Visible to Intel only — GUID: iga1431621639422
Ixiasoft
Visible to Intel only — GUID: iga1431621639422
Ixiasoft
19.3.1. Booting Nios® II from Flash20.3.1. Booting Nios® II from Flash
Booting the Nios® II from an flash will use a flow similar to Compact Flash Interface (CFI). The boot copier used will be the same one used for CFI flash.
The boot copier will be located in flash. This has a potential performance impact on the bootcopying process, which can be mitigated by using a flash cache.
There are two main scenarios when booting from flash:
- Executing in place
In this scenario, boot copier will not be required. Nios® II will directly execute customer code which located in flash.
- Boot copying the code to volatile memory
In this scenario, boot copier is required. Nios® II will run the boot copier code where the boot copier will copy customer code to volatile memory. This is normally used when customer concern about their code run time performance.