| Simon Glass | a749ae0 | 2013-06-11 11:14:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2011 The Chromium OS Authors. |
| 3 | * |
| Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-2.0+ |
| Simon Glass | a749ae0 | 2013-06-11 11:14:40 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <command.h> |
| 9 | #include <trace.h> |
| 10 | #include <asm/io.h> |
| 11 | |
| 12 | static int get_args(int argc, char * const argv[], char **buff, |
| 13 | size_t *buff_ptr, size_t *buff_size) |
| 14 | { |
| 15 | if (argc < 2) |
| 16 | return -1; |
| 17 | if (argc < 4) { |
| 18 | *buff_size = getenv_ulong("profsize", 16, 0); |
| 19 | *buff = map_sysmem(getenv_ulong("profbase", 16, 0), |
| 20 | *buff_size); |
| 21 | *buff_ptr = getenv_ulong("profoffset", 16, 0); |
| 22 | } else { |
| 23 | *buff_size = simple_strtoul(argv[3], NULL, 16); |
| 24 | *buff = map_sysmem(simple_strtoul(argv[2], NULL, 16), |
| 25 | *buff_size); |
| 26 | *buff_ptr = 0; |
| 27 | }; |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | static int create_func_list(int argc, char * const argv[]) |
| 32 | { |
| 33 | size_t buff_size, avail, buff_ptr, used; |
| 34 | unsigned int needed; |
| 35 | 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) |
| 44 | printf("Error: truncated (%#x bytes needed)\n", needed); |
| 45 | used = min(avail, needed); |
| 46 | printf("Function trace dumped to %08lx, size %#zx\n", |
| 47 | (ulong)map_to_sysmem(buff + buff_ptr), used); |
| 48 | setenv_hex("profbase", map_to_sysmem(buff)); |
| 49 | setenv_hex("profsize", buff_size); |
| 50 | setenv_hex("profoffset", buff_ptr + used); |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | static int create_call_list(int argc, char * const argv[]) |
| 56 | { |
| 57 | size_t buff_size, avail, buff_ptr, used; |
| 58 | unsigned int needed; |
| 59 | char *buff; |
| 60 | int err; |
| 61 | |
| 62 | if (get_args(argc, argv, &buff, &buff_ptr, &buff_size)) |
| 63 | return -1; |
| 64 | |
| 65 | avail = buff_size - buff_ptr; |
| 66 | err = trace_list_calls(buff + buff_ptr, avail, &needed); |
| 67 | if (err) |
| 68 | printf("Error: truncated (%#x bytes needed)\n", needed); |
| 69 | used = min(avail, needed); |
| 70 | printf("Call list dumped to %08lx, size %#zx\n", |
| 71 | (ulong)map_to_sysmem(buff + buff_ptr), used); |
| 72 | |
| 73 | setenv_hex("profbase", map_to_sysmem(buff)); |
| 74 | setenv_hex("profsize", buff_size); |
| 75 | setenv_hex("profoffset", buff_ptr + used); |
| 76 | |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | int do_trace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 81 | { |
| 82 | const char *cmd = argc < 2 ? NULL : argv[1]; |
| 83 | |
| 84 | if (!cmd) |
| 85 | return cmd_usage(cmdtp); |
| 86 | switch (*cmd) { |
| 87 | case 'p': |
| 88 | trace_set_enabled(0); |
| 89 | break; |
| 90 | case 'c': |
| 91 | if (create_call_list(argc, argv)) |
| 92 | return cmd_usage(cmdtp); |
| 93 | break; |
| 94 | case 'r': |
| 95 | trace_set_enabled(1); |
| 96 | break; |
| 97 | case 'f': |
| 98 | if (create_func_list(argc, argv)) |
| 99 | return cmd_usage(cmdtp); |
| 100 | break; |
| 101 | case 's': |
| 102 | trace_print_stats(); |
| 103 | break; |
| 104 | default: |
| 105 | return CMD_RET_USAGE; |
| 106 | } |
| 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | U_BOOT_CMD( |
| 112 | trace, 4, 1, do_trace, |
| 113 | "trace utility commands", |
| 114 | "stats - display tracing statistics\n" |
| 115 | "trace pause - pause tracing\n" |
| 116 | "trace resume - resume tracing\n" |
| 117 | "trace funclist [<addr> <size>] - dump function list into buffer\n" |
| 118 | "trace calls [<addr> <size>] " |
| 119 | "- dump function call trace into buffer" |
| 120 | ); |