sandbox: Reduce keyed autoboot delay

The autoboot tests are a recent addition to U-Boot, providing much-needed
coverage in this area.

A side effect of the keyed autoboot test is that this feature is enabled
in sandbox always. This changes the autoboot prompt and confuses the
pytests. Some tests become slower, for example the vboot tests take about
27s now instead of 3s.

We don't actually need this feature enabled to be able to run the tests.
Add a switch to allow sandbox to turn it on and off as needed. Use this
in the one test that needs it.

Add a command-line flag in case this is desired in normal use.

Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 25c8b9f298e ("test: add first autoboot unit tests")
Reviewed-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>

2 files changed, 27 insertions, 0 deletions

diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c
index 777db4e952..a74f5ec7ba 100644
--- a/arch/sandbox/cpu/start.c
+++ b/arch/sandbox/cpu/start.c
@@ -400,6 +400,15 @@ static int sandbox_cmdline_cb_signals(struct sandbox_state *state,
 SANDBOX_CMDLINE_OPT_SHORT(signals, 'S', 0,
 			  "Handle signals (such as SIGSEGV) in sandbox");
 
+static int sandbox_cmdline_cb_autoboot_keyed(struct sandbox_state *state,
+					     const char *arg)
+{
+	state->autoboot_keyed = true;
+
+	return 0;
+}
+SANDBOX_CMDLINE_OPT(autoboot_keyed, 0, "Allow keyed autoboot");
+
 static void setup_ram_buf(struct sandbox_state *state)
 {
 	/* Zero the RAM buffer if we didn't read it, to keep valgrind happy */
diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
index a4d99bade4..4e822538ba 100644
--- a/arch/sandbox/cpu/state.c
+++ b/arch/sandbox/cpu/state.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <autoboot.h>
 #include <bloblist.h>
 #include <errno.h>
 #include <fdtdec.h>
@@ -378,6 +379,23 @@ void state_reset_for_test(struct sandbox_state *state)
 	state->next_tag = state->ram_size;
 }
 
+bool autoboot_keyed(void)
+{
+	struct sandbox_state *state = state_get_current();
+
+	return IS_ENABLED(CONFIG_AUTOBOOT_KEYED) && state->autoboot_keyed;
+}
+
+bool autoboot_set_keyed(bool autoboot_keyed)
+{
+	struct sandbox_state *state = state_get_current();
+	bool old_val = state->autoboot_keyed;
+
+	state->autoboot_keyed = autoboot_keyed;
+
+	return old_val;
+}
+
 int state_init(void)
 {
 	state = &main_state;