projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| cf1d4549 JY |
1 | ;; @file\r |
| 2 | ; Provide FSP API entry points.\r | |
| 3 | ;\r | |
| 00aa71ce | 4 | ; Copyright (c) 2016 - 2022, Intel Corporation. All rights reserved.<BR>\r |
| 9672cd30 | 5 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| cf1d4549 JY |
6 | ;;\r |
| 7 | \r | |
| 8 | SECTION .text\r | |
| 9 | \r | |
| 00aa71ce TK |
10 | STACK_SAVED_EAX_OFFSET EQU 4 * 7 ; size of a general purpose register * eax index\r |
| 11 | \r | |
| cf1d4549 JY |
12 | ;\r |
| 13 | ; Following functions will be provided in C\r | |
| 14 | ;\r | |
| 15 | extern ASM_PFX(Loader2PeiSwitchStack)\r | |
| 16 | extern ASM_PFX(FspApiCallingCheck)\r | |
| 17 | \r | |
| 18 | ;\r | |
| 19 | ; Following functions will be provided in ASM\r | |
| 20 | ;\r | |
| 21 | extern ASM_PFX(FspApiCommonContinue)\r | |
| 22 | extern ASM_PFX(AsmGetFspInfoHeader)\r | |
| 23 | \r | |
| 24 | ;----------------------------------------------------------------------------\r | |
| 25 | ; FspApiCommon API\r | |
| 26 | ;\r | |
| 27 | ; This is the FSP API common entry point to resume the FSP execution\r | |
| 28 | ;\r | |
| 29 | ;----------------------------------------------------------------------------\r | |
| 30 | global ASM_PFX(FspApiCommon)\r | |
| 31 | ASM_PFX(FspApiCommon):\r | |
| 32 | ;\r | |
| 33 | ; EAX holds the API index\r | |
| 34 | ;\r | |
| 35 | \r | |
| 36 | ;\r | |
| 37 | ; Stack must be ready\r | |
| 38 | ;\r | |
| 39 | push eax\r | |
| 40 | add esp, 4\r | |
| 41 | cmp eax, dword [esp - 4]\r | |
| 42 | jz FspApiCommon1\r | |
| 43 | mov eax, 080000003h\r | |
| 44 | jmp exit\r | |
| 45 | \r | |
| 46 | FspApiCommon1:\r | |
| 47 | ;\r | |
| 48 | ; Verify the calling condition\r | |
| 49 | ;\r | |
| 50 | pushad\r | |
| 51 | push DWORD [esp + (4 * 8 + 4)] ; push ApiParam\r | |
| 52 | push eax ; push ApiIdx\r | |
| 53 | call ASM_PFX(FspApiCallingCheck)\r | |
| 54 | add esp, 8\r | |
| 55 | cmp eax, 0\r | |
| 56 | jz FspApiCommon2\r | |
| 00aa71ce | 57 | mov dword [esp + STACK_SAVED_EAX_OFFSET], eax\r |
| cf1d4549 JY |
58 | popad\r |
| 59 | exit:\r | |
| 60 | ret\r | |
| 61 | \r | |
| 62 | FspApiCommon2:\r | |
| 63 | popad\r | |
| 64 | cmp eax, 3 ; FspMemoryInit API\r | |
| 65 | jz FspApiCommon3\r | |
| 66 | \r | |
| f2cdb268 CC |
67 | cmp eax, 6 ; FspMultiPhaseSiInitApiIndex API\r |
| 68 | jz FspApiCommon3\r | |
| 69 | \r | |
| 3d35a6c2 CC |
70 | cmp eax, 8 ; FspMultiPhaseMemInitApiIndex API\r |
| 71 | jz FspApiCommon3\r | |
| 72 | \r | |
| cf1d4549 JY |
73 | call ASM_PFX(AsmGetFspInfoHeader)\r |
| 74 | jmp ASM_PFX(Loader2PeiSwitchStack)\r | |
| 75 | \r | |
| 76 | FspApiCommon3:\r | |
| 77 | jmp ASM_PFX(FspApiCommonContinue)\r | |
| 78 | \r |