auto import from //depot/cupcake/@135843
diff --git a/toolbox/rotatefb.c b/toolbox/rotatefb.c
new file mode 100644
index 0000000..2ff4127
--- /dev/null
+++ b/toolbox/rotatefb.c
@@ -0,0 +1,71 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <errno.h>
+#include <linux/fb.h>
+
+
+int rotatefb_main(int argc, char *argv[])
+{
+ int c;
+ char *fbdev = "/dev/graphics/fb0";
+ int rotation = 0;
+ int fd;
+ int res;
+ struct fb_var_screeninfo fbinfo;
+
+ do {
+ c = getopt(argc, argv, "d:");
+ if (c == EOF)
+ break;
+ switch (c) {
+ case 'd':
+ fbdev = optarg;
+ break;
+ case '?':
+ fprintf(stderr, "%s: invalid option -%c\n",
+ argv[0], optopt);
+ exit(1);
+ }
+ } while (1);
+
+ if(optind + 1 != argc) {
+ fprintf(stderr, "%s: specify rotation\n", argv[0]);
+ exit(1);
+ }
+ rotation = atoi(argv[optind]);
+
+ fd = open(fbdev, O_RDWR);
+ if(fd < 0) {
+ fprintf(stderr, "cannot open %s\n", fbdev);
+ return 1;
+ }
+
+ res = ioctl(fd, FBIOGET_VSCREENINFO, &fbinfo);
+ if(res < 0) {
+ fprintf(stderr, "failed to get fbinfo: %s\n", strerror(errno));
+ return 1;
+ }
+ if((fbinfo.rotate ^ rotation) & 1) {
+ unsigned int xres = fbinfo.yres;
+ fbinfo.yres = fbinfo.xres;
+ fbinfo.xres = xres;
+ fbinfo.xres_virtual = fbinfo.xres;
+ fbinfo.yres_virtual = fbinfo.yres * 2;
+ if(fbinfo.yoffset == xres)
+ fbinfo.yoffset = fbinfo.yres;
+ }
+ fbinfo.rotate = rotation;
+ res = ioctl(fd, FBIOPUT_VSCREENINFO, &fbinfo);
+ if(res < 0) {
+ fprintf(stderr, "failed to set fbinfo: %s\n", strerror(errno));
+ return 1;
+ }
+
+ return 0;
+}