1 #------------------------------------------------------------------------------ 2 # 3 # Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> 4 # This program and the accompanying materials 5 # are licensed and made available under the terms and conditions of the BSD License 6 # which accompanies this distribution. The full text of the license may be found at 7 # http://opensource.org/licenses/bsd-license.php. 8 # 9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 # 12 # Abstract: 13 # 14 # Provide FSP helper function. 15 # 16 #------------------------------------------------------------------------------ 17 18 # 19 # FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress 20 # from the FSP Info header. 21 # 22 ASM_GLOBAL ASM_PFX(FspInfoHeaderRelativeOff) 23 ASM_PFX(FspInfoHeaderRelativeOff): 24 # 25 # This value will be pached by the build script 26 # 27 .long 0x012345678 28 29 # 30 # Returns FSP Base Address. 31 # 32 # This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure 33 # 34 ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddress) 35 ASM_PFX(AsmGetFspBaseAddress): 36 mov $AsmGetFspBaseAddress, %eax 37 sub FspInfoHeaderRelativeOff, %eax 38 add $0x01C, %eax 39 mov (%eax), %eax 40 ret 41 42 # 43 # No stack counter part of AsmGetFspBaseAddress. Return address is in edi. 44 # 45 ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddressNoStack) 46 ASM_PFX(AsmGetFspBaseAddressNoStack): 47 mov $AsmGetFspBaseAddress, %eax 48 sub FspInfoHeaderRelativeOff, %eax 49 add $0x01C, %eax 50 mov (%eax), %eax 51 jmp *%edi 52 53 # 54 # Returns FSP Info Header. 55 # 56 # This function gets the FSP Info Header using relative addressing and returns it 57 # 58 ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeader) 59 ASM_PFX(AsmGetFspInfoHeader): 60 mov $AsmGetFspBaseAddress, %eax 61 sub FspInfoHeaderRelativeOff, %eax 62 ret 63 64 # 65 # No stack counter part of AsmGetFspInfoHeader. Return address is in edi. 66 # 67 ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeaderNoStack) 68 ASM_PFX(AsmGetFspInfoHeaderNoStack): 69 mov $AsmGetFspBaseAddress, %eax 70 sub FspInfoHeaderRelativeOff, %eax 71 jmp *%edi 72
