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 | |
| 4 | # This program and the accompanying materials\r | |
| 5 | # are licensed and made available under the terms and conditions of the BSD License\r | |
| 6 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 7 | # http://opensource.org/licenses/bsd-license.php.\r | |
| 8 | #\r | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | #\r | |
| 12 | # Abstract:\r | |
| 13 | #\r | |
| 14 | # Provide FSP helper function.\r | |
| 15 | #\r | |
| 16 | #------------------------------------------------------------------------------\r | |
| 17 | \r | |
| f0abe42f JY |
18 | #\r |
| 19 | # FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress \r | |
| 20 | # from the FSP Info header. \r | |
| 21 | #\r | |
| 9da59186 JY |
22 | ASM_GLOBAL ASM_PFX(FspInfoHeaderRelativeOff)\r |
| 23 | ASM_PFX(FspInfoHeaderRelativeOff):\r | |
| 24 | #\r | |
| 25 | # This value will be pached by the build script\r | |
| 26 | #\r | |
| 27 | .long 0x012345678\r | |
| 28 | \r | |
| f0abe42f JY |
29 | #\r |
| 30 | # Returns FSP Base Address. \r | |
| 31 | #\r | |
| 32 | # This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure\r | |
| 33 | #\r | |
| 16b7e82c JY |
34 | ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddress)\r |
| 35 | ASM_PFX(AsmGetFspBaseAddress):\r | |
| 36 | mov $AsmGetFspBaseAddress, %eax\r | |
| f0abe42f | 37 | sub FspInfoHeaderRelativeOff, %eax\r |
| 9da59186 JY |
38 | add $0x01C, %eax\r |
| 39 | mov (%eax), %eax\r | |
| 40 | ret\r | |
| 41 | \r | |
| f0abe42f JY |
42 | #\r |
| 43 | # No stack counter part of AsmGetFspBaseAddress. Return address is in edi.\r | |
| 44 | #\r | |
| 45 | ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddressNoStack)\r | |
| 46 | ASM_PFX(AsmGetFspBaseAddressNoStack):\r | |
| 47 | mov $AsmGetFspBaseAddress, %eax\r | |
| 48 | sub FspInfoHeaderRelativeOff, %eax\r | |
| 49 | add $0x01C, %eax \r | |
| 50 | mov (%eax), %eax\r | |
| 51 | jmp *%edi\r | |
| 52 | \r | |
| 53 | #\r | |
| 54 | # Returns FSP Info Header. \r | |
| 55 | #\r | |
| 56 | # This function gets the FSP Info Header using relative addressing and returns it\r | |
| 57 | #\r | |
| 16b7e82c JY |
58 | ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeader)\r |
| 59 | ASM_PFX(AsmGetFspInfoHeader):\r | |
| 60 | mov $AsmGetFspBaseAddress, %eax\r | |
| f0abe42f | 61 | sub FspInfoHeaderRelativeOff, %eax\r |
| 3b17b245 | 62 | ret\r |
| f0abe42f JY |
63 | \r |
| 64 | #\r | |
| 65 | # No stack counter part of AsmGetFspInfoHeader. Return address is in edi.\r | |
| 66 | #\r | |
| 67 | ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeaderNoStack)\r | |
| 68 | ASM_PFX(AsmGetFspInfoHeaderNoStack):\r | |
| 69 | mov $AsmGetFspBaseAddress, %eax\r | |
| 70 | sub FspInfoHeaderRelativeOff, %eax\r | |
| 71 | jmp *%edi\r |