imx6ull kernel NAND NFC geometry

KF2 — Sun, 29 May 2022 12:34:22 GMT

[ 1.658817] geo->gf_len = 13
[ 1.663419] geo->ecc_strength = 4
[ 1.667893] geo->page_size = 2084
[ 1.672621] geo->metadata_size = 10
[ 1.677215] geo->ecc_chunk0_size = 512
[ 1.681857] geo->ecc_chunkn_size = 512
[ 1.686532] geo->ecc_chunk_count = 4
[ 1.691002] geo->payload_size = 2048
[ 1.695772] geo->auxiliary_size = 16
[ 1.700325] geo->auxiliary_status_offset = 12
[ 1.704917] geo->block_mark_byte_offset = 2018
[ 1.709646] geo->block_mark_bit_offset = 4
[ 1.714146] geo->ecc_for_meta = 0

The NAND flash device is mt29f4g08abadawp,

Page size x8: 2112 bytes (2048 + 64 bytes), Main area is 2048B, Spare area is 64B

Block size: 64 pages (128K + 4K bytes)

It can be seen from the above printed information that block_mark_byte_offset = 2018;

First of all, I want to know why the Block Mark appears in the main area?

Then what does the Block Mark indicate? Is it a bad block mark?

Looking forward to your reply, thank!

topic imx6ull kernel NAND NFC geometry in i.MX Processors

imx6ull kernel NAND NFC geometry