commit 07e1381d0fe6620532b5db19a83698191ef3f4b4
author David Brown <david.brown@linaro.org> Thu Jan 09 11:34:58 2020 -0700
committer David Brown <davidb@davidb.org> Thu Jan 23 12:47:05 2020 -0700
tree 58940686d51aa0fcbcd8a930a953d31878cf64bd
parent 2d1bac164f4299cbe7ad2859ac18351f6c32a616

Add a capability for querying downgrade prevention

Signed-off-by: Håkon Øye Amundsen <haakon.amundsen@nordicsemi.no>
Signed-off-by: David Brown <david.brown@linaro.org>

boot/bootutil/include/bootutil/caps.h

diff --git a/boot/bootutil/include/bootutil/caps.h b/boot/bootutil/include/bootutil/caps.h
index 553fa5d..3205fa2 100644
--- a/boot/bootutil/include/bootutil/caps.h
+++ b/boot/bootutil/include/bootutil/caps.h
@@ -44,6 +44,7 @@
 #define BOOTUTIL_CAP_ED25519                (1<<9)
 #define BOOTUTIL_CAP_ENC_EC256              (1<<10)
 #define BOOTUTIL_CAP_SWAP_USING_MOVE        (1<<11)
+#define BOOTUTIL_CAP_DOWNGRADE_PREVENTION   (1<<12)
 
 /*
  * Query the number of images this bootloader is configured for.  This

boot/bootutil/src/caps.c

diff --git a/boot/bootutil/src/caps.c b/boot/bootutil/src/caps.c
index 0ca7b8c..c15ecb5 100644
--- a/boot/bootutil/src/caps.c
+++ b/boot/bootutil/src/caps.c
@@ -57,6 +57,9 @@
 #if defined(MCUBOOT_VALIDATE_PRIMARY_SLOT)
     res |= BOOTUTIL_CAP_VALIDATE_PRIMARY_SLOT;
 #endif
+#if defined(MCUBOOT_DOWNGRADE_PREVENTION)
+    res |= BOOTUTIL_CAP_DOWNGRADE_PREVENTION;
+#endif
 
     return res;
 }