sandbox: Don't try distro_bootcmd by default

For the distro_bootcmds to succeed on the sandbox a bit of setup is
required (e.g. network configured or host image bound), so running them
by default isn't that useful.

Add a -b/--boot command to the sandbox binary, which triggers the
distro_bootcmds to run after the other command-line commands.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Simon Glass <sjg@chromium.org>

arch/sandbox/cpu/start.c

@@ -77,12 +77,18 @@ int sandbox_main_loop_init(void)
 	struct sandbox_state *state = state_get_current();
 
 	/* Execute command if required */
-	if (state->cmd) {
-		int retval;
+	if (state->cmd || state->run_distro_boot) {
+		int retval = 0;
 
 		cli_init();
 
+		if (state->cmd)
 			retval = run_command_list(state->cmd, -1, 0);
+
+		if (state->run_distro_boot)
+			retval = cli_simple_run_command("run distro_bootcmd",
+							0);
+
 		if (!state->interactive)
 			os_exit(retval);
 	}
@@ -90,6 +96,14 @@ int sandbox_main_loop_init(void)
 	return 0;
 }
 
+static int sandbox_cmdline_cb_boot(struct sandbox_state *state,
+				      const char *arg)
+{
+	state->run_distro_boot = true;
+	return 0;
+}
+SANDBOX_CMDLINE_OPT_SHORT(boot, 'b', 0, "Run distro boot commands");
+
 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
 				      const char *arg)
 {

arch/sandbox/include/asm/state.h

@@ -42,6 +42,7 @@ struct sandbox_spi_info {
 struct sandbox_state {
 	const char *cmd;		/* Command to execute */
 	bool interactive;		/* Enable cmdline after execute */
+	bool run_distro_boot;		/* Automatically run distro bootcommands */
 	const char *fdt_fname;		/* Filename of FDT binary */
 	const char *parse_err;		/* Error to report from parsing */
 	int argc;			/* Program arguments */

include/configs/sandbox.h

@@ -125,6 +125,8 @@
 	func(HOST, host, 1) \
 	func(HOST, host, 0)
 
+#define CONFIG_BOOTCOMMAND ""
+
 #include <config_distro_bootcmd.h>
 
 #define CONFIG_KEEP_SERVERADDR