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authorMatthew Garrett <mjg@redhat.com>2009-11-13 14:57:00 -0500
committerH. Peter Anvin <hpa@zytor.com>2009-11-13 14:23:11 -0800
commitd9b263528e01bfbaf716b51f38606b3dfe5ac1e9 (patch)
tree0a10b7c3f2298d48af1ab906bb01924ad08d23fb
parent156171c71a0dc4bce12b4408bb1591f8fe32dc1a (diff)
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: Matthew Garrett <mjg@redhat.com> LKML-Reference: <1258142222-16092-1-git-send-email-mjg@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-rw-r--r--arch/x86/boot/video.c6
-rw-r--r--include/linux/screen_info.h5
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
index d42da3802499..f767164cd5df 100644
--- a/arch/x86/boot/video.c
+++ b/arch/x86/boot/video.c
@@ -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)
diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h
index 1ee2c05142f6..899fbb487c94 100644
--- a/include/linux/screen_info.h
+++ b/include/linux/screen_info.h
@@ -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;