VOID
CEntryPoint (
IN UINTN MpId,
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINTN GlobalVariableBase
)
{
UINT64 StartTimeStamp;
ASSERT(!ArmIsMpCore() || (PcdGet32 (PcdCoreCount) > 1));
// Initialize the platform specific controllers
ArmPlatformInitialize (MpId);
if (ArmPlatformIsPrimaryCore (MpId) && PerformanceMeasurementEnabled ()) {
// Initialize the Timer Library to setup the Timer HW controller
TimerConstructor ();
// We cannot call yet the PerformanceLib because the HOB List has not been initialized
StartTimeStamp = GetPerformanceCounter ();
} else {
StartTimeStamp = 0;
}
// Data Cache enabled on Primary core when MMU is enabled.
ArmDisableDataCache ();
// Invalidate Data cache
ArmInvalidateDataCache ();
// Invalidate instruction cache
ArmInvalidateInstructionCache ();
// Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
// Define the Global Variable region when we are not running in XIP
if (!IS_XIP()) {
if (ArmPlatformIsPrimaryCore (MpId)) {
mGlobalVariableBase = GlobalVariableBase;
if (ArmIsMpCore()) {
// Signal the Global Variable Region is defined (event: ARM_CPU_EVENT_DEFAULT)
ArmCallSEV ();
}
} else {
// Wait the Primay core has defined the address of the Global Variable region (event: ARM_CPU_EVENT_DEFAULT)
ArmCallWFE ();
}
}
// If not primary Jump to Secondary Main
if (ArmPlatformIsPrimaryCore (MpId)) {
// Goto primary Main.
PrimaryMain (UefiMemoryBase, StacksBase, GlobalVariableBase, StartTimeStamp);
} else {
SecondaryMain (MpId);
}
// DXE Core should always load and never return
ASSERT (FALSE);
}
VOID
TrustedWorldInitialization (
IN UINTN MpId,
IN UINTN SecBootMode
)
{
UINTN JumpAddress;
//-------------------- Monitor Mode ---------------------
// Set up Monitor World (Vector Table, etc)
ArmSecureMonitorWorldInitialize ();
// Transfer the interrupt to Non-secure World
ArmGicSetupNonSecure (MpId, PcdGet32(PcdGicDistributorBase), PcdGet32(PcdGicInterruptInterfaceBase));
// Initialize platform specific security policy
ArmPlatformSecTrustzoneInit (MpId);
// Setup the Trustzone Chipsets
if (SecBootMode == ARM_SEC_COLD_BOOT) {
if (ArmPlatformIsPrimaryCore (MpId)) {
if (ArmIsMpCore()) {
// Signal the secondary core the Security settings is done (event: EVENT_SECURE_INIT)
ArmCallSEV ();
}
} else {
// The secondary cores need to wait until the Trustzone chipsets configuration is done
// before switching to Non Secure World
// Wait for the Primary Core to finish the initialization of the Secure World (event: EVENT_SECURE_INIT)
ArmCallWFE ();
}
}
// Call the Platform specific function to execute additional actions if required
JumpAddress = PcdGet32 (PcdFvBaseAddress);
ArmPlatformSecExtraAction (MpId, &JumpAddress);
// Initialize architecture specific security policy
ArmSecArchTrustzoneInit ();
// CP15 Secure Configuration Register
ArmWriteScr (PcdGet32 (PcdArmScr));
NonTrustedWorldTransition (MpId, JumpAddress);
}
