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 long uint64_t; 23 typedef long 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 uint32_t uintptr_t; 31 typedef int32_t intptr_t; 32 33 #else 34 #include <stdint.h> 35 #endif 36 37 /* 38 * This prevents GCC from emitting GOT based relocations, and use R_ARM_REL32 39 * relative relocations instead, which are more suitable for static binaries. 40 */ 41 #ifdef __GNUC__ 42 #pragma GCC visibility push (hidden) 43 #endif 44 45 // 46 // Basic EFI types of various widths 47 // 48 49 #ifndef __WCHAR_TYPE__ 50 # define __WCHAR_TYPE__ short 51 #endif 52 53 typedef uint64_t UINT64; 54 typedef int64_t INT64; 55 56 typedef uint32_t UINT32; 57 typedef int32_t INT32; 58 59 typedef uint16_t UINT16; 60 typedef int16_t INT16; 61 typedef uint8_t UINT8; 62 typedef int8_t INT8; 63 typedef __WCHAR_TYPE__ WCHAR; 64 65 #undef VOID 66 #define VOID void 67 68 typedef int32_t INTN; 69 typedef uint32_t UINTN; 70 71 #define EFIERR(a) (0x80000000 | a) 72 #define EFI_ERROR_MASK 0x80000000 73 #define EFIERR_OEM(a) (0xc0000000 | a) 74 75 #define BAD_POINTER 0xFBFBFBFB 76 #define MAX_ADDRESS 0xFFFFFFFF 77 78 #define BREAKPOINT() while (TRUE); 79 80 // 81 // Pointers must be aligned to these address to function 82 // 83 84 #define MIN_ALIGNMENT_SIZE 4 85 86 #define ALIGN_VARIABLE(Value ,Adjustment) \ 87 (UINTN)Adjustment = 0; \ 88 if((UINTN)Value % MIN_ALIGNMENT_SIZE) \ 89 (UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \ 90 Value = (UINTN)Value + (UINTN)Adjustment 91 92 93 // 94 // Define macros to build data structure signatures from characters. 95 // 96 97 #define EFI_SIGNATURE_16(A,B) ((A) | (B<<8)) 98 #define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16)) 99 #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)) 100 101 // 102 // EFIAPI - prototype calling convention for EFI function pointers 103 // BOOTSERVICE - prototype for implementation of a boot service interface 104 // RUNTIMESERVICE - prototype for implementation of a runtime service interface 105 // RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service 106 // RUNTIME_CODE - pragma macro for declaring runtime code 107 // 108 109 #ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options 110 #define EFIAPI // Substitute expresion to force C calling convention 111 #endif 112 113 #define BOOTSERVICE 114 #define RUNTIMESERVICE 115 #define RUNTIMEFUNCTION 116 117 118 #define RUNTIME_CODE(a) alloc_text("rtcode", a) 119 #define BEGIN_RUNTIME_DATA() data_seg("rtdata") 120 #define END_RUNTIME_DATA() data_seg("") 121 122 #define VOLATILE volatile 123 124 #define MEMORY_FENCE __sync_synchronize 125 126 // 127 // When build similiar to FW, then link everything together as 128 // one big module. For the MSVC toolchain, we simply tell the 129 // linker what our driver init function is using /ENTRY. 130 // 131 #if defined(_MSC_EXTENSIONS) 132 #define EFI_DRIVER_ENTRY_POINT(InitFunction) \ 133 __pragma(comment(linker, "/ENTRY:" # InitFunction)) 134 #else 135 #define EFI_DRIVER_ENTRY_POINT(InitFunction) \ 136 UINTN \ 137 InitializeDriver ( \ 138 VOID *ImageHandle, \ 139 VOID *SystemTable \ 140 ) \ 141 { \ 142 return InitFunction(ImageHandle, \ 143 SystemTable); \ 144 } \ 145 \ 146 EFI_STATUS efi_main( \ 147 EFI_HANDLE image, \ 148 EFI_SYSTEM_TABLE *systab \ 149 ) __attribute__((weak, \ 150 alias ("InitializeDriver"))); 151 #endif 152 153 #define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \ 154 (_if)->LoadInternal(type, name, entry) 155 156 157 // 158 // Some compilers don't support the forward reference construct: 159 // typedef struct XXXXX 160 // 161 // The following macro provide a workaround for such cases. 162 163 #define INTERFACE_DECL(x) struct x 164 165 #define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__) 166 #define EFI_FUNCTION 167