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Ixiasoft
14.4.3.2. NAND Page Main and Spare Areas
The sizes of the main and spare areas, and the number of blocks in a page, depend on the specific NAND device connected to the NAND flash controller. Therefore, the device‑dependent registers, device_main_area_size, device_spare_area_size, and pages_per_block, must be programmed to match the characteristics of the device.
If your software does not perform the discovery and initialization sequence, the software must include an alternative method to determine the correct value of the device‑dependent registers. The HPS boot ROM code enables discovery and initialization by default (that is, bootstrap_inhibit_init = 0).