diff --git a/board/a9m2410/a9m2410.c b/board/a9m2410/a9m2410.c
index bc10241fc..8d41291b9 100644
--- a/board/a9m2410/a9m2410.c
+++ b/board/a9m2410/a9m2410.c
@@ -258,4 +258,19 @@ This CPU card is based on a Samsung S3C2410 CPU. The card is shipped with:
 - SPI interface
 - JTAG interface
 
+How to get the binary image:
+
+Using the default configuration:
+
+@code
+make ARCH=arm a9m2410_defconfig
+@endcode
+
+Build the binary image:
+
+@code
+make ARCH=arm CROSS_COMPILE=armv4compiler
+@endcode
+
+@note replace the armv4compiler with your ARM v4 cross compiler.
 */
diff --git a/board/a9m2440/a9m2440.c b/board/a9m2440/a9m2440.c
index 43ec75b93..4f52a85b2 100644
--- a/board/a9m2440/a9m2440.c
+++ b/board/a9m2440/a9m2440.c
@@ -235,4 +235,20 @@ This CPU card is based on a Samsung S3C2440 CPU. The card is shipped with:
 - SPI interface
 - JTAG interface
 
+How to get the binary image:
+
+Using the default configuration:
+
+@code
+make ARCH=arm a9m2440_defconfig
+@endcode
+
+Build the binary image:
+
+@code
+make ARCH=arm CROSS_COMPILE=armv4compiler
+@endcode
+
+@note replace the armv4compiler with your ARM v4 cross compiler.
+
 */