release/src-rt-6.x.4708/cfe/cfe/arch/mips/cpu/sb1250/src/ui_reset.c

   1 /*  *********************************************************************
   2     *  Broadcom Common Firmware Environment (CFE)
   3     *
   4     *  RESET command                            File: ui_reset.c
   5     *
   6     *  Commands to reset the CPU
   7     *
   8     *  Author:  Mitch Lichtenberg (mpl@broadcom.com)
   9     *
  10     *********************************************************************
  11     *
  12     *  Copyright 2000,2001,2002,2003
  13     *  Broadcom Corporation. All rights reserved.
  14     *
  15     *  This software is furnished under license and may be used and
  16     *  copied only in accordance with the following terms and
  17     *  conditions.  Subject to these conditions, you may download,
  18     *  copy, install, use, modify and distribute modified or unmodified
  19     *  copies of this software in source and/or binary form.  No title
  20     *  or ownership is transferred hereby.
  21     *
  22     *  1) Any source code used, modified or distributed must reproduce
  23     *     and retain this copyright notice and list of conditions
  24     *     as they appear in the source file.
  25     *
  26     *  2) No right is granted to use any trade name, trademark, or
  27     *     logo of Broadcom Corporation.  The "Broadcom Corporation"
  28     *     name may not be used to endorse or promote products derived
  29     *     from this software without the prior written permission of
  30     *     Broadcom Corporation.
  31     *
  32     *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
  33     *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
  34     *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  35     *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
  36     *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
  37     *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
  38     *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  39     *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  40     *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  41     *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  42     *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  43     *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
  44     *     THE POSSIBILITY OF SUCH DAMAGE.
  45     ********************************************************************* */
  46
  47
  48 #include "lib_types.h"
  49 #include "lib_string.h"
  50 #include "lib_queue.h"
  51 #include "lib_malloc.h"
  52 #include "lib_printf.h"
  53
  54 #include "cfe_timer.h"
  55
  56 #include "cfe_error.h"
  57 #include "cfe_console.h"
  58
  59 #include "ui_command.h"
  60 #include "cfe.h"
  61
  62 #include "bsp_config.h"
  63
  64 #include "sbmips.h"
  65 #include "sb1250_regs.h"
  66 #include "sb1250_scd.h"
  67
  68 /*  *********************************************************************
  69     *  Configuration
  70     ********************************************************************* */
  71
  72 /*  *********************************************************************
  73     *  prototypes
  74     ********************************************************************* */
  75
  76 int ui_init_resetcmds(void);
  77 static int ui_cmd_reset(ui_cmdline_t *cmd,int argc,char *argv[]);
  78
  79
  80 /*  *********************************************************************
  81     *  Data
  82     ********************************************************************* */
  83
  84
  85 /*  *********************************************************************
  86     *  ui_init_resetcmds()
  87     *
  88     *  Add RESET-specific commands to the command table
  89     *
  90     *  Input parameters:
  91     *      nothing
  92     *
  93     *  Return value:
  94     *      0
  95     ********************************************************************* */
  96
  97
  98 int ui_init_resetcmds(void)
  99 {
 100     cmd_addcmd("reset",
 101                ui_cmd_reset,
 102                NULL,
 103                "Reset the system.",
 104                "reset [-yes] -softreset|-cpu|-unicpu1|-unicpu0|-sysreset",
 105                "-yes;Don't ask for confirmation|"
 106                "-softreset;Soft reset of the entire chip|"
 107                "-cpu;Reset the CPUs|"
 108                "-unicpu1;Reset to uniprocessor using CPU1|"
 109                "-unicpu0;Reset to uniprocessor using CPU0|"
 110                "-sysreset;Full system reset");
 111
 112
 113
 114     return 0;
 115 }
 116
 117
 118
 119
 120
 121 /*  *********************************************************************
 122     *  ui_cmd_reset(cmd,argc,argv)
 123     *
 124     *  RESET command.
 125     *
 126     *  Input parameters:
 127     *      cmd - command structure
 128     *      argc,argv - parameters
 129     *
 130     *  Return value:
 131     *      -1 if error occured.  Does not return otherwise
 132     ********************************************************************* */
 133
 134 static int ui_cmd_reset(ui_cmdline_t *cmd,int argc,char *argv[])
 135 {
 136     uint64_t data;
 137     uint64_t olddata;
 138     int confirm = 1;
 139     char str[50];
 140
 141     data = SBREADCSR(A_SCD_SYSTEM_CFG) & ~M_SYS_SB_SOFTRES;
 142     olddata = data;
 143
 144     if (cmd_sw_isset(cmd,"-yes")) confirm = 0;
 145
 146     if (cmd_sw_isset(cmd,"-softreset")) data |= M_SYS_SB_SOFTRES;
 147
 148     if (cmd_sw_isset(cmd,"-unicpu0")) data |= M_SYS_UNICPU0;
 149     else if (cmd_sw_isset(cmd,"-unicpu1")) data |= M_SYS_UNICPU1;
 150
 151     if (cmd_sw_isset(cmd,"-sysreset")) data |= M_SYS_SYSTEM_RESET;
 152
 153     if (cmd_sw_isset(cmd,"-cpu")) data |= (M_SYS_CPU_RESET_0 | M_SYS_CPU_RESET_1);
 154
 155     if (data == olddata) {              /* no changes to reset pins were specified */
 156         return ui_showusage(cmd);
 157         }
 158
 159     if (confirm) {
 160         console_readline("Are you sure you want to reset? ",str,sizeof(str));
 161         if ((str[0] != 'Y') && (str[0] != 'y')) return -1;
 162         }
 163
 164     SBWRITECSR(A_SCD_SYSTEM_CFG,data);
 165
 166     /* should not return */
 167
 168     return -1;
 169 }