/**
* ubi_io_write_ec_hdr - write an erase counter header.
* @ubi: UBI device description object
* @pnum: physical eraseblock to write to
* @ec_hdr: the erase counter header to write
*
* This function writes erase counter header described by @ec_hdr to physical
* eraseblock @pnum. It also fills most fields of @ec_hdr before writing, so
* the caller do not have to fill them. Callers must only fill the @ec_hdr->ec
* field.
*
* This function returns zero in case of success and a negative error code in
* case of failure. If %-EIO is returned, the physical eraseblock most probably
* went bad.
*/
int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum,
struct ubi_ec_hdr *ec_hdr)
{
int err;
uint32_t crc;
dbg_io("write EC header to PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
ec_hdr->magic = cpu_to_be32(UBI_EC_HDR_MAGIC);
ec_hdr->version = UBI_VERSION;
ec_hdr->vid_hdr_offset = cpu_to_be32(ubi->vid_hdr_offset);
ec_hdr->data_offset = cpu_to_be32(ubi->leb_start);
ec_hdr->image_seq = cpu_to_be32(ubi->image_seq);
crc = crc32(UBI_CRC32_INIT, ec_hdr, UBI_EC_HDR_SIZE_CRC);
ec_hdr->hdr_crc = cpu_to_be32(crc);
err = self_check_ec_hdr(ubi, pnum, ec_hdr);
if (err)
return err;
#ifdef CONFIG_PWR_LOSS_MTK_SPOH
PL_RESET_ON_CASE("NAND", "WRITE_EC_Header");
#endif
err = ubi_io_write(ubi, ec_hdr, pnum, 0, ubi->ec_hdr_alsize);
return err;
}
/**
* ubi_change_vtbl_record - change volume table record.
* @ubi: UBI device description object
* @idx: table index to change
* @vtbl_rec: new volume table record
*
* This function changes volume table record @idx. If @vtbl_rec is %NULL, empty
* volume table record is written. The caller does not have to calculate CRC of
* the record as it is done by this function. Returns zero in case of success
* and a negative error code in case of failure.
*/
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
struct ubi_vtbl_record *vtbl_rec)
{
int i, err;
uint32_t crc;
struct ubi_volume *layout_vol;
ubi_assert(idx >= 0 && idx < ubi->vtbl_slots);
layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];
if (!vtbl_rec)
vtbl_rec = &empty_vtbl_record;
else {
crc = crc32(UBI_CRC32_INIT, vtbl_rec, UBI_VTBL_RECORD_SIZE_CRC);
vtbl_rec->crc = cpu_to_be32(crc);
}
memcpy(&ubi->vtbl[idx], vtbl_rec, sizeof(struct ubi_vtbl_record));
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
err = ubi_eba_unmap_leb(ubi, layout_vol, i);
if (err)
return err;
#ifdef CONFIG_PWR_LOSS_MTK_SPOH
if(i==0)
{
PL_RESET_ON_CASE("NAND", "CreateVol_1");
}
else if(i==1)
{
PL_RESET_ON_CASE("NAND", "CreateVol_2");
}
#endif
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
ubi->vtbl_size);
if (err)
return err;
}
paranoid_vtbl_check(ubi);
return 0;
}
