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1 | /* | |
2 | * Copyright 2008-2009 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #include <common.h> | |
8 | #include <command.h> | |
9 | ||
10 | static int cpu_status_all(void) | |
11 | { | |
12 | unsigned long cpuid; | |
13 | ||
14 | for (cpuid = 0; ; cpuid++) { | |
15 | if (!is_core_valid(cpuid)) { | |
16 | if (cpuid == 0) { | |
17 | printf("Core num: %lu is not valid\n", cpuid); | |
18 | return 1; | |
19 | } | |
20 | break; | |
21 | } | |
22 | cpu_status(cpuid); | |
23 | } | |
24 | ||
25 | return 0; | |
26 | } | |
27 | ||
28 | static int | |
29 | cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
30 | { | |
31 | unsigned long cpuid; | |
32 | ||
33 | if (argc == 2 && strncmp(argv[1], "status", 6) == 0) | |
34 | return cpu_status_all(); | |
35 | ||
36 | if (argc < 3) | |
37 | return CMD_RET_USAGE; | |
38 | ||
39 | cpuid = simple_strtoul(argv[1], NULL, 10); | |
40 | if (!is_core_valid(cpuid)) { | |
41 | printf ("Core num: %lu is not valid\n", cpuid); | |
42 | return 1; | |
43 | } | |
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 | #ifdef CONFIG_SYS_LONGHELP | |
70 | static char cpu_help_text[] = | |
71 | "<num> reset - Reset cpu <num>\n" | |
72 | "cpu status - Status of all cpus\n" | |
73 | "cpu <num> status - Status of cpu <num>\n" | |
74 | "cpu <num> disable - Disable cpu <num>\n" | |
75 | "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]" | |
76 | #ifdef CONFIG_PPC | |
77 | "\n" | |
78 | " [args] : <pir> <r3> <r6>\n" \ | |
79 | " pir - processor id (if writeable)\n" \ | |
80 | " r3 - value for gpr 3\n" \ | |
81 | " r6 - value for gpr 6\n" \ | |
82 | "\n" \ | |
83 | " Use '-' for any arg if you want the default value.\n" \ | |
84 | " Default for r3 is <num> and r6 is 0\n" \ | |
85 | "\n" \ | |
86 | " When cpu <num> is released r4 and r5 = 0.\n" \ | |
87 | " r7 will contain the size of the initial mapped area" | |
88 | #endif | |
89 | ""; | |
90 | #endif | |
91 | ||
92 | U_BOOT_CMD( | |
93 | cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd, | |
94 | "Multiprocessor CPU boot manipulation and release", cpu_help_text | |
95 | ); |