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IntelFsp2Pkg: Add function to get bootloader stack pointer

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1391

FSP on-going enhancement for stack utilization required
to know bootloader stack pointer and this pointer can be
retrieved by first input parameter address when FSP-M
entry API invoked by bootloader.

Test: Verified on internal platform and booting successfully

Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
This commit is contained in:
Chasel, Chiu 2019-01-23 12:07:45 +08:00
parent f30e4aed99
commit 35897da27e
2 changed files with 38 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
IntelFsp2Pkg/Include/Library/FspCommonLib.h
View File

@ -1,6 +1,6 @@
/** @file /** @file
Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR> Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at which accompanies this distribution. The full text of the license may be found at
@ -40,9 +40,9 @@ GetFspGlobalDataPointer (
); );
/** /**
This function gets back the FSP API first parameter passed by the bootlaoder. This function gets back the FSP API first parameter passed by the bootloader.
@retval ApiParameter FSP API first parameter passed by the bootlaoder. @retval ApiParameter FSP API first parameter passed by the bootloader.
**/ **/
UINT32 UINT32
EFIAPI EFIAPI
@ -51,9 +51,9 @@ GetFspApiParameter (
); );
/** /**
This function gets back the FSP API second parameter passed by the bootlaoder. This function gets back the FSP API second parameter passed by the bootloader.
@retval ApiParameter FSP API second parameter passed by the bootlaoder. @retval ApiParameter FSP API second parameter passed by the bootloader.
**/ **/
UINT32 UINT32
EFIAPI EFIAPI
@ -61,6 +61,17 @@ GetFspApiParameter2 (
VOID VOID
); );
/**
This function returns the FSP entry stack pointer from address of the first API parameter.
@retval FSP entry stack pointer.
**/
VOID*
EFIAPI
GetFspEntryStack (
VOID
);
/** /**
This function sets the FSP API parameter in the stack. This function sets the FSP API parameter in the stack.

27
IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c
View File

@ -1,6 +1,6 @@
/** @file /** @file
Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR> Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at which accompanies this distribution. The full text of the license may be found at
@ -87,9 +87,9 @@ GetFspGlobalDataPointer (
} }
/** /**
This function gets back the FSP API first parameter passed by the bootlaoder. This function gets back the FSP API first parameter passed by the bootloader.
@retval ApiParameter FSP API first parameter passed by the bootlaoder. @retval ApiParameter FSP API first parameter passed by the bootloader.
**/ **/
UINT32 UINT32
EFIAPI EFIAPI
@ -104,9 +104,26 @@ GetFspApiParameter (
} }
/** /**
This function gets back the FSP API second parameter passed by the bootlaoder. This function returns the FSP entry stack pointer from address of the first API parameter.
@retval ApiParameter FSP API second parameter passed by the bootlaoder. @retval FSP entry stack pointer.
**/
VOID*
EFIAPI
GetFspEntryStack (
VOID
)
{
FSP_GLOBAL_DATA *FspData;
FspData = GetFspGlobalDataPointer ();
return (VOID*)(FspData->CoreStack + CONTEXT_STACK_OFFSET(ApiParam[0]));
}
/**
This function gets back the FSP API second parameter passed by the bootloader.
@retval ApiParameter FSP API second parameter passed by the bootloader.
**/ **/
UINT32 UINT32
EFIAPI EFIAPI