| | 1 | /** @file\r |
| | 2 | EBC-specific functionality for DxeLoad.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | This program and the accompanying materials\r |
| | 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 |
| | 24 | It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r |
| | 25 | \r |
| | 26 | @param DxeCoreEntryPoint The entry point of DxeCore.\r |
| | 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 |
| | 54 | // End of PEI phase signal\r |
| | 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 |
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