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/arch/powerpc/include/asm/bootx.h

https://github.com/aicjofs/android_kernel_lge_v500_20d_f2fs
C Header | 171 lines | 77 code | 33 blank | 61 comment | 0 complexity | 68bbc03e440ac524ee0e67a167f3d0c1 MD5 | raw file
  1/*
  2 * This file describes the structure passed from the BootX application
  3 * (for MacOS) when it is used to boot Linux.
  4 *
  5 * Written by Benjamin Herrenschmidt.
  6 */
  7
  8
  9#ifndef __ASM_BOOTX_H__
 10#define __ASM_BOOTX_H__
 11
 12#include <linux/types.h>
 13
 14#ifdef macintosh
 15#include <Types.h>
 16#include "linux_type_defs.h"
 17#endif
 18
 19#ifdef macintosh
 20/* All this requires PowerPC alignment */
 21#pragma options align=power
 22#endif
 23
 24/* On kernel entry:
 25 *
 26 * r3 = 0x426f6f58    ('BooX')
 27 * r4 = pointer to boot_infos
 28 * r5 = NULL
 29 *
 30 * Data and instruction translation disabled, interrupts
 31 * disabled, kernel loaded at physical 0x00000000 on PCI
 32 * machines (will be different on NuBus).
 33 */
 34
 35#define BOOT_INFO_VERSION               5
 36#define BOOT_INFO_COMPATIBLE_VERSION    1
 37
 38/* Bit in the architecture flag mask. More to be defined in
 39   future versions. Note that either BOOT_ARCH_PCI or
 40   BOOT_ARCH_NUBUS is set. The other BOOT_ARCH_NUBUS_xxx are
 41   set additionally when BOOT_ARCH_NUBUS is set.
 42 */
 43#define BOOT_ARCH_PCI                   0x00000001UL
 44#define BOOT_ARCH_NUBUS                 0x00000002UL
 45#define BOOT_ARCH_NUBUS_PDM             0x00000010UL
 46#define BOOT_ARCH_NUBUS_PERFORMA        0x00000020UL
 47#define BOOT_ARCH_NUBUS_POWERBOOK       0x00000040UL
 48
 49/*  Maximum number of ranges in phys memory map */
 50#define MAX_MEM_MAP_SIZE				26
 51
 52/* This is the format of an element in the physical memory map. Note that
 53   the map is optional and current BootX will only build it for pre-PCI
 54   machines */
 55typedef struct boot_info_map_entry
 56{
 57    __u32       physAddr;                /* Physical starting address */
 58    __u32       size;                    /* Size in bytes */
 59} boot_info_map_entry_t;
 60
 61
 62/* Here are the boot informations that are passed to the bootstrap
 63 * Note that the kernel arguments and the device tree are appended
 64 * at the end of this structure. */
 65typedef struct boot_infos
 66{
 67    /* Version of this structure */
 68    __u32       version;
 69    /* backward compatible down to version: */
 70    __u32       compatible_version;
 71
 72    /* NEW (vers. 2) this holds the current _logical_ base addr of
 73       the frame buffer (for use by early boot message) */
 74    __u8*       logicalDisplayBase;
 75
 76    /* NEW (vers. 4) Apple's machine identification */
 77    __u32       machineID;
 78
 79    /* NEW (vers. 4) Detected hw architecture */
 80    __u32       architecture;
 81
 82    /* The device tree (internal addresses relative to the beginning of the tree,
 83     * device tree offset relative to the beginning of this structure).
 84     * On pre-PCI macintosh (BOOT_ARCH_PCI bit set to 0 in architecture), this
 85     * field is 0.
 86     */
 87    __u32       deviceTreeOffset;        /* Device tree offset */
 88    __u32       deviceTreeSize;          /* Size of the device tree */
 89
 90    /* Some infos about the current MacOS display */
 91    __u32       dispDeviceRect[4];       /* left,top,right,bottom */
 92    __u32       dispDeviceDepth;         /* (8, 16 or 32) */
 93    __u8*       dispDeviceBase;          /* base address (physical) */
 94    __u32       dispDeviceRowBytes;      /* rowbytes (in bytes) */
 95    __u32       dispDeviceColorsOffset;  /* Colormap (8 bits only) or 0 (*) */
 96    /* Optional offset in the registry to the current
 97     * MacOS display. (Can be 0 when not detected) */
 98     __u32      dispDeviceRegEntryOffset;
 99
100    /* Optional pointer to boot ramdisk (offset from this structure) */
101    __u32       ramDisk;
102    __u32       ramDiskSize;             /* size of ramdisk image */
103
104    /* Kernel command line arguments (offset from this structure) */
105    __u32       kernelParamsOffset;
106
107    /* ALL BELOW NEW (vers. 4) */
108
109    /* This defines the physical memory. Valid with BOOT_ARCH_NUBUS flag
110       (non-PCI) only. On PCI, memory is contiguous and it's size is in the
111       device-tree. */
112    boot_info_map_entry_t
113    	        physMemoryMap[MAX_MEM_MAP_SIZE]; /* Where the phys memory is */
114    __u32       physMemoryMapSize;               /* How many entries in map */
115
116
117    /* The framebuffer size (optional, currently 0) */
118    __u32       frameBufferSize;         /* Represents a max size, can be 0. */
119
120    /* NEW (vers. 5) */
121
122    /* Total params size (args + colormap + device tree + ramdisk) */
123    __u32       totalParamsSize;
124
125} boot_infos_t;
126
127#ifdef __KERNEL__
128/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index
129 * is represented by 3 short words containing a 16 bits (unsigned) color
130 * component. Later versions may contain the gamma table for direct-color
131 * devices here.
132 */
133#define BOOTX_COLORTABLE_SIZE    (256UL*3UL*2UL)
134
135/* BootX passes the device-tree using a format that comes from earlier
136 * ppc32 kernels. This used to match what is in prom.h, but not anymore
137 * so we now define it here
138 */
139struct bootx_dt_prop {
140	u32	name;
141	int	length;
142	u32	value;
143	u32	next;
144};
145
146struct bootx_dt_node {
147	u32	unused0;
148	u32	unused1;
149	u32	phandle;	/* not really available */
150	u32	unused2;
151	u32	unused3;
152	u32	unused4;
153	u32	unused5;
154	u32	full_name;
155	u32	properties;
156	u32	parent;
157	u32	child;
158	u32	sibling;
159	u32	next;
160	u32	allnext;
161};
162
163extern void bootx_init(unsigned long r4, unsigned long phys);
164
165#endif /* __KERNEL__ */
166
167#ifdef macintosh
168#pragma options align=reset
169#endif
170
171#endif