auto import from //depot/cupcake/@135843
diff --git a/fastboot/bootimg.c b/fastboot/bootimg.c
new file mode 100644
index 0000000..1d77b3c
--- /dev/null
+++ b/fastboot/bootimg.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <bootimg.h>
+
+void bootimg_set_cmdline(boot_img_hdr *h, const char *cmdline)
+{
+ strcpy((char*) h->cmdline, cmdline);
+}
+
+boot_img_hdr *mkbootimg(void *kernel, unsigned kernel_size,
+ void *ramdisk, unsigned ramdisk_size,
+ void *second, unsigned second_size,
+ unsigned page_size,
+ unsigned *bootimg_size)
+{
+ unsigned kernel_actual;
+ unsigned ramdisk_actual;
+ unsigned second_actual;
+ unsigned page_mask;
+ boot_img_hdr *hdr;
+
+ page_mask = page_size - 1;
+
+ kernel_actual = (kernel_size + page_mask) & (~page_mask);
+ ramdisk_actual = (ramdisk_size + page_mask) & (~page_mask);
+ second_actual = (second_size + page_mask) & (~page_mask);
+
+ *bootimg_size = page_size + kernel_actual + ramdisk_actual + second_actual;
+
+ hdr = calloc(*bootimg_size, 1);
+
+ if(hdr == 0) {
+ return hdr;
+ }
+
+ memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
+
+ hdr->kernel_size = kernel_size;
+ hdr->kernel_addr = 0x10008000;
+ hdr->ramdisk_size = ramdisk_size;
+ hdr->ramdisk_addr = 0x11000000;
+ hdr->second_size = second_size;
+ hdr->second_addr = 0x10F00000;
+
+ hdr->tags_addr = 0x10000100;
+ hdr->page_size = page_size;
+
+ memcpy(hdr->magic + page_size,
+ kernel, kernel_size);
+ memcpy(hdr->magic + page_size + kernel_actual,
+ ramdisk, ramdisk_size);
+ memcpy(hdr->magic + page_size + kernel_actual + ramdisk_actual,
+ second, second_size);
+ return hdr;
+}