projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9da59186 JY |
1 | ;; @file\r |
| 2 | ; Provide FSP helper function.\r | |
| 3 | ;\r | |
| 4 | ; Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
| 16a16ea6 | 5 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 9da59186 JY |
6 | ;;\r |
| 7 | \r | |
| 8 | .586p\r | |
| 9 | .model flat,C\r | |
| 10 | .code\r | |
| 11 | \r | |
| f0abe42f JY |
12 | ;\r |
| 13 | ; FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress \r | |
| 14 | ; from the FSP Info header. \r | |
| 15 | ;\r | |
| 3b17b245 | 16 | FspInfoHeaderRelativeOff PROC NEAR PUBLIC\r |
| 9da59186 JY |
17 | ;\r |
| 18 | ; This value will be pached by the build script\r | |
| 19 | ;\r | |
| 20 | DD 012345678h\r | |
| 21 | FspInfoHeaderRelativeOff ENDP\r | |
| 22 | \r | |
| f0abe42f JY |
23 | ;\r |
| 24 | ; Returns FSP Base Address. \r | |
| 25 | ;\r | |
| 26 | ; This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure\r | |
| 27 | ;\r | |
| 16b7e82c JY |
28 | AsmGetFspBaseAddress PROC NEAR PUBLIC\r |
| 29 | mov eax, AsmGetFspBaseAddress\r | |
| 9da59186 JY |
30 | sub eax, dword ptr [FspInfoHeaderRelativeOff]\r |
| 31 | add eax, 01Ch\r | |
| 32 | mov eax, dword ptr [eax]\r | |
| 33 | ret\r | |
| 16b7e82c | 34 | AsmGetFspBaseAddress ENDP\r |
| 9da59186 | 35 | \r |
| f0abe42f JY |
36 | ;\r |
| 37 | ; No stack counter part of AsmGetFspBaseAddress. Return address is in edi.\r | |
| 38 | ;\r | |
| 39 | AsmGetFspBaseAddressNoStack PROC NEAR PUBLIC\r | |
| 40 | mov eax, AsmGetFspBaseAddress\r | |
| 41 | sub eax, dword ptr [FspInfoHeaderRelativeOff]\r | |
| 42 | add eax, 01Ch \r | |
| 43 | mov eax, dword ptr [eax]\r | |
| 44 | jmp edi\r | |
| 45 | AsmGetFspBaseAddressNoStack ENDP\r | |
| 46 | \r | |
| 47 | ;\r | |
| 48 | ; Returns FSP Info Header. \r | |
| 49 | ;\r | |
| 50 | ; This function gets the FSP Info Header using relative addressing and returns it\r | |
| 51 | ;\r | |
| 16b7e82c JY |
52 | AsmGetFspInfoHeader PROC NEAR PUBLIC\r |
| 53 | mov eax, AsmGetFspBaseAddress\r | |
| 3b17b245 MM |
54 | sub eax, dword ptr [FspInfoHeaderRelativeOff]\r |
| 55 | ret\r | |
| 16b7e82c | 56 | AsmGetFspInfoHeader ENDP\r |
| 3b17b245 | 57 | \r |
| f0abe42f JY |
58 | ;\r |
| 59 | ; No stack counter part of AsmGetFspInfoHeader. Return address is in edi.\r | |
| 60 | ;\r | |
| 61 | AsmGetFspInfoHeaderNoStack PROC NEAR PUBLIC\r | |
| 62 | mov eax, AsmGetFspBaseAddress\r | |
| 63 | sub eax, dword ptr [FspInfoHeaderRelativeOff]\r | |
| 64 | jmp edi\r | |
| 65 | AsmGetFspInfoHeaderNoStack ENDP\r | |
| 66 | \r | |
| 9da59186 | 67 | END |