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/*
* This file describes the structure passed from the BootX application
* (for MacOS) when it is used to boot Linux.
*
* Written by Benjamin Herrenschmidt.
*/
#ifndef __ASM_BOOTX_H__
#define __ASM_BOOTX_H__
#ifdef macintosh
#include <Types.h>
#endif
#ifdef macintosh
/* All this requires PowerPC alignment */
#pragma options align=power
#endif
/* On boostrap entry:
*
* r3 = 0x426f6f58 ('BooX')
* r4 = pointer to boot_infos
* r5 = NULL
*/
#define BOOT_INFO_VERSION 2
#define BOOT_INFO_COMPATIBLE_VERSION 1
/* Here are the boot informations that are passed to the bootstrap
* Note that the kernel arguments and the device tree are appended
* at the end of this structure. */
typedef struct boot_infos
{
/* Version of this structure */
unsigned long version;
/* backward compatible down to version: */
unsigned long compatible_version;
/* NEW (vers. 2) this holds the current _logical_ base addr of
the frame buffer (for use by early boot message) */
unsigned char* logicalDisplayBase;
/* Set to 0 by current BootX */
unsigned long unused[2];
/* The device tree (internal addresses relative to the beginning of the tree,
* device tree offset relative to the beginning of this structure). */
unsigned long deviceTreeOffset; /* Device tree offset */
unsigned long deviceTreeSize; /* Size of the device tree */
/* Some infos about the current MacOS display */
unsigned long dispDeviceRect[4]; /* left,top,right,bottom */
unsigned long dispDeviceDepth; /* (8, 16 or 32) */
unsigned char* dispDeviceBase; /* base address (physical) */
unsigned long dispDeviceRowBytes; /* rowbytes (in bytes) */
unsigned long dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */
/* Optional offset in the registry to the current
* MacOS display. (Can be 0 when not detected) */
unsigned long dispDeviceRegEntryOffset;
/* Optional pointer to boot ramdisk (offset from this structure) */
unsigned long ramDisk;
unsigned long ramDiskSize; /* size of ramdisk image */
/* Kernel command line arguments (offset from this structure) */
unsigned long kernelParamsOffset;
} boot_infos_t;
/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented
* by 3 short words containing a 16 bits (unsigned) color component.
* Later versions may contain the gamma table for direct-color devices here.
*/
#define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL)
#ifdef macintosh
#pragma options align=reset
#endif
#endif
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