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https://github.com/CloverHackyColor/CloverBootloader.git
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99 lines
2.1 KiB
ArmAsm
99 lines
2.1 KiB
ArmAsm
//
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// Copyright (c) 2012-2013, ARM Limited. All rights reserved.
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//
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// SPDX-License-Identifier: BSD-2-Clause-Patent
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//
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//
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#include <AsmMacroIoLib.h>
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//VOID
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//ArmPlatformStackSet (
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// IN UINTN StackBase,
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// IN UINTN MpId,
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// IN UINTN PrimaryStackSize,
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// IN UINTN SecondaryStackSize
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// );
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ASM_FUNC(ArmPlatformStackSet)
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// Save parameters
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mov r6, r3
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mov r5, r2
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mov r4, r1
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mov r3, r0
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// Save the Link register
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mov r7, lr
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// Identify Stack
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mov r0, r1
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bl ASM_PFX(ArmPlatformIsPrimaryCore)
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cmp r0, #1
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// Restore parameters
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mov r0, r3
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mov r1, r4
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mov r2, r5
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mov r3, r6
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// Restore the Link register
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mov lr, r7
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beq ASM_PFX(ArmPlatformStackSetPrimary)
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bne ASM_PFX(ArmPlatformStackSetSecondary)
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//VOID
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//ArmPlatformStackSetPrimary (
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// IN UINTN StackBase,
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// IN UINTN MpId,
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// IN UINTN PrimaryStackSize,
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// IN UINTN SecondaryStackSize
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// );
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ASM_FUNC(ArmPlatformStackSetPrimary)
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mov r4, lr
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// Add stack of primary stack to StackBase
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add r0, r0, r2
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// Compute SecondaryCoresCount * SecondaryCoreStackSize
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MOV32 (r1, FixedPcdGet32(PcdCoreCount) - 1)
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mul r3, r3, r1
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// Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))
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add sp, r0, r3
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bx r4
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//VOID
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//ArmPlatformStackSetSecondary (
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// IN UINTN StackBase,
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// IN UINTN MpId,
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// IN UINTN PrimaryStackSize,
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// IN UINTN SecondaryStackSize
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// );
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ASM_FUNC(ArmPlatformStackSetSecondary)
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mov r4, lr
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mov sp, r0
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// Get Core Position
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mov r0, r1
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bl ASM_PFX(ArmPlatformGetCorePosition)
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mov r5, r0
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// Get Primary Core Position
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bl ASM_PFX(ArmPlatformGetPrimaryCoreMpId)
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bl ASM_PFX(ArmPlatformGetCorePosition)
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// Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)
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cmp r5, r0
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subhi r5, r5, #1
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add r5, r5, #1
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// Compute top of the secondary stack
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mul r3, r3, r5
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// Set stack
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add sp, sp, r3
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bx r4
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