in SMRAM. + + @param Pages The number of 4 KB pages to allocate. + + @return A pointer to the allocated buffer for page tables. + @retval NULL Fail to allocate a specific region for storing page tables, + Or there is no preference on where the page tables are allocated in SMRAM. + +**/ +VOID * +EFIAPI +SmmCpuFeaturesAllocatePageTableMemory ( + IN UINTN Pages + ) +{ + return NULL; +} + -- 2.39.2