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.
15 #include <AsmMacroIoLib.h>
17 #include <Library/PcdLib.h>
18 #include <Library/ArmPlatformLib.h>
20 INCLUDE AsmMacroIoLib.inc
23 IMPORT ArmPlatformSecBootAction
24 IMPORT ArmPlatformInitializeBootMemory
25 IMPORT ArmDisableInterrupts
26 IMPORT ArmDisableCachesAndMmu
30 EXPORT _ModuleEntryPoint
32 #if (FixedPcdGet32(PcdMPCoreSupport))
37 AREA SecEntryPoint, CODE, READONLY
39 StartupAddr DCD CEntryPoint
42 // First ensure all interrupts are disabled
43 blx ArmDisableInterrupts
45 // Ensure that the MMU and caches are off
46 blx ArmDisableCachesAndMmu
48 // Jump to Platform Specific Boot Action function
49 blx ArmPlatformSecBootAction
51 // Set VBAR to the start of the exception vectors in Secure Mode
52 ldr r0, =SecVectorTable
58 // Get ID of this CPU in Multicore system
59 LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCoreMask), r1)
62 // Is it the Primary Core ?
63 LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCore), r1)
65 // Only the primary core initialize the memory (SMC)
68 #if (FixedPcdGet32(PcdMPCoreSupport))
69 // ... The secondary cores wait for SCU to be enabled
73 beq _WaitForEnabledScu
78 // Initialize Init Boot Memory
79 bl ArmPlatformInitializeBootMemory
81 // Only Primary CPU could run this line (the secondary cores have jumped from _IdentifyCpu to _SetupStack)
85 // Setup Stack for the 4 CPU cores
86 //Read Stack Base address from PCD
87 LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)
89 // Read Stack size from PCD
90 LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecStackSize), r2)
92 // Calcuate Stack Pointer reg value using Stack size and CPU ID.
93 mov r3,r5 // r3 = core_id
94 mul r3,r3,r2 // r3 = core_id * stack_size = offset from the stack base
95 add r3,r3,r1 // r3 = stack_base + offset
98 // Move sec startup address into a data register
99 // ensure we're jumping to FV version of the code (not boot remapped alias)
102 // Jump to SEC C code