X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=doc%2FREADME.autoboot;h=2042fe5c4063b95e791cbbd29744f85665782e10;hb=e389a377ee3ad8d137c9af749ddf2354be0d4a7c;hp=e4c41867351a2233bc623c753adc00eaf3919dd1;hpb=8b74bf31fe57edfc502f94e905977304eac943ca;p=u-boot

diff --git a/doc/README.autoboot b/doc/README.autoboot
index e4c4186735..2042fe5c40 100644
--- a/doc/README.autoboot
+++ b/doc/README.autoboot
@@ -114,10 +114,17 @@ What they do
 	CONFIG_AUTOBOOT_PROMPT is displayed before the boot delay
 	selected by CONFIG_BOOTDELAY starts. If it is not defined
 	there is no output indicating that autoboot is in progress.
-	If "%d" is included, it is replaced by the number of seconds
-	remaining before autoboot will start, but it does not count
-	down the seconds. "autoboot in %d seconds\n" is a reasonable
-	prompt.
+
+	Note that CONFIG_AUTOBOOT_PROMPT is used as the (only)
+	argument to a printf() call, so it may contain '%' format
+	specifications, provided that it also includes, sepearated by
+	commas exactly like in a printf statement, the required
+	arguments. It is the responsibility of the user to select only
+	such arguments that are valid in the given context. A
+	reasonable prompt could be defined as
+
+		#define CONFIG_AUTOBOOT_PROMPT \
+			"autoboot in %d seconds\n",bootdelay
 
 	If CONFIG_AUTOBOOT_DELAY_STR or "bootdelaykey" is specified
 	and this string is received from console input before