47a8e12fe1
The size of this memory is controlled by a PCD. The Global Variable in this regsion are defined by their offset. This memory region can be use to store the PEI Services Table Pointer. Update the PeiServicesTablePointerLib to use this region instead of PcdPeiServicePtrAddr. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11803 6f19259b-4bc3-4df7-8a09-765794883524
72 lines
2.2 KiB
ArmAsm
72 lines
2.2 KiB
ArmAsm
//
|
|
// Copyright (c) 2011, 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 <AsmMacroIoLib.h>
|
|
#include <Base.h>
|
|
#include <Library/PcdLib.h>
|
|
#include <AutoGen.h>
|
|
|
|
.text
|
|
.align 3
|
|
|
|
#global symbols referenced by this module
|
|
GCC_ASM_IMPORT(CEntryPoint)
|
|
|
|
StartupAddr: .word CEntryPoint
|
|
|
|
#make _ModuleEntryPoint as global
|
|
GCC_ASM_EXPORT(_ModuleEntryPoint)
|
|
|
|
|
|
ASM_PFX(_ModuleEntryPoint):
|
|
# Identify CPU ID
|
|
mrc p15, 0, r0, c0, c0, 5
|
|
and r0, #0xf
|
|
|
|
_SetupStack:
|
|
# Setup Stack for the 4 CPU cores
|
|
LoadConstantToReg (FixedPcdGet32(PcdCPUCoresNonSecStackBase) ,r1)
|
|
LoadConstantToReg (FixedPcdGet32(PcdCPUCoresNonSecStackSize) ,r2)
|
|
|
|
mov r3,r0 @ r3 = core_id
|
|
mul r3,r3,r2 @ r3 = core_id * stack_size = offset from the stack base
|
|
add r3,r3,r1 @ r3 = stack_base + offset
|
|
add r3,r3,r2,LSR #1 @ r3 = stack_offset + (stack_size/2) <-- the top half is for the heap
|
|
mov sp, r3
|
|
|
|
# Only allocate memory in top of the primary core stack
|
|
cmp r0, #0
|
|
bne _PrepareArguments
|
|
|
|
_AllocateGlobalPeiVariables:
|
|
# Reserve top of the stack for Global PEI Variables (eg: PeiServicesTablePointer)
|
|
LoadConstantToReg (FixedPcdGet32(PcdPeiGlobalVariableSize), r1)
|
|
sub sp, sp, r1
|
|
|
|
_PrepareArguments:
|
|
# The PEI Core Entry Point has been computed by GenFV and stored in the second entry of the Reset Vector
|
|
LoadConstantToReg (FixedPcdGet32(PcdNormalFdBaseAddress), r2)
|
|
add r2, r2, #4
|
|
ldr r1, [r2]
|
|
|
|
# move sec startup address into a data register
|
|
# ensure we're jumping to FV version of the code (not boot remapped alias)
|
|
ldr r2, StartupAddr
|
|
|
|
# jump to PrePeiCore C code
|
|
# r0 = core_id
|
|
# r1 = pei_core_address
|
|
blx r2
|
|
|
|
.end
|