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| author | Ted Kuo <ted.kuo@intel.com> | 2022-04-15 01:37:42 -0700 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-16 00:18:14 +0000 |
| commit | 86a2f3c439b1d74d31492760a213063e642f8a00 (patch) | |
| tree | 837170db0d2fb75ea7f85911517904cace5f5908 /IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c | |
| parent | 4a6ed7e46a0013966d14a2ec4422c7899c444dc0 (diff) | |
| download | edk2-86a2f3c439b1d74d31492760a213063e642f8a00.tar.gz edk2-86a2f3c439b1d74d31492760a213063e642f8a00.tar.bz2 edk2-86a2f3c439b1d74d31492760a213063e642f8a00.zip | |
IntelFsp2WrapperPkg: BaseFspWrapperApiLib support for X64
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3893
Add Execute64BitCode to execute 64bit code from long mode directly
in PEI 64bit.
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Ashraf Ali S <ashraf.ali.s@intel.com>
Signed-off-by: Ted Kuo <ted.kuo@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
Diffstat (limited to 'IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c')
| -rw-r--r-- | IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c | 47 |
1 files changed, 44 insertions, 3 deletions
diff --git a/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c index 2ee5bc3dd4..591a5c7a55 100644 --- a/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c +++ b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/X64/DispatchExecute.c @@ -1,9 +1,9 @@ /** @file
- Execute 32-bit code in Long Mode.
+ Execute 64-bit code in Long Mode.
Provide a thunk function to transition from long mode to compatibility mode to execute 32-bit code and then transit
back to long mode.
- Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -12,6 +12,21 @@ #include <Library/BaseLib.h>
#include <FspEas.h>
+/**
+ FSP API functions.
+
+ @param[in] Param1 The first parameter to pass to 64bit code.
+ @param[in] Param2 The second parameter to pass to 64bit code.
+
+ @return EFI_STATUS.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *FSP_FUNCTION)(
+ IN VOID *Param1,
+ IN VOID *Param2
+ );
+
#pragma pack(1)
typedef union {
struct {
@@ -80,7 +95,7 @@ AsmExecute32BitCode ( );
/**
- Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
+ Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
long mode.
@param[in] Function The 32bit code entry to be executed.
@@ -110,3 +125,29 @@ Execute32BitCode ( return Status;
}
+
+/**
+ Wrapper to execute 64-bit code directly from long mode.
+
+ @param[in] Function The 64bit code entry to be executed.
+ @param[in] Param1 The first parameter to pass to 64bit code.
+ @param[in] Param2 The second parameter to pass to 64bit code.
+
+ @return EFI_STATUS.
+**/
+EFI_STATUS
+Execute64BitCode (
+ IN UINT64 Function,
+ IN UINT64 Param1,
+ IN UINT64 Param2
+ )
+{
+ FSP_FUNCTION EntryFunc;
+ EFI_STATUS Status;
+
+ EntryFunc = (FSP_FUNCTION)(UINTN)(Function);
+ Status = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);
+
+ return Status;
+}
+
|