cmd_mp: Add support for showing all CPU status by one command

Use one command for showing overall CPU status than several without
knowing how many cpus is available in the system.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

common/cmd_mp.c

@@ -7,11 +7,32 @@
 #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\n", 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;
 
@@ -48,6 +69,7 @@ cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #ifdef CONFIG_SYS_LONGHELP
 static char cpu_help_text[] =
 	    "<num> reset                 - Reset cpu <num>\n"
+	"cpu status                      - Status of all cpus\n"
 	"cpu <num> status                - Status of cpu <num>\n"
 	"cpu <num> disable               - Disable cpu <num>\n"
 	"cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]"