arch/powerpc/include/asm/bootx.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This file describes the structure passed from the BootX application
   4  * (for MacOS) when it is used to boot Linux.
   5  *
   6  * Written by Benjamin Herrenschmidt.
   7  */
   8
   9 #ifndef __ASM_BOOTX_H__
  10 #define __ASM_BOOTX_H__
  11
  12 #include <uapi/asm/bootx.h>
  13
  14 /* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index
  15  * is represented by 3 short words containing a 16 bits (unsigned) color
  16  * component. Later versions may contain the gamma table for direct-color
  17  * devices here.
  18  */
  19 #define BOOTX_COLORTABLE_SIZE    (256UL*3UL*2UL)
  20
  21 /* BootX passes the device-tree using a format that comes from earlier
  22  * ppc32 kernels. This used to match what is in prom.h, but not anymore
  23  * so we now define it here
  24  */
  25 struct bootx_dt_prop {
  26         u32     name;
  27         int     length;
  28         u32     value;
  29         u32     next;
  30 };
  31
  32 struct bootx_dt_node {
  33         u32     unused0;
  34         u32     unused1;
  35         u32     phandle;        /* not really available */
  36         u32     unused2;
  37         u32     unused3;
  38         u32     unused4;
  39         u32     unused5;
  40         u32     full_name;
  41         u32     properties;
  42         u32     parent;
  43         u32     child;
  44         u32     sibling;
  45         u32     next;
  46         u32     allnext;
  47 };
  48
  49 extern void bootx_init(unsigned long r4, unsigned long phys);
  50
  51 #endif