Kontron AM4150 User Manual
» User Guide «
AM4150
U-Boot Bootloader
Doc. ID: 1052-5678, Rev. 1.0
July 27, 2012
If it’s embedded, it’s Kontron.
P R E L I M I N A R Y
Preface AM4150 U-Boot Bootloader
Revision History
Publication Title:
Doc. ID: 1052-5678
Rev. Brief Description of Changes Date of Issue
1.0 Initial issue based on the following U-Boot version:
U-Boot 2011.09-01425-g8c4588b (Jun 20 2012 - 10:36:29)
AM4150 U-Boot Bootloader User Guide
27-Jul-2012
Imprint
Kontron Modular Computers GmbH may be contacted via the following:
MAILING ADDRESS TELEPHONE AND E-MAIL
Kontron Europe GmbH +49 (0) 800-SALESKONTRON
Sudetenstraße 7 sales@kontron.com
D - 87600 Kaufbeuren Germany
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For further information about other Kontron products, please visit our Internet web site:
www.kontron.com.
Disclaimer
Copyright © 2012 Kontron AG. All right s reserved. All dat a is for information purposes only and
not guaranteed for legal purposes. Information has been carefully checked and is believed to
be accurate; however, no responsibility is assumed for inaccuracies. Kontron and the Kontron
logo and all other trademarks or registered trademarks are the property of their respective owners and are recognized. Specifications are subject to change without notice.
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AM4150 U-Boot Bootloader Preface
Table of Contents
Revision History ........................................................................................................2
Imprint ....................................................................................................................... 2
Disclaimer .................................................................................................................2
Table of Contents ...................................................................................................... 3
Copyrights and Licensing .......................................................................................... 5
Obtaining Source Code ........................................................................................... 10
1. Introduction to U-Boot ................................................................11
2. Standard U-Boot Commands .....................................................11
3. Kontron-Specific Commands .....................................................14
3.1 flsw Command ..........................................................................................15
3.2 fru Command ............................................................................................16
3.3 fwum Command ........................................................................................18
3.4 kboardinfo Command ................................................................................ 20
3.5 kcs Command ............................................................................................ 21
3.6 md5sum Command ................................................................................... 24
3.7 sconf Command .........................................................................................26
3.8 tlbdbg Command ........................................................................................ 31
3.9 vpd Command ............................................................................................32
4. U-Boot Access and Startup ........................................................33
5. Environment ................................................................................34
P R E L I M I N A R Y
6. Working with U-Boot ...................................................................34
6.1 General Operation ...................................................................................... 34
6.2 Using the sconf Command ......................................................................... 34
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Preface AM4150 U-Boot Bootloader
6.2.1 Overview of Board Configuration Options .........................................35
6.2.2 Example of sconf Command Usage ...................................................36
6.2.2.1 sconf info ...................................................................................36
6.2.2.2 sconf select ................................................................................37
6.2.2.3 sconf set ....................................................................................37
6.2.2.4 sconf save reset .........................................................................38
6.2.2.5 sconf status ................................................................................38
6.3 Using the Network ......................................................................................39
6.3.1 Interface Selection .............................................................................39
6.3.1.1 ethprime .....................................................................................40
6.3.1.2 ethact .........................................................................................40
6.3.1.3 ethrotate .....................................................................................40
6.3.2 Contacting the Server .........................................................................41
6.4 Using SD Cards ..........................................................................................41
6.5 Using SATA Devices ...................................................................................42
6.6 Using the Onboard NAND Flash .................................................................43
6.7 Using the SPI Flash for OS .........................................................................44
6.8 Booting an OS ............................................................................................44
6.8.1 Booting Linux .....................................................................................44
6.8.2 Booting VxWorks ................................................................................45
6.9 Getting Help ................................................................................................46
6.10 Update ........................................................................................................47
6.11 Recovery Mechanism .................................................................................47
P R E L I M I N A R Y
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AM4150 U-Boot Bootloader Preface
Copyrights and Licensing
U-Boot is Free Software. It is copyrighted by Wolfgang Denk and many others who contributed
code (see the actual source code for details). You can redistribute U-Boot and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. Most of it can also be distributed, at your option, under any later version of
the GNU General Public License -- see individual files for exceptions.
NOTE! This license does *not* cover the so-called "standalone" applications that use U-Boot
services by means of the jump table provided by U-Boot exactly for this purpose - this is merely
considered normal use of U-Boot, and does *not* fall under the heading of "derived work".
The header files "include/image.h" and "include/asm-*/u-boot.h" define interfaces to U-Boot. Including these (unmodified) header files in another file is considered normal use of U-Boot, and
does *not* fall under the heading of "derived work".
Also note that the GPL below is copyrighted by the Free Software Foundation, but the instance
of code that it refers to (the U-Boot source code) is copyrighted by me and others who actually
wrote it.
-- Wolfgang Denk
======================================================================
GNU GENERAL PUBLIC LICENSE
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Everyone is permitted to copy and distribute verbatim copies of this license document, but
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Preface AM4150 U-Boot Bootloader
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AM4150 U-Boot Bootloader Preface
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Preface AM4150 U-Boot Bootloader
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AM4150 U-Boot Bootloader Preface
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Preface AM4150 U-Boot Bootloader
Obtaining Source Code
The software included in this product contains copyrighted software that is licensed under the
GPL. A copy of that license is included in this document beginning on page 5. You may obtain
the complete corresponding source code from Kontron for a period of three years af ter our last
shipment of this product. Please contact Kontron for further assist ance in obt a ining the source
code.
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Page 10 ID 1052-5678, Rev. 1.0
AM4150 U-Boot Bootloader U-Boot Usage
1. Introduction to U-Boot
U-Boot is an open source bootloader software developed and maintained by DENX Software
Engineering GmbH (http://www.denx.de). Kontron provides U-Boot with all its standard features as well as Kontron-specific features for usage with Kontron’s AM4150 AMC module.
This user guide provides specific information on Kontron’s implementation of U-Boot and its usage. Please refer to the DENX web site for up-to-date on-line documentation of all of U-Boot’s
standard features.
2. Standard U-Boot Commands
U-Boot is provided with a set of standard commands for which documentation is available on
the DENX web site. Some of the standard commands have sub -groups which can be displayed
when help for the main group command is requested. Where relevant, further information concerning the usage of standard commands is provided in this guide to assist users in performing
specific functions.
The following table indicates the standard U-boot commands configured for the AM4150. The
blue-shaded table cells indicate st andar d U-Boot commands te sted by Ko ntron. Only the st andard U-Boot commands relevant for the normal operation of the AM4150 U-Boot bootloader
have been tested by Kontron.
Table 1: Standard U- Boot Commands Configured for the AM4150
COMMAND DESCRIPTION
? Alias for 'help'
base Print or set address offset
bdinfo Print Board Info structure
boot Boot default, i.e., run 'bootcmd'
bootd Boot default, i.e., run 'bootcmd'
bootelf Boot from an ELF image in memory
bootm Boot application image from memory
bootp Boot image via network using BOOTP/TFTP protocol
bootvx Boot vxWorks from an ELF image
chpart Change active partition
cmp Memory compare
P R E L I M I N A R Y
coninfo Print console devices and information
cp Memory copy
cpu Multiprocessor CPU boot manipulation and release
crc32 Checksum calculation
dhcp Boot image via network using DHCP/TFTP protocol
echo Echo args to console
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U-Boot Usage AM4150 U-Boot Bootloader
Table 1: Standard U- Boot Commands Configured for the AM4150 (continued)
COMMAND DESCRIPTION
editenv Edit environment variable
env Environment handling commands
errata Report errata workarounds
exit Exit script
ext2load Load binary file from an Ext2 filesystem
ext2ls List files in a directory (default /)
false Do nothing, unsuccessfully
fatinfo Print information about filesystem
fatload Load binary file from a dos filesystem
fatls List files in a directory (default /)
fdt Flattened device tree utility commands
fsinfo Print information about filesystems
fsload Load binary file from a filesystem image
go Start application at address 'addr'
grepenv Search environment variables
help Print command description/usage
i2c I2C subsystem
iminfo Print header information for application image
imxtract Extract a part of a multi-image
interrupts Enable or disable interrupts
irqinfo Print information about IRQs
itest Return true/false on integer compare
P R E L I M I N A R Y
loadb Load binary file over serial line (kermit mode)
loads Load S-Record file over serial line
loady Load binary file over serial line (ymodem mode)
loop Infinite loop on address range
ls List files in a directory (default /)
md Memory display
mdio MDIO utility commands
mii MII utility commands
mm Memory modify (auto-incrementing address)
mmc MMC sub sy stem
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AM4150 U-Boot Bootloader U-Boot Usage
Table 1: Standard U- Boot Commands Configured for the AM4150 (continued)
COMMAND DESCRIPTION
mmcinfo Display MMC info
mtdparts Define flash/nand partitions
mtest Simple RAM read/write test
mw Memory write (fill)
nand NAND subsystem
nboot Boot from NAND device
nfs Boot image via network using NFS protocol
nm Memory modify (constant address)
pci List and access PCI Configuration Space
ping Send ICMP ECHO_REQUEST to network host
printenv Print environment variables
reginfo Print register information
reset Perform RESET of the CPU
run Run commands in an environment variable
sata SATA sub-system
saveenv Save environment variables to persistent storage
saves Save S-Record file over serial line
setenv Set environment variables
setexpr Set environment variable as the result of eval expression
sf SPI flash subsystem
showvar Print local hushshell variables
sleep Delay execution for some time
source Run script from memory
test Minimal test like /bin/sh
tftpboot Boot image via network using TFTP protocol
true Do nothing, successfully
P R E L I M I N A R Y
ubi ubi commands
ubifsload Load file from an UBIFS filesystem
ubifsls List files in a directory
ubifsmount Mount UBIFS volume
ubifsumount Unmount UBIFS volume
version Print monitor, compiler and linker version
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U-Boot Usage AM4150 U-Boot Bootloader
3. Kontron-Specific Commands
Kontron’s implementation of U-Boot includes certain enhancements to provide specific functions not incorporated in the standard U-Boot. The following table provides a complete listing
of all Kontron-specific U-Boot commands implemented on the AM4150.
Table 2: Kontron-Specific Commands
COMMAND DESCRIPTION
flsw FLash SWitch
Indicates or selects the currently active SPI boot flash
fru Field Replaceable Unit
Provides read/write access to the board’s FRU repository as well as displaying FRU data
fwum FirmWare Update Manager
Provides functions for managing and updating the module’s MMC firmware
kboardinfo Kontron Board Information
Displays a summary of board and configuration information
kcs Access to the Keyboard Controller-Style Interface
Sends raw IPMI commands via the KCS interface
md5sum Message digest 5 checksum
Creates or checks the md5 message digest over a memory area
sconf Kontron Board Configuration
Provides functions for software-based configuration of external interfaces available on the
AMC Card-edge connector and on the front panel connectors J2 (GbE B)
tlbdbg Translation Look-aside Buffer DeBuG
Displays current configuration of TLB0 and TLB1
vpd Vital Product Data
Provides display and importing functions for vital product data entities
The following chapters provides command syntax reference information, a short description,
and, in some cases, usage examples. Where an ellipsis (…) appears in the command syntax,
it means that the command is continued on the next line. Observe spaces before the ellipsis.
P R E L I M I N A R Y
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AM4150 U-Boot Bootloader U-Boot Usage
3.1 flsw Command
flsw
FUNCTION: Indicates or selects the currently active SPI boot flash
SYNTAX: flsw [s|r]
where:
flsw command:
issuing the command without arguments will indicate
the currently active SPI boot flash
(also returns “true” or “false” depending on the currently active flash)
s option: standard
selects the standard SPI boot flash as the active flash
r option: recovery
selects the recovery SPI boot flash as the active flash
DESCRIPTION: This command is used to determine the currently active SPI boot flash
or to select either the standard SPI boot flash or the recovery SPI boot
flash as the currently active flash.
In addition, this command returns “true” if the standard SPI boot flash is
selected or “false” if the recovery SPI boot flash is selected. This is used
in the update scripts to prevent the recovery SPI boot flash from being
updated.
Besides this command, the currently active SPI boot flash may also be
selected either via the DIP Switch SW2, switch 2, or the “Set Control
State” IPMI OEM command. For further information, refer to the
AM4150 User Guide and to the AM4150 IPMI User Guide, respectively.
The output of this command always shows the current state.
USAGE: Query flash status
COMMAND / RESPONSE:
=> flsw
standard boot flash active
=>
Select the standard SPI boot flash as currently active flash
COMMAND / RESPONSE:
P R E L I M I N A R Y
=> flsw s
=>
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