1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2015 Toomas Soome <tsoome@me.com> 14 */ 15 16 #ifndef _LINUX_H 17 #define _LINUX_H 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 #ifndef ASM_FILE 24 /* For the Linux/i386 boot protocol version 2.10. */ 25 struct linux_kernel_header 26 { 27 uint8_t code1[0x0020]; 28 uint16_t cl_magic; /* Magic number 0xA33F */ 29 uint16_t cl_offset; /* The offset of command line */ 30 uint8_t code2[0x01F1 - 0x0020 - 2 - 2]; 31 uint8_t setup_sects; /* The size of the setup in sectors */ 32 uint16_t root_flags; /* If the root is mounted readonly */ 33 uint16_t syssize; /* obsolete */ 34 uint16_t swap_dev; /* obsolete */ 35 uint16_t ram_size; /* obsolete */ 36 uint16_t vid_mode; /* Video mode control */ 37 uint16_t root_dev; /* Default root device number */ 38 uint16_t boot_flag; /* 0xAA55 magic number */ 39 uint16_t jump; /* Jump instruction */ 40 uint32_t header; /* Magic signature "HdrS" */ 41 uint16_t version; /* Boot protocol version supported */ 42 uint32_t realmode_swtch; /* Boot loader hook */ 43 uint16_t start_sys; /* The load-low segment (obsolete) */ 44 uint16_t kernel_version; /* Points to kernel version string */ 45 uint8_t type_of_loader; /* Boot loader identifier */ 46 uint8_t loadflags; /* Boot protocol option flags */ 47 uint16_t setup_move_size; /* Move to high memory size */ 48 uint32_t code32_start; /* Boot loader hook */ 49 uint32_t ramdisk_image; /* initrd load address */ 50 uint32_t ramdisk_size; /* initrd size */ 51 uint32_t bootsect_kludge; /* obsolete */ 52 uint16_t heap_end_ptr; /* Free memory after setup end */ 53 uint16_t pad1; /* Unused */ 54 uint32_t cmd_line_ptr; /* Points to the kernel command line */ 55 uint32_t initrd_addr_max; /* Highest address for initrd */ 56 uint32_t kernel_alignment; 57 uint8_t relocatable; 58 uint8_t min_alignment; 59 uint8_t pad[2]; 60 uint32_t cmdline_size; 61 uint32_t hardware_subarch; 62 uint64_t hardware_subarch_data; 63 uint32_t payload_offset; 64 uint32_t payload_length; 65 uint64_t setup_data; 66 uint64_t pref_address; 67 uint32_t init_size; 68 } __attribute__ ((packed)); 69 #endif 70 71 #define LINUX_VID_MODE_NORMAL 0xFFFF 72 #define LINUX_VID_MODE_EXTENDED 0xFFFE 73 #define LINUX_VID_MODE_ASK 0xFFFD 74 75 #define BOOTSEC_SIGNATURE 0xAA55 76 #define LINUX_BOOT_LOADER_TYPE 0x72 77 #define LINUX_BZIMAGE_ADDR 0x100000 78 #define LINUX_CL_END_OFFSET 0x90FF 79 #define LINUX_CL_MAGIC 0xA33F 80 #define LINUX_CL_OFFSET 0x9000 81 #define LINUX_DEFAULT_SETUP_SECTS 4 82 #define LINUX_ESP 0x9000 83 #define LINUX_FLAG_BIG_KERNEL 0x1 84 #define LINUX_FLAG_CAN_USE_HEAP 0x80 85 #define LINUX_HEAP_END_OFFSET (0x9000 - 0x200) 86 #define LINUX_MAGIC_SIGNATURE 0x53726448 87 #define LINUX_MAX_SETUP_SECTS 64 88 #define LINUX_OLD_REAL_MODE_ADDR 0x90000 89 #define LINUX_SETUP_MOVE_SIZE 0x9100 90 #define LINUX_ZIMAGE_ADDR 0x10000 91 #define LINUX_INITRD_MAX_ADDRESS 0x38000000 92 93 #ifdef __cplusplus 94 } 95 #endif 96 97 #endif /* _LINUX_H */ 98