/* ----------------------------------------------------------------------- * * * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved * Copyright 2012 Intel Corporation; author: H. Peter Anvin * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following * conditions: * * The above copyright notice and this permission notice shall * be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * ----------------------------------------------------------------------- */ /* * syslinux/linux.h * * Definitions used to boot a Linux kernel */ #ifndef _SYSLINUX_LINUX_H #define _SYSLINUX_LINUX_H #include #include #include /* A chunk of an initramfs. These are kept as a doubly-linked circular list with headnode; the headnode is distinguished by having len == 0. The data pointer can be NULL if data_len is zero; if data_len < len then the balance of the region is zeroed. */ struct initramfs { struct initramfs *prev, *next; size_t len; size_t align; const void *data; size_t data_len; }; #define INITRAMFS_MAX_ALIGN 4096 struct setup_data_header { uint64_t next; uint32_t type; uint32_t len; } __packed; struct setup_data { struct setup_data *prev, *next; const void *data; struct setup_data_header hdr; }; #define SETUP_NONE 0 #define SETUP_E820_EXT 1 #define SETUP_DTB 2 #define XLF_KERNEL_64 (1 << 0) #define XLF_CAN_BE_LOADED_ABOVE_4G (1 << 1) #define XLF_EFI_HANDOVER_32 (1 << 2) #define XLF_EFI_HANDOVER_64 (1 << 3) struct linux_header { uint8_t boot_sector_1[0x0020]; uint16_t old_cmd_line_magic; uint16_t old_cmd_line_offset; uint8_t boot_sector_2[0x01f1 - 0x0024]; uint8_t setup_sects; uint16_t root_flags; uint32_t syssize; uint16_t ram_size; uint16_t vid_mode; uint16_t root_dev; uint16_t boot_flag; uint16_t jump; uint32_t header; uint16_t version; uint32_t realmode_swtch; uint16_t start_sys; uint16_t kernel_version; uint8_t type_of_loader; uint8_t loadflags; uint16_t setup_move_size; uint32_t code32_start; uint32_t ramdisk_image; uint32_t ramdisk_size; uint32_t bootsect_kludge; uint16_t heap_end_ptr; uint16_t pad1; uint32_t cmd_line_ptr; uint32_t initrd_addr_max; uint32_t kernel_alignment; uint8_t relocatable_kernel; uint8_t min_alignment; uint16_t xloadflags; uint32_t cmdline_max_len; uint32_t hardware_subarch; uint64_t hardware_subarch_data; uint32_t payload_offset; uint32_t payload_length; uint64_t setup_data; uint64_t pref_address; uint32_t init_size; uint32_t handover_offset; } __packed; struct screen_info { uint8_t orig_x; /* 0x00 */ uint8_t orig_y; /* 0x01 */ uint16_t ext_mem_k; /* 0x02 */ uint16_t orig_video_page; /* 0x04 */ uint8_t orig_video_mode; /* 0x06 */ uint8_t orig_video_cols; /* 0x07 */ uint8_t flags; /* 0x08 */ uint8_t unused2; /* 0x09 */ uint16_t orig_video_ega_bx;/* 0x0a */ uint16_t unused3; /* 0x0c */ uint8_t orig_video_lines; /* 0x0e */ uint8_t orig_video_isVGA; /* 0x0f */ uint16_t orig_video_points;/* 0x10 */ /* VESA graphic mode -- linear frame buffer */ uint16_t lfb_width; /* 0x12 */ uint16_t lfb_height; /* 0x14 */ uint16_t lfb_depth; /* 0x16 */ uint32_t lfb_base; /* 0x18 */ uint32_t lfb_size; /* 0x1c */ uint16_t cl_magic, cl_offset; /* 0x20 */ uint16_t lfb_linelength; /* 0x24 */ uint8_t red_size; /* 0x26 */ uint8_t red_pos; /* 0x27 */ uint8_t green_size; /* 0x28 */ uint8_t green_pos; /* 0x29 */ uint8_t blue_size; /* 0x2a */ uint8_t blue_pos; /* 0x2b */ uint8_t rsvd_size; /* 0x2c */ uint8_t rsvd_pos; /* 0x2d */ uint16_t vesapm_seg; /* 0x2e */ uint16_t vesapm_off; /* 0x30 */ uint16_t pages; /* 0x32 */ uint16_t vesa_attributes; /* 0x34 */ uint32_t capabilities; /* 0x36 */ uint8_t _reserved[6]; /* 0x3a */ } __packed; int syslinux_boot_linux(void *kernel_buf, size_t kernel_size, struct initramfs *initramfs, struct setup_data *setup_data, char *cmdline); /* Initramfs manipulation functions */ struct initramfs *initramfs_init(void); int initramfs_add_data(struct initramfs *ihead, const void *data, size_t data_len, size_t len, size_t align); int initramfs_mknod(struct initramfs *ihead, const char *filename, int do_mkdir, uint16_t mode, size_t len, uint32_t major, uint32_t minor); int initramfs_add_file(struct initramfs *ihead, const void *data, size_t data_len, size_t len, const char *filename, int do_mkdir, uint32_t mode); int initramfs_load_file(struct initramfs *ihead, const char *src_filename, const char *dst_filename, int do_mkdir, uint32_t mode); int initramfs_add_trailer(struct initramfs *ihead); int initramfs_load_archive(struct initramfs *ihead, const char *filename); /* Get the combined size of the initramfs */ static inline uint32_t initramfs_size(struct initramfs *initramfs) { struct initramfs *ip; uint32_t size = 0; if (!initramfs) return 0; for (ip = initramfs->next; ip->len; ip = ip->next) { size = (size + ip->align - 1) & ~(ip->align - 1); /* Alignment */ size += ip->len; } return size; } /* Setup data manipulation functions */ struct setup_data *setup_data_init(void); int setup_data_add(struct setup_data *head, uint32_t type, const void *data, size_t data_len); int setup_data_load(struct setup_data *head, uint32_t type, const char *filename); #endif /* _SYSLINUX_LINUX_H */