android: boot: update android_image_get_data to support v3, v4

Since boot image header version 3 and 4 introduced vendor boot image,
use the following functions to fill the generic android
structure : andr_image_data:

 - android_boot_image_v3_v4_parse_hdr()
 - android_vendor_boot_image_v3_v4_parse_hdr()

Update android_image_get_data() to support v3 and v4

Signed-off-by: Safae Ouajih <souajih@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

diff --git a/boot/image-android.c b/boot/image-android.c
index f16eebff49ed1ac24cfe75dab5ab7c83332214a5..712d437766b35e2e5a4134a8b93f12a61a1896c6 100644 (file)
--- a/boot/image-android.c
+++ b/boot/image-android.c
@@ -18,6 +18,65 @@
 
 static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1];
 
+static void android_boot_image_v3_v4_parse_hdr(const struct andr_boot_img_hdr_v3 *hdr,
+                                              struct andr_image_data *data)
+{
+       ulong end;
+
+       data->kcmdline = hdr->cmdline;
+       data->header_version = hdr->header_version;
+
+       /*
+        * The header takes a full page, the remaining components are aligned
+        * on page boundary.
+        */
+       end = (ulong)hdr;
+       end += ANDR_GKI_PAGE_SIZE;
+       data->kernel_ptr = end;
+       data->kernel_size = hdr->kernel_size;
+       end += ALIGN(hdr->kernel_size, ANDR_GKI_PAGE_SIZE);
+       data->ramdisk_size = hdr->ramdisk_size;
+       data->boot_ramdisk_size = hdr->ramdisk_size;
+       end += ALIGN(hdr->ramdisk_size, ANDR_GKI_PAGE_SIZE);
+
+       if (hdr->header_version > 3)
+               end += ALIGN(hdr->signature_size, ANDR_GKI_PAGE_SIZE);
+
+       data->boot_img_total_size = end - (ulong)hdr;
+}
+
+static void android_vendor_boot_image_v3_v4_parse_hdr(const struct andr_vnd_boot_img_hdr
+                                                     *hdr, struct andr_image_data *data)
+{
+       ulong end;
+
+       /*
+        * The header takes a full page, the remaining components are aligned
+        * on page boundary.
+        */
+       data->tags_addr = hdr->tags_addr;
+       data->image_name = hdr->name;
+       data->kernel_addr = hdr->kernel_addr;
+       data->ramdisk_addr = hdr->ramdisk_addr;
+       data->dtb_load_addr = hdr->dtb_addr;
+       end = (ulong)hdr;
+       end += hdr->page_size;
+       if (hdr->vendor_ramdisk_size) {
+               data->vendor_ramdisk_ptr = end;
+               data->vendor_ramdisk_size = hdr->vendor_ramdisk_size;
+               data->ramdisk_size += hdr->vendor_ramdisk_size;
+               end += ALIGN(hdr->vendor_ramdisk_size, hdr->page_size);
+       }
+
+       data->dtb_ptr = end;
+       data->dtb_size = hdr->dtb_size;
+
+       end += ALIGN(hdr->dtb_size, hdr->page_size);
+       end += ALIGN(hdr->vendor_ramdisk_table_size, hdr->page_size);
+       end += ALIGN(hdr->bootconfig_size, hdr->page_size);
+       data->vendor_boot_img_total_size = end - (ulong)hdr;
+}
+
 static void android_boot_image_v0_v1_v2_parse_hdr(const struct andr_boot_img_hdr_v0 *hdr,
                                                  struct andr_image_data *data)
 {
@@ -79,10 +138,20 @@ bool android_image_get_data(const void *boot_hdr, const void *vendor_boot_hdr,
                return false;
        }
 
-       if (((struct andr_boot_img_hdr_v0 *)boot_hdr)->header_version > 2)
-               printf("Only boot image header version 2 and below are supported\n");
-       else
+       if (((struct andr_boot_img_hdr_v0 *)boot_hdr)->header_version > 2) {
+               if (!vendor_boot_hdr) {
+                       printf("For boot header v3+ vendor boot image has to be provided\n");
+                       return false;
+               }
+               if (!is_android_vendor_boot_image_header(vendor_boot_hdr)) {
+                       printf("Incorrect vendor boot image header\n");
+                       return false;
+               }
+               android_boot_image_v3_v4_parse_hdr(boot_hdr, data);
+               android_vendor_boot_image_v3_v4_parse_hdr(vendor_boot_hdr, data);
+       } else {
                android_boot_image_v0_v1_v2_parse_hdr(boot_hdr, data);
+       }
 
        return true;
 }
@@ -200,6 +269,11 @@ int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr,
        return 0;
 }
 
+bool is_android_vendor_boot_image_header(const void *vendor_boot_img)
+{
+       return !memcmp(VENDOR_BOOT_MAGIC, vendor_boot_img, ANDR_VENDOR_BOOT_MAGIC_SIZE);
+}
+
 bool is_android_boot_image_header(const struct andr_boot_img_hdr_v0 *hdr)
 {
        return !memcmp(ANDR_BOOT_MAGIC, hdr, ANDR_BOOT_MAGIC_SIZE);

diff --git a/include/android_image.h b/include/android_image.h
index fb3a9d9858b5934f0cdd573a516d79ec6a88f019..99e780350820216fc259ba5216b2057bdd4a5652 100644 (file)
--- a/include/android_image.h
+++ b/include/android_image.h
@@ -323,6 +323,8 @@ struct andr_image_data {
        ulong kernel_ptr;  /* kernel address */
        u32 kernel_size;  /* size in bytes */
        u32 ramdisk_size;  /* size in bytes */
+       ulong vendor_ramdisk_ptr;  /* vendor ramdisk address */
+       u32 vendor_ramdisk_size;  /* vendor ramdisk size*/
        u32 boot_ramdisk_size;  /* size in bytes */
        ulong second_ptr;  /* secondary bootloader address */
        u32 second_size;  /* secondary bootloader size */
@@ -342,6 +344,7 @@ struct andr_image_data {
        ulong tags_addr;  /* physical addr for kernel tags */
        u32 header_version;  /* version of the boot image header */
        u32 boot_img_total_size;  /* boot image size */
+       u32 vendor_boot_img_total_size;  /* vendor boot image size */
 };
 
 #endif

diff --git a/include/image.h b/include/image.h
index f84c03f08fb3a932c36c234c1ce4a359771c8bcd..c2e751c1364cd7c2d0d8fdeb93a957f9eed45e40 100644 (file)
--- a/include/image.h
+++ b/include/image.h
@@ -1876,6 +1876,17 @@ bool android_image_print_dtb_contents(ulong hdr_addr);
  */
 bool is_android_boot_image_header(const struct andr_boot_img_hdr_v0 *hdr);
 
+/**
+ * is_android_vendor_boot_image_header() - Check the magic of vendor boot image
+ *
+ * This checks the header of Android vendor boot image and verifies the magic
+ * is "VNDRBOOT"
+ *
+ * @vendor_boot_img: Pointer to boot image
+ * Return: non-zero if the magic is correct, zero otherwise
+ */
+bool is_android_vendor_boot_image_header(const void *vendor_boot_img);
+
 /**
  * board_fit_config_name_match() - Check for a matching board name
  *