sandbox: Add documentation on how to run valgrind
U-Boot sandbox can run with valgrind to check memory allocations. Add
documentation on how to do this.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/sandbox/README.sandbox b/board/sandbox/README.sandbox
index 5e8fa58b..c10dd44 100644
--- a/board/sandbox/README.sandbox
+++ b/board/sandbox/README.sandbox
@@ -442,6 +442,20 @@
environment variable to the correct pathname before building U-Boot.
+Using valgrind / memcheck
+-------------------------
+
+It is possible to run U-Boot under valgrind to check memory allocations:
+
+ valgrind u-boot
+
+If you are running sandbox SPL or TPL, then valgrind will not by default
+notice when U-Boot jumps from TPL to SPL, or from SPL to U-Boot proper. To
+fix this, use:
+
+ valgrind --trace-children=yes u-boot
+
+
Testing
-------