include/bootm.h

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef _BOOTM_H
   9 #define _BOOTM_H
  10
  11 #include <command.h>
  12 #include <image.h>
  13
  14 #define BOOTM_ERR_RESET         (-1)
  15 #define BOOTM_ERR_OVERLAP               (-2)
  16 #define BOOTM_ERR_UNIMPLEMENTED (-3)
  17
  18 /*
  19  *  Continue booting an OS image; caller already has:
  20  *  - copied image header to global variable `header'
  21  *  - checked header magic number, checksums (both header & image),
  22  *  - verified image architecture (PPC) and type (KERNEL or MULTI),
  23  *  - loaded (first part of) image to header load address,
  24  *  - disabled interrupts.
  25  *
  26  * @flag: Flags indicating what to do (BOOTM_STATE_...)
  27  * @argc: Number of arguments. Note that the arguments are shifted down
  28  *       so that 0 is the first argument not processed by U-Boot, and
  29  *       argc is adjusted accordingly. This avoids confusion as to how
  30  *       many arguments are available for the OS.
  31  * @images: Pointers to os/initrd/fdt
  32  * @return 1 on error. On success the OS boots so this function does
  33  * not return.
  34  */
  35 typedef int boot_os_fn(int flag, int argc, char * const argv[],
  36                         bootm_headers_t *images);
  37
  38 extern boot_os_fn do_bootm_linux;
  39 int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  40 void lynxkdi_boot(image_header_t *hdr);
  41
  42 boot_os_fn *bootm_os_get_boot_func(int os);
  43
  44 int bootm_host_load_images(const void *fit, int cfg_noffset);
  45
  46 int boot_selected_os(int argc, char * const argv[], int state,
  47                      bootm_headers_t *images, boot_os_fn *boot_fn);
  48
  49 ulong bootm_disable_interrupts(void);
  50
  51 /* This is a special function used by booti/bootz */
  52 int bootm_find_images(int flag, int argc, char * const argv[]);
  53
  54 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
  55                     int states, bootm_headers_t *images, int boot_progress);
  56
  57 void arch_preboot_os(void);
  58
  59 /**
  60  * bootm_decomp_image() - decompress the operating system
  61  *
  62  * @comp:       Compression algorithm that is used (IH_COMP_...)
  63  * @load:       Destination load address in U-Boot memory
  64  * @image_start Image start address (where we are decompressing from)
  65  * @type:       OS type (IH_OS_...)
  66  * @load_bug:   Place to decompress to
  67  * @image_buf:  Address to decompress from
  68  * @image_len:  Number of bytes in @image_buf to decompress
  69  * @unc_len:    Available space for decompression
  70  * @return 0 if OK, -ve on error (BOOTM_ERR_...)
  71  */
  72 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
  73                        void *load_buf, void *image_buf, ulong image_len,
  74                        uint unc_len, ulong *load_end);
  75
  76 #endif