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2009-06-29 Robert Millan <rmh.grub@aybabtu.com>

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* include/grub/i386/linux.h (GRUB_VIDEO_TYPE_TEXT): New macro.

        * loader/i386/linux.c [__i386__] (grub_linux_boot): Simplify inline
        assembly in final jump, using register constraints.

        (grub_linux_boot): For text mode, initialize `have_vga' using
        GRUB_VIDEO_TYPE_TEXT rather than 0 (this changes its value to 1).

        Initialize `video_cursor_x' and `video_cursor_y' as late as possible,
        right before the final jump.

        Set `video_mode' to 0x3.

        Document initialization of `video_page', `video_mode' and
        `video_ega_bx'.
This commit is contained in:
robertmh 2009-06-29 17:19:35 +00:00
parent c6fe4d5328
commit b09db61ddd
3 changed files with 33 additions and 5 deletions
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include/grub/i386/linux.h
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@ -79,6 +79,7 @@ struct grub_e820_mmap
grub_uint32_t type;
} __attribute__((packed));
#define GRUB_VIDEO_TYPE_TEXT 0x01
#define GRUB_VIDEO_TYPE_VLFB 0x23 /* VESA VGA in graphic mode */
#define GRUB_VIDEO_TYPE_EFI 0x70