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//
// Copyright (c) 2011-2013, ARM Limited. All rights reserved.
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
//
#include <AsmMacroIoLib.h>
ASM_FUNC(_ModuleEntryPoint)
// Do early platform specific actions
bl ASM_PFX(ArmPlatformPeiBootAction)
// Identify CPU ID
bl ASM_PFX(ArmReadMpidr)
// Keep a copy of the MpId register value
mov r5, r0
// Is it the Primary Core ?
bl ASM_PFX(ArmPlatformIsPrimaryCore)
// Get the top of the primary stacks (and the base of the secondary stacks)
MOV32 (r1, FixedPcdGet64(PcdCPUCoresStackBase) + FixedPcdGet32(PcdCPUCorePrimaryStackSize))
// r0 is equal to 1 if I am the primary core
cmp r0, #1
beq _SetupPrimaryCoreStack
_SetupSecondaryCoreStack:
// r1 contains the base of the secondary stacks
// Get the Core Position
mov r6, r1 // Save base of the secondary stacks
mov r0, r5
bl ASM_PFX(ArmPlatformGetCorePosition)
// The stack starts at the top of the stack region. Add '1' to the Core Position to get the top of the stack
add r0, r0, #1
// StackOffset = CorePos * StackSize
MOV32 (r2, FixedPcdGet32(PcdCPUCoreSecondaryStackSize))
mul r0, r0, r2
// SP = StackBase + StackOffset
add sp, r6, r0
_PrepareArguments:
// The PEI Core Entry Point has been computed by GenFV and stored in the second entry of the Reset Vector
MOV32 (r2, FixedPcdGet32(PcdFvBaseAddress))
ldr r1, [r2, #4]
// Move sec startup address into a data register
// Ensure we're jumping to FV version of the code (not boot remapped alias)
ldr r3, =ASM_PFX(CEntryPoint)
// Jump to PrePeiCore C code
// r0 = mp_id
// r1 = pei_core_address
mov r0, r5
blx r3
_SetupPrimaryCoreStack:
mov sp, r1
MOV32 (r8, FixedPcdGet64 (PcdCPUCoresStackBase))
MOV32 (r9, FixedPcdGet32 (PcdInitValueInTempStack))
mov r10, r9
mov r11, r9
mov r12, r9
0:stm r8!, {r9-r12}
cmp r8, r1
blt 0b
b _PrepareArguments
_NeverReturn:
b _NeverReturn
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