1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2008-2009 Freescale Semiconductor, Inc.
4 */
5
6 #include <common.h>
7 #include <command.h>
8
cpu_status_all(void)9 static int cpu_status_all(void)
10 {
11 unsigned long cpuid;
12
13 for (cpuid = 0; ; cpuid++) {
14 if (!is_core_valid(cpuid)) {
15 if (cpuid == 0) {
16 printf("Core num: %lu is not valid\n", cpuid);
17 return 1;
18 }
19 break;
20 }
21 cpu_status(cpuid);
22 }
23
24 return 0;
25 }
26
27 static int
cpu_cmd(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])28 cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
29 {
30 unsigned long cpuid;
31
32 if (argc == 2 && strncmp(argv[1], "status", 6) == 0)
33 return cpu_status_all();
34
35 if (argc < 3)
36 return CMD_RET_USAGE;
37
38 cpuid = simple_strtoul(argv[1], NULL, 10);
39 if (!is_core_valid(cpuid)) {
40 printf ("Core num: %lu is not valid\n", cpuid);
41 return 1;
42 }
43
44
45 if (argc == 3) {
46 if (strncmp(argv[2], "reset", 5) == 0)
47 cpu_reset(cpuid);
48 else if (strncmp(argv[2], "status", 6) == 0)
49 cpu_status(cpuid);
50 else if (strncmp(argv[2], "disable", 7) == 0)
51 return cpu_disable(cpuid);
52 else
53 return CMD_RET_USAGE;
54
55 return 0;
56 }
57
58 /* 4 or greater, make sure its release */
59 if (strncmp(argv[2], "release", 7) != 0)
60 return CMD_RET_USAGE;
61
62 if (cpu_release(cpuid, argc - 3, argv + 3))
63 return CMD_RET_USAGE;
64
65 return 0;
66 }
67
68 #ifdef CONFIG_SYS_LONGHELP
69 static char cpu_help_text[] =
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 #endif
90
91 U_BOOT_CMD(
92 cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd,
93 "Multiprocessor CPU boot manipulation and release", cpu_help_text
94 );
95