src/lib/bootblock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <arch/exception.h>
   4 #include <bootblock_common.h>
   5 #include <console/console.h>
   6 #include <delay.h>
   7 #include <option.h>
   8 #include <post.h>
   9 #include <program_loading.h>
  10 #include <symbols.h>
  11 #include <timestamp.h>
  12
  13 __weak void bootblock_mainboard_early_init(void) { /* no-op */ }
  14 __weak void bootblock_soc_early_init(void) { /* do nothing */ }
  15 __weak void bootblock_soc_init(void) { /* do nothing */ }
  16 __weak void bootblock_mainboard_init(void) { /* do nothing */ }
  17
  18 /*
  19  * This is a the same as the bootblock main(), with the difference that it does
  20  * not collect a timestamp. Instead it accepts the initial timestamp and
  21  * possibly additional timestamp entries as arguments. This can be used in cases
  22  * where earlier stamps are available. Note that this function is designed to be
  23  * entered from C code. This function assumes that the timer has already been
  24  * initialized, so it does not call init_timer().
  25  */
  26 void bootblock_main_with_timestamp(uint64_t base_timestamp,
  27         struct timestamp_entry *timestamps, size_t num_timestamps)
  28 {
  29         /* Initialize timestamps if we have TIMESTAMP region in memlayout.ld. */
  30         if (CONFIG(COLLECT_TIMESTAMPS) &&
  31             REGION_SIZE(timestamp) > 0) {
  32                 int i;
  33                 timestamp_init(base_timestamp);
  34                 for (i = 0; i < num_timestamps; i++)
  35                         timestamp_add(timestamps[i].entry_id,
  36                                       timestamps[i].entry_stamp);
  37         }
  38
  39         timestamp_add_now(TS_START_BOOTBLOCK);
  40
  41         bootblock_soc_early_init();
  42         bootblock_mainboard_early_init();
  43
  44         if (CONFIG(USE_OPTION_TABLE))
  45                 sanitize_cmos();
  46
  47         if (CONFIG(CMOS_POST))
  48                 cmos_post_init();
  49
  50         if (CONFIG(BOOTBLOCK_CONSOLE)) {
  51                 console_init();
  52                 exception_init();
  53         }
  54
  55         bootblock_soc_init();
  56         bootblock_mainboard_init();
  57
  58         timestamp_add_now(TS_END_BOOTBLOCK);
  59
  60         run_romstage();
  61 }
  62
  63 void bootblock_main_with_basetime(uint64_t base_timestamp)
  64 {
  65         bootblock_main_with_timestamp(base_timestamp, NULL, 0);
  66 }
  67
  68 void main(void)
  69 {
  70         uint64_t base_timestamp = 0;
  71
  72         init_timer();
  73
  74         if (CONFIG(COLLECT_TIMESTAMPS))
  75                 base_timestamp = timestamp_get();
  76
  77         bootblock_main_with_timestamp(base_timestamp, NULL, 0);
  78 }
  79
  80 #if CONFIG(COMPRESS_BOOTBLOCK)
  81 /*
  82  * This is the bootblock entry point when it is run after a decompressor stage.
  83  * For non-decompressor builds, _start is generally defined in architecture-
  84  * specific assembly code. In decompressor builds that architecture
  85  * initialization code already ran in the decompressor, so the bootblock can
  86  * start straight into common code with a C environment.
  87  */
  88 void _start(struct bootblock_arg *arg);
  89 void _start(struct bootblock_arg *arg)
  90 {
  91         bootblock_main_with_timestamp(arg->base_timestamp, arg->timestamps,
  92                                       arg->num_timestamps);
  93 }
  94
  95 #endif