download: Add --help in the individual download scripts

This doesn't change the existing usage of the scripts:
- For the Coreboot script, before this change, all arguments that were
  passed were considered as board to download the Coreboot source code
  for.

  Here we added the '--help' and '--list-boards' arguments, so it
  should not be an issue as it is extremely unlikely that a board
  would be called '--help' or '--list-boards'.

- All the other scripts don't use any arguments so passing --help
  should not conflict with the existing usage.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

download

@@ -60,6 +60,9 @@ help() {
 	coreboot trees by default, but './download coreboot x60' will only download
 	the coreboot tree required for the target: x60
 
+	Each program download script should also accept the --help paramater to
+	display the usage of the script.
+
 	Refer to the documentation for more information.
 	EOF
 }

resources/scripts/download/coreboot

@@ -21,6 +21,42 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+list_supported_boards()
+{
+	for board in resources/coreboot/*; do
+		echo $board | sed 's#resources/coreboot/##'
+	done
+}
+
+usage()
+{
+	progname="./download coreboot"
+	printf "Usage:\n"
+	printf "\t%s                     # %s\n" \
+	       "${progname}" \
+	       "Download and deblob Coreboot for all the boards"
+	printf "\t%s [board [board] ...] # %s\n" \
+	       "${progname}" \
+	       "Download and deblob Coreboot for the given boards"
+	printf "\t%s --list-boards       # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+	printf "\t%s --help              # %s\n" \
+	       "${progname}" \
+	       "List supported boards"
+	printf "\t%s --help              # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -eq 1 -a "$1" == "--help" ] ; then
+	usage
+	exit 0
+elif [ $# -eq 1 -a "$1" == "--list-boards" ] ; then
+	list_supported_boards
+	exit 0
+fi
+
 # set this when you want to modify each coreboot tree
 # for example, you want to test custom patches
 # NODELETE= ./download coreboot

resources/scripts/download/flashrom

@@ -21,6 +21,23 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+usage()
+{
+	progname="./download flashrom"
+	printf "Usage:\n"
+	printf "\t%s         # %s\n" \
+	       "${progname}" \
+	       "Download flashrom"
+	printf "\t%s --help  # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -ne 0 ] ; then
+	usage
+	exit 0
+fi
+
 # Get flashrom at the last previously tested revision
 
 # Remove the old version that may still exist:

resources/scripts/download/grub

@@ -21,6 +21,23 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+usage()
+{
+	progname="./download grub"
+	printf "Usage:\n"
+	printf "\t%s         # %s\n" \
+	       "${progname}" \
+	       "Download GRUB"
+	printf "\t%s --help  # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -ne 0 ] ; then
+	usage
+	exit 0
+fi
+
 # Remove the old version that may still exist
 # ------------------------------------------------------------------------------
 

resources/scripts/download/ich9utils

@@ -21,6 +21,23 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+usage()
+{
+	progname="./download ich9utils"
+	printf "Usage:\n"
+	printf "\t%s         # %s\n" \
+	       "${progname}" \
+	       "Download ich9utils"
+	printf "\t%s --help  # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -ne 0 ] ; then
+	usage
+	exit 0
+fi
+
 printf "Downloading ich9utils\n"
 
 if [ -d ich9utils ]; then

resources/scripts/download/memtest86plus

@@ -23,6 +23,23 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+usage()
+{
+	progname="./download memtest86plus"
+	printf "Usage:\n"
+	printf "\t%s         # %s\n" \
+	       "${progname}" \
+	       "Download MemTest86+"
+	printf "\t%s --help  # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -ne 0 ] ; then
+	usage
+	exit 0
+fi
+
 # Get the last version of MemTest86+ used, apply patches, build it.
 
 # Remove the old version that may exist

resources/scripts/download/seabios

@@ -19,6 +19,23 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
+usage()
+{
+	progname="./download seabios"
+	printf "Usage:\n"
+	printf "\t%s         # %s\n" \
+	       "${progname}" \
+	       "Download SeaBIOS"
+	printf "\t%s --help  # %s\n" \
+	       "${progname}" \
+	       "Prints this help"
+}
+
+if [ $# -ne 0 ] ; then
+	usage
+	exit 0
+fi
+
 # Get SeaBIOS, revert to commit last used and apply patches.
 
 # Remove the old version that may still exist