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fdt: Report the devicetree source

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It can be confusing to figure out where the devicetree came from. It seems
important enough to warrant a message during boot. Add information about
the number of devices and uclasses too since it is helpful to have some
idea what is going on with driver model.

Report the devicetree source in bdinfo too.

This looks something like this, with > marking the new line.

   U-Boot 2021.10-00190 (Oct 30 2021 - 09:01:29 -0600)

   DRAM:  128 MiB
>  Core:  42 devices, 11 uclasses, devicetree: passage
   Flash: 64 MiB

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-12-16 20:59:34 -07:00 committed by Tom Rini
parent 39605c6ec3
commit ff66e7bb73
3 changed files with 33 additions and 0 deletions
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2
cmd/bdinfo.c
View file

@ -128,6 +128,8 @@ int do_bdinfo(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
lmb_dump_all_force(&lmb);
if (IS_ENABLED(CONFIG_OF_REAL))
printf("devicetree = %s\n", fdtdec_get_srcname());
}
arch_print_bdinfo();

18
common/board_r.c
View file

@ -586,6 +586,23 @@ int initr_mem(void)
}
#endif
static int dm_announce(void)
{
int device_count;
int uclass_count;
if (IS_ENABLED(CONFIG_DM)) {
dm_get_stats(&device_count, &uclass_count);
printf("Core: %d devices, %d uclasses", device_count,
uclass_count);
if (CONFIG_IS_ENABLED(OF_REAL))
printf(", devicetree: %s", fdtdec_get_srcname());
printf("\n");
}
return 0;
}
static int run_main_loop(void)
{
#ifdef CONFIG_SANDBOX
@ -661,6 +678,7 @@ static init_fnc_t init_sequence_r[] = {
stdio_init_tables,
serial_initialize,
initr_announce,
dm_announce,
#if CONFIG_IS_ENABLED(WDT)
initr_watchdog,
#endif

13
lib/fdtdec.c
View file

@ -76,6 +76,19 @@ static const char * const compat_names[COMPAT_COUNT] = {
COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
};
static const char *const fdt_src_name[] = {
[FDTSRC_SEPARATE] = "separate",
[FDTSRC_FIT] = "fit",
[FDTSRC_BOARD] = "board",
[FDTSRC_EMBED] = "embed",
[FDTSRC_ENV] = "env",
};
const char *fdtdec_get_srcname(void)
{
return fdt_src_name[gd->fdt_src];
}
const char *fdtdec_get_compatible(enum fdt_compat_id id)
{
/* We allow reading of the 'unknown' ID for testing purposes */