1 /* 2 * Copright (C) 2014 - 2015 Linaro Ltd. 3 * Author: Ard Biesheuvel <ard.biesheuvel@linaro.org> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice and this list of conditions, without modification. 10 * 2. The name of the author may not be used to endorse or promote products 11 * derived from this software without specific prior written permission. 12 * 13 * Alternatively, this software may be distributed under the terms of the 14 * GNU General Public License as published by the Free Software Foundation; 15 * either version 2 of the License, or (at your option) any later version. 16 */ 17 18 #if !defined(_MSC_VER) && (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L )) && !defined(__cplusplus) 19 20 // ANSI C 1999/2000 stdint.h integer width declarations 21 22 typedef unsigned long uint64_t; 23 typedef long int64_t; 24 typedef unsigned int uint32_t; 25 typedef int int32_t; 26 typedef unsigned short uint16_t; 27 typedef short int16_t; 28 typedef unsigned char uint8_t; 29 typedef signed char int8_t; // unqualified 'char' is unsigned on ARM 30 typedef uint64_t uintptr_t; 31 typedef int64_t intptr_t; 32 33 #else 34 #include <stdint.h> 35 #endif 36 37 // 38 // Basic EFI types of various widths 39 // 40 41 #include <stddef.h> 42 43 typedef wchar_t CHAR16; 44 #define WCHAR CHAR16 45 46 typedef uint64_t UINT64; 47 typedef int64_t INT64; 48 49 typedef uint32_t UINT32; 50 typedef int32_t INT32; 51 52 typedef uint16_t UINT16; 53 typedef int16_t INT16; 54 55 typedef uint8_t UINT8; 56 typedef char CHAR8; 57 typedef int8_t INT8; 58 59 #undef VOID 60 typedef void VOID; 61 62 typedef int64_t INTN; 63 typedef uint64_t UINTN; 64 65 #define EFIERR(a) (0x8000000000000000 | a) 66 #define EFI_ERROR_MASK 0x8000000000000000 67 #define EFIERR_OEM(a) (0xc000000000000000 | a) 68 69 #define BAD_POINTER 0xFBFBFBFBFBFBFBFB 70 #define MAX_ADDRESS 0xFFFFFFFFFFFFFFFF 71 72 #define BREAKPOINT() while (TRUE); // Make it hang on Bios[Dbg]32 73 74 // 75 // Pointers must be aligned to these address to function 76 // 77 78 #define MIN_ALIGNMENT_SIZE 8 79 80 #define ALIGN_VARIABLE(Value ,Adjustment) \ 81 (UINTN)Adjustment = 0; \ 82 if((UINTN)Value % MIN_ALIGNMENT_SIZE) \ 83 (UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \ 84 Value = (UINTN)Value + (UINTN)Adjustment 85 86 87 // 88 // Define macros to build data structure signatures from characters. 89 // 90 91 #define EFI_SIGNATURE_16(A,B) ((A) | (B<<8)) 92 #define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16)) 93 #define EFI_SIGNATURE_64(A,B,C,D,E,F,G,H) (EFI_SIGNATURE_32(A,B,C,D) | ((UINT64)(EFI_SIGNATURE_32(E,F,G,H)) << 32)) 94 95 // 96 // EFIAPI - prototype calling convention for EFI function pointers 97 // BOOTSERVICE - prototype for implementation of a boot service interface 98 // RUNTIMESERVICE - prototype for implementation of a runtime service interface 99 // RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service 100 // RUNTIME_CODE - pragma macro for declaring runtime code 101 // 102 103 #ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options 104 #define EFIAPI // Substitute expresion to force C calling convention 105 #endif 106 107 #define BOOTSERVICE 108 #define RUNTIMESERVICE 109 #define RUNTIMEFUNCTION 110 111 112 #define RUNTIME_CODE(a) alloc_text("rtcode", a) 113 #define BEGIN_RUNTIME_DATA() data_seg("rtdata") 114 #define END_RUNTIME_DATA() data_seg("") 115 116 #define VOLATILE volatile 117 118 #define MEMORY_FENCE __sync_synchronize 119 120 // 121 // When build similiar to FW, then link everything together as 122 // one big module. For the MSVC toolchain, we simply tell the 123 // linker what our driver init function is using /ENTRY. 124 // 125 #if defined(_MSC_EXTENSIONS) 126 #define EFI_DRIVER_ENTRY_POINT(InitFunction) \ 127 __pragma(comment(linker, "/ENTRY:" # InitFunction)) 128 #else 129 #define EFI_DRIVER_ENTRY_POINT(InitFunction) \ 130 UINTN \ 131 InitializeDriver ( \ 132 VOID *ImageHandle, \ 133 VOID *SystemTable \ 134 ) \ 135 { \ 136 return InitFunction(ImageHandle, \ 137 SystemTable); \ 138 } \ 139 \ 140 EFI_STATUS efi_main( \ 141 EFI_HANDLE image, \ 142 EFI_SYSTEM_TABLE *systab \ 143 ) __attribute__((weak, \ 144 alias ("InitializeDriver"))); 145 #endif 146 147 #define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \ 148 (_if)->LoadInternal(type, name, entry) 149 150 151 // 152 // Some compilers don't support the forward reference construct: 153 // typedef struct XXXXX 154 // 155 // The following macro provide a workaround for such cases. 156 157 #define INTERFACE_DECL(x) struct x 158 159 #define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__) 160 #define EFI_FUNCTION 161