firmware/ice40-riscv: Import common parts to all iCE40/RISC-V firmwares
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/firmware/ice40-riscv/common/utils.h b/firmware/ice40-riscv/common/utils.h
new file mode 100644
index 0000000..fc898f8
--- /dev/null
+++ b/firmware/ice40-riscv/common/utils.h
@@ -0,0 +1,12 @@
+/*
+ * utils.h
+ *
+ * Copyright (C) 2019-2020 Sylvain Munaut <tnt@246tNt.com>
+ * SPDX-License-Identifier: LGPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <stdbool.h>
+
+char *hexstr(void *d, int n, bool space);