projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 |
| 9d510e61 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 31f228cf | 8 | \r |
| 9 | **/\r | |
| 10 | \r | |
| 11 | #include "DxeIpl.h"\r | |
| 12 | \r | |
| 5db1cce1 | 13 | #include <Library/ArmMmuLib.h>\r |
| c82b8087 | 14 | \r |
| 31f228cf | 15 | /**\r |
| 16 | Transfers control to DxeCore.\r | |
| 17 | \r | |
| 18 | This function performs a CPU architecture specific operations to execute\r | |
| 19 | the entry point of DxeCore with the parameters of HobList.\r | |
| 20 | It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r | |
| 21 | \r | |
| 22 | @param DxeCoreEntryPoint The entry point of DxeCore.\r | |
| 23 | @param HobList The start of HobList passed to DxeCore.\r | |
| 24 | \r | |
| 25 | **/\r | |
| 26 | VOID\r | |
| 27 | HandOffToDxeCore (\r | |
| 1436aea4 MK |
28 | IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,\r |
| 29 | IN EFI_PEI_HOB_POINTERS HobList\r | |
| 31f228cf | 30 | )\r |
| 31 | {\r | |
| 1436aea4 MK |
32 | VOID *BaseOfStack;\r |
| 33 | VOID *TopOfStack;\r | |
| 34 | EFI_STATUS Status;\r | |
| 31f228cf | 35 | \r |
| 36 | //\r | |
| 37 | // Allocate 128KB for the Stack\r | |
| 38 | //\r | |
| 39 | BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));\r | |
| 40 | ASSERT (BaseOfStack != NULL);\r | |
| 41 | \r | |
| c82b8087 AB |
42 | if (PcdGetBool (PcdSetNxForStack)) {\r |
| 43 | Status = ArmSetMemoryRegionNoExec ((UINTN)BaseOfStack, STACK_SIZE);\r | |
| 44 | ASSERT_EFI_ERROR (Status);\r | |
| 45 | }\r | |
| 46 | \r | |
| 31f228cf | 47 | //\r |
| 48 | // Compute the top of the stack we were allocated. Pre-allocate a UINTN\r | |
| 49 | // for safety.\r | |
| 50 | //\r | |
| 1436aea4 | 51 | TopOfStack = (VOID *)((UINTN)BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);\r |
| 31f228cf | 52 | TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);\r |
| 53 | \r | |
| 54 | //\r | |
| 55 | // End of PEI phase singal\r | |
| 56 | //\r | |
| 57 | Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);\r | |
| 58 | ASSERT_EFI_ERROR (Status);\r | |
| 59 | \r | |
| 60 | //\r | |
| 61 | // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.\r | |
| d1102dba | 62 | //\r |
| 1436aea4 | 63 | UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN)BaseOfStack, STACK_SIZE);\r |
| 31f228cf | 64 | \r |
| 65 | SwitchStack (\r | |
| 66 | (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,\r | |
| 67 | HobList.Raw,\r | |
| 68 | NULL,\r | |
| 69 | TopOfStack\r | |
| 70 | );\r | |
| 71 | }\r |