diff options
Diffstat (limited to 'ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm')
| -rw-r--r-- | ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm b/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm index e214ed3744..e4eb612610 100644 --- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm +++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.asm @@ -19,6 +19,7 @@ INCLUDE AsmMacroIoLib.inc
IMPORT CEntryPoint
+ IMPORT ArmReadMpidr
EXPORT _ModuleEntryPoint
PRESERVE8
@@ -28,8 +29,10 @@ StartupAddr DCD CEntryPoint _ModuleEntryPoint
// Identify CPU ID
- mrc p15, 0, r0, c0, c0, 5
- and r0, #0xf
+ bl ArmReadMpidr
+ // Get ID of this CPU in Multicore system
+ LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCoreMask), r1)
+ and r0, r0, r1
_SetupStack
// Setup Stack for the 4 CPU cores
@@ -62,7 +65,7 @@ _PrepareArguments ldr r2, StartupAddr
// jump to PrePeiCore C code
- // r0 = core_id
+ // r0 = mp_id
// r1 = pei_core_address
blx r2
|