projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9da59186 JY |
1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| 3 | # Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
| 16a16ea6 | 4 | # SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 9da59186 JY |
5 | #\r |
| 6 | # Abstract:\r | |
| 7 | #\r | |
| 8 | # Provide FSP helper function.\r | |
| 9 | #\r | |
| 10 | #------------------------------------------------------------------------------\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 | |
| 9da59186 JY |
16 | ASM_GLOBAL ASM_PFX(FspInfoHeaderRelativeOff)\r |
| 17 | ASM_PFX(FspInfoHeaderRelativeOff):\r | |
| 18 | #\r | |
| 19 | # This value will be pached by the build script\r | |
| 20 | #\r | |
| 21 | .long 0x012345678\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 | ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddress)\r |
| 29 | ASM_PFX(AsmGetFspBaseAddress):\r | |
| 30 | mov $AsmGetFspBaseAddress, %eax\r | |
| f0abe42f | 31 | sub FspInfoHeaderRelativeOff, %eax\r |
| 9da59186 JY |
32 | add $0x01C, %eax\r |
| 33 | mov (%eax), %eax\r | |
| 34 | ret\r | |
| 35 | \r | |
| f0abe42f JY |
36 | #\r |
| 37 | # No stack counter part of AsmGetFspBaseAddress. Return address is in edi.\r | |
| 38 | #\r | |
| 39 | ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddressNoStack)\r | |
| 40 | ASM_PFX(AsmGetFspBaseAddressNoStack):\r | |
| 41 | mov $AsmGetFspBaseAddress, %eax\r | |
| 42 | sub FspInfoHeaderRelativeOff, %eax\r | |
| 43 | add $0x01C, %eax \r | |
| 44 | mov (%eax), %eax\r | |
| 45 | jmp *%edi\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 | ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeader)\r |
| 53 | ASM_PFX(AsmGetFspInfoHeader):\r | |
| 54 | mov $AsmGetFspBaseAddress, %eax\r | |
| f0abe42f | 55 | sub FspInfoHeaderRelativeOff, %eax\r |
| 3b17b245 | 56 | ret\r |
| f0abe42f JY |
57 | \r |
| 58 | #\r | |
| 59 | # No stack counter part of AsmGetFspInfoHeader. Return address is in edi.\r | |
| 60 | #\r | |
| 61 | ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeaderNoStack)\r | |
| 62 | ASM_PFX(AsmGetFspInfoHeaderNoStack):\r | |
| 63 | mov $AsmGetFspBaseAddress, %eax\r | |
| 64 | sub FspInfoHeaderRelativeOff, %eax\r | |
| 65 | jmp *%edi\r |