1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/lib32/bootu.c b/arch/arm/lib32/bootu.c
new file mode 100644
index 0000000000..d811da39ce
--- /dev/null
+++ b/arch/arm/lib32/bootu.c
@@ -0,0 +1,44 @@
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <of.h>
+#include <asm/armlinux.h>
+
+static int do_bootu(int argc, char *argv[])
+{
+	int fd;
+	void *kernel = NULL;
+	void *oftree = NULL;
+
+	if (argc != 2)
+		return COMMAND_ERROR_USAGE;
+
+	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);
+
+#ifdef CONFIG_OFTREE
+	oftree = of_get_fixed_tree(NULL);
+#endif
+
+	start_linux(kernel, 0, 0, 0, oftree, ARM_STATE_SECURE);
+
+	return 1;
+}
+
+static const __maybe_unused char cmd_bootu_help[] =
+"Usage: bootu <address>\n";
+
+BAREBOX_CMD_START(bootu)
+	.cmd            = do_bootu,
+	BAREBOX_CMD_DESC("boot into already loaded Linux kernel")
+	BAREBOX_CMD_OPTS("ADDRESS")
+	BAREBOX_CMD_GROUP(CMD_GRP_BOOT)
+	BAREBOX_CMD_HELP(cmd_bootu_help)
+BAREBOX_CMD_END
+