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| //
| // Copyright (c) 2012-2014, ARM Limited. All rights reserved.
| //
| // SPDX-License-Identifier: BSD-2-Clause-Patent
| //
| //
|
| #include <AsmMacroIoLibV8.h>
|
| //VOID
| //ArmPlatformStackSet (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ASM_FUNC(ArmPlatformStackSet)
| // Save parameters
| mov x26, x3
| mov x25, x2
| mov x24, x1
| mov x23, x0
|
| // Save the Link register
| mov x27, x30
|
| // Identify Stack
| mov x0, x1
| bl ASM_PFX(ArmPlatformIsPrimaryCore)
| cmp x0, #1
|
| // Restore parameters
| mov x0, x23
| mov x1, x24
| mov x2, x25
| mov x3, x26
|
| // Restore the Link register
| mov x30, x27
|
| b.ne 0f
|
| b ASM_PFX(ArmPlatformStackSetPrimary)
| 0:b ASM_PFX(ArmPlatformStackSetSecondary)
|
| //VOID
| //ArmPlatformStackSetPrimary (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ASM_FUNC(ArmPlatformStackSetPrimary)
| // Add size of primary stack to StackBase
| add x0, x0, x2
|
| // Compute SecondaryCoresCount * SecondaryCoreStackSize
| MOV32 (w1, FixedPcdGet32(PcdCoreCount) - 1)
| mul x3, x3, x1
|
| // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))
| add sp, x0, x3
|
| ret
|
| //VOID
| //ArmPlatformStackSetSecondary (
| // IN UINTN StackBase,
| // IN UINTN MpId,
| // IN UINTN PrimaryStackSize,
| // IN UINTN SecondaryStackSize
| // );
| ASM_FUNC(ArmPlatformStackSetSecondary)
| // Save the Link register
| mov x24, x30
| mov sp, x0
|
| // Get Core Position
| mov x0, x1
| bl ASM_PFX(ArmPlatformGetCorePosition)
| mov x25, x0
|
| // Get Primary Core Position
| bl ASM_PFX(ArmPlatformGetPrimaryCoreMpId)
| bl ASM_PFX(ArmPlatformGetCorePosition)
|
| // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)
| cmp x25, x0
|
| // Decrement the position if after the primary core
| cinc x25, x25, ls
|
| // Compute top of the secondary stack
| mul x3, x3, x25
|
| // Set stack
| add sp, sp, x3
|
| ret x24
|
|
