arch/riscv/include/asm/image.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _ASM_RISCV_IMAGE_H
   4 #define _ASM_RISCV_IMAGE_H
   5
   6 #define RISCV_IMAGE_MAGIC       "RISCV\0\0\0"
   7 #define RISCV_IMAGE_MAGIC2      "RSC\x05"
   8
   9 #define RISCV_IMAGE_FLAG_BE_SHIFT       0
  10 #define RISCV_IMAGE_FLAG_BE_MASK        0x1
  11
  12 #define RISCV_IMAGE_FLAG_LE             0
  13 #define RISCV_IMAGE_FLAG_BE             1
  14
  15 #ifdef CONFIG_CPU_BIG_ENDIAN
  16 #error conversion of header fields to LE not yet implemented
  17 #else
  18 #define __HEAD_FLAG_BE          RISCV_IMAGE_FLAG_LE
  19 #endif
  20
  21 #define __HEAD_FLAG(field)      (__HEAD_FLAG_##field << \
  22                                 RISCV_IMAGE_FLAG_##field##_SHIFT)
  23
  24 #define __HEAD_FLAGS            (__HEAD_FLAG(BE))
  25
  26 #define RISCV_HEADER_VERSION_MAJOR 0
  27 #define RISCV_HEADER_VERSION_MINOR 2
  28
  29 #define RISCV_HEADER_VERSION (RISCV_HEADER_VERSION_MAJOR << 16 | \
  30                               RISCV_HEADER_VERSION_MINOR)
  31
  32 #ifndef __ASSEMBLY__
  33 /**
  34  * struct riscv_image_header - riscv kernel image header
  35  * @code0:              Executable code
  36  * @code1:              Executable code
  37  * @text_offset:        Image load offset (little endian)
  38  * @image_size:         Effective Image size (little endian)
  39  * @flags:              kernel flags (little endian)
  40  * @version:            version
  41  * @res1:               reserved
  42  * @res2:               reserved
  43  * @magic:              Magic number (RISC-V specific; deprecated)
  44  * @magic2:             Magic number 2 (to match the ARM64 'magic' field pos)
  45  * @res3:               reserved (will be used for PE COFF offset)
  46  *
  47  * The intention is for this header format to be shared between multiple
  48  * architectures to avoid a proliferation of image header formats.
  49  */
  50
  51 struct riscv_image_header {
  52         u32 code0;
  53         u32 code1;
  54         u64 text_offset;
  55         u64 image_size;
  56         u64 flags;
  57         u32 version;
  58         u32 res1;
  59         u64 res2;
  60         u64 magic;
  61         u32 magic2;
  62         u32 res3;
  63 };
  64 #endif /* __ASSEMBLY__ */
  65 #endif /* _ASM_RISCV_IMAGE_H */