Arria® 10 SoC Boot User Guide

ID 683735
Date 4/03/2019
Public
Document Table of Contents

1.3.2.3. 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 17. NAND Flash Image Layout for 256 KB Memory Blocks