2 ARM specifc functionality for DxeLoad.
4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
5 Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 #include <Library/ArmLib.h>
22 Transfers control to DxeCore.
24 This function performs a CPU architecture specific operations to execute
25 the entry point of DxeCore with the parameters of HobList.
26 It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
28 @param DxeCoreEntryPoint The entry point of DxeCore.
29 @param HobList The start of HobList passed to DxeCore.
34 IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint
,
35 IN EFI_PEI_HOB_POINTERS HobList
43 // Allocate 128KB for the Stack
45 BaseOfStack
= AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE
));
46 ASSERT (BaseOfStack
!= NULL
);
48 if (PcdGetBool (PcdSetNxForStack
)) {
49 Status
= ArmSetMemoryRegionNoExec ((UINTN
)BaseOfStack
, STACK_SIZE
);
50 ASSERT_EFI_ERROR (Status
);
54 // Compute the top of the stack we were allocated. Pre-allocate a UINTN
57 TopOfStack
= (VOID
*) ((UINTN
) BaseOfStack
+ EFI_SIZE_TO_PAGES (STACK_SIZE
) * EFI_PAGE_SIZE
- CPU_STACK_ALIGNMENT
);
58 TopOfStack
= ALIGN_POINTER (TopOfStack
, CPU_STACK_ALIGNMENT
);
61 // End of PEI phase singal
63 Status
= PeiServicesInstallPpi (&gEndOfPeiSignalPpi
);
64 ASSERT_EFI_ERROR (Status
);
67 // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.
69 UpdateStackHob ((EFI_PHYSICAL_ADDRESS
)(UINTN
) BaseOfStack
, STACK_SIZE
);
72 (SWITCH_STACK_ENTRY_POINT
)(UINTN
)DxeCoreEntryPoint
,