Since boot image header version 3 and 4 introduced vendor boot image, the following functions are used to fill the generic android structure : andr_image_data:
- android_boot_image_v3_v4_parse_hdr() - android_vendor_boot_image_v3_v4_parse_hdr()
android_image_get_data() is then updated to support v3 and v4
Signed-off-by: Safae Ouajih souajih@baylibre.com --- boot/image-android.c | 80 +++++++++++++++++++++++++++++++++++++++-- include/android_image.h | 3 ++ include/image.h | 1 + 3 files changed, 81 insertions(+), 3 deletions(-)
diff --git a/boot/image-android.c b/boot/image-android.c index 66922355e5..0e78ca0dac 100644 --- 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_vendor_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 5b36f96d7b..351e17750e 100644 --- a/include/android_image.h +++ b/include/android_image.h @@ -323,6 +323,8 @@ struct andr_image_data { ulong kernel_ptr; u32 kernel_size; u32 ramdisk_size; + ulong vendor_ramdisk_ptr; + u32 vendor_ramdisk_size; u32 boot_ramdisk_size; ulong second_ptr; u32 second_size; @@ -342,6 +344,7 @@ struct andr_image_data { ulong tags_addr; u32 header_version; u32 boot_img_total_size; + u32 vendor_boot_img_total_size; };
#endif diff --git a/include/image.h b/include/image.h index df8a9075fa..a1a14403d5 100644 --- a/include/image.h +++ b/include/image.h @@ -1760,6 +1760,7 @@ void android_print_contents(const struct andr_boot_img_hdr_v0 *hdr); bool android_image_print_dtb_contents(ulong hdr_addr); #endif bool is_android_boot_image_header(const struct andr_boot_img_hdr_v0 *hdr); +bool is_android_vendor_boot_image_header(const void *vendor_boot_img);
/** * board_fit_config_name_match() - Check for a matching board name