2 // Copyright (c) 2011, ARM Limited. All rights reserved.
4 // This program and the accompanying materials
5 // are licensed and made available under the terms and conditions of the BSD License
6 // which accompanies this distribution. The full text of the license may be found at
7 // http://opensource.org/licenses/bsd-license.php
9 // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14 #include <AsmMacroIoLib.h>
16 #include <Library/PcdLib.h>
22 GCC_ASM_IMPORT(CEntryPoint)
23 GCC_ASM_IMPORT(ArmReadMpidr)
24 GCC_ASM_EXPORT(_ModuleEntryPoint)
26 StartupAddr: .word CEntryPoint
28 ASM_PFX(_ModuleEntryPoint):
30 bl ASM_PFX(ArmReadMpidr)
31 // Get ID of this CPU in Multicore system
32 LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCoreMask), r1)
36 # Setup Stack for the 4 CPU cores
37 LoadConstantToReg (FixedPcdGet32(PcdCPUCoresNonSecStackBase), r1)
38 LoadConstantToReg (FixedPcdGet32(PcdCPUCoresNonSecStackSize), r2)
40 mov r3,r0 @ r3 = core_id
41 mul r3,r3,r2 @ r3 = core_id * stack_size = offset from the stack base
42 add r3,r3,r1 @ r3 = stack_base + offset
43 add r3,r3,r2,LSR #1 @ r3 = stack_offset + (stack_size/2) <-- the top half is for the heap
46 # Only allocate memory in top of the primary core stack
50 _AllocateGlobalPeiVariables:
51 # Reserve top of the stack for Global PEI Variables (eg: PeiServicesTablePointer)
52 LoadConstantToReg (FixedPcdGet32(PcdPeiGlobalVariableSize), r1)
56 # The PEI Core Entry Point has been computed by GenFV and stored in the second entry of the Reset Vector
57 LoadConstantToReg (FixedPcdGet32(PcdNormalFvBaseAddress), r2)
61 # move sec startup address into a data register
62 # ensure we're jumping to FV version of the code (not boot remapped alias)
65 # jump to PrePeiCore C code
67 # r1 = pei_core_address