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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 |