decompressor.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootblock_common.h>
#include <commonlib/bsd/compression.h>
#include <delay.h>
#include <metadata_hash.h>
#include <program_loading.h>
#include <symbols.h>
#include <timestamp.h>
 
extern u8 compressed_bootblock[];
asm (
        ".pushsection .data.compressed_bootblock,\"a\",@progbits\n\t"
        ".type compressed_bootblock, %object\n\t"
        ".balign 8\n"
        "compressed_bootblock:\n\t"
        ".incbin \"" __BUILD_DIR__ "/cbfs/" CONFIG_CBFS_PREFIX "/bootblock.lz4\"\n\t"
        ".size compressed_bootblock, . - compressed_bootblock\n\t"
        ".popsection\n\t"
);
 
struct bootblock_arg arg = {
        .base_timestamp = 0,
        .num_timestamps = 2,
        .timestamps = {
                { .entry_id = TS_ULZ4F_START },
                { .entry_id = TS_ULZ4F_END },
        },
};
 
struct prog prog_bootblock = {
        .type = PROG_BOOTBLOCK,
        .entry = (void *)_bootblock,
        .arg = &arg,
};
 
__weak void decompressor_soc_init(void) { /* no-op */ }
 
void main(void)
{
        init_timer();
 
        if (CONFIG(COLLECT_TIMESTAMPS))
                arg.base_timestamp = timestamp_get();
 
        if (CONFIG(CBFS_VERIFICATION))
                arg.metadata_hash_anchor = metadata_hash_export_anchor();
 
        decompressor_soc_init();
 
        if (CONFIG(COLLECT_TIMESTAMPS))
                arg.timestamps[0].entry_stamp = timestamp_get();
 
        size_t out_size = ulz4f(compressed_bootblock, _bootblock);
        prog_segment_loaded((uintptr_t)_bootblock, out_size, SEG_FINAL);
 
        if (CONFIG(COLLECT_TIMESTAMPS))
                arg.timestamps[1].entry_stamp = timestamp_get();
 
        prog_run(&prog_bootblock);
}