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| //
| // Copyright (c) 2012-2013, ARM Limited. All rights reserved.
| //
| // SPDX-License-Identifier: BSD-2-Clause-Patent
| //
| //
|
| #include <AutoGen.h>
|
| INCLUDE AsmMacroIoLib.inc
|
| EXPORT ArmPlatformStackSet
| EXPORT ArmPlatformStackSetPrimary
| EXPORT ArmPlatformStackSetSecondary
|
| IMPORT ArmPlatformIsPrimaryCore
| IMPORT ArmPlatformGetCorePosition
| IMPORT ArmPlatformGetPrimaryCoreMpId
|
| IMPORT _gPcd_FixedAtBuild_PcdCoreCount
|
| PRESERVE8
| AREA ArmPlatformStackLib, CODE, READONLY
|
| //VOID
| //ArmPlatformStackSet (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ArmPlatformStackSet FUNCTION
| // Save parameters
| mov r6, r3
| mov r5, r2
| mov r4, r1
| mov r3, r0
|
| // Save the Link register
| mov r7, lr
|
| // Identify Stack
| mov r0, r1
| bl ArmPlatformIsPrimaryCore
| cmp r0, #1
|
| // Restore parameters
| mov r0, r3
| mov r1, r4
| mov r2, r5
| mov r3, r6
|
| // Restore the Link register
| mov lr, r7
|
| beq ArmPlatformStackSetPrimary
| bne ArmPlatformStackSetSecondary
| ENDFUNC
|
| //VOID
| //ArmPlatformStackSetPrimary (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ArmPlatformStackSetPrimary FUNCTION
| mov r4, lr
|
| // Add stack of primary stack to StackBase
| add r0, r0, r2
|
| // Compute SecondaryCoresCount * SecondaryCoreStackSize
| mov32 r1, FixedPcdGet32 (PcdCoreCount)
| sub r1, #1
| mul r3, r3, r1
|
| // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))
| add sp, r0, r3
|
| bx r4
| ENDFUNC
|
| //VOID
| //ArmPlatformStackSetSecondary (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ArmPlatformStackSetSecondary FUNCTION
| mov r4, lr
| mov sp, r0
|
| // Get Core Position
| mov r0, r1
| bl ArmPlatformGetCorePosition
| mov r5, r0
|
| // Get Primary Core Position
| bl ArmPlatformGetPrimaryCoreMpId
| bl ArmPlatformGetCorePosition
|
| // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)
| cmp r5, r0
| subhi r5, r5, #1
| add r5, r5, #1
|
| // Compute top of the secondary stack
| mul r3, r3, r5
|
| // Set stack
| add sp, sp, r3
|
| bx r4
| ENDFUNC
|
| END
|
|
