diff options
Diffstat (limited to 'arch/arm/cpu/cpuinfo.c')
| -rw-r--r-- | arch/arm/cpu/cpuinfo.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/arch/arm/cpu/cpuinfo.c b/arch/arm/cpu/cpuinfo.c index aea50e80d1..2d3fe2ac8d 100644 --- a/arch/arm/cpu/cpuinfo.c +++ b/arch/arm/cpu/cpuinfo.c @@ -4,6 +4,7 @@ /* cpuinfo.c - Show information about cp15 registers */ #include <common.h> +#include <getopt.h> #include <command.h> #include <complete.h> #include <asm/system.h> @@ -49,9 +50,23 @@ static int do_cpuinfo(int argc, char *argv[]) { unsigned long mainid, cache, cr; char *architecture, *implementer; - int i; + int opt, i; int cpu_arch; + while ((opt = getopt(argc, argv, "s")) > 0) { + switch (opt) { + case 's': + if (!IS_ENABLED(CONFIG_ARCH_HAS_STACK_DUMP)) + return -ENOSYS; + + printf("SP: 0x%08lx\n", get_sp()); + dump_stack(); + return 0; + default: + return COMMAND_ERROR_USAGE; + } + } + #ifdef CONFIG_CPU_64v8 __asm__ __volatile__( "mrs %0, midr_el1\n" @@ -255,10 +270,16 @@ static int do_cpuinfo(int argc, char *argv[]) return 0; } +BAREBOX_CMD_HELP_START(cpuinfo) +BAREBOX_CMD_HELP_TEXT("Shows misc info about CPU") +BAREBOX_CMD_HELP_OPT ("-s", "print call stack info (if supported)") +BAREBOX_CMD_HELP_END + BAREBOX_CMD_START(cpuinfo) .cmd = do_cpuinfo, BAREBOX_CMD_DESC("show info about CPU") + BAREBOX_CMD_OPTS("[-s]") BAREBOX_CMD_GROUP(CMD_GRP_INFO) BAREBOX_CMD_COMPLETE(empty_complete) + BAREBOX_CMD_HELP(cmd_cpuinfo_help) BAREBOX_CMD_END - |