CM-T54: Linux: Getting started - Revision history

Grinberg: /* Mount an NFS drive */

2015-06-18T13:44:17Z

‎Mount an NFS drive

Show changes

Grinberg: /* Install on mSATA drive */

2015-04-20T06:25:43Z

‎Install on mSATA drive

Lifshitz: /* Install on mSATA drive */

2014-12-29T10:41:54Z

‎Install on mSATA drive

Igor: /* Introduction */

2014-11-04T11:39:24Z

‎Introduction

Lifshitz: /* Select video out */

2014-06-24T09:33:42Z

‎Select video out

Lifshitz: /* Using installation environment on MMC/SD card */

2014-05-05T07:07:25Z

‎Using installation environment on MMC/SD card

New page

== Introduction ==
This article provides an introduction on how to install the Debian example root filesystem image on CM-T54 eMMC internal storage device.

== Preparation steps ==
* Obtain a PC workstation with a serial communication port.
* For networked installation you need to install a TFTP server on the host PC. For Windows machines we recommend [http://tftpd32.jounin.net/ TFTPD32] included in the Linux package for CM-T54 (link below).
* Download the Linux package for CM-T54 from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres CompuLab website]. Unzip the package to a directory on your host workstation.
* All image files mentioned below can be found in the {{filename|images}} subdirectory
* Connect the host PC to the SB-T54 base-board (connector P11) via the serial cable supplied with the evaluation kit.
* Start terminal emulation software on your PC. Set baud rate to 115200 bps, 8 bit per frame, 1 stop bit, no parity, no flow control.
* Turn on the CM-T54 evaluation system. The U-Boot boot-loader will start and you will get a command prompt.
*: {{Note|If the boot settings of your CM-T54 are different than default, you may need to press and hold '''Ctrl-C''' while turning the CM-T54 on, in order to get command prompt.}}

== Boot into the installation environment (ramdisk) ==
The first step in CM-T54 Linux installation is starting the installation environment (Linux kernel and Ramdisk image).
This can be done using the following media:
* [[#Using installation environment on MMC/SD card|MMC/SD card]]
* [[#Using installation environment from USB storage device|USB storage device]]
* [[#Using installation environment from TFTP server|Network TFTP server]]

=== Using installation environment on MMC/SD card ===
* Copy {{filename|kernel.img}}, {{filename|omap5-sbc-t54.dtb}}, {{filename|ramdisk.img}} and {{filename|bootscr.img}} from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to the root directory on the first partition of the MMC/SD card.
* Insert the MMC/SD card into the MMC/SD socket (P9) on the SB-T54 baseboard and reset the module.
* The installation environment boot will start automatically.
* To start installation environment boot manually, use the following U-Boot commands:
<pre>
CM-T54 # mmc dev 0
CM-T54 # mmc rescan
CM-T54 # load mmc 0 0x82000000 bootscr.img
CM-T54 # source 0x82000000
</pre>
* Continue to the [[#Install Kernel and Debian Linux Images | Install Kernel and Debian Linux Images]] section.

=== Using installation environment from USB storage device ===
* Copy {{filename|kernel.img}}, {{filename|omap5-sbc-t54.dtb}}, {{filename|ramdisk.img}} and {{filename|bootscr.img}} from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to the root directory on the first partition of the USB storage device.

* Insert USB storage device into SB-T54 USB port (P25 or P26).
* Remove MMC/SD card from the MMC/SD socket (P9) on the SB-T54 baseboard.
* Use the following U-Boot commands to start installation environment boot:
<pre>
CM-T54 # usb start
CM-T54 # load usb 0 0x82000000 bootscr.img
CM-T54 # source 0x82000000
</pre>

* Continue to the [[#Install Kernel and Debian Linux Images | Install Kernel and Debian Linux Images]] section.

=== Using installation environment from TFTP server ===
* Connect the SB-T54 Ethernet port to your local network.
* Put {{filename|kernel.img}}, {{filename|omap5-sbc-t54.dtb}}, and {{filename|ramdisk.img}} from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to a location accessible by the TFTP server:
*: - On Windows machine: copy {{filename|kernel.img}}, {{filename|omap5-sbc-t54.dtb}}, and {{filename|ramdisk.img}} to the same folder and point the TFTP server to that folder
*: - On Linux machine: copy {{filename|kernel.img}}, {{filename|omap5-sbc-t54.dtb}}, and {{filename|ramdisk.img}} to TFTP server root directory, usually {{filename|/tftpboot}} or {{filename|/tftproot}}.

* Initialize CM-T54 Ethernet controller:
<pre>
CM-T54 # usb start
</pre>
* You can use U-boot {{cmd|dhcp}} command to obtain IP address
<pre>
CM-T54 # dhcp
</pre>
:or manually set {{parameter|ipaddr}} environment variable:
<pre>
CM-T54 # setenv ipaddr <CM-T54 ip address>
</pre>
* Use the following U-Boot commands to start installation environment boot:
<pre>
CM-T54 # setenv bootargs "root=/dev/ram0 rw ramdisk_size=16384 console=ttyO3,115200n8 vram=16M ip=dhcp"
CM-T54 # tftpboot 0x88000000 omap5-sbc-t54.dtb
CM-T54 # tftpboot 0x82000000 kernel.img
CM-T54 # tftpboot 0x88080000 ramdisk.img
CM-T54 # bootz 0x82000000 0x88080000 0x88000000
</pre>

* Continue to the [[#Install Kernel and Debian Linux Images | Install Kernel and Debian Linux Images]] section.

=== Install Kernel and Debian Linux Images ===
After the ramdisk image is loaded the Linux login prompt will appear. Login as {{parameter|root}} into the system.
<pre>
compulab login: root
</pre>

==== Mount the installation source media ====

The next step is installing the kernel and Debian Linux images. The following media can be used as a source for installation:
* [[#Mount an MMC/SD Card|MMC/SD Card]]
* [[#Mount a USB Storage Device|USB storage device]]
* [[#Mount an NFS drive|NFS drive]]

===== Mount an MMC/SD Card =====
* Copy the {{filename|zImage-cm-t54}}, {{filename|omap5-sbc-t54.dtb}} and the {{filename|debian-image.tar.bz2}} from the [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to the root directory of any partition on the MMC/SD card. The partition can be formatted either ext2/3/4 or FAT file system.
* Insert the MMC/SD card into the SD socket (P9) on the SB-T54.
* The MMC/SD card is mounted automatically under /media/mmcblk0pX. Where X is the partition number.
* If for some reason the MMC/SD card hasn't been mounted automatically, use the following mount command:
<pre>
root@compulab:~# mkdir -p /media/mmcblk0pX && mount /dev/mmcblk0pX /media/mmcblk0pX
</pre>
* Continue to the [[#Install Images on eMMC | Install Images on eMMC]] section.

===== Mount a USB Storage Device =====
* Copy the {{filename|zImage-cm-t54}}, {{filename|omap5-sbc-t54.dtb}} and the {{filename|debian-image.tar.bz2}} from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to the root directory of any partition on the USB storage device.
* Plug the USB storage device to any USB host port (P25 or P26) on the SB-T54.
* The USB device is mounted automatically under /media/sdXY. Where X is the device letter and Y is the partition number.
* If for some reason the USB storage device hasn't been mounted automatically, use the following mount command:
<pre>
root@compulab:~# mkdir -p /media/sdXY && mount /dev/sdXY /media/sdXY
</pre>
* Continue to the [[#Install Images on eMMC | Install Images on eMMC]] section.

===== Mount an NFS drive =====
* Connect the CM-T54 Ethernet port (P13) to your local network.
* Copy the {{filename|zImage-cm-t54}}, {{filename|omap5-sbc-t54.dtb}} and the {{filename|debian-image.tar.bz2}} from the [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres Linux package for CM-T54] to a directory exported through NFS.
* During Ramdisk image booting the CM-T54 attempts to obtain an IP address using DHCP. If from some reason the IP address has not been obtained, use the following commands to obtain IP address for the CM-T54:
** Obtain IP using DHCP:<pre>root@compulab:~# ifup eth0</pre>
** If there is no DHCP server on the network, you can set a static IP address using {{cmd|ifconfig}}:<pre>root@compulab:~# ifconfig eth0 <ip address></pre>
* Mount the NFS share containing the {{filename|zImage-cm-t54}}, {{filename|omap5-sbc-t54.dtb}} and the {{filename|debian-image.tar.bz2}} files:
<pre>
root@compulab:~# mount -o nolock <host ip>:/path/to/nfs/share /mnt/net
</pre>
* Continue to [[#Install Images on eMMC | Install Images on eMMC]] section.

==== Install Images on eMMC ====
{{Note|The below procedure will work only on empty eMMC chip. If you have already used the eMMC, please delete all the partitions before proceeding.}}
* In this subsection the term {{filename|/mount/point}} can be:
** {{filename|/mnt/net}} if NFS is used
** {{filename|/media/mmcblk0pX}} if an MMC/SD card is used, where X is the partition number.
** {{filename|/media/sdXY}} if USB storage is used, where X is the USB drive letter and Y is the partition number.
* Create two partitions for the Linux kernel (FAT32 100M) and root file system (EXT4 the rest of the disk) on the eMMC:
<pre>
root@compulab:~# echo -e "n\np\n1\n2048\n204800\na\n1\nt\nc\nn\np\n2\n204801\n\nw\neof\n" | fdisk -u /dev/mmcblk0
</pre>
* Refresh the device nodes:
<pre>
root@compulab:~# mdev -s && umount /dev/mmcblk0p1 && umount /dev/mmcblk0p2
</pre>
* Format the first partition with FAT32 file system:
<pre>
root@compulab:~# mkfs.vfat -n boot /dev/mmcblk0p1
</pre>
* Format the second partition with EXT4 file system:
<pre>
root@compulab:~# mkfs.ext4 /dev/mmcblk0p2
</pre>
* Mount both partitions:
<pre>
root@compulab:~# mkdir -p /media/mmcblk0p1 && mount /dev/mmcblk0p1 /media/mmcblk0p1
root@compulab:~# mkdir -p /media/mmcblk0p2 && mount /dev/mmcblk0p2 /media/mmcblk0p2
</pre>
* Copy the {{filename|zImage-cm-t54}} and the {{filename|omap5-sbc-t54.dtb}} to the first (FAT) partition:
<pre>
root@compulab:~# cp /mount/point/zImage-cm-t54 /mount/point/omap5-sbc-t54.dtb /media/mmcblk0p1 && sync
</pre>
* Extract the content of {{filename|debian-image.tar.bz2}} onto the second partition:
<pre>
root@compulab:~# tar -xvpjf /mount/point/debian-image.tar.bz2 -C /media/mmcblk0p2 && sync
</pre>
* Remove MMC/SD card from SB-T54 MMC/SD card socket (if used for installation) and reboot the module:
<pre>
root@compulab:~# reboot
</pre>

== See also ==

* [[CM-T54: Linux: Debian]]
* [[CM-T54: Linux: Kernel]]
* [[Linux Development for ARM modules]]

[[Category:Linux|Getting started]]
[[Category:CM-T54|Linux: Getting started]]

@@ Line 152: / Line 152: @@
 * Extract the content of {{filename|debian-image.tar.bz2}} onto the second partition:
 <pre>
-root@compulab:~# tar -xvpjf /mount/point/debian-image.tar.bz2 -C /media/mmcblk0p2 && sync
+root@compulab:~# tar --numeric-owner -xvpjf /mount/point/debian-image.tar.bz2 -C /media/mmcblk0p2 && sync
 </pre>
 * Remove MMC/SD card from SB-T54 MMC/SD card socket (if used for installation) and reboot the module:
@@ Line 165: / Line 165: @@
 ** {{filename|/media/mmcblk0pX}} if an MMC/SD card is used, where X is the partition number.
 ** {{filename|/media/sdXY}} if USB storage is used, where X is the USB drive letter and Y is the partition number.
 * Identify mSATA drive special device file
@@ Line 197: / Line 193: @@
 * Extract the content of {{filename|debian-image.tar.bz2}} onto the second partition:
 <pre>
-root@compulab:~# tar -xvpjf /mount/point/debian-image.tar.bz2 -C /media/rootfs && sync
+root@compulab:~# tar --numeric-owner -xvpjf /mount/point/debian-image.tar.bz2 -C /media/rootfs && sync
 </pre>
 * Reboot the module:
@@ Line 209: / Line 205: @@
 ==== Select video out ====
-CM-T54 uses HDMI and LCD as primary video outputs.
+CM-T54 supports four video output devices: HDMI, DVI, LCD, LVDS. All of them are enabled by default.
-* DVI output can be enabled by adjusting U-Boot environment variable:
+* LCD output enabled (LVDS disabled)
 <pre>
-CM-T54 # setenv mmcloadfdt 'load mmc ${mmcdev} ${fdtaddr} ${fdtfile}; fdt addr ${fdtaddr}; fdt rm /aliases display2; fdt rm /display; fdt rm /ocp/dss/port/endpoint@1;'
+CM-T54 # setenv mmcloadfdt 'load mmc ${mmcdev} ${fdtaddr} ${fdtfile}; run fdt_adjust_video;'
 CM-T54 # saveenv
 </pre>
-* Enabling DVI output disables LCD output. To enable LCD output modify U-Boot environment variable:
+* Default settings
 <pre>

@@ Line 118: / Line 118: @@
 root@compulab:~#  mount -o nolock <host ip>:/path/to/nfs/share /mnt/net
 </pre>
 ==== Install Images on eMMC ====
@@ Line 159: / Line 158: @@
 root@compulab:~# reboot
 </pre>
 == After Installation ==
@@ Line 178: / Line 223: @@
 CM-T54 # setenv mmcloadfdt 'load mmc ${mmcdev} ${fdtaddr} ${fdtfile};'
 CM-T54 # saveenv
 </pre>

@@ Line 1: / Line 1: @@
 == Introduction ==
-This article provides an introduction on how to install the Debian example root filesystem image on CM-T54 eMMC internal storage device.
+This article provides an introduction on how to install the Debian example root filesystem image on the CompuLab CM-T54 System-on-Module / Computer-on-Module eMMC internal storage device.
 == Preparation steps ==