| 1 | /* |
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| 2 | * This file describes the structure passed from the BootX application |
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| 3 | * (for MacOS) when it is used to boot Linux. |
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| 4 | * |
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| 5 | * Written by Benjamin Herrenschmidt. |
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| 6 | * |
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| 7 | * Move to LinuxBIOS by LYH yhlu@tyan.com |
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| 8 | * |
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| 9 | */ |
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| 10 | |
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| 11 | |
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| 12 | #ifndef _BTEXT_H__ |
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| 13 | #define _BTEXT_H__ |
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| 14 | |
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| 15 | #if 1 |
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| 16 | #define u32 unsigned int |
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| 17 | #define u16 unsigned short |
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| 18 | #define u8 unsigned char |
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| 19 | #endif |
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| 20 | |
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| 21 | /* Here are the boot informations that are passed to the bootstrap |
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| 22 | * Note that the kernel arguments and the device tree are appended |
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| 23 | * at the end of this structure. */ |
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| 24 | typedef struct boot_infos |
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| 25 | { |
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| 26 | |
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| 27 | /* NEW (vers. 2) this holds the current _logical_ base addr of |
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| 28 | the frame buffer (for use by early boot message) */ |
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| 29 | u8* logicalDisplayBase; |
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| 30 | |
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| 31 | |
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| 32 | /* Some infos about the current MacOS display */ |
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| 33 | u32 dispDeviceRect[4]; /* left,top,right,bottom */ |
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| 34 | u32 dispDeviceDepth; /* (8, 16 or 32) */ |
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| 35 | u32 dispDeviceBase; /* base address (physical) */ |
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| 36 | u32 dispDeviceRowBytes; /* rowbytes (in bytes) */ |
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| 37 | u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */ |
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| 38 | |
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| 39 | |
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| 40 | /* The framebuffer size (optional, currently 0) */ |
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| 41 | u32 frameBufferSize; /* Represents a max size, can be 0. */ |
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| 42 | |
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| 43 | |
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| 44 | } boot_infos_t; |
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| 45 | |
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| 46 | /* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented |
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| 47 | * by 3 short words containing a 16 bits (unsigned) color component. |
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| 48 | * Later versions may contain the gamma table for direct-color devices here. |
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| 49 | */ |
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| 50 | #define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL) |
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| 51 | |
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| 52 | |
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| 53 | /* |
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| 54 | * Definitions for using the procedures in btext.c. |
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| 55 | * |
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| 56 | * Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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| 57 | */ |
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| 58 | |
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| 59 | extern boot_infos_t disp_bi; |
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| 60 | extern u32 boot_text_mapped; |
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| 61 | |
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| 62 | #endif /* _BTEXT_H */ |
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