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    Subject[tip:x86/setup] x86, setup: Store the boot cursor state
    Commit-ID:  d9b263528e01bfbaf716b51f38606b3dfe5ac1e9
    Gitweb: http://git.kernel.org/tip/d9b263528e01bfbaf716b51f38606b3dfe5ac1e9
    Author: Matthew Garrett <mjg@redhat.com>
    AuthorDate: Fri, 13 Nov 2009 14:57:00 -0500
    Committer: H. Peter Anvin <hpa@zytor.com>
    CommitDate: Fri, 13 Nov 2009 14:23:11 -0800

    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>
    ---
    arch/x86/boot/video.c | 6 ++++++
    include/linux/screen_info.h | 5 ++++-
    2 files changed, 10 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
    index d42da38..f767164 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 1ee2c05..899fbb4 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;


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