Benjamin Herrenschmidt | d7f3945 | 2005-11-23 17:58:13 +1100 | [diff] [blame] | 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 | |
Jaswinder Singh Rajput | 4be2c7f | 2009-01-31 11:41:04 +0530 | [diff] [blame^] | 12 | #include <linux/types.h> |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 13 | |
Benjamin Herrenschmidt | d7f3945 | 2005-11-23 17:58:13 +1100 | [diff] [blame] | 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 */ |
| 55 | typedef 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. */ |
| 65 | typedef 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 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 127 | #ifdef __KERNEL__ |
Benjamin Herrenschmidt | d7f3945 | 2005-11-23 17:58:13 +1100 | [diff] [blame] | 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 | */ |
| 139 | struct bootx_dt_prop { |
| 140 | u32 name; |
| 141 | int length; |
| 142 | u32 value; |
| 143 | u32 next; |
| 144 | }; |
| 145 | |
| 146 | struct 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 | |
| 163 | extern void bootx_init(unsigned long r4, unsigned long phys); |
| 164 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 165 | #endif /* __KERNEL__ */ |
| 166 | |
Benjamin Herrenschmidt | d7f3945 | 2005-11-23 17:58:13 +1100 | [diff] [blame] | 167 | #ifdef macintosh |
| 168 | #pragma options align=reset |
| 169 | #endif |
| 170 | |
| 171 | #endif |