Allow u-boot to be silent without forcing Linux to be

That's a bit presumptuous of you, u-boot!

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

common/cmd_bootm.c

@@ -88,7 +88,7 @@ static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 #include <linux/err.h>
 #include <nand.h>
 
-#ifdef CONFIG_SILENT_CONSOLE
+#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 static void fixup_silent_linux(void);
 #endif
 
@@ -694,7 +694,7 @@ int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 	bootstage_mark(BOOTSTAGE_ID_CHECK_BOOT_OS);
 
-#ifdef CONFIG_SILENT_CONSOLE
+#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 	if (images.os.os == IH_OS_LINUX)
 		fixup_silent_linux();
 #endif
@@ -1413,7 +1413,7 @@ U_BOOT_CMD(
 /*******************************************************************/
 /* helper routines */
 /*******************************************************************/
-#ifdef CONFIG_SILENT_CONSOLE
+#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 static void fixup_silent_linux(void)
 {
 	char buf[256], *start, *end;
@@ -1806,7 +1806,7 @@ static int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	usb_stop();
 #endif
 
-#ifdef CONFIG_SILENT_CONSOLE
+#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 	fixup_silent_linux();
 #endif
 	arch_preboot_os();

doc/README.silent

@@ -23,4 +23,6 @@ The following actions are taken if "silent" is set at boot time:
 
  - When booting a linux kernel, the "bootargs" are fixed up so that
    the argument "console=" will be in the command line, no matter how
-   it was set in "bootargs" before.
+   it was set in "bootargs" before. If you don't want the linux command
+   line to be affected, define CONFIG_SILENT_U_BOOT_ONLY in your board
+   config file as well, and this part of the feature will be disabled.