Add a capability for querying downgrade prevention

d3zd3z · d3zd3z · commit 07e1381d0fe6 · 2020-01-23T12:47:05.000-07:00
Signed-off-by: Håkon Øye Amundsen &lt;haakon.amundsen@nordicsemi.no&gt;
Signed-off-by: David Brown &lt;david.brown@linaro.org&gt;
diff --git a/boot/bootutil/include/bootutil/caps.h b/boot/bootutil/include/bootutil/caps.h
@@ -44,6 +44,7 @@ uint32_t bootutil_get_caps(void);
 #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
diff --git a/boot/bootutil/src/caps.c b/boot/bootutil/src/caps.c
@@ -57,6 +57,9 @@ uint32_t bootutil_get_caps(void)
 #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;
 }

Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,9 @@ uint32_t bootutil_get_caps(void)`
`57`	`57`	`#if defined(MCUBOOT_VALIDATE_PRIMARY_SLOT)`
`58`	`58`	`res \|= BOOTUTIL_CAP_VALIDATE_PRIMARY_SLOT;`
`59`	`59`	`#endif`
	`60`	`+#if defined(MCUBOOT_DOWNGRADE_PREVENTION)`
	`61`	`+ res \|= BOOTUTIL_CAP_DOWNGRADE_PREVENTION;`
	`62`	`+#endif`
`60`	`63`
`61`	`64`	`return res;`
`62`	`65`	`}`