src/arch/x86/boot/screen_info.h

#ifndef __ARCH_X86_BOOT_SCREEN_INFO_H__
#define __ARCH_X86_BOOT_SCREEN_INFO_H__

#include <stdint.h>

/*
 * These are set up by the setup-routine at boot-time:
 */

struct screen_info {
	uint8_t orig_x;			/* 0x00 */
	uint8_t orig_y;			/* 0x01 */
	uint16_t ext_mem_k;		/* 0x02 */
	uint16_t orig_video_page;	/* 0x04 */
	uint8_t orig_video_mode;	/* 0x06 */
	uint8_t orig_video_cols;	/* 0x07 */
	uint8_t flags;			/* 0x08 */
	uint8_t unused2;		/* 0x09 */
	uint16_t orig_video_ega_bx;	/* 0x0a */
	uint16_t unused3;		/* 0x0c */
	uint8_t orig_video_lines;	/* 0x0e */
	uint8_t orig_video_isVGA;	/* 0x0f */
	uint16_t orig_video_points;	/* 0x10 */

	/* VESA graphic mode -- linear frame buffer */
	uint16_t lfb_width;		/* 0x12 */
	uint16_t lfb_height;		/* 0x14 */
	uint16_t lfb_depth;		/* 0x16 */
	uint32_t lfb_base;		/* 0x18 */
	uint32_t lfb_size;		/* 0x1c */
	uint16_t cl_magic, cl_offset;	/* 0x20 */
	uint16_t lfb_linelength;	/* 0x24 */
	uint8_t red_size;		/* 0x26 */
	uint8_t red_pos;		/* 0x27 */
	uint8_t green_size;		/* 0x28 */
	uint8_t green_pos;		/* 0x29 */
	uint8_t blue_size;		/* 0x2a */
	uint8_t blue_pos;		/* 0x2b */
	uint8_t rsvd_size;		/* 0x2c */
	uint8_t rsvd_pos;		/* 0x2d */
	uint16_t vesapm_seg;		/* 0x2e */
	uint16_t vesapm_off;		/* 0x30 */
	uint16_t pages;			/* 0x32 */
	uint16_t vesa_attributes;	/* 0x34 */
	uint32_t capabilities;		/* 0x36 */
	uint8_t _reserved[6];		/* 0x3a */
} __attribute__((packed));

#define VIDEO_TYPE_MDA		0x10	/* Monochrome Text Display	*/
#define VIDEO_TYPE_CGA		0x11	/* CGA Display 			*/
#define VIDEO_TYPE_EGAM		0x20	/* EGA/VGA in Monochrome Mode	*/
#define VIDEO_TYPE_EGAC		0x21	/* EGA in Color Mode		*/
#define VIDEO_TYPE_VGAC		0x22	/* VGA+ in Color Mode		*/
#define VIDEO_TYPE_VLFB		0x23	/* VESA VGA in graphic mode	*/

#define VIDEO_TYPE_PICA_S3	0x30	/* ACER PICA-61 local S3 video	*/
#define VIDEO_TYPE_MIPS_G364	0x31    /* MIPS Magnum 4000 G364 video  */
#define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */

#define VIDEO_TYPE_TGAC		0x40	/* DEC TGA */

#define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
#define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */

#define VIDEO_TYPE_PMAC		0x60	/* PowerMacintosh frame buffer. */

#define VIDEO_TYPE_EFI		0x70	/* EFI graphic mode		*/

#define VIDEO_FLAGS_NOCURSOR	(1 << 0) /* The video mode has no cursor set */

#endif /* __ARCH_X86_BOOT_SCREEN_INFO_H__ */