From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/lib/libavb/avb_footer.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 roms/u-boot/lib/libavb/avb_footer.c
(limited to 'roms/u-boot/lib/libavb/avb_footer.c')
diff --git a/roms/u-boot/lib/libavb/avb_footer.c b/roms/u-boot/lib/libavb/avb_footer.c
new file mode 100644
index 000000000..697a71521
--- /dev/null
+++ b/roms/u-boot/lib/libavb/avb_footer.c
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ */
+
+#include "avb_footer.h"
+#include "avb_util.h"
+
+bool avb_footer_validate_and_byteswap(const AvbFooter* src, AvbFooter* dest) {
+ avb_memcpy(dest, src, sizeof(AvbFooter));
+
+ dest->version_major = avb_be32toh(dest->version_major);
+ dest->version_minor = avb_be32toh(dest->version_minor);
+
+ dest->original_image_size = avb_be64toh(dest->original_image_size);
+ dest->vbmeta_offset = avb_be64toh(dest->vbmeta_offset);
+ dest->vbmeta_size = avb_be64toh(dest->vbmeta_size);
+
+ /* Check that magic is correct. */
+ if (avb_safe_memcmp(dest->magic, AVB_FOOTER_MAGIC, AVB_FOOTER_MAGIC_LEN) !=
+ 0) {
+ avb_error("Footer magic is incorrect.\n");
+ return false;
+ }
+
+ /* Ensure we don't attempt to access any fields if the footer major
+ * version is not supported.
+ */
+ if (dest->version_major > AVB_FOOTER_VERSION_MAJOR) {
+ avb_error("No support for footer version.\n");
+ return false;
+ }
+
+ return true;
+}
--
cgit