1 /* 2 * Copyright 2008-2009 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <command.h> 9 10 static int cpu_status_all(void) 11 { 12 unsigned long cpuid; 13 14 for (cpuid = 0; ; cpuid++) { 15 if (!is_core_valid(cpuid)) { 16 if (cpuid == 0) { 17 printf("Core num: %lu is not valid\n", cpuid); 18 return 1; 19 } 20 break; 21 } 22 cpu_status(cpuid); 23 } 24 25 return 0; 26 } 27 28 static int 29 cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 30 { 31 unsigned long cpuid; 32 33 if (argc == 2 && strncmp(argv[1], "status", 6) == 0) 34 return cpu_status_all(); 35 36 if (argc < 3) 37 return CMD_RET_USAGE; 38 39 cpuid = simple_strtoul(argv[1], NULL, 10); 40 if (!is_core_valid(cpuid)) { 41 printf ("Core num: %lu is not valid\n", cpuid); 42 return 1; 43 } 44 45 46 if (argc == 3) { 47 if (strncmp(argv[2], "reset", 5) == 0) 48 cpu_reset(cpuid); 49 else if (strncmp(argv[2], "status", 6) == 0) 50 cpu_status(cpuid); 51 else if (strncmp(argv[2], "disable", 7) == 0) 52 return cpu_disable(cpuid); 53 else 54 return CMD_RET_USAGE; 55 56 return 0; 57 } 58 59 /* 4 or greater, make sure its release */ 60 if (strncmp(argv[2], "release", 7) != 0) 61 return CMD_RET_USAGE; 62 63 if (cpu_release(cpuid, argc - 3, argv + 3)) 64 return CMD_RET_USAGE; 65 66 return 0; 67 } 68 69 #ifdef CONFIG_SYS_LONGHELP 70 static char cpu_help_text[] = 71 "<num> reset - Reset cpu <num>\n" 72 "cpu status - Status of all cpus\n" 73 "cpu <num> status - Status of cpu <num>\n" 74 "cpu <num> disable - Disable cpu <num>\n" 75 "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]" 76 #ifdef CONFIG_PPC 77 "\n" 78 " [args] : <pir> <r3> <r6>\n" \ 79 " pir - processor id (if writeable)\n" \ 80 " r3 - value for gpr 3\n" \ 81 " r6 - value for gpr 6\n" \ 82 "\n" \ 83 " Use '-' for any arg if you want the default value.\n" \ 84 " Default for r3 is <num> and r6 is 0\n" \ 85 "\n" \ 86 " When cpu <num> is released r4 and r5 = 0.\n" \ 87 " r7 will contain the size of the initial mapped area" 88 #endif 89 ""; 90 #endif 91 92 U_BOOT_CMD( 93 cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd, 94 "Multiprocessor CPU boot manipulation and release", cpu_help_text 95 ); 96