diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 8165aeabf..9383ae147 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -1,6 +1,7 @@
 obj-$(CONFIG_ARM_LINUX)	+= armlinux.o
 obj-$(CONFIG_CMD_BOOTM)	+= bootm.o
 obj-$(CONFIG_CMD_BOOTZ)	+= bootz.o
+obj-$(CONFIG_CMD_BOOTU)	+= bootu.o
 obj-y	+= div0.o
 obj-y	+= findbit.o
 obj-y	+= arm.o
diff --git a/arch/arm/lib/armlinux.c b/arch/arm/lib/armlinux.c
index bb4bcd3c4..ce1cc6bce 100644
--- a/arch/arm/lib/armlinux.c
+++ b/arch/arm/lib/armlinux.c
@@ -231,36 +231,3 @@ void start_linux(void *adr, int swap, struct image_data *data)
 
 	kernel(0, armlinux_architecture, armlinux_bootparams);
 }
-
-#ifdef CONFIG_CMD_BOOTU
-static int do_bootu(struct command *cmdtp, int argc, char *argv[])
-{
-	void (*theKernel)(int zero, int arch, void *params) = NULL;
-	int fd;
-
-	if (argc != 2) {
-		barebox_cmd_usage(cmdtp);
-		return 1;
-	}
-
-	fd = open(argv[1], O_RDONLY);
-	if (fd > 0)
-		theKernel = (void *)memmap(fd, PROT_READ);
-
-	if (!theKernel)
-		theKernel = (void *)simple_strtoul(argv[1], NULL, 0);
-
-	start_linux(theKernel, 0, NULL);
-
-	return 1;
-}
-
-static const __maybe_unused char cmd_bootu_help[] =
-"Usage: bootu <address>\n";
-
-BAREBOX_CMD_START(bootu)
-	.cmd            = do_bootu,
-	.usage          = "bootu - start a raw linux image",
-	BAREBOX_CMD_HELP(cmd_bootu_help)
-BAREBOX_CMD_END
-#endif /* CONFIG_CMD_BOOTU */
diff --git a/arch/arm/lib/bootu.c b/arch/arm/lib/bootu.c
new file mode 100644
index 000000000..e97ded0e4
--- /dev/null
+++ b/arch/arm/lib/bootu.c
@@ -0,0 +1,38 @@
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <asm/armlinux.h>
+
+static int do_bootu(struct command *cmdtp, int argc, char *argv[])
+{
+	int fd;
+	void *kernel = NULL;
+
+	if (argc != 2) {
+		barebox_cmd_usage(cmdtp);
+		return 1;
+	}
+
+	fd = open(argv[1], O_RDONLY);
+	if (fd > 0)
+		kernel = (void *)memmap(fd, PROT_READ);
+
+	if (!kernel)
+		kernel = (void *)simple_strtoul(argv[1], NULL, 0);
+
+	start_linux(kernel, 0, NULL);
+
+	return 1;
+}
+
+static const __maybe_unused char cmd_bootu_help[] =
+"Usage: bootu <address>\n";
+
+BAREBOX_CMD_START(bootu)
+	.cmd            = do_bootu,
+	.usage          = "bootu - start a raw linux image",
+	BAREBOX_CMD_HELP(cmd_bootu_help)
+BAREBOX_CMD_END
+