com32/include/syslinux/linux.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   Permission is hereby granted, free of charge, to any person
   6  *   obtaining a copy of this software and associated documentation
   7  *   files (the "Software"), to deal in the Software without
   8  *   restriction, including without limitation the rights to use,
   9  *   copy, modify, merge, publish, distribute, sublicense, and/or
  10  *   sell copies of the Software, and to permit persons to whom
  11  *   the Software is furnished to do so, subject to the following
  12  *   conditions:
  13  *
  14  *   The above copyright notice and this permission notice shall
  15  *   be included in all copies or substantial portions of the Software.
  16  *
  17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  *   OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * ----------------------------------------------------------------------- */
  27
  28 /*
  29  * syslinux/linux.h
  30  *
  31  * Definitions used to boot a Linux kernel
  32  */
  33
  34 #ifndef _SYSLINUX_LINUX_H
  35 #define _SYSLINUX_LINUX_H
  36
  37 #include <stddef.h>
  38 #include <stdint.h>
  39
  40 /* A chunk of an initramfs.  These are kept as a doubly-linked
  41    circular list with headnode; the headnode is distinguished by
  42    having len == 0.  The data pointer can be NULL if data_len is zero;
  43    if data_len < len then the balance of the region is zeroed. */
  44
  45 struct initramfs {
  46   struct initramfs *prev, *next;
  47   size_t len;
  48   size_t align;
  49   const void *data;
  50   size_t data_len;
  51 };
  52 #define INITRAMFS_MAX_ALIGN     4096
  53
  54 int syslinux_boot_linux(void *kernel_buf, size_t kernel_size,
  55                         struct initramfs *initramfs,
  56                         char *cmdline,
  57                         uint16_t video_mode,
  58                         uint32_t mem_limit);
  59
  60 /* Initramfs manipulation functions */
  61
  62 struct initramfs *initramfs_init(void);
  63 int initramfs_add_data(struct initramfs *ihead, const void *data,
  64                        size_t data_len, size_t len, size_t align);
  65 int initramfs_mknod(struct initramfs *ihead, const char *filename,
  66                     int do_mkdir,
  67                     uint16_t mode, size_t len,
  68                     uint32_t major, uint32_t minor);
  69 int initramfs_add_file(struct initramfs *ihead, const void *data,
  70                        size_t data_len, size_t len,
  71                        const char *filename, int do_mkdir, uint32_t mode);
  72 int initramfs_load_file(struct initramfs *ihead, const char *src_filename,
  73                         const char *dst_filename, int do_mkdir, uint32_t mode);
  74 int initramfs_add_trailer(struct initramfs *ihead);
  75 int initramfs_load_archive(struct initramfs *ihead, const char *filename);
  76
  77 #endif /* _SYSLINUX_LINUX_H */