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Diffstat (limited to 'util/mkelfImage/include/elf_boot.h')
| -rw-r--r-- | util/mkelfImage/include/elf_boot.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/util/mkelfImage/include/elf_boot.h b/util/mkelfImage/include/elf_boot.h new file mode 100644 index 0000000000..f90013ffa8 --- /dev/null +++ b/util/mkelfImage/include/elf_boot.h @@ -0,0 +1,105 @@ +#ifndef ELF_BOOT_H +#define ELF_BOOT_H + + +/* This defines the structure of a table of parameters useful for ELF + * bootable images. These parameters are all passed and generated + * by the bootloader to the booted image. For simplicity and + * consistency the Elf Note format is reused. + * + * All of the information must be Position Independent Data. + * That is it must be safe to relocate the whole ELF boot parameter + * block without changing the meaning or correctnes of the data. + * Additionally it must be safe to permute the order of the ELF notes + * to any possible permutation without changing the meaning or correctness + * of the data. + * + */ + +#define ELF_BHDR_MAGIC 0x0E1FB007 + +#ifndef ASSEMBLY +#include <stdint.h> +typedef uint16_t Elf_Half; +typedef uint32_t Elf_Word; + +/* + * Elf boot notes... + */ + +typedef struct Elf_Bhdr +{ + Elf_Word b_signature; /* "0x0E1FB007" */ + Elf_Word b_size; + Elf_Half b_checksum; + Elf_Half b_records; +} Elf_Bhdr; + +/* + * ELF Notes. + */ + +typedef struct Elf_Nhdr +{ + Elf_Word n_namesz; /* Length of the note's name. */ + Elf_Word n_descsz; /* Length of the note's descriptor. */ + Elf_Word n_type; /* Type of the note. */ +} Elf_Nhdr; + +#endif /* ASSEMBLY */ + +/* Standardized Elf image notes for booting... The name for all of these is ELFBoot */ +#define ELF_NOTE_BOOT "ELFBoot" + +#define EIN_PROGRAM_NAME 0x00000001 +/* The program in this ELF file */ +#define EIN_PROGRAM_VERSION 0x00000002 +/* The version of the program in this ELF file */ +#define EIN_PROGRAM_CHECKSUM 0x00000003 +/* ip style checksum of the memory image. */ + + +/* Linux image notes for booting... The name for all of these is Linux */ + +#define LIN_COMMAND_LINE 0x00000001 +/* The command line to pass to the loaded kernel. */ +#define LIN_ROOT_DEV 0x00000002 +/* The root dev to pass to the loaded kernel. */ +#define LIN_RAMDISK_FLAGS 0x00000003 +/* Various old ramdisk flags */ +#define LIN_INITRD_START 0x00000004 +/* Start of the ramdisk in bytes */ +#define LIN_INITRD_SIZE 0x00000005 +/* Size of the ramdisk in bytes */ + +/* Notes that are passed to a loaded image */ +/* For the standard elf boot notes n_namesz must be zero */ +#define EBN_FIRMWARE_TYPE 0x00000001 +/* ASCIZ name of the platform firmware. */ +#define EBN_BOOTLOADER_NAME 0x00000002 +/* This specifies just the ASCIZ name of the bootloader */ +#define EBN_BOOTLOADER_VERSION 0x00000003 +/* This specifies the version of the bootloader as an ASCIZ string */ +#define EBN_COMMAND_LINE 0x00000004 +/* This specifies a command line that can be set by user interaction, + * and is provided as a free form ASCIZ string to the loaded image. + */ +#define EBN_NOP 0x00000005 +/* A note nop note has no meaning, useful for inserting explicit padding */ +#define EBN_LOADED_IMAGE 0x00000006 +/* An ASCIZ string naming the loaded image */ + + +/* Etherboot specific notes */ +#define EB_PARAM_NOTE "Etherboot" +#define EB_IA64_SYSTAB 0x00000001 +#define EB_IA64_MEMMAP 0x00000002 +#define EB_IA64_FPSWA 0x00000003 +#define EB_IA64_CONINFO 0x00000004 +#define EB_BOOTP_DATA 0x00000005 +#define EB_HEADER 0x00000006 +#define EB_IA64_IMAGE_HANDLE 0x00000007 +#define EB_I386_MEMMAP 0x00000008 + + +#endif /* ELF_BOOT_H */ |