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1 | /* | |
2 | * Copyright 2008-2009 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * See file CREDITS for list of people who contributed to this | |
5 | * project. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License as | |
9 | * published by the Free Software Foundation; either version 2 of | |
10 | * the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
20 | * MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include <common.h> | |
24 | #include <command.h> | |
25 | ||
26 | int | |
27 | cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
28 | { | |
29 | unsigned long cpuid; | |
30 | ||
31 | if (argc < 3) | |
32 | return cmd_usage(cmdtp); | |
33 | ||
34 | cpuid = simple_strtoul(argv[1], NULL, 10); | |
35 | if (cpuid >= cpu_numcores()) { | |
36 | printf ("Core num: %lu is out of range[0..%d]\n", | |
37 | cpuid, cpu_numcores() - 1); | |
38 | return 1; | |
39 | } | |
40 | ||
41 | ||
42 | if (argc == 3) { | |
43 | if (strncmp(argv[2], "reset", 5) == 0) | |
44 | cpu_reset(cpuid); | |
45 | else if (strncmp(argv[2], "status", 6) == 0) | |
46 | cpu_status(cpuid); | |
47 | else if (strncmp(argv[2], "disable", 7) == 0) | |
48 | return cpu_disable(cpuid); | |
49 | else | |
50 | return cmd_usage(cmdtp); | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | /* 4 or greater, make sure its release */ | |
56 | if (strncmp(argv[2], "release", 7) != 0) | |
57 | return cmd_usage(cmdtp); | |
58 | ||
59 | if (cpu_release(cpuid, argc - 3, argv + 3)) | |
60 | return cmd_usage(cmdtp); | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | #ifdef CONFIG_PPC | |
66 | #define CPU_ARCH_HELP \ | |
67 | " [args] : <pir> <r3> <r6>\n" \ | |
68 | " pir - processor id (if writeable)\n" \ | |
69 | " r3 - value for gpr 3\n" \ | |
70 | " r6 - value for gpr 6\n" \ | |
71 | "\n" \ | |
72 | " Use '-' for any arg if you want the default value.\n" \ | |
73 | " Default for r3 is <num> and r6 is 0\n" \ | |
74 | "\n" \ | |
75 | " When cpu <num> is released r4 and r5 = 0.\n" \ | |
76 | " r7 will contain the size of the initial mapped area" | |
77 | #endif | |
78 | ||
79 | U_BOOT_CMD( | |
80 | cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd, | |
81 | "Multiprocessor CPU boot manipulation and release", | |
82 | "<num> reset - Reset cpu <num>\n" | |
83 | "cpu <num> status - Status of cpu <num>\n" | |
84 | "cpu <num> disable - Disable cpu <num>\n" | |
85 | "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]" | |
86 | #ifdef CPU_ARCH_HELP | |
87 | "\n" | |
88 | CPU_ARCH_HELP | |
89 | #endif | |
90 | ); |