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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glasscabcbb52013-06-11 11:14:40 -07002/*
3 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glasscabcbb52013-06-11 11:14:40 -07004 */
5
6#include <common.h>
7#include <command.h>
Simon Glassc7694dd2019-08-01 09:46:46 -06008#include <env.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -05009#include <mapmem.h>
Simon Glasscabcbb52013-06-11 11:14:40 -070010#include <trace.h>
11#include <asm/io.h>
12
Simon Glass09140112020-05-10 11:40:03 -060013static int get_args(int argc, char *const argv[], char **buff,
Simon Glasscabcbb52013-06-11 11:14:40 -070014 size_t *buff_ptr, size_t *buff_size)
15{
16 if (argc < 2)
17 return -1;
18 if (argc < 4) {
Simon Glassbfebc8c2017-08-03 12:22:13 -060019 *buff_size = env_get_ulong("profsize", 16, 0);
20 *buff = map_sysmem(env_get_ulong("profbase", 16, 0),
Simon Glasscabcbb52013-06-11 11:14:40 -070021 *buff_size);
Simon Glassbfebc8c2017-08-03 12:22:13 -060022 *buff_ptr = env_get_ulong("profoffset", 16, 0);
Simon Glasscabcbb52013-06-11 11:14:40 -070023 } else {
24 *buff_size = simple_strtoul(argv[3], NULL, 16);
25 *buff = map_sysmem(simple_strtoul(argv[2], NULL, 16),
26 *buff_size);
27 *buff_ptr = 0;
28 };
29 return 0;
30}
31
Simon Glass09140112020-05-10 11:40:03 -060032static int create_func_list(int argc, char *const argv[])
Simon Glasscabcbb52013-06-11 11:14:40 -070033{
Heinrich Schuchardt2b7a3882019-06-14 21:50:55 +020034 size_t buff_size, avail, buff_ptr, needed, used;
Simon Glasscabcbb52013-06-11 11:14:40 -070035 char *buff;
36 int err;
37
38 if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
39 return -1;
40
41 avail = buff_size - buff_ptr;
42 err = trace_list_functions(buff + buff_ptr, avail, &needed);
43 if (err)
Heinrich Schuchardt2b7a3882019-06-14 21:50:55 +020044 printf("Error: truncated (%#zx bytes needed)\n", needed);
Simon Glass5eca9772016-02-24 09:14:45 -070045 used = min(avail, (size_t)needed);
Simon Glasscabcbb52013-06-11 11:14:40 -070046 printf("Function trace dumped to %08lx, size %#zx\n",
47 (ulong)map_to_sysmem(buff + buff_ptr), used);
Simon Glass018f5302017-08-03 12:22:10 -060048 env_set_hex("profbase", map_to_sysmem(buff));
49 env_set_hex("profsize", buff_size);
50 env_set_hex("profoffset", buff_ptr + used);
Simon Glasscabcbb52013-06-11 11:14:40 -070051
52 return 0;
53}
54
Simon Glass09140112020-05-10 11:40:03 -060055static int create_call_list(int argc, char *const argv[])
Simon Glasscabcbb52013-06-11 11:14:40 -070056{
Heinrich Schuchardt2b7a3882019-06-14 21:50:55 +020057 size_t buff_size, avail, buff_ptr, needed, used;
Simon Glasscabcbb52013-06-11 11:14:40 -070058 char *buff;
59 int err;
60
61 if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
62 return -1;
63
64 avail = buff_size - buff_ptr;
65 err = trace_list_calls(buff + buff_ptr, avail, &needed);
66 if (err)
Heinrich Schuchardt2b7a3882019-06-14 21:50:55 +020067 printf("Error: truncated (%#zx bytes needed)\n", needed);
Simon Glass5eca9772016-02-24 09:14:45 -070068 used = min(avail, (size_t)needed);
Simon Glasscabcbb52013-06-11 11:14:40 -070069 printf("Call list dumped to %08lx, size %#zx\n",
70 (ulong)map_to_sysmem(buff + buff_ptr), used);
71
Simon Glass018f5302017-08-03 12:22:10 -060072 env_set_hex("profbase", map_to_sysmem(buff));
73 env_set_hex("profsize", buff_size);
74 env_set_hex("profoffset", buff_ptr + used);
Simon Glasscabcbb52013-06-11 11:14:40 -070075
76 return 0;
77}
78
Simon Glass09140112020-05-10 11:40:03 -060079int do_trace(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Simon Glasscabcbb52013-06-11 11:14:40 -070080{
81 const char *cmd = argc < 2 ? NULL : argv[1];
82
83 if (!cmd)
84 return cmd_usage(cmdtp);
85 switch (*cmd) {
86 case 'p':
87 trace_set_enabled(0);
88 break;
89 case 'c':
90 if (create_call_list(argc, argv))
91 return cmd_usage(cmdtp);
92 break;
93 case 'r':
94 trace_set_enabled(1);
95 break;
96 case 'f':
97 if (create_func_list(argc, argv))
98 return cmd_usage(cmdtp);
99 break;
100 case 's':
101 trace_print_stats();
102 break;
103 default:
104 return CMD_RET_USAGE;
105 }
106
107 return 0;
108}
109
110U_BOOT_CMD(
111 trace, 4, 1, do_trace,
112 "trace utility commands",
113 "stats - display tracing statistics\n"
114 "trace pause - pause tracing\n"
115 "trace resume - resume tracing\n"
116 "trace funclist [<addr> <size>] - dump function list into buffer\n"
117 "trace calls [<addr> <size>] "
118 "- dump function call trace into buffer"
119);