Eric Lee / smarc-uboot

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cmd/mp.c 2.22 KB
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d41ce506b   Eric Lee   Initial Release, ... 
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  /*
   * Copyright 2008-2009 Freescale Semiconductor, Inc.
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <command.h>
  
  static int cpu_status_all(void)
  {
  	unsigned long cpuid;
  
  	for (cpuid = 0; ; cpuid++) {
  		if (!is_core_valid(cpuid)) {
  			if (cpuid == 0) {
  				printf("Core num: %lu is not valid
  ", cpuid);
  				return 1;
  			}
  			break;
  		}
  		cpu_status(cpuid);
  	}
  
  	return 0;
  }
  
  static int
  cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	unsigned long cpuid;
  
  	if (argc == 2 && strncmp(argv[1], "status", 6) == 0)
  		  return cpu_status_all();
  
  	if (argc < 3)
  		return CMD_RET_USAGE;
  
  	cpuid = simple_strtoul(argv[1], NULL, 10);
  	if (!is_core_valid(cpuid)) {
  		printf ("Core num: %lu is not valid
  ",	cpuid);
  		return 1;
  	}
  
  
  	if (argc == 3) {
  		if (strncmp(argv[2], "reset", 5) == 0)
  			cpu_reset(cpuid);
  		else if (strncmp(argv[2], "status", 6) == 0)
  			cpu_status(cpuid);
  		else if (strncmp(argv[2], "disable", 7) == 0)
  			return cpu_disable(cpuid);
  		else
  			return CMD_RET_USAGE;
  
  		return 0;
  	}
  
  	/* 4 or greater, make sure its release */
  	if (strncmp(argv[2], "release", 7) != 0)
  		return CMD_RET_USAGE;
  
  	if (cpu_release(cpuid, argc - 3, argv + 3))
  		return CMD_RET_USAGE;
  
  	return 0;
  }
  
  #ifdef CONFIG_SYS_LONGHELP
  static char cpu_help_text[] =
  	    "<num> reset                 - Reset cpu <num>
  "
  	"cpu status                      - Status of all cpus
  "
  	"cpu <num> status                - Status of cpu <num>
  "
  	"cpu <num> disable               - Disable cpu <num>
  "
  	"cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]"
  #ifdef CONFIG_PPC
  	"
  "
  	"                         [args] : <pir> <r3> <r6>
  " \
  	"                                   pir - processor id (if writeable)
  " \
  	"                                    r3 - value for gpr 3
  " \
  	"                                    r6 - value for gpr 6
  " \
  	"
  " \
  	"     Use '-' for any arg if you want the default value.
  " \
  	"     Default for r3 is <num> and r6 is 0
  " \
  	"
  " \
  	"     When cpu <num> is released r4 and r5 = 0.
  " \
  	"     r7 will contain the size of the initial mapped area"
  #endif
  	"";
  #endif
  
  U_BOOT_CMD(
  	cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd,
  	"Multiprocessor CPU boot manipulation and release", cpu_help_text
  );