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