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fw: Add checksum to partition table

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Refuse to boot if blake2s digest over the partition table does not match
digest stored on flash
This commit is contained in:
Mikael Ågren 2025-04-03 15:48:51 +02:00
parent 7d9aa7c647
commit 469546ff33
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GPG key ID: E02DA3D397792C46
11 changed files with 207 additions and 73 deletions
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12
hw/application_fpga/fw/tk1/preload_app.c
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@ -79,10 +79,12 @@ int preload_store(struct partition_table *part_table, uint32_t offset,
return flash_write_data(address, data, size);
}
int preload_store_finalize(struct partition_table *part_table, size_t app_size,
int preload_store_finalize(struct partition_table_storage *part_table_storage, size_t app_size,
uint8_t app_digest[32], uint8_t app_signature[64],
uint8_t to_slot)
{
struct partition_table *part_table = &part_table_storage->table;
if (to_slot >= N_PRELOADED_APP) {
return -4;
}
@ -112,13 +114,15 @@ int preload_store_finalize(struct partition_table *part_table, size_t app_size,
debug_putinthex(app_size);
debug_lf();
part_table_write(part_table);
part_table_write(part_table_storage);
return 0;
}
int preload_delete(struct partition_table *part_table, uint8_t slot)
int preload_delete(struct partition_table_storage *part_table_storage, uint8_t slot)
{
struct partition_table *part_table = &part_table_storage->table;
if (slot >= N_PRELOADED_APP) {
return -4;
}
@ -141,7 +145,7 @@ int preload_delete(struct partition_table *part_table, uint8_t slot)
memset(part_table->pre_app_data[slot].signature, 0,
sizeof(part_table->pre_app_data[slot].signature));
part_table_write(part_table);
part_table_write(part_table_storage);
/* Assumes the area is 64 KiB block aligned */
flash_block_64_erase(slot_to_start_address(slot)); // Erase first 64 KB block