src/soc/mediatek/common/early_init.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <assert.h>
   4 #include <soc/early_init.h>
   5 #include <string.h>
   6
   7 static struct early_init_data *find_early_init(void)
   8 {
   9         assert(sizeof(struct early_init_data) <= REGION_SIZE(early_init_data));
  10         return (struct early_init_data *)_early_init_data;
  11 }
  12
  13 void early_init_clear(void)
  14 {
  15         struct early_init_data *data = find_early_init();
  16
  17         if (!data)
  18                 return;
  19
  20         memset(data, 0, sizeof(*data));
  21 }
  22
  23 void early_init_save_time(enum early_init_type init_type)
  24 {
  25         struct early_init_data *data = find_early_init();
  26
  27         if (!data)
  28                 return;
  29
  30         timer_monotonic_get(&data->init_time[init_type]);
  31 }
  32
  33 long early_init_get_elapsed_time_us(enum early_init_type init_type)
  34 {
  35         struct early_init_data *data = find_early_init();
  36         struct mono_time cur_time = {0};
  37
  38         if (!data)
  39                 return 0;
  40
  41         /* If early init data was never saved */
  42         if (!memcmp(&data->init_time[init_type], &cur_time, sizeof(cur_time)))
  43                 return 0;
  44
  45         timer_monotonic_get(&cur_time);
  46
  47         return mono_time_diff_microseconds(&data->init_time[init_type],
  48                                            &cur_time);
  49 }