1 /* 2 * Copright (C) 2014 - 2015 Linaro Ltd. 3 * Author: Ard Biesheuvel <ard.biesheuvel@linaro.org> 4 * Copright (C) 2017 Lemote Co. 5 * Author: Heiher <r@hev.cc> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice and this list of conditions, without modification. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * Alternatively, this software may be distributed under the terms of the 16 * GNU General Public License as published by the Free Software Foundation; 17 * either version 2 of the License, or (at your option) any later version. 18 */ 19 20 #if !defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L ) && !defined(__cplusplus) 21 22 // ANSI C 1999/2000 stdint.h integer width declarations 23 24 typedef unsigned long uint64_t; 25 typedef long int64_t; 26 typedef unsigned int uint32_t; 27 typedef int int32_t; 28 typedef unsigned short uint16_t; 29 typedef short int16_t; 30 typedef unsigned char uint8_t; 31 typedef signed char int8_t; // unqualified 'char' is unsigned on ARM 32 typedef uint64_t uintptr_t; 33 typedef int64_t intptr_t; 34 35 #else 36 #include <stdint.h> 37 #endif 38 39 // 40 // Basic EFI types of various widths 41 // 42 43 #include <stddef.h> 44 45 typedef wchar_t CHAR16; 46 #define WCHAR CHAR16 47 48 typedef uint64_t UINT64; 49 typedef int64_t INT64; 50 51 typedef uint32_t UINT32; 52 typedef int32_t INT32; 53 54 typedef uint16_t UINT16; 55 typedef int16_t INT16; 56 57 typedef uint8_t UINT8; 58 typedef char CHAR8; 59 typedef int8_t INT8; 60 61 #undef VOID 62 typedef void VOID; 63 64 typedef int64_t INTN; 65 typedef uint64_t UINTN; 66 67 #define EFIERR(a) (0x8000000000000000 | a) 68 #define EFI_ERROR_MASK 0x8000000000000000 69 #define EFIERR_OEM(a) (0xc000000000000000 | a) 70 71 #define BAD_POINTER 0xFBFBFBFBFBFBFBFB 72 #define MAX_ADDRESS 0xFFFFFFFFFFFFFFFF 73 74 #define BREAKPOINT() while (TRUE); // Make it hang on Bios[Dbg]32 75 76 // 77 // Pointers must be aligned to these address to function 78 // 79 80 #define MIN_ALIGNMENT_SIZE 8 81 82 #define ALIGN_VARIABLE(Value ,Adjustment) \ 83 (UINTN)Adjustment = 0; \ 84 if((UINTN)Value % MIN_ALIGNMENT_SIZE) \ 85 (UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \ 86 Value = (UINTN)Value + (UINTN)Adjustment 87 88 89 // 90 // Define macros to build data structure signatures from characters. 91 // 92 93 #define EFI_SIGNATURE_16(A,B) ((A) | (B<<8)) 94 #define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16)) 95 #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)) 96 97 // 98 // EFIAPI - prototype calling convention for EFI function pointers 99 // BOOTSERVICE - prototype for implementation of a boot service interface 100 // RUNTIMESERVICE - prototype for implementation of a runtime service interface 101 // RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service 102 // RUNTIME_CODE - pragma macro for declaring runtime code 103 // 104 105 #ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options 106 #define EFIAPI // Substitute expresion to force C calling convention 107 #endif 108 109 #define BOOTSERVICE 110 #define RUNTIMESERVICE 111 #define RUNTIMEFUNCTION 112 113 114 #define RUNTIME_CODE(a) alloc_text("rtcode", a) 115 #define BEGIN_RUNTIME_DATA() data_seg("rtdata") 116 #define END_RUNTIME_DATA() data_seg("") 117 118 #define VOLATILE volatile 119 120 #define MEMORY_FENCE __sync_synchronize 121 122 // 123 // When build similiar to FW, then link everything together as 124 // one big module. 125 // 126 127 #define EFI_DRIVER_ENTRY_POINT(InitFunction) \ 128 UINTN \ 129 InitializeDriver ( \ 130 VOID *ImageHandle, \ 131 VOID *SystemTable \ 132 ) \ 133 { \ 134 return InitFunction(ImageHandle, \ 135 SystemTable); \ 136 } \ 137 \ 138 EFI_STATUS efi_main( \ 139 EFI_HANDLE image, \ 140 EFI_SYSTEM_TABLE *systab \ 141 ) __attribute__((weak, \ 142 alias ("InitializeDriver"))); 143 144 #define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \ 145 (_if)->LoadInternal(type, name, entry) 146 147 148 // 149 // Some compilers don't support the forward reference construct: 150 // typedef struct XXXXX 151 // 152 // The following macro provide a workaround for such cases. 153 154 #define INTERFACE_DECL(x) struct x 155 156 #define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__) 157 #define EFI_FUNCTION 158 159 static inline UINT64 swap_uint64 (UINT64 v) 160 { 161 asm volatile ( 162 "dsbh %[v], %[v] \n\t" 163 "dshd %[v], %[v] \n\t" 164 :[v]"+r"(v) 165 ); 166 167 return v; 168 } 169