GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/common/main.c

@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ */
+
+/* #define	DEBUG	*/
+
+#include <common.h>
+#include <autoboot.h>
+#include <cli.h>
+#include <command.h>
+#include <console.h>
+#include <env.h>
+#include <version.h>
+
+/*
+ * Board-specific Platform code can reimplement show_boot_progress () if needed
+ */
+__weak void show_boot_progress(int val) {}
+
+static void run_preboot_environment_command(void)
+{
+	char *p;
+
+	p = env_get("preboot");
+	if (p != NULL) {
+		int prev = 0;
+
+		if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
+			prev = disable_ctrlc(1); /* disable Ctrl-C checking */
+
+		run_command_list(p, -1, 0);
+
+		if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
+			disable_ctrlc(prev);	/* restore Ctrl-C checking */
+	}
+}
+
+/* We come here after U-Boot is initialised and ready to process commands */
+void main_loop(void)
+{
+	const char *s;
+
+	bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
+
+	if (IS_ENABLED(CONFIG_VERSION_VARIABLE))
+		env_set("ver", version_string);  /* set version variable */
+
+	cli_init();
+
+	if (IS_ENABLED(CONFIG_USE_PREBOOT))
+		run_preboot_environment_command();
+
+	if (IS_ENABLED(CONFIG_UPDATE_TFTP))
+		update_tftp(0UL, NULL, NULL);
+
+	s = bootdelay_process();
+	if (cli_process_fdt(&s))
+		cli_secure_boot_cmd(s);
+#ifdef CONFIG_AUTOBOOT
+	autoboot_command(s);
+#else
+	board_run_command(NULL);
+#endif
+
+	cli_loop();
+	panic("No CLI available");
+}