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Respect memreserve regions specified in the device tree
[u-boot] / common / cmd_mp.c
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 );