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fw: Implement redundancy of partition table

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Michael Cardell Widerkrantz 2025-04-04 14:32:15 +02:00 • committed by Mikael Ågren
parent 03625b312d
commit 1636b40c71
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GPG key ID: E02DA3D397792C46
2 changed files with 28 additions and 14 deletions
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36
hw/application_fpga/fw/tk1/partition_table.c
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@ -26,30 +26,42 @@ void part_digest(struct partition_table *part_table, uint8_t *out_digest, size_t
int part_table_read(struct partition_table_storage *storage)
{
uint32_t offset[2] = {
ADDR_PARTITION_TABLE_0,
ADDR_PARTITION_TABLE_1,
};
uint8_t check_digest[PART_DIGEST_SIZE];
flash_release_powerdown();
memset(storage, 0x00, sizeof(*storage));
flash_read_data(ADDR_PARTITION_TABLE, (uint8_t *)storage,
for (int i = 0; i < 2; i ++) {
flash_read_data(offset[i], (uint8_t *)storage,
sizeof(*storage));
part_digest(&storage->table, check_digest, sizeof(check_digest));
// TODO: Implement redundancy
uint8_t check_digest[PART_DIGEST_SIZE];
part_digest(&storage->table, check_digest, sizeof(check_digest));
if (!memeq(check_digest, storage->check_digest, sizeof(check_digest))) {
return -1;
if (memeq(check_digest, storage->check_digest, sizeof(check_digest))) {
return 0;
}
}
return 0;
return -1;
}
int part_table_write(struct partition_table_storage *storage)
{
uint32_t offset[2] = {
ADDR_PARTITION_TABLE_0,
ADDR_PARTITION_TABLE_1,
};
part_digest(&storage->table, storage->check_digest, sizeof(storage->check_digest));
flash_sector_erase(ADDR_PARTITION_TABLE);
flash_write_data(ADDR_PARTITION_TABLE, (uint8_t *)storage,
sizeof(*storage));
for (int i = 0; i < 2; i ++) {
flash_sector_erase(offset[i]);
flash_write_data(offset[i], (uint8_t *)storage,
sizeof(*storage));
}
return 0;
}