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-rw-r--r--cmd/iotrace.c73
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"
+);
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