projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| afa99fac GL |
1 | /*++ @file\r |
| 2 | Temp RAM PPI\r | |
| 3 | \r | |
| 4 | Copyright (c) 2011, Apple Inc. 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 <PiPei.h>\r | |
| 16 | #include <Library/DebugLib.h>\r | |
| 17 | #include <Library/BaseMemoryLib.h>\r | |
| 18 | \r | |
| 19 | #include <Ppi/TemporaryRamSupport.h>\r | |
| 20 | \r | |
| 21 | VOID\r | |
| 22 | EFIAPI\r | |
| 23 | SecSwitchStack (\r | |
| 24 | UINT32 TemporaryMemoryBase,\r | |
| 25 | UINT32 PermenentMemoryBase\r | |
| 26 | );\r | |
| 27 | \r | |
| 28 | \r | |
| 29 | EFI_STATUS\r | |
| 30 | EFIAPI\r | |
| 31 | SecTemporaryRamSupport (\r | |
| 32 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
| 33 | IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r | |
| 34 | IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r | |
| 35 | IN UINTN CopySize\r | |
| 36 | )\r | |
| 37 | {\r | |
| 38 | //\r | |
| 39 | // Migrate the whole temporary memory to permanent memory.\r | |
| 40 | //\r | |
| 41 | CopyMem (\r | |
| 42 | (VOID*)(UINTN)PermanentMemoryBase,\r | |
| 43 | (VOID*)(UINTN)TemporaryMemoryBase,\r | |
| 44 | CopySize\r | |
| 45 | );\r | |
| 46 | \r | |
| 47 | //\r | |
| 48 | // SecSwitchStack function must be invoked after the memory migration\r | |
| 49 | // immediately, also we need fixup the stack change caused by new call into\r | |
| 50 | // permanent memory.\r | |
| 51 | //\r | |
| 52 | SecSwitchStack ((UINT32) TemporaryMemoryBase, (UINT32) PermanentMemoryBase);\r | |
| 53 | \r | |
| 54 | //\r | |
| 55 | // We need *not* fix the return address because currently,\r | |
| 56 | // The PeiCore is executed in flash.\r | |
| 57 | //\r | |
| 58 | \r | |
| 59 | //\r | |
| 60 | // Simulate to invalid temporary memory, terminate temporary memory\r | |
| 61 | //\r | |
| 62 | //ZeroMem ((VOID*)(UINTN)TemporaryMemoryBase, CopySize);\r | |
| 63 | \r | |
| 64 | return EFI_SUCCESS;\r | |
| 65 | }\r |