/* * 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>#include "linux_type_defs.h"#endif #ifdef macintosh/* All this requires PowerPC alignment */#pragma options align=power#endif /* On kernel entry: * * r3 = 0x426f6f58    ('BooX') * r4 = pointer to boot_infos * r5 = NULL * * Data and instruction translation disabled, interrupts * disabled, kernel loaded at physical 0x00000000 on PCI * machines (will be different on NuBus). */ #define BOOT_INFO_VERSION               5#define BOOT_INFO_COMPATIBLE_VERSION    1 /* Bit in the architecture flag mask. More to be defined in   future versions. Note that either BOOT_ARCH_PCI or   BOOT_ARCH_NUBUS is set. The other BOOT_ARCH_NUBUS_xxx are   set additionally when BOOT_ARCH_NUBUS is set. */#define BOOT_ARCH_PCI                   0x00000001UL#define BOOT_ARCH_NUBUS                 0x00000002UL#define BOOT_ARCH_NUBUS_PDM             0x00000010UL#define BOOT_ARCH_NUBUS_PERFORMA        0x00000020UL#define BOOT_ARCH_NUBUS_POWERBOOK       0x00000040UL /*  Maximum number of ranges in phys memory map */#define MAX_MEM_MAP_SIZE				26 /* This is the format of an element in the physical memory map. Note that   the map is optional and current BootX will only build it for pre-PCI   machines */typedef struct boot_info_map_entry{    __u32       physAddr;                /* Physical starting address */    __u32       size;                    /* Size in bytes */} boot_info_map_entry_t;  /* 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 */    __u32       version;    /* backward compatible down to version: */    __u32       compatible_version;     /* NEW (vers. 2) this holds the current _logical_ base addr of       the frame buffer (for use by early boot message) */    __u8*       logicalDisplayBase;     /* NEW (vers. 4) Apple's machine identification */    __u32       machineID;     /* NEW (vers. 4) Detected hw architecture */    __u32       architecture;     /* The device tree (internal addresses relative to the beginning of the tree,     * device tree offset relative to the beginning of this structure).     * On pre-PCI macintosh (BOOT_ARCH_PCI bit set to 0 in architecture), this     * field is 0.     */    __u32       deviceTreeOffset;        /* Device tree offset */    __u32       deviceTreeSize;          /* Size of the device tree */     /* Some infos about the current MacOS display */    __u32       dispDeviceRect[4];       /* left,top,right,bottom */    __u32       dispDeviceDepth;         /* (8, 16 or 32) */    __u8*       dispDeviceBase;          /* base address (physical) */    __u32       dispDeviceRowBytes;      /* rowbytes (in bytes) */    __u32       dispDeviceColorsOffset;  /* Colormap (8 bits only) or 0 (*) */    /* Optional offset in the registry to the current     * MacOS display. (Can be 0 when not detected) */     __u32      dispDeviceRegEntryOffset;     /* Optional pointer to boot ramdisk (offset from this structure) */    __u32       ramDisk;    __u32       ramDiskSize;             /* size of ramdisk image */     /* Kernel command line arguments (offset from this structure) */    __u32       kernelParamsOffset;     /* ALL BELOW NEW (vers. 4) */     /* This defines the physical memory. Valid with BOOT_ARCH_NUBUS flag       (non-PCI) only. On PCI, memory is contiguous and it's size is in the       device-tree. */    boot_info_map_entry_t    	        physMemoryMap[MAX_MEM_MAP_SIZE]; /* Where the phys memory is */    __u32       physMemoryMapSize;               /* How many entries in map */      /* The framebuffer size (optional, currently 0) */    __u32       frameBufferSize;         /* Represents a max size, can be 0. */     /* NEW (vers. 5) */     /* Total params size (args + colormap + device tree + ramdisk) */    __u32       totalParamsSize; } 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