base-files: allow users to delect debug level during boot

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38909 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 37 insertions, 8 deletions

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 85ebc2aeb1..6f23e0b8b2 100755
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -260,6 +260,26 @@ mtd_get_mac_ascii()
 	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
 }
 
+mtd_get_blob()
+{
+	local mtdname="$1"
+	local offset="$2"
+	local count="$3"
+	local firmware="$4"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_blob: partition $mtdname not found!" >&2
+		return 1
+	fi
+
+	dd if=$part of=$firmware bs=1 skip=$offset count=$count 2>/dev/null || {
+		echo "mtd_get_blob: failed to extract $firmware from $part" >&2
+		return 1
+	}
+}
+
 mtd_get_mac_binary() {
 	local mtdname="$1"
 	local offset="$2"
diff --git a/package/base-files/files/lib/preinit/30_failsafe_wait b/package/base-files/files/lib/preinit/30_failsafe_wait
index 6bce8ae49f..522565940c 100644
--- a/package/base-files/files/lib/preinit/30_failsafe_wait
+++ b/package/base-files/files/lib/preinit/30_failsafe_wait
@@ -5,7 +5,7 @@
 fs_wait_for_key () {
     local timeout=$3
     local timer
-    local do_failsafe
+    local do_keypress
     local keypress_true="$(mktemp)"
     local keypress_wait="$(mktemp)"
     local keypress_sec="$(mktemp)"
@@ -40,6 +40,7 @@ fs_wait_for_key () {
     } &
 
     echo "Press the [$1] key and hit [enter] $2"
+    echo "Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level"
     # if we're on the console we wait for input
     { 
 	while [ -r $keypress_wait ]; do
@@ -48,14 +49,22 @@ fs_wait_for_key () {
 	    [ -n "$timer" ] || timer=1
 	    timer="${timer%%\ *}"
 	    [ $timer -ge 1 ] || timer=1
-	    do_failsafe=""
+	    do_keypress=""
 	    {
-		read -t "$timer" do_failsafe
-		if [ "$do_failsafe" = "$1" ]; then
-		    echo "true" >$keypress_true
-		    lock -u $keypress_wait
-		    rm -f $keypress_wait
- 		fi
+		read -t "$timer" do_keypress
+		case "$do_keypress" in
+		$1)
+			echo "true" >$keypress_true
+			;;
+		1 | 2 | 3 | 4)
+			echo "$do_keypress" >/tmp/debug_level
+			;;
+		*)
+			continue;
+			;;
+		esac
+		lock -u $keypress_wait
+		rm -f $keypress_wait
 	    }
 	done
     }