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-rw-r--r--cmd/mp.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/cmd/mp.c b/cmd/mp.c
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index 00000000000..a80c6421575
--- /dev/null
+++ b/cmd/mp.c
@@ -0,0 +1,95 @@
+/*
+ * 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\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;
+
+ cpuid = simple_strtoul(argv[1], NULL, 10);
+ if (!is_core_valid(cpuid)) {
+ printf ("Core num: %lu is not valid\n", 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>\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]"
+#ifdef CONFIG_PPC
+ "\n"
+ " [args] : <pir> <r3> <r6>\n" \
+ " pir - processor id (if writeable)\n" \
+ " r3 - value for gpr 3\n" \
+ " r6 - value for gpr 6\n" \
+ "\n" \
+ " Use '-' for any arg if you want the default value.\n" \
+ " Default for r3 is <num> and r6 is 0\n" \
+ "\n" \
+ " When cpu <num> is released r4 and r5 = 0.\n" \
+ " 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
+);