sandbox: Add instructions about building on 32-bit machines
Sandbox is built with 64-bit ints by default. This doesn't work properly on
32-bit machines.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index 4de89f8..197d8bb 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -27,7 +27,10 @@
#define CONFIG_SYS_STDIO_DEREGISTER
-/* Number of bits in a C 'long' on this architecture */
+/*
+ * Number of bits in a C 'long' on this architecture. Set this to 32 when
+ * building on a 32-bit machine.
+ */
#define CONFIG_SANDBOX_BITS_PER_LONG 64
#define CONFIG_LMB