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ArmVirtPkg/PrePi: remove global variable allocation from lowlevel init 

Now that we dropped all ArmPlatformGlobalVariableLib dependencies,
there is no longer a need to allocate and clear out the global
variable region in the PrePi init code. So remove it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18991 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2015-11-27 17:06:48 +00:00 committed by abiesheuvel
parent 1856157a55
commit 5eeba3b7f1
4 changed files with 2 additions and 42 deletions
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7
ArmVirtPkg/PrePi/AArch64/ModuleEntryPoint.S
View File

@ -158,16 +158,10 @@ _GetStackBase:
cmp x0, #1
bne _PrepareArguments
_ReserveGlobalVariable:
LoadConstantToReg (FixedPcdGet32(PcdPeiGlobalVariableSize), x0)
// InitializePrimaryStack($GlobalVariableSize, $Tmp1, $Tmp2)
InitializePrimaryStack(x0, x1, x2)
_PrepareArguments:
mov x0, x10
mov x1, x11
mov x2, x12
mov x3, sp
// Move sec startup address into a data register
// Ensure we're jumping to FV version of the code (not boot remapped alias)
@ -177,7 +171,6 @@ _PrepareArguments:
// x0 = MpId
// x1 = UefiMemoryBase
// x2 = StacksBase
// x3 = GlobalVariableBase
blr x4
_NeverReturn:

3
ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf
View File

@ -61,7 +61,6 @@
gArmMpCoreInfoPpiGuid
[Guids]
gArmGlobalVariableGuid
gArmMpCoreInfoGuid
[FeaturePcd]
@ -79,8 +78,6 @@
gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize
gArmPlatformTokenSpaceGuid.PcdPeiGlobalVariableSize
gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
gArmPlatformTokenSpaceGuid.PcdCoreCount

33
ArmVirtPkg/PrePi/PrePi.c
View File

@ -25,14 +25,10 @@
#include <Ppi/GuidedSectionExtraction.h>
#include <Ppi/ArmMpCoreInfo.h>
#include <Guid/LzmaDecompress.h>
#include <Guid/ArmGlobalVariableHob.h>
#include "PrePi.h"
#include "LzmaDecompress.h"
// Not used when PrePi in run in XIP mode
UINTN mGlobalVariableBase = 0;
EFI_STATUS
EFIAPI
ExtractGuidedSectionLibConstructor (
@ -45,23 +41,6 @@ LzmaDecompressLibConstructor (
VOID
);
VOID
EFIAPI
BuildGlobalVariableHob (
IN EFI_PHYSICAL_ADDRESS GlobalVariableBase,
IN UINT32 GlobalVariableSize
)
{
ARM_HOB_GLOBAL_VARIABLE *Hob;
Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, sizeof (ARM_HOB_GLOBAL_VARIABLE));
ASSERT(Hob != NULL);
CopyGuid (&(Hob->Header.Name), &gArmGlobalVariableGuid);
Hob->GlobalVariableBase = GlobalVariableBase;
Hob->GlobalVariableSize = GlobalVariableSize;
}
EFI_STATUS
GetPlatformPpi (
IN EFI_GUID *PpiGuid,
@ -90,7 +69,6 @@ VOID
PrePiMain (
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINTN GlobalVariableBase,
IN UINT64 StartTimeStamp
)
{
@ -133,9 +111,6 @@ PrePiMain (
StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
BuildStackHob (StacksBase, StacksSize);
// Declare the Global Variable HOB
BuildGlobalVariableHob (GlobalVariableBase, FixedPcdGet32 (PcdPeiGlobalVariableSize));
//TODO: Call CpuPei as a library
BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
@ -174,8 +149,7 @@ VOID
CEntryPoint (
IN UINTN MpId,
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINTN GlobalVariableBase
IN UINTN StacksBase
)
{
UINT64 StartTimeStamp;
@ -199,10 +173,7 @@ CEntryPoint (
// Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
// Define the Global Variable region
mGlobalVariableBase = GlobalVariableBase;
PrePiMain (UefiMemoryBase, StacksBase, GlobalVariableBase, StartTimeStamp);
PrePiMain (UefiMemoryBase, StacksBase, StartTimeStamp);
// DXE Core should always load and never return
ASSERT (FALSE);

1
ArmVirtPkg/PrePi/PrePi.h
View File

@ -41,7 +41,6 @@ VOID
PrePiMain (
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINTN GlobalVariableBase,
IN UINT64 StartTimeStamp
);