/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * This file describes the structure passed from the BootX application * (for MacOS) when it is used to boot Linux. * * Written by Benjamin Herrenschmidt.
*/
#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).
*/
/* 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 */ typedefstruct 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. */ typedefstruct 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 its 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 macintosh #pragma options align=reset #endif
#endif/* _UAPI__ASM_BOOTX_H__ */
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