128 lines
4.8 KiB
C
128 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause */
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/*
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* Copyright (C) 2014 - 2015 Linaro Ltd.
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice and this list of conditions, without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or (at your option) any later version.
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*/
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#include <stdint.h>
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#include <stddef.h>
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//
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// Basic EFI types of various widths
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//
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typedef uint64_t UINT64;
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typedef int64_t INT64;
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typedef uint32_t UINT32;
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typedef int32_t INT32;
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typedef uint16_t UINT16;
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typedef int16_t INT16;
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typedef uint8_t UINT8;
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typedef int8_t INT8;
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typedef unsigned char CHAR8;
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typedef uint16_t CHAR16;
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#define WCHAR CHAR16
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#undef VOID
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typedef void VOID;
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typedef int64_t INTN;
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typedef uint64_t UINTN;
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#define EFI_ERROR_MASK 0x8000000000000000
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#define EFIERR(a) (EFI_ERROR_MASK | a)
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#define EFIERR_OEM(a) (0xc000000000000000 | a)
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#define BAD_POINTER 0xFBFBFBFBFBFBFBFB
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#define MAX_ADDRESS 0xFFFFFFFFFFFFFFFF
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#define BREAKPOINT() while(1);
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//
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// Pointers must be aligned to these address to function
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//
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#define MIN_ALIGNMENT_SIZE 8
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#define ALIGN_VARIABLE(Value, Adjustment) \
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(UINTN)Adjustment = 0; \
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if((UINTN)Value % MIN_ALIGNMENT_SIZE) \
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(UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \
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Value = (UINTN)Value + (UINTN)Adjustment
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//
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// Define macros to build data structure signatures from characters.
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//
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#define EFI_SIGNATURE_16(A,B) ((A) | (B<<8))
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#define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16))
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#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))
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//
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// EFIAPI - prototype calling convention for EFI function pointers
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// BOOTSERVICE - prototype for implementation of a boot service interface
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// RUNTIMESERVICE - prototype for implementation of a runtime service interface
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// RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service
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// RUNTIME_CODE - pragma macro for declaring runtime code
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//
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#ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options
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#define EFIAPI // Substitute expresion to force C calling convention
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#endif
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#define BOOTSERVICE
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#define RUNTIMESERVICE
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#define RUNTIMEFUNCTION
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#define RUNTIME_CODE(a) alloc_text("rtcode", a)
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#define BEGIN_RUNTIME_DATA() data_seg("rtdata")
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#define END_RUNTIME_DATA() data_seg("")
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#define VOLATILE volatile
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#define MEMORY_FENCE __sync_synchronize
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//
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// When build similiar to FW, then link everything together as
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// one big module. For the MSVC toolchain, we simply tell the
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// linker what our driver init function is using /ENTRY.
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//
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#if defined(_MSC_EXTENSIONS)
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#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
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__pragma(comment(linker, "/ENTRY:" # InitFunction))
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#else
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#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
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UINTN \
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InitializeDriver ( \
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VOID *ImageHandle, \
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VOID *SystemTable \
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) \
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{ \
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return InitFunction(ImageHandle, \
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SystemTable); \
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} \
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\
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EFI_STATUS efi_main( \
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EFI_HANDLE image, \
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EFI_SYSTEM_TABLE *systab \
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) __attribute__((weak, \
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alias ("InitializeDriver")));
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#endif
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#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
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(_if)->LoadInternal(type, name, entry)
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//
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// Some compilers don't support the forward reference construct:
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// typedef struct XXXXX
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//
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// The following macro provide a workaround for such cases.
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#define INTERFACE_DECL(x) struct x
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#define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__)
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#define EFI_FUNCTION
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