Altera Cyclone III LS FPGA Manuel d'utilisateur télécharger pdf (Page 36)

A–2 Appendix A: Programming the Flash Memory Device

Preparing Design Files for Flash Programming

Cyclone III LS FPGA Development Kit User Guide © October 2009 Altera Corporation

c Altera recommends that you do not overwrite the factory hardware and factory

software images unless you are an expert with the Altera tools or deliberately

overwriting the factory design. If you unintentionally overwrite the factory hardware

or factory software image, refer to “Restoring the Flash Device to the Factory Settings”

on page A–4.

Preparing Design Files for Flash Programming

You can obtain designs containing prepared .flash files from the Cyclone III LS FPGA

Development Kit page on the Altera website or create .flash file

s from your own

custom design.

The Nios II EDS sof2flash command

line utility converts your Quartus II-compiled

.sof into the .flash format necessary for the flash device. Similarly, the Nios II EDS

elf2

flash command line utility converts your compiled and linked Executable and

Linking Format File (.elf) software design to .flash. After your design files are in the

.flash format, use the Board Update Portal or the Nios II EDS nios2-flash-

ogrammer utility to write the .flash files to the user hardware and user software

locations of the flash memory.

f For

more information about Nios II EDS software tools and practices, refer to the

Embedded Software Development page on the Altera website.

Creating Flash Files Using the Nios II EDS

If you have an FPGA design developed using the Quartus II software, and software

developed using the Nios II EDS, follow these instructions:

1. On the Windows Start menu, click All Programs > Al

tera > Nios II EDS > Nios II

Command Shell.

2. In the Nios II command shell, navigate to the directory where your design files

reside and type the following Nios II EDS commands:

 For Quartus II .sof files:

sof2flash --input=<yourfile>_hw.sof --output=<yourfile>_hw.flash --offset=0x0640000 r

 For Nios II .elf files:

elf2flash --base=0x0A000000 --end=0x0BFFFFFF --reset=0x0A820000

--input=<yourfile>_sw.elf --output=<yourfile>_sw.flash

--boot=$SOPC_KIT_NIOS2/components/altera_nios2/boot_loader_cfi.srec r

The resulting .flash files are ready for flash device programming. If your design uses

additional files such as image data or files used by the runtime program, you must

first convert the files to .flash format and concatenate them into one .flash file before

using the Board Update Portal to upload them.

1 The Boar

d Update Portal standard .flash format conventionally uses either

<filename>_hw.flash for hardware design files or <filename>_sw.flash for software

design files.

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Altera Cyclone III LS FPGA Manuel d'utilisateur Page 36

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