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77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
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/*
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* This file describes the structure passed from the BootX application
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* (for MacOS) when it is used to boot Linux.
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*
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* Written by Benjamin Herrenschmidt.
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*
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* Move to LinuxBIOS by LYH yhlu@tyan.com
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*
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*/
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#ifndef _BTEXT_H__
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#define _BTEXT_H__
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#if 1
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#define u32 unsigned int
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#define u16 unsigned short
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#define u8 unsigned char
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#endif
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/* Here are the boot informations that are passed to the bootstrap
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* Note that the kernel arguments and the device tree are appended
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* at the end of this structure. */
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typedef struct boot_infos
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{
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/* NEW (vers. 2) this holds the current _logical_ base addr of
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the frame buffer (for use by early boot message) */
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u8* logicalDisplayBase;
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/* Some infos about the current MacOS display */
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u32 dispDeviceRect[4]; /* left,top,right,bottom */
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u32 dispDeviceDepth; /* (8, 16 or 32) */
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u8* dispDeviceBase; /* base address (physical) */
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u32 dispDeviceRowBytes; /* rowbytes (in bytes) */
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u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */
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/* The framebuffer size (optional, currently 0) */
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u32 frameBufferSize; /* Represents a max size, can be 0. */
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} boot_infos_t;
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/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented
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* by 3 short words containing a 16 bits (unsigned) color component.
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* Later versions may contain the gamma table for direct-color devices here.
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*/
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#define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL)
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/*
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* Definitions for using the procedures in btext.c.
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*
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* Benjamin Herrenschmidt <benh@kernel.crashing.org>
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*/
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extern void btext_clearscreen(void);
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extern boot_infos_t disp_bi;
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extern u32 boot_text_mapped;
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void btext_setup_display(u32 width, u32 height, u32 depth, u32 pitch,
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unsigned long address);
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void map_boot_text(void);
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void btext_drawchar(char c);
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void btext_drawstring(const char *str);
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void btext_drawhex(u32 v);
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void btext_putc(int c);
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void btext_init(void);
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#endif /* _BTEXT_H */
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