Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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A.4.4.2. NAND Flash Devices

The NAND subsystem reserves at least the first 1 MB on the NAND device. If the NAND flash device has blocks greater than 256 KB, then the NAND subsystem reserves the first four blocks on the device. For a NAND device with less than 256 KB block size, the second-stage boot loader image must be placed in multiple blocks. The NAND subsystem expects to find up to four second-stage boot loader images on the NAND device. You may have less than four images if required. The second-stage boot loader image should always be at the start of a physical page. Because a block is the smallest area used for erase operation, any update to a particular image does not affect other images.

Figure 166. NAND Flash Image Layout for 256 KB Memory Blocks