MIPS: bootm.c: separate linux jump code

Move the actual jump code into a separate function.
This make the code reusable for bootm subcommands.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>

arch/mips/lib/bootm.c

@@ -43,10 +43,27 @@ static int linux_env_idx;
 static void linux_params_init(ulong start, char *commandline);
 static void linux_env_set(char *env_name, char *env_val);
 
+static void boot_jump_linux(bootm_headers_t *images)
+{
+	void (*theKernel) (int, char **, char **, int *);
+
+	/* find kernel entry point */
+	theKernel = (void (*)(int, char **, char **, int *))images->ep;
+
+	debug("## Transferring control to Linux (at address %08lx) ...\n",
+		(ulong) theKernel);
+
+	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
+
+	/* we assume that the kernel is in place */
+	printf("\nStarting kernel ...\n\n");
+
+	theKernel(linux_argc, linux_argv, linux_env, 0);
+}
+
 int do_bootm_linux(int flag, int argc, char * const argv[],
 			bootm_headers_t *images)
 {
-	void (*theKernel) (int, char **, char **, int *);
 	char *commandline = getenv("bootargs");
 	char env_buf[12];
 	char *cp;
@@ -54,14 +71,6 @@ int do_bootm_linux(int flag, int argc, char * const argv[],
 	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
 		return 1;
 
-	/* find kernel entry point */
-	theKernel = (void (*)(int, char **, char **, int *))images->ep;
-
-	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
-
-	debug("## Transferring control to Linux (at address %08lx) ...\n",
-		(ulong) theKernel);
-
 	linux_params_init(UNCACHED_SDRAM(gd->bd->bi_boot_params), commandline);
 
 #ifdef CONFIG_MEMSIZE_IN_BYTES
@@ -95,10 +104,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[],
 	if (cp)
 		linux_env_set("eth1addr", cp);
 
-	/* we assume that the kernel is in place */
-	printf("\nStarting kernel ...\n\n");
-
-	theKernel(linux_argc, linux_argv, linux_env, 0);
+	boot_jump_linux(images);
 
 	/* does not return */
 	return 1;