// | |
// Copyright (c) 2011-2013, ARM Limited. All rights reserved. | |
// | |
// This program and the accompanying materials | |
// are licensed and made available under the terms and conditions of the BSD License | |
// which accompanies this distribution. The full text of the license may be found at | |
// http://opensource.org/licenses/bsd-license.php | |
// | |
// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
// | |
// | |
#include <AutoGen.h> | |
INCLUDE AsmMacroIoLib.inc | |
IMPORT CEntryPoint | |
IMPORT ArmPlatformGetCorePosition | |
IMPORT ArmPlatformIsPrimaryCore | |
IMPORT ArmReadMpidr | |
IMPORT ArmPlatformPeiBootAction | |
EXPORT _ModuleEntryPoint | |
PRESERVE8 | |
AREA PrePeiCoreEntryPoint, CODE, READONLY | |
StartupAddr DCD CEntryPoint | |
_ModuleEntryPoint | |
// Do early platform specific actions | |
bl ArmPlatformPeiBootAction | |
// Identify CPU ID | |
bl ArmReadMpidr | |
// Keep a copy of the MpId register value | |
mov r5, r0 | |
// Is it the Primary Core ? | |
bl 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 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, StartupAddr | |
// 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 | |
END |