2 // Copyright (c) 2011-2013, 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.
15 #include <AsmMacroIoLib.h>
16 #include "SecInternal.h"
18 INCLUDE AsmMacroIoLib.inc
21 IMPORT ArmPlatformIsPrimaryCore
22 IMPORT ArmPlatformGetCorePosition
23 IMPORT ArmPlatformSecBootAction
24 IMPORT ArmPlatformSecBootMemoryInit
25 IMPORT ArmDisableInterrupts
26 IMPORT ArmDisableCachesAndMmu
29 EXPORT _ModuleEntryPoint
32 AREA SecEntryPoint, CODE, READONLY
34 StartupAddr DCD CEntryPoint
36 _ModuleEntryPoint FUNCTION
37 // First ensure all interrupts are disabled
38 bl ArmDisableInterrupts
40 // Ensure that the MMU and caches are off
41 bl ArmDisableCachesAndMmu
43 // By default, we are doing a cold boot
44 mov r10, #ARM_SEC_COLD_BOOT
46 // Jump to Platform Specific Boot Action function
47 blx ArmPlatformSecBootAction
52 // Keep a copy of the MpId register value
55 // Is it the Primary Core ?
56 bl ArmPlatformIsPrimaryCore
58 // Only the primary core initialize the memory (SMC)
62 // If we are not doing a cold boot in this case we should assume the Initial Memory to be already initialized
63 // Otherwise we have to wait the Primary Core to finish the initialization
64 cmp r10, #ARM_SEC_COLD_BOOT
65 bne _SetupSecondaryCoreStack
67 // Wait for the primary core to initialize the initial memory (event: BOOT_MEM_INIT)
69 // Now the Init Mem is initialized, we setup the secondary core stacks
70 b _SetupSecondaryCoreStack
73 // If we are not doing a cold boot in this case we should assume the Initial Memory to be already initialized
74 cmp r10, #ARM_SEC_COLD_BOOT
75 bne _SetupPrimaryCoreStack
77 // Initialize Init Boot Memory
78 bl ArmPlatformSecBootMemoryInit
80 _SetupPrimaryCoreStack
81 // Get the top of the primary stacks (and the base of the secondary stacks)
82 LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)
83 LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)
86 LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), r2)
88 // The reserved space for global variable must be 8-bytes aligned for pushing
89 // 64-bit variable on the stack
90 SetPrimaryStack (r1, r2, r3)
93 _SetupSecondaryCoreStack
94 // Get the top of the primary stacks (and the base of the secondary stacks)
95 LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)
96 LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)
99 // Get the Core Position
101 bl ArmPlatformGetCorePosition
102 // The stack starts at the top of the stack region. Add '1' to the Core Position to get the top of the stack
105 // StackOffset = CorePos * StackSize
106 LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecSecondaryStackSize), r2)
108 // SP = StackBase + StackOffset
112 // Move sec startup address into a data register
113 // Ensure we're jumping to FV version of the code (not boot remapped alias)
116 // Jump to SEC C code