projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| c2efc4b0 | 1 | /** @file\r |
| 48557c65 | 2 | EBC-specific functionality for DxeLoad.\r |
| c2efc4b0 | 3 | \r |
| cd5ebaa0 HT |
4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| 5 | This program and the accompanying materials\r | |
| c2efc4b0 | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | which accompanies this distribution. The full text of the license may be found at\r | |
| 8 | http://opensource.org/licenses/bsd-license.php\r | |
| 9 | \r | |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | \r | |
| 13 | **/\r | |
| 14 | \r | |
| 15 | #include "DxeIpl.h"\r | |
| 16 | \r | |
| 17 | \r | |
| 18 | \r | |
| 19 | /**\r | |
| 20 | Transfers control to DxeCore.\r | |
| 21 | \r | |
| 22 | This function performs a CPU architecture specific operations to execute\r | |
| 23 | the entry point of DxeCore with the parameters of HobList.\r | |
| 48557c65 | 24 | It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r |
| c2efc4b0 | 25 | \r |
| 48557c65 | 26 | @param DxeCoreEntryPoint The entry point of DxeCore.\r |
| c2efc4b0 | 27 | @param HobList The start of HobList passed to DxeCore.\r |
| 28 | \r | |
| 29 | **/\r | |
| 30 | VOID\r | |
| 31 | HandOffToDxeCore (\r | |
| 32 | IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,\r | |
| 33 | IN EFI_PEI_HOB_POINTERS HobList\r | |
| 34 | )\r | |
| 35 | {\r | |
| 36 | VOID *BaseOfStack;\r | |
| 37 | VOID *TopOfStack;\r | |
| 38 | EFI_STATUS Status;\r | |
| 39 | \r | |
| 40 | //\r | |
| 41 | // Allocate 128KB for the Stack\r | |
| 42 | //\r | |
| 43 | BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));\r | |
| 44 | ASSERT (BaseOfStack != NULL);\r | |
| 45 | \r | |
| 46 | //\r | |
| 47 | // Compute the top of the stack we were allocated. Pre-allocate a UINTN\r | |
| 48 | // for safety.\r | |
| 49 | //\r | |
| 50 | TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);\r | |
| 51 | TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);\r | |
| 52 | \r | |
| 53 | //\r | |
| 48557c65 | 54 | // End of PEI phase signal\r |
| c2efc4b0 | 55 | //\r |
| 56 | Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);\r | |
| 57 | ASSERT_EFI_ERROR (Status);\r | |
| 58 | \r | |
| 59 | //\r | |
| 60 | // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.\r | |
| 61 | // \r | |
| 62 | UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, STACK_SIZE);\r | |
| 63 | \r | |
| 64 | //\r | |
| 65 | // Transfer the control to the entry point of DxeCore.\r | |
| 66 | //\r | |
| 67 | SwitchStack (\r | |
| 68 | (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,\r | |
| 69 | HobList.Raw,\r | |
| 70 | NULL,\r | |
| 71 | TopOfStack\r | |
| 72 | );\r | |
| 73 | }\r |