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ArmPlatformPkg/ArmPlatformLib: Introduce ArmPlatformSecBootAction function

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This function is called at the initial stage of the Secure boot process to allow
platform vendors to add early actions.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12413 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-09-22 23:02:13 +00:00
parent 0787bc6184
commit 44e272fd6a
7 changed files with 82 additions and 8 deletions
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12
ArmPlatformPkg/Sec/SecEntryPoint.S
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@@ -30,6 +30,7 @@ GCC_ASM_EXPORT(_ModuleEntryPoint)
#global functions referenced by this module
GCC_ASM_IMPORT(CEntryPoint)
GCC_ASM_IMPORT(ArmPlatformSecBootAction)
GCC_ASM_IMPORT(ArmPlatformIsMemoryInitialized)
GCC_ASM_IMPORT(ArmPlatformInitializeBootMemory)
GCC_ASM_IMPORT(ArmDisableInterrupts)
@@ -46,16 +47,19 @@ StartupAddr: .word ASM_PFX(CEntryPoint)
SecVectorTableAddr: .word ASM_PFX(SecVectorTable)
ASM_PFX(_ModuleEntryPoint):
#Set VBAR to the start of the exception vectors in Secure Mode
ldr r0, SecVectorTableAddr
bl ASM_PFX(ArmWriteVBar)
# First ensure all interrupts are disabled
bl ASM_PFX(ArmDisableInterrupts)
# Ensure that the MMU and caches are off
bl ASM_PFX(ArmDisableCachesAndMmu)
# Jump to Platform Specific Boot Action function
blx ASM_PFX(ArmPlatformSecBootAction)
# Set VBAR to the start of the exception vectors in Secure Mode
ldr r0, =SecVectorTable
bl ASM_PFX(ArmWriteVBar)
_IdentifyCpu:
# Identify CPU ID
bl ASM_PFX(ArmReadMpidr)