sandbox: Plumb in Chrome OS EC emulation

Add board code to set up the Chrome OS EC on startup.
Signed-off-by: NSimon Glass <sjg@chromium.org>

board/sandbox/sandbox/sandbox.c

@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <cros_ec.h>
 #include <dm.h>
 #include <os.h>
 
@@ -33,3 +34,32 @@ int dram_init(void)
 	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
 	return 0;
 }
+
+int arch_early_init_r(void)
+{
+#ifdef CONFIG_CROS_EC
+	if (cros_ec_board_init()) {
+		printf("%s: Failed to init EC\n", __func__);
+		return 0;
+	}
+#endif
+
+	return 0;
+}
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	if (cros_ec_get_error()) {
+		/* Force console on */
+		gd->flags &= ~GD_FLG_SILENT;
+
+		printf("cros-ec communications failure %d\n",
+		       cros_ec_get_error());
+		puts("\nPlease reset with Power+Refresh\n\n");
+		panic("Cannot init cros-ec device");
+		return -1;
+	}
+	return 0;
+}
+#endif