172 lines
5.1 KiB
C
172 lines
5.1 KiB
C
/*
|
|
* 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__
|
|
|
|
#include <linux/types.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;
|
|
|
|
#ifdef __KERNEL__
|
|
/* (*) 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)
|
|
|
|
/* BootX passes the device-tree using a format that comes from earlier
|
|
* ppc32 kernels. This used to match what is in prom.h, but not anymore
|
|
* so we now define it here
|
|
*/
|
|
struct bootx_dt_prop {
|
|
u32 name;
|
|
int length;
|
|
u32 value;
|
|
u32 next;
|
|
};
|
|
|
|
struct bootx_dt_node {
|
|
u32 unused0;
|
|
u32 unused1;
|
|
u32 phandle; /* not really available */
|
|
u32 unused2;
|
|
u32 unused3;
|
|
u32 unused4;
|
|
u32 unused5;
|
|
u32 full_name;
|
|
u32 properties;
|
|
u32 parent;
|
|
u32 child;
|
|
u32 sibling;
|
|
u32 next;
|
|
u32 allnext;
|
|
};
|
|
|
|
extern void bootx_init(unsigned long r4, unsigned long phys);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#ifdef macintosh
|
|
#pragma options align=reset
|
|
#endif
|
|
|
|
#endif
|