src/lib/decompressor.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootblock_common.h>
   4 #include <commonlib/bsd/compression.h>
   5 #include <delay.h>
   6 #include <metadata_hash.h>
   7 #include <program_loading.h>
   8 #include <symbols.h>
   9 #include <timestamp.h>
  10
  11 extern u8 compressed_bootblock[];
  12 asm (
  13         ".pushsection .data.compressed_bootblock,\"a\",@progbits\n\t"
  14         ".type compressed_bootblock, %object\n\t"
  15         ".balign 8\n"
  16         "compressed_bootblock:\n\t"
  17         ".incbin \"" __BUILD_DIR__ "/cbfs/" CONFIG_CBFS_PREFIX "/bootblock.lz4\"\n\t"
  18         ".size compressed_bootblock, . - compressed_bootblock\n\t"
  19         ".popsection\n\t"
  20 );
  21
  22 struct bootblock_arg arg = {
  23         .base_timestamp = 0,
  24         .num_timestamps = 2,
  25         .timestamps = {
  26                 { .entry_id = TS_ULZ4F_START },
  27                 { .entry_id = TS_ULZ4F_END },
  28         },
  29 };
  30
  31 struct prog prog_bootblock = {
  32         .type = PROG_BOOTBLOCK,
  33         .entry = (void *)_bootblock,
  34         .arg = &arg,
  35 };
  36
  37 __weak void decompressor_soc_init(void) { /* no-op */ }
  38
  39 void main(void)
  40 {
  41         init_timer();
  42
  43         if (CONFIG(COLLECT_TIMESTAMPS))
  44                 arg.base_timestamp = timestamp_get();
  45
  46         if (CONFIG(CBFS_VERIFICATION))
  47                 arg.metadata_hash_anchor = metadata_hash_export_anchor();
  48
  49         decompressor_soc_init();
  50
  51         if (CONFIG(COLLECT_TIMESTAMPS))
  52                 arg.timestamps[0].entry_stamp = timestamp_get();
  53
  54         size_t out_size = ulz4f(compressed_bootblock, _bootblock);
  55         prog_segment_loaded((uintptr_t)_bootblock, out_size, SEG_FINAL);
  56
  57         if (CONFIG(COLLECT_TIMESTAMPS))
  58                 arg.timestamps[1].entry_stamp = timestamp_get();
  59
  60         prog_run(&prog_bootblock);
  61 }