1 files changed, 73 insertions, 0 deletions
diff --git a/cmd/iotrace.c b/cmd/iotrace.c
new file mode 100644
index 0000000000..f54276d2f5
--- /dev/null
+++ b/cmd/iotrace.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <iotrace.h>
+
+static void do_print_stats(void)
+{
+	ulong start, size, offset, count;
+
+	printf("iotrace is %sabled\n", iotrace_get_enabled() ? "en" : "dis");
+	iotrace_get_buffer(&start, &size, &offset, &count);
+	printf("Start:  %08lx\n", start);
+	printf("Size:   %08lx\n", size);
+	printf("Offset: %08lx\n", offset);
+	printf("Output: %08lx\n", start + offset);
+	printf("Count:  %08lx\n", count);
+	printf("CRC32:  %08lx\n", (ulong)iotrace_get_checksum());
+}
+
+static int do_set_buffer(int argc, char * const argv[])
+{
+	ulong addr = 0, size = 0;
+
+	if (argc == 2) {
+		addr = simple_strtoul(*argv++, NULL, 16);
+		size = simple_strtoul(*argv++, NULL, 16);
+	} else if (argc != 0) {
+		return CMD_RET_USAGE;
+	}
+
+	iotrace_set_buffer(addr, size);
+
+	return 0;
+}
+
+int do_iotrace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	const char *cmd = argc < 2 ? NULL : argv[1];
+
+	if (!cmd)
+		return cmd_usage(cmdtp);
+	switch (*cmd) {
+	case 'b':
+		return do_set_buffer(argc - 2, argv + 2);
+	case 'p':
+		iotrace_set_enabled(0);
+		break;
+	case 'r':
+		iotrace_set_enabled(1);
+		break;
+	case 's':
+		do_print_stats();
+		break;
+	default:
+		return CMD_RET_USAGE;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	iotrace,	4,	1,	do_iotrace,
+	"iotrace utility commands",
+	"stats                        - display iotrace stats\n"
+	"iotrace buffer <address> <size>      - set iotrace buffer\n"
+	"iotrace pause                        - pause tracing\n"
+	"iotrace resume                       - resume tracing"
+);