+++ /dev/null
-
- Nios Development Kit
- Cyclone Editions
-
- Last Update: January 2, 2004
-====================================================================
-
-This file contains information regarding U-Boot and the Altera
-Nios Development Kit, Cyclone Edition (DK-1C20). For general Nios
-information see doc/README.nios.
-
-For those interested in contributing ... see HELP WANTED section
-in doc/README.nios.
-
-Contents:
-
- 1. Files
- 2. Memory Organization
- 3. Examples
- 4. Programming U-Boot into FLASH with GERMS
- 5. Active Serial Memory Interface (ASMI) Support
-
-====================================================================
-
-1. Files
-=========
- board/altera/dk1c20/*
- include/configs/DK1C20.h
-
-2. Memory Organization
-=======================
-
- -The heap is placed below the monitor (U-Boot code).
- -Global data is placed below the heap.
- -The stack is placed below global data (&grows down).
-
-3. Examples
-============
-
-The hello_world example works fine. The default load address
-is 0x0100_0000 (the start of SDRAM).
-
-
-4. Programming U-Boot into FLASH with GERMS
-============================================
-The current version of the DK-1C20 port with the default
-configuration settings occupies about 81 KBytes of flash.
-A minimal configuration occupies less than 60 KByte (asmi
-and network support disabled).
-
-To program U-Boot into the DK-1C20 flash using GERMS do the
-following:
-
-1. From the command line, download U-Boot using the nios-run:
-
- $ nios-run -r u-boot.srec
-
-This takes about 45 seconds (GERMS is not very speedy here).
-After u-boot is downloaded it will be executed. You should
-see the following:
-
- U-Boot 1.0.0-pre (Oct 4 2003 - 07:39:24)
-
- CPU: Nios-32 Rev. 3.3 (0x3038)
- Reg file size: 256 LO_LIMIT/HI_LIMIT: 2/14
- Board: Altera Nios 1C20 Development Kit
- In: serial
- Out: serial
- Err: serial
- ==>
-
-
-2. Quit nios-run and start your terminal application (e.g. start
-Hyperterminal or minicom).
-
-3. Download the u-boot code to RAM. When using Hyperterminal, do the
-following:
-
- a. From the u-boot command prompt start a binary download to SRAM:
-
- ==> loadb 800000
-
- b. Download u-boot.bin using kermit.
-
-4. From the U-Boot command prompt, erase flash 0x40000 to 0x5ffff:
-
- ==> erase 1:4-5
-
-5. Copy the binary image from SRAM to flash:
-
- ==> cp.b 800000 40000 10000
-
-U-Boot will now automatically start when the board is powered on or
-reset using the Standard-32 configuration. To start U-Boot with the
-Safe-32 configuration, enter the following GERMS command:
-
- + g 40000
-
-5. Active Serial Memory Interface (ASMI) Support
-================================================
-ASMI is fully supported in U-Boot. Please note that ASMI is supported
-only on Cyclone devices. Do not expect ASMI to work with Stratix or
-APEX devices.
-
- ************* IMPORTANT *************
- ===================================================
- IN ORDER FOR THE NIOS ASMI TO OPERATE PROPERLY, THE
- CYCLONE DEVICE MUST BE CONFIGURED USING JTAG OR ASMI.
-
-There are two techniques you can use to bootstrap the ASMI. The
-first is to use the program_epcs utility that is part of Altera's SDK.
-But I've found program_epcs to be slow and cumbersome at best.
-
-An undocumented alternative is to use the Quartus device programing
-interface:
-
- 1. Select "Active Serial" mode.
-
- 2. Choose the xxx.pof file. For example, for the standard_32
- configuration use the "standard_32.pof" file.
-
- 3. Attach your ByteBlaster to J28. Make sure you have the
- cable attached properly -- the orientation of J28 is
- different than J24 (the JTAG header). On J28, pin 1 is on
- the bottom row, left-most pin.
-
- 4. Press and hold the "Power-On Reset" switch (SW10). You will
- see the green "Loading" and red "Error" LEDs (LED3 and LED4)
- in the on state.
-
- 5. While holding down the "Power-On Reset" switch, start the
- programming sequence. This only takes about 10 seconds.
-
- 6. After programming is complete, release the "Power-On Reset"
- switch. The Cyclone device should now load its configuration
- from the EPCS4 (U59). The green "User" LED (LED 1) should be
- blinking if the device was successfully loaded via ASMI.
-
- 7. Remove the ByteBlaster cable. The cable must be removed to
- allow the Nios ASMI access to the EPCS4 device.
-
-After you have successfully programmed a configuration into the
-EPCS4, the ASMI will be used to load the Cyclone configuration
-unless the "Force Safe" switch (SW9) is pressed.
-
-NOTE: To maximize the amount of space available for program use,
-you can enable configuration compression in Quartus. With compression
-enabled, the size of the standard_32 configuration data is
-approximately 192 KBytes.
-
-To use the U-Boot ASMI commands, try typing "help asmi" at the
-command prompt. The command "asmi info" will show the current
-status of the ASMI.
projects / karo-tx-uboot.git / blobdiff