| 1 | #ifndef ELF_BOOT_H
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| 2 | #define ELF_BOOT_H
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| 3 |
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| 4 |
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| 5 | /* This defines the structure of a table of parameters useful for ELF
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| 6 | * bootable images. These parameters are all passed and generated
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| 7 | * by the bootloader to the booted image. For simplicity and
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| 8 | * consistency the Elf Note format is reused.
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| 9 | *
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| 10 | * All of the information must be Position Independent Data.
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| 11 | * That is it must be safe to relocate the whole ELF boot parameter
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| 12 | * block without changing the meaning or correctnes of the data.
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| 13 | * Additionally it must be safe to permute the order of the ELF notes
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| 14 | * to any possible permutation without changing the meaning or correctness
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| 15 | * of the data.
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| 16 | *
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| 17 | */
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| 18 |
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| 19 | #define ELF_BHDR_MAGIC 0x0E1FB007
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| 20 |
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| 21 | #ifndef ASSEMBLY
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| 22 | #include <stdint.h>
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| 23 | typedef uint16_t Elf_Half;
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| 24 | typedef uint32_t Elf_Word;
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| 25 |
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| 26 | typedef struct Elf_Bhdr
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| 27 | {
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| 28 | Elf_Word b_signature; /* "0x0E1FB007" */
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| 29 | Elf_Word b_size;
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| 30 | Elf_Half b_checksum;
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| 31 | Elf_Half b_records;
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| 32 | } Elf_Bhdr;
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| 33 |
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| 34 | typedef struct Elf_Nhdr
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| 35 | {
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| 36 | Elf_Word n_namesz; /* Length of the note's name. */
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| 37 | Elf_Word n_descsz; /* Length of the note's descriptor. */
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| 38 | Elf_Word n_type; /* Type of the note. */
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| 39 | } Elf_Nhdr;
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| 40 |
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| 41 | #endif /* ASSEMBLY */
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| 42 |
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| 43 | /* Standardized Elf image notes for booting... The name for all of these is ELFBoot */
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| 44 | #define ELF_NOTE_BOOT "ELFBoot"
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| 45 |
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| 46 | #define EIN_PROGRAM_NAME 0x00000001
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| 47 | /* The program in this ELF file */
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| 48 | #define EIN_PROGRAM_VERSION 0x00000002
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| 49 | /* The version of the program in this ELF file */
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| 50 | #define EIN_PROGRAM_CHECKSUM 0x00000003
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| 51 | /* ip style checksum of the memory image. */
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| 52 |
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| 53 |
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| 54 | /* Notes that are passed to a loaded image */
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| 55 | /* For standard notes n_namesz must be zero */
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| 56 | #define EBN_FIRMWARE_TYPE 0x00000001
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| 57 | /* ASCIZ name of the platform firmware. */
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| 58 | #define EBN_BOOTLOADER_NAME 0x00000002
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| 59 | /* This specifies just the ASCIZ name of the bootloader */
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| 60 | #define EBN_BOOTLOADER_VERSION 0x00000003
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| 61 | /* This specifies the version of the bootloader as an ASCIZ string */
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| 62 | #define EBN_COMMAND_LINE 0x00000004
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| 63 | /* This specifies a command line that can be set by user interaction,
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| 64 | * and is provided as a free form ASCIZ string to the loaded image.
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| 65 | */
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| 66 | #define EBN_NOP 0x00000005
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| 67 | /* A note nop note has no meaning, useful for inserting explicit padding */
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| 68 | #define EBN_LOADED_IMAGE 0x00000006
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| 69 | /* An ASCIZ string naming the loaded image */
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| 70 |
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| 71 |
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| 72 | /* Etherboot specific notes */
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| 73 | #define EB_PARAM_NOTE "Etherboot"
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| 74 | #define EB_IA64_SYSTAB 0x00000001
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| 75 | #define EB_IA64_MEMMAP 0x00000002
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| 76 | #define EB_IA64_FPSWA 0x00000003
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| 77 | #define EB_IA64_CONINFO 0x00000004
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| 78 | #define EB_BOOTP_DATA 0x00000005
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| 79 | #define EB_HEADER 0x00000006
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| 80 | #define EB_IA64_IMAGE_HANDLE 0x00000007
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| 81 | #define EB_I386_MEMMAP 0x00000008
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| 82 |
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| 83 |
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| 84 | #endif /* ELF_BOOT_H */
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