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LoongArch64: Add 'mach' command support

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The 'mach' command can only get some basic machine state information, such
as machine type, processor speed, etc.

E.g. With this patch:
crash> mach
       MACHINE TYPE: loongarch64
        MEMORY SIZE: 64 GB
               CPUS: 16
    PROCESSOR SPEED: 2200 Mhz
                 HZ: 250
          PAGE SIZE: 16384
  KERNEL STACK SIZE: 16384

Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Ming Wang <wangming01@loongson.cn>
This commit is contained in:
Ming Wang 2023-12-28 19:46:28 +08:00 committed by Kazuhito Hagio
parent 7b8db35751
commit 7561580451
1 changed files with 59 additions and 0 deletions
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59
loongarch64.c
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@ -49,6 +49,8 @@ static int loongarch64_kvtop(struct task_context *tc, ulong kvaddr,
static int loongarch64_translate_pte(ulong pte, void *physaddr,
ulonglong pte64);
static void loongarch64_cmd_mach(void);
static void loongarch64_display_machine_stats(void);
/*
* 3 Levels paging PAGE_SIZE=16KB
* PGD | PMD | PTE | OFFSET |
@ -334,6 +336,59 @@ loongarch64_kvtop(struct task_context *tc, ulong kvaddr, physaddr_t *paddr, int
verbose);
}
/*
* Machine dependent command.
*/
static void
loongarch64_cmd_mach(void)
{
int c;
while ((c = getopt(argcnt, args, "cmo")) != EOF) {
switch (c) {
case 'c':
case 'm':
case 'o':
option_not_supported(c);
break;
default:
argerrs++;
break;
}
}
if (argerrs)
cmd_usage(pc->curcmd, SYNOPSIS);
loongarch64_display_machine_stats();
}
/*
* "mach" command output.
*/
static void
loongarch64_display_machine_stats(void)
{
struct new_utsname *uts;
char buf[BUFSIZE];
ulong mhz;
uts = &kt->utsname;
fprintf(fp, " MACHINE TYPE: %s\n", uts->machine);
fprintf(fp, " MEMORY SIZE: %s\n", get_memory_size(buf));
fprintf(fp, " CPUS: %d\n", get_cpus_to_display());
fprintf(fp, " PROCESSOR SPEED: ");
if ((mhz = machdep->processor_speed()))
fprintf(fp, "%ld Mhz\n", mhz);
else
fprintf(fp, "(unknown)\n");
fprintf(fp, " HZ: %d\n", machdep->hz);
fprintf(fp, " PAGE SIZE: %d\n", PAGESIZE());
fprintf(fp, " KERNEL STACK SIZE: %ld\n", STACKSIZE());
}
/*
* Accept or reject a symbol from the kernel namelist.
*/
@ -464,6 +519,7 @@ loongarch64_init(int when)
machdep->is_uvaddr = generic_is_uvaddr;
machdep->uvtop = loongarch64_uvtop;
machdep->kvtop = loongarch64_kvtop;
machdep->cmd_mach = loongarch64_cmd_mach;
machdep->vmalloc_start = loongarch64_vmalloc_start;
machdep->processor_speed = loongarch64_processor_speed;
machdep->get_stackbase = generic_get_stackbase;
@ -480,6 +536,9 @@ loongarch64_init(int when)
case POST_GDB:
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
if (!machdep->hz)
machdep->hz = 250;
break;
case POST_VM:
break;