Merge "Remove support for Cupcake kernels."

static int overscan_offset_x = 0;

static int overscan_offset_y = 0;

static int gr_vt_fd = -1;

static unsigned char gr_current_r = 255;

static unsigned char gr_current_g = 255;

static unsigned char gr_current_b = 255;

{

    gr_init_font();

    gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC);

    if (gr_vt_fd < 0) {

        // This is non-fatal; post-Cupcake kernels don't have tty0.

        perror("can't open /dev/tty0");

    } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) {

        // However, if we do open tty0, we expect the ioctl to work.

        perror("failed KDSETMODE to KD_GRAPHICS on tty0");

        gr_exit();

        return -1;

    }

    gr_backend = open_adf();

    if (gr_backend) {

        gr_draw = gr_backend->init(gr_backend);

void gr_exit(void)

{

    gr_backend->exit(gr_backend);

    ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);

    close(gr_vt_fd);

    gr_vt_fd = -1;

}

int gr_fb_width(void)