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- /*
- * 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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