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31f228cf | 1 | /** @file\r |
d1102dba LG |
2 | ARM specifc functionality for DxeLoad.\r |
3 | \r | |
4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
cd5ebaa0 | 5 | Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
31f228cf | 6 | \r |
cd5ebaa0 | 7 | This program and the accompanying materials\r |
31f228cf | 8 | are licensed and made available under the terms and conditions of the BSD License\r |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "DxeIpl.h"\r | |
18 | \r | |
5db1cce1 | 19 | #include <Library/ArmMmuLib.h>\r |
c82b8087 | 20 | \r |
31f228cf | 21 | /**\r |
22 | Transfers control to DxeCore.\r | |
23 | \r | |
24 | This function performs a CPU architecture specific operations to execute\r | |
25 | the entry point of DxeCore with the parameters of HobList.\r | |
26 | It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r | |
27 | \r | |
28 | @param DxeCoreEntryPoint The entry point of DxeCore.\r | |
29 | @param HobList The start of HobList passed to DxeCore.\r | |
30 | \r | |
31 | **/\r | |
32 | VOID\r | |
33 | HandOffToDxeCore (\r | |
34 | IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,\r | |
35 | IN EFI_PEI_HOB_POINTERS HobList\r | |
36 | )\r | |
37 | {\r | |
38 | VOID *BaseOfStack;\r | |
39 | VOID *TopOfStack;\r | |
40 | EFI_STATUS Status;\r | |
41 | \r | |
42 | //\r | |
43 | // Allocate 128KB for the Stack\r | |
44 | //\r | |
45 | BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));\r | |
46 | ASSERT (BaseOfStack != NULL);\r | |
47 | \r | |
c82b8087 AB |
48 | if (PcdGetBool (PcdSetNxForStack)) {\r |
49 | Status = ArmSetMemoryRegionNoExec ((UINTN)BaseOfStack, STACK_SIZE);\r | |
50 | ASSERT_EFI_ERROR (Status);\r | |
51 | }\r | |
52 | \r | |
31f228cf | 53 | //\r |
54 | // Compute the top of the stack we were allocated. Pre-allocate a UINTN\r | |
55 | // for safety.\r | |
56 | //\r | |
57 | TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);\r | |
58 | TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);\r | |
59 | \r | |
60 | //\r | |
61 | // End of PEI phase singal\r | |
62 | //\r | |
63 | Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);\r | |
64 | ASSERT_EFI_ERROR (Status);\r | |
65 | \r | |
66 | //\r | |
67 | // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.\r | |
d1102dba | 68 | //\r |
31f228cf | 69 | UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, STACK_SIZE);\r |
70 | \r | |
71 | SwitchStack (\r | |
72 | (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,\r | |
73 | HobList.Raw,\r | |
74 | NULL,\r | |
75 | TopOfStack\r | |
76 | );\r | |
77 | }\r |