1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2008-2009 Freescale Semiconductor, Inc.
4 */
5
6 #include <command.h>
7 #include <cpu_func.h>
8 #include <vsprintf.h>
9 #include <linux/string.h>
10
cpu_status_all(void)11 static int cpu_status_all(void)
12 {
13 unsigned long cpuid;
14
15 for (cpuid = 0; ; cpuid++) {
16 if (!is_core_valid(cpuid)) {
17 if (cpuid == 0) {
18 printf("Core num: %lu is not valid\n", cpuid);
19 return 1;
20 }
21 break;
22 }
23 cpu_status(cpuid);
24 }
25
26 return 0;
27 }
28
29 static int
cpu_cmd(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])30 cpu_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
31 {
32 unsigned long cpuid;
33
34 if (argc == 2 && strncmp(argv[1], "status", 6) == 0)
35 return cpu_status_all();
36
37 if (argc < 3)
38 return CMD_RET_USAGE;
39
40 cpuid = dectoul(argv[1], NULL);
41 if (!is_core_valid(cpuid)) {
42 printf ("Core num: %lu is not valid\n", cpuid);
43 return 1;
44 }
45
46 if (argc == 3) {
47 if (strncmp(argv[2], "reset", 5) == 0)
48 cpu_reset(cpuid);
49 else if (strncmp(argv[2], "status", 6) == 0)
50 cpu_status(cpuid);
51 else if (strncmp(argv[2], "disable", 7) == 0)
52 return cpu_disable(cpuid);
53 else
54 return CMD_RET_USAGE;
55
56 return 0;
57 }
58
59 /* 4 or greater, make sure its release */
60 if (strncmp(argv[2], "release", 7) != 0)
61 return CMD_RET_USAGE;
62
63 if (cpu_release(cpuid, argc - 3, argv + 3))
64 return CMD_RET_USAGE;
65
66 return 0;
67 }
68
69 U_BOOT_LONGHELP(cpu,
70 "<num> reset - Reset cpu <num>\n"
71 "cpu status - Status of all cpus\n"
72 "cpu <num> status - Status of cpu <num>\n"
73 "cpu <num> disable - Disable cpu <num>\n"
74 "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]"
75 #ifdef CONFIG_PPC
76 "\n"
77 " [args] : <pir> <r3> <r6>\n" \
78 " pir - processor id (if writeable)\n" \
79 " r3 - value for gpr 3\n" \
80 " r6 - value for gpr 6\n" \
81 "\n" \
82 " Use '-' for any arg if you want the default value.\n" \
83 " Default for r3 is <num> and r6 is 0\n" \
84 "\n" \
85 " When cpu <num> is released r4 and r5 = 0.\n" \
86 " r7 will contain the size of the initial mapped area"
87 #endif
88 );
89
90 U_BOOT_CMD(
91 cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd,
92 "Multiprocessor CPU boot manipulation and release", cpu_help_text
93 );
94