1 /*
2 * Copyright (c) 2014 Google, Inc
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <iotrace.h>
10
do_print_stats(void)11 static void do_print_stats(void)
12 {
13 ulong start, size, offset, count;
14
15 printf("iotrace is %sabled\n", iotrace_get_enabled() ? "en" : "dis");
16 iotrace_get_buffer(&start, &size, &offset, &count);
17 printf("Start: %08lx\n", start);
18 printf("Size: %08lx\n", size);
19 printf("Offset: %08lx\n", offset);
20 printf("Output: %08lx\n", start + offset);
21 printf("Count: %08lx\n", count);
22 printf("CRC32: %08lx\n", (ulong)iotrace_get_checksum());
23 }
24
do_set_buffer(int argc,char * const argv[])25 static int do_set_buffer(int argc, char * const argv[])
26 {
27 ulong addr = 0, size = 0;
28
29 if (argc == 2) {
30 addr = simple_strtoul(*argv++, NULL, 16);
31 size = simple_strtoul(*argv++, NULL, 16);
32 } else if (argc != 0) {
33 return CMD_RET_USAGE;
34 }
35
36 iotrace_set_buffer(addr, size);
37
38 return 0;
39 }
40
do_iotrace(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])41 int do_iotrace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
42 {
43 const char *cmd = argc < 2 ? NULL : argv[1];
44
45 if (!cmd)
46 return cmd_usage(cmdtp);
47 switch (*cmd) {
48 case 'b':
49 return do_set_buffer(argc - 2, argv + 2);
50 case 'p':
51 iotrace_set_enabled(0);
52 break;
53 case 'r':
54 iotrace_set_enabled(1);
55 break;
56 case 's':
57 do_print_stats();
58 break;
59 default:
60 return CMD_RET_USAGE;
61 }
62
63 return 0;
64 }
65
66 U_BOOT_CMD(
67 iotrace, 4, 1, do_iotrace,
68 "iotrace utility commands",
69 "stats - display iotrace stats\n"
70 "iotrace buffer <address> <size> - set iotrace buffer\n"
71 "iotrace pause - pause tracing\n"
72 "iotrace resume - resume tracing"
73 );
74