Add basic help output

1 files changed, 16 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index cf5d8b7..45244fc 100644
--- a/Makefile
+++ b/Makefile
@@ -33,4 +33,19 @@ include src/arch/${arch}/Makefile.inc
 clean: arch_clean
 	rm -f build/system.elf
 
-.PHONY: clean
+help: arch_help
+	@echo
+	@echo "Global flags:"
+	@echo "    timer_cycles timer_us timer_s"
+	@echo "    loop"
+	@echo
+	@echo "${arch} drivers:"
+	@echo "    $(shell ls src/arch/${arch}/driver | fgrep .c | cut -d . -f 1)"
+	@echo
+	@echo "Global drivers:"
+	@echo "    $(shell ls src/driver | fgrep .c | cut -d . -f 1)"
+	@echo
+	@echo "Global architectures:"
+	@echo "    $(shell ls src/arch)"
+
+.PHONY: clean help