Moxa Technologies UC-7420/7410 user manual Flash Memory Map, Linux Tool Chain Introduction

UC-7420/7410 User’s Manual Programmer’s Guide

Flash Memory Map

Partition sizes are hard coded into the kernel binary. To change the partition sizes, you will need to rebuild the kernel. The flash memory map is shown in the following table.

Address	Size	Contents
0x00000000 – 0x0005FFFF	384 KB	Boot Loader—Read ONLY
0x00060000 – 0x0015FFFF	1 MB	Kernel object code—Read ONLY
0x00160000 – 0x0055FFFF	4 MB	Mini root file system (EXT2) —Read ONLY
0x00560000 – 0x01F5FFFF	26 MB	User root file system (JFFS2) —Read/Write
0x01F60000 – 0x01FBFFFF	384 KB	Not used
0x01FC0000 – 0x01FDFFFF	128 KB	Boot Loader configuration—Read ONLY
0x01FE0000 – 0x01FFFFFF	128 KB	Boot Loader directory—Read ONLY

Mount the user file system to /mnt/usrdisk with the root file system. Check to see if the user file system was mounted correctly. If user file system is okay, the kernel will change the root file system to /mnt/usrdisk. If the user file system is not okay, the kernel will use the default Moxa file system. To finish boot process, run the init program.

NOTE 1. The default Moxa file system only enables the network and CF. It lets users recover the user file system when it fails.

2.The user file system is a complete file system. Users can create and delete directories and files (including source code and executable files) as needed.

3.Users can create the user file system on the PC host or target platform, and then copy it to the UC-7420/7410.

Linux Tool Chain Introduction

To ensure that an application will be able to run correctly when installed on UC-7420/7410, you must ensure that it is compiled and linked to the same libraries that will be present on the UC-7420/7410. This is particularly true when the RISC Xscale processor architecture of the UC-7420/7410 differs from the CISC x86 processor architecture of the host system, but it is also true if the processor architecture is the same.

The host tool chain that comes with UC-7420/7410 contains a suite of cross compilers and other tools, as well as the libraries and headers that are necessary to compile applications for UC-7420/7410. The host environment must be running Linux to install the UC-7420/7410 GNU Tool Chain. We have confirmed that the following Linux distributions can be used to install the tool chain:

Redhat 7.3/8.0/9.0, Fefora core 1 & 2.

The Tool Chain will need about 100 MB of hard disk space on your PC. The UC-7420/7410 Tool Chain is located on the UC-7420/7410 CD. To install the Tool Chain, insert the CD into your PC and then issue the following commands:

#mount /dev/cdrom /mnt/cdrom

#rpm –ivh /mnt/cdrom/mxscaleeb-3.3.2-1.386.rpm

Wait for a few minutes while the Tool Chain is installed automatically on your Linux PC. Once the host environment has been installed, add the directory /usr/local/mxscaleb/bin to your path and the directory /usr/local/mxscaleb/man to your manual path. You can do this temporarily for the current login session by issuing the following commands:

#export PATH=“/usr/local/mxscaleb/bin:$PATH”

#export MANPATH=“/usr/local/mxscaleb/man:$PATH”

Alternatively, you can add the same commands to $HOME/.bash_profile to cause it to take effect for all login sessions initiated by this user.

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