LXR uboot/common/cmd

   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
  26int
  27cpu_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
  79U_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);
  91