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Commit d9b26352 authored by Matthew Garrett's avatar Matthew Garrett Committed by H. Peter Anvin
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x86, setup: Store the boot cursor state 



Add a field to store the boot cursor state and implement this for VGA on
x86. This can then be used to set the default policy for the boot console.

Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
LKML-Reference: <1258142222-16092-1-git-send-email-mjg@redhat.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent 156171c7

arch/x86/boot/video.c

+6 −0
Original line number Diff line number Diff line
@@ -27,6 +27,12 @@ static void store_cursor_position(void) 


	boot_params.screen_info.orig_x = oreg.dl;

	boot_params.screen_info.orig_y = oreg.dh;



	if (oreg.ch & 0x20)

		boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;



	if ((oreg.ch & 0x1f) > (oreg.cl & 0x1f))

		boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;

}



static void store_video_mode(void)

include/linux/screen_info.h

+4 −1
Original line number Diff line number Diff line
@@ -14,7 +14,8 @@ struct screen_info { 
	__u16 orig_video_page;	/* 0x04 */

	__u8  orig_video_mode;	/* 0x06 */

	__u8  orig_video_cols;	/* 0x07 */

	__u16 unused2;		/* 0x08 */

	__u8  flags;		/* 0x08 */

	__u8  unused2;		/* 0x09 */

	__u16 orig_video_ega_bx;/* 0x0a */

	__u16 unused3;		/* 0x0c */

	__u8  orig_video_lines;	/* 0x0e */
@@ -65,6 +66,8 @@ struct screen_info { 


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



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



#ifdef __KERNEL__

extern struct screen_info screen_info;