projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| c3617f72 DH |
2 | /* |
| 3 | * This file describes the structure passed from the BootX application | |
| 4 | * (for MacOS) when it is used to boot Linux. | |
| 5 | * | |
| 6 | * Written by Benjamin Herrenschmidt. | |
| 7 | */ | |
| 8 | ||
| 9 | ||
| 10 | #ifndef _UAPI__ASM_BOOTX_H__ | |
| 11 | #define _UAPI__ASM_BOOTX_H__ | |
| 12 | ||
| 13 | #include <linux/types.h> | |
| 14 | ||
| 15 | #ifdef macintosh | |
| 16 | #include <Types.h> | |
| 17 | #include "linux_type_defs.h" | |
| 18 | #endif | |
| 19 | ||
| 20 | #ifdef macintosh | |
| 21 | /* All this requires PowerPC alignment */ | |
| 22 | #pragma options align=power | |
| 23 | #endif | |
| 24 | ||
| 25 | /* On kernel entry: | |
| 26 | * | |
| 27 | * r3 = 0x426f6f58 ('BooX') | |
| 28 | * r4 = pointer to boot_infos | |
| 29 | * r5 = NULL | |
| 30 | * | |
| 31 | * Data and instruction translation disabled, interrupts | |
| 32 | * disabled, kernel loaded at physical 0x00000000 on PCI | |
| 33 | * machines (will be different on NuBus). | |
| 34 | */ | |
| 35 | ||
| 36 | #define BOOT_INFO_VERSION 5 | |
| 37 | #define BOOT_INFO_COMPATIBLE_VERSION 1 | |
| 38 | ||
| 39 | /* Bit in the architecture flag mask. More to be defined in | |
| 40 | future versions. Note that either BOOT_ARCH_PCI or | |
| 41 | BOOT_ARCH_NUBUS is set. The other BOOT_ARCH_NUBUS_xxx are | |
| 42 | set additionally when BOOT_ARCH_NUBUS is set. | |
| 43 | */ | |
| 44 | #define BOOT_ARCH_PCI 0x00000001UL | |
| 45 | #define BOOT_ARCH_NUBUS 0x00000002UL | |
| 46 | #define BOOT_ARCH_NUBUS_PDM 0x00000010UL | |
| 47 | #define BOOT_ARCH_NUBUS_PERFORMA 0x00000020UL | |
| 48 | #define BOOT_ARCH_NUBUS_POWERBOOK 0x00000040UL | |
| 49 | ||
| 50 | /* Maximum number of ranges in phys memory map */ | |
| 51 | #define MAX_MEM_MAP_SIZE 26 | |
| 52 | ||
| 53 | /* This is the format of an element in the physical memory map. Note that | |
| 54 | the map is optional and current BootX will only build it for pre-PCI | |
| 55 | machines */ | |
| 56 | typedef struct boot_info_map_entry | |
| 57 | { | |
| 58 | __u32 physAddr; /* Physical starting address */ | |
| 59 | __u32 size; /* Size in bytes */ | |
| 60 | } boot_info_map_entry_t; | |
| 61 | ||
| 62 | ||
| 63 | /* Here are the boot informations that are passed to the bootstrap | |
| 64 | * Note that the kernel arguments and the device tree are appended | |
| 65 | * at the end of this structure. */ | |
| 66 | typedef struct boot_infos | |
| 67 | { | |
| 68 | /* Version of this structure */ | |
| 69 | __u32 version; | |
| 70 | /* backward compatible down to version: */ | |
| 71 | __u32 compatible_version; | |
| 72 | ||
| 73 | /* NEW (vers. 2) this holds the current _logical_ base addr of | |
| 74 | the frame buffer (for use by early boot message) */ | |
| 75 | __u8* logicalDisplayBase; | |
| 76 | ||
| 77 | /* NEW (vers. 4) Apple's machine identification */ | |
| 78 | __u32 machineID; | |
| 79 | ||
| 80 | /* NEW (vers. 4) Detected hw architecture */ | |
| 81 | __u32 architecture; | |
| 82 | ||
| 83 | /* The device tree (internal addresses relative to the beginning of the tree, | |
| 84 | * device tree offset relative to the beginning of this structure). | |
| 85 | * On pre-PCI macintosh (BOOT_ARCH_PCI bit set to 0 in architecture), this | |
| 86 | * field is 0. | |
| 87 | */ | |
| 88 | __u32 deviceTreeOffset; /* Device tree offset */ | |
| 89 | __u32 deviceTreeSize; /* Size of the device tree */ | |
| 90 | ||
| 91 | /* Some infos about the current MacOS display */ | |
| 92 | __u32 dispDeviceRect[4]; /* left,top,right,bottom */ | |
| 93 | __u32 dispDeviceDepth; /* (8, 16 or 32) */ | |
| 94 | __u8* dispDeviceBase; /* base address (physical) */ | |
| 95 | __u32 dispDeviceRowBytes; /* rowbytes (in bytes) */ | |
| 96 | __u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */ | |
| 97 | /* Optional offset in the registry to the current | |
| 98 | * MacOS display. (Can be 0 when not detected) */ | |
| 99 | __u32 dispDeviceRegEntryOffset; | |
| 100 | ||
| 101 | /* Optional pointer to boot ramdisk (offset from this structure) */ | |
| 102 | __u32 ramDisk; | |
| 103 | __u32 ramDiskSize; /* size of ramdisk image */ | |
| 104 | ||
| 105 | /* Kernel command line arguments (offset from this structure) */ | |
| 106 | __u32 kernelParamsOffset; | |
| 107 | ||
| 108 | /* ALL BELOW NEW (vers. 4) */ | |
| 109 | ||
| 110 | /* This defines the physical memory. Valid with BOOT_ARCH_NUBUS flag | |
| 111 | (non-PCI) only. On PCI, memory is contiguous and it's size is in the | |
| 112 | device-tree. */ | |
| 113 | boot_info_map_entry_t | |
| 114 | physMemoryMap[MAX_MEM_MAP_SIZE]; /* Where the phys memory is */ | |
| 115 | __u32 physMemoryMapSize; /* How many entries in map */ | |
| 116 | ||
| 117 | ||
| 118 | /* The framebuffer size (optional, currently 0) */ | |
| 119 | __u32 frameBufferSize; /* Represents a max size, can be 0. */ | |
| 120 | ||
| 121 | /* NEW (vers. 5) */ | |
| 122 | ||
| 123 | /* Total params size (args + colormap + device tree + ramdisk) */ | |
| 124 | __u32 totalParamsSize; | |
| 125 | ||
| 126 | } boot_infos_t; | |
| 127 | ||
| 128 | ||
| 129 | #ifdef macintosh | |
| 130 | #pragma options align=reset | |
| 131 | #endif | |
| 132 | ||
| 133 | #endif /* _UAPI__ASM_BOOTX_H__ */ |