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/*
* This file describes the structure passed from the BootX application
* (for MacOS) when it is used to boot Linux.
*
* Written by Benjamin Herrenschmidt.
*
* Move to LinuxBIOS by LYH yhlu@tyan.com
*
*/
#ifndef _BTEXT_H__
#define _BTEXT_H__
#define u32 uint32_t
#define u16 uint16_t
#define u8 uint8_t
/* Here are the boot informations that are passed to the bootstrap
* Note that the kernel arguments and the device tree are appended
* at the end of this structure. */
typedef struct boot_infos
{
/* NEW (vers. 2) this holds the current _logical_ base addr of
the frame buffer (for use by early boot message) */
u8* logicalDisplayBase;
/* Some infos about the current MacOS display */
u32 dispDeviceRect[4]; /* left,top,right,bottom */
u32 dispDeviceDepth; /* (8, 16 or 32) */
u8* dispDeviceBase; /* base address (physical) */
u32 dispDeviceRowBytes; /* rowbytes (in bytes) */
u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */
/* The framebuffer size (optional, currently 0) */
u32 frameBufferSize; /* Represents a max size, can be 0. */
} boot_infos_t;
/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented
* by 3 short words containing a 16 bits (unsigned) color component.
* Later versions may contain the gamma table for direct-color devices here.
*/
#define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL)
/*
* Definitions for using the procedures in btext.c.
*
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
*/
extern void btext_clearscreen(void);
extern boot_infos_t disp_bi;
extern u32 boot_text_mapped;
void btext_setup_display(u32 width, u32 height, u32 depth, u32 pitch,
unsigned long address);
void map_boot_text(void);
void btext_update_display(unsigned long phys, u32 width, u32 height,
u32 depth, u32 pitch);
void btext_drawchar(char c);
void btext_drawstring(const char *str);
void btext_drawhex(u32 v);
#endif /* _BTEXT_H */
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