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Annotation of qemu/roms/ipxe/src/include/btext.h, revision 1.1

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

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