diff --git a/src/bsp/lk/lib/cksum/debug.c b/src/bsp/lk/lib/cksum/debug.c
new file mode 100644
index 0000000..132cc00
--- /dev/null
+++ b/src/bsp/lk/lib/cksum/debug.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#if WITH_LIB_CONSOLE
+
+#include <ctype.h>
+#include <debug.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <kernel/thread.h>
+#include <platform.h>
+#include <lib/cksum.h>
+
+#include <lib/console.h>
+
+static int cmd_crc16(int argc, const cmd_args *argv);
+static int cmd_crc32(int argc, const cmd_args *argv);
+static int cmd_adler32(int argc, const cmd_args *argv);
+static int cmd_cksum_bench(int argc, const cmd_args *argv);
+
+STATIC_COMMAND_START
+#if LK_DEBUGLEVEL > 0
+	STATIC_COMMAND("crc16", "crc16", &cmd_crc16)
+	STATIC_COMMAND("crc32", "crc32", &cmd_crc32)
+	STATIC_COMMAND("adler32", "adler32", &cmd_adler32)
+#endif
+#if LK_DEBUGLEVEL > 1
+	STATIC_COMMAND("bench_cksum", "benchmark the checksum routines", &cmd_cksum_bench)
+#endif
+STATIC_COMMAND_END(crc);
+
+static int cmd_crc16(int argc, const cmd_args *argv)
+{
+	if (argc < 3) {
+		printf("not enough arguments\n");
+		printf("usage: %s <address> <size>\n", argv[0].str);
+		return -1;
+	}
+
+	uint16_t crc = crc16(argv[1].p, argv[2].u);
+
+	printf("0x%hx\n", crc);
+
+	return 0;
+}
+
+static int cmd_crc32(int argc, const cmd_args *argv)
+{
+	if (argc < 3) {
+		printf("not enough arguments\n");
+		printf("usage: %s <address> <size>\n", argv[0].str);
+		return -1;
+	}
+
+	uint32_t crc = crc32(0, argv[1].p, argv[2].u);
+
+	printf("0x%x\n", crc);
+
+	return 0;
+}
+
+static int cmd_adler32(int argc, const cmd_args *argv)
+{
+	if (argc < 3) {
+		printf("not enough arguments\n");
+		printf("usage: %s <address> <size>\n", argv[0].str);
+		return -1;
+	}
+
+	uint32_t crc = adler32(0, argv[1].p, argv[2].u);
+
+	printf("0x%x\n", crc);
+
+	return 0;
+}
+
+static int cmd_cksum_bench(int argc, const cmd_args *argv)
+{
+#define BUFSIZE 0x1000
+#define ITER 16384
+	void *buf;
+	bool freebuf;
+
+	if (argc > 1) {
+		buf = argv[1].p;
+		freebuf = false;
+	} else {
+		buf = malloc(BUFSIZE);
+		freebuf = true;
+	}
+
+	if (!buf)
+		return -1;
+
+	lk_bigtime_t t;
+	uint32_t crc;
+
+	printf("buffer at %p, size %u\n", buf, BUFSIZE);
+
+	t = current_time_hires();
+	crc = 0;
+	for (int i = 0; i < ITER; i++) {
+		crc = crc32(crc, buf, BUFSIZE);
+	}
+	t = current_time_hires() - t;
+
+	printf("took %llu usecs to crc32 %d bytes (%lld bytes/sec)\n", t, BUFSIZE * ITER, (BUFSIZE * ITER) * 1000000ULL / t);
+	thread_sleep(500);
+
+	t = current_time_hires();
+	crc = 0;
+	for (int i = 0; i < ITER; i++) {
+		crc = adler32(crc, buf, BUFSIZE);
+	}
+	t = current_time_hires() - t;
+
+	printf("took %llu usecs to adler32 %d bytes (%lld bytes/sec)\n", t, BUFSIZE * ITER, (BUFSIZE * ITER) * 1000000ULL / t);
+
+	if (freebuf)
+		free(buf);
+	return 0;
+}
+
+#endif // WITH_LIB_CONSOLE
+
+// vim: set noexpandtab: