projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| e1f414b6 | 1 | /** @file\r |
| 2 | IA-32/x64 AsmEnablePaging64()\r | |
| 3 | \r | |
| bb817c56 | 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| 9344f092 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| e1f414b6 | 6 | \r |
| e1f414b6 | 7 | **/\r |
| 8 | \r | |
| 1efcc4ae | 9 | \r |
| f734a10a | 10 | \r |
| e1f414b6 | 11 | \r |
| 12 | #include "BaseLibInternals.h"\r | |
| 13 | \r | |
| 14 | /**\r | |
| 15 | Enables the 64-bit paging mode on the CPU.\r | |
| 16 | \r | |
| 17 | Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables\r | |
| 18 | must be properly initialized prior to calling this service. This function\r | |
| 19 | assumes the current execution mode is 32-bit protected mode with flat\r | |
| 20 | descriptors. This function is only available on IA-32. After the 64-bit\r | |
| 21 | paging mode is enabled, control is transferred to the function specified by\r | |
| 22 | EntryPoint using the new stack specified by NewStack and passing in the\r | |
| 23 | parameters specified by Context1 and Context2. Context1 and Context2 are\r | |
| 24 | optional and may be 0. The function EntryPoint must never return.\r | |
| 25 | \r | |
| 26 | If the current execution mode is not 32-bit protected mode with flat\r | |
| 27 | descriptors, then ASSERT().\r | |
| 28 | If EntryPoint is 0, then ASSERT().\r | |
| 29 | If NewStack is 0, then ASSERT().\r | |
| 30 | \r | |
| 31 | @param Cs The 16-bit selector to load in the CS before EntryPoint\r | |
| 32 | is called. The descriptor in the GDT that this selector\r | |
| 33 | references must be setup for long mode.\r | |
| 34 | @param EntryPoint The 64-bit virtual address of the function to call with\r | |
| 35 | the new stack after paging is enabled.\r | |
| 36 | @param Context1 The 64-bit virtual address of the context to pass into\r | |
| 37 | the EntryPoint function as the first parameter after\r | |
| 38 | paging is enabled.\r | |
| 39 | @param Context2 The 64-bit virtual address of the context to pass into\r | |
| 40 | the EntryPoint function as the second parameter after\r | |
| 41 | paging is enabled.\r | |
| 42 | @param NewStack The 64-bit virtual address of the new stack to use for\r | |
| 43 | the EntryPoint function after paging is enabled.\r | |
| 44 | \r | |
| 45 | **/\r | |
| 46 | VOID\r | |
| 47 | EFIAPI\r | |
| 48 | AsmEnablePaging64 (\r | |
| 49 | IN UINT16 Cs,\r | |
| 50 | IN UINT64 EntryPoint,\r | |
| d0e2f823 MK |
51 | IN UINT64 Context1 OPTIONAL,\r |
| 52 | IN UINT64 Context2 OPTIONAL,\r | |
| e1f414b6 | 53 | IN UINT64 NewStack\r |
| 54 | )\r | |
| 55 | {\r | |
| 56 | ASSERT (EntryPoint != 0);\r | |
| 57 | ASSERT (NewStack != 0);\r | |
| 58 | InternalX86EnablePaging64 (Cs, EntryPoint, Context1, Context2, NewStack);\r | |
| 59 | }\r |