Linux Kernel

Raunak Kalani

Hi,

I am working on TMS320C6A8167 ARM Cortex A8 processor. I have booted the processor with the Linux Kernel and want to know if I can display the kernel on my PC running Ubuntu 14.04. If so, how to do it?

Working on CCSv5.5.

Thanks

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Moving this to the C6A forum.

0 Pavel Botev over 10 years ago

TI__Guru**** 170625 points

Hi Raunak,

Have you ever established UART/console communication between your C6A board and Ubuntu PC? Are you using EZSDK, how exactly you are loading linux kernel in the C6A device?

Regards,
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

I got the board with Linux already loaded in the ARM processor. Using CCS I have been able to run some basic codes on the board. I am an absolute beginner and have no prior knowledge of the software hence I don't know what EZSDK is and how to use it. It would be really helpful if you could give the steps to display the Linux kernel.

Thank You
Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

From what I understand you need to view and interact with the linux kernel from UART console connected to your PC. I would recommend you to start exploring our EZSDK, it is free for download. If you need DVR RDK, you should acquire it through your local TI FAE.

www.ti.com/.../LINUXEZSDK-C6INTEGRA

software-dl.ti.com/.../index_FDS.html

After successful install, refer to the below documents:

ti-ezsdk_dm816x-evm_5_05_02_00/docs/DM816x_C6A816x_AM389x_EVM_Quick_start_guide.pdf
ti-ezsdk_dm816x-evm_5_05_02_00/docs/DM816x_EZ_Software_Developers_Guide.pdf

See also the below wiki page:
processors.wiki.ti.com/.../Sitara_Linux_SDK_Training - UBoot and Linux Kernel Debug using CCSv5 power point presentation

processors.wiki.ti.com/.../Sitara_Linux_Training:_uboot_linux_debug_with_ccsv5

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

The software support only Ubuntu 10.04 and 11.10 will I be able to run it on my Ubuntu 14.04 - 64 bit PC?

Thanks

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

I have Ubuntu 10.04 LTS 64-bit PC, and it is running fine. This EZSDK is validated only with these two versions of Ubuntu - 10 and 11. This EZSDK might also works fine with Ubuntu 14, but you should validate this yourself and also change setup scripts, libraries, dependencies, etc. See the below links for more info:

processors.wiki.ti.com/.../Sitara_Linux_SDK_64_Bit_Ubuntu_Support
processors.wiki.ti.com/index.php
processors.wiki.ti.com/.../Processor_SDK_Linux_Setup_Script
processors.wiki.ti.com/.../Processor_SDK_Linux_Getting_Started_Guide

e2e.ti.com/.../391653
e2e.ti.com/.../352437
e2e.ti.com/.../404150

Regards,
Pavel

0 Pavel Botev over 10 years ago in reply to Pavel Botev

TI__Guru**** 170625 points

One thing you should modify for sure is the ti-ezsdk_dm816x-evm_5_05_02_00/bin/setup-host-check.sh script, called from the ti-ezsdk_dm816x-evm_5_05_02_00/setup.sh script.

In the setup-host-check.sh script, only Ubuntu 10.04 LTS, Ubuntu 11.10 and Ubuntu 12.04 is supported. You should add Ubuntu 14 support there, if not the setup.sh script will fail.

Regards,
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

I downloaded the EZSDK but it requires a CodeSourcery Toolchain, but what I get from the site given is CodeSourcery Codebench which doesnot have the arm-none-linux-gnueabi-gcc which is required by the EZSDK to install. Please suggest the workaround.

Thanks
Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

www.codesourcery.com/.../arm-2009q1-203-arm-none-linux-gnueabi.bin

./arm-2009q1-203-arm-none-linux-gnueabi.bin

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

Sorry to bother again but I installed the EZSDK

Ran the setup.sh

Started minicom and loaded the script that was made by setup.sh (setup_uimage-tftp_fs-nfs.minicom)

I have connected the board with a USB as well as UART cable but I do not see anything happening i.e. no linux bootup or matrix load.

What am I doing wrong?

Thanks

Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak Kalani said:
and loaded the script that was made by setup.sh (setup_uimage-tftp_fs-nfs.minicom)

I am using picocom, and I am not using this script (made by the setup.sh).

host$ sudo picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx -vv"

picocom v1.4

port is        : /dev/ttyUSB0
flowcontrol    : none
baudrate is    : 115200
parity is      : none
databits are   : 8
escape is      : C-a
noinit is      : no
noreset is     : no
nolock is      : no
send_cmd is    : sx -vv
receive_cmd is : rz -vv

Terminal ready

When you plug UART-to-USB cable in the USB port of the host machine (Ubuntu PC), you should see /dev/ttyUSBx (in my case /dev/ttyUSB0). Then you pass this as a parameter to the picocom.

Do you have the same output as me in your linux terminal (Applications -> Accessories -> Terminal)?

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

No, I do not get the same output for send-cmd"sx-vv" but if I do not give the send-cmd I get the same screen but with send command as sz-vv

raunak@ubuntu:~$ sudo picocom -b 115200 /dev/ttyUSB0 --send-cmd"sx-vv"
Unrecognized option.
Run with '--help'.

raunak@ubuntu:~$ sudo picocom -b 115200 /dev/ttyUSB0
picocom v1.7

port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 115200
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,

Terminal ready

After this It asks for login .

How should I login and how do I run my C code on this Linux.
I already tried root and user as login names.

Thanks
Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

Raunak Kalani said:
raunak@ubuntu:~$ sudo picocom -b 115200 /dev/ttyUSB0 --send-cmd"sx-vv"

This is not correct, as you do not have space between --send-cmd and "sx -vv".

You have: --send-cmd"sx -vv"

It should be: --send-cmd "sx -vv"

Raunak Kalani said:
After this It asks for login .

How should I login

Can you try without sudo command?

raunak@ubuntu:~$ picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx-vv"

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

I tried without sudo then also login as root failed.

baudrate is    : 115200
parity is      : none
databits are   : 8
escape is      : C-a
local echo is : no
noinit is      : no
noreset is     : no
nolock is      : no
send_cmd is    : sx-vv
receive_cmd is : rz -vv
imap is        :
omap is        :
emap is        : crcrlf,delbs,

Terminal ready

_____                    _____           _         _
| _ |___ ___ ___ ___   | _ |___ ___ |_|___ ___| |_
|     | _| .'| . | . | |   __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
              |___|                    |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login: root

_____                    _____           _         _
| _ |___ ___ ___ ___   | _ |___ ___ |_|___ ___| |_
|     | _| .'| . | . | |   __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
              |___|                    |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login: root

_____                    _____           _         _
| _ |___ ___ ___ ___   | _ |___ ___ |_|___ ___| |_
|     | _| .'| . | . | |   __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
              |___|                    |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login:

Any way to change password?

Thanks

Raunak

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

I tried it without sudo. Login Name does not entertain "root".

baudrate is : 115200
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sx-vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,

Terminal ready

_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login: root

_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login: root

_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project http://arago-project.org tmdxscbp6618x ttyO0

Arago 2011.06 tmdxscbp6618x ttyO0

tmdxscbp6618x login:

Any way to change the password?

Thanks
Raunak

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Thanks Pavel it worked after disconnecting and reconnecting the EVM.

Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Glad to see it works fine. Regarding the password change, you can have a read our presentation and wiki page regarding Linux initial scripts available at the below link.

processors.wiki.ti.com/.../Sitara_Linux_SDK_Training

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

Just one more thing, the evm is not able to access the home directory of the targetfs and hence unable to run the helloworld program with procedure given on processors.wiki.ti.com/.../DM816x_EZ_5.03_Software_Developers_Guide

using cd /home/root gives cannot cd to root.

Thanks
Raunak

0 Raunak Kalani over 10 years ago in reply to Raunak Kalani

Intellectual 510 points

just to add the terminal text

root@tmdxscbp6618x:/home# ls
root
root@tmdxscbp6618x:/home# cd root
root@tmdxscbp6618x:~#

the page says to run the helloworld stored in /home/root/dm816x , but doing cd /home/root/ is now returning me to the start as can be seen in the terminal snippet

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Can you provide me your boot arguments? Are you loading your rootfs from ethernet/EMAC?

Do you have the below folder on your Ubuntu PC?
/home/users/raunak/targetfs/home/root/

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

I have the folder /home/raunak/targetfs/home/root where i have made another folder dm816x and placed the helloworld executable there.

what is rootfs?

My steps:

run picocom -b 115200 /dev/ttyUSB0 --send-cmd"sx-vv"in the terminal

give root as login password

follow the steps in the above site

I do not have ethernet connection to the SCBP board.

P.S. the board was loaded with Arago build with

U-Boot binary:

u-boot-tmdxscbp6618x-git-r0.0.noxip.bin

Kernal binary:

uImage-2.6.37-r0-r0rtmdxscbp6618x.bin

Thanks

Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

Raunak Kalani said:
I have the folder /home/raunak/targetfs/home/root where i have made another folder dm816x and placed the helloworld executable there

Can you try to place the executable in /home/raunak/targetfs/home/root/ or in /home/raunak/targetfs/home/. Is there any difference?

Raunak Kalani said:
what is rootfs?

rootfs means root filesystem, the filesystem used with the linux kernel.

Raunak Kalani said:

My steps:

run picocom -b 115200 /dev/ttyUSB0 --send-cmd"sx-vv"in the terminal

give root as login password

Can you provide me full console output log?

Raunak Kalani said:
I do not have ethernet connection to the SCBP board

These steps are valid when you have ethernet connection between host (Ubuntu PC) and target (C6 Intergra board).

Regards,
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

raunak@ubuntu:~$ picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx-vv"
picocom v1.7

port is        : /dev/ttyUSB0
flowcontrol    : none
baudrate is    : 115200
parity is      : none
databits are   : 8
escape is      : C-a
local echo is : no
noinit is      : no
noreset is     : no
nolock is      : no
send_cmd is    : sx-vv
receive_cmd is : rz -vv
imap is        :
omap is        :
emap is        : crcrlf,delbs,

Terminal ready
at 0x005178c0: read 0xd8a374fe,

U-Boot 2010.06 (Oct 26 2011 - 15:33:11)

TI8168-GP rev 1.1

ARM clk: 987MHz
DDR clk: 398MHz

DRAM: 2 GiB
NAND: HW ECC Hamming Code selected
256 MiB

     ######      ######     ########     ########
    ##    ##    ##    ##    ##     ##    ##     ##
    ##          ##          ##     ##    ##     ##
     ######     ##          ########     ########
          ##    ##          ##     ##    ##
    ##    ##    ##    ##    ##     ##    ##
     ######      ######     ########     ##

Net:   Detected MACID:d4:94:a1:a6:5:6c
DaVinci EMAC
Hit any key to stop autoboot: 0

NAND read: device 0 offset 0x280000, size 0x440000
4456448 bytes read: OK
## Booting kernel from Legacy Image at 81000000 ...
   Image Name:   Arago/2.6.37-r0/tmdxscbp6618x
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2068588 Bytes = 2 MiB
   Load Address: 80008000
   Entry Point: 80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Linux version 2.6.37 (a0868396@gta0868396-ubuntu10) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #1 Thu Sep 29 17:38:36 EDT 2011
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: tmdxscbp6618x
bootconsole [earlycon0] enabled
reserved size = 0 at 0
Memory policy: ECC disabled, Data cache writeback
OMAP chip is TI8168 1.1
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
Kernel command line: console=ttyO0,115200n8 root=/dev/mtdblock3 rootfstype=jffs2 rw noinitrd earlyprintk mem=512m mtdparts=omap2-nand.0:2432k(uboot)ro,128k(params)ro,4352k(kernel),204928k(filesystem),-(reserved)
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 512MB = 512MB total
Memory: 515332k/515332k available, 8956k reserved, 0K highmem
Virtual kernel memory layout:
    vector : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap : 0xfff00000 - 0xfffe0000   ( 896 kB)
    DMA     : 0xffc00000 - 0xffe00000   (   2 MB)
    vmalloc : 0xe0800000 - 0xf8000000   ( 376 MB)
    lowmem : 0xc0000000 - 0xe0000000   ( 512 MB)
    modules : 0xbf000000 - 0xc0000000   ( 16 MB)
      .init : 0xc0008000 - 0xc0035000   ( 180 kB)
      .text : 0xc0035000 - 0xc03e5000   (3776 kB)
      .data : 0xc03e6000 - 0xc041cec0   ( 220 kB)
SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:375
IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
Total of 128 interrupts on 1 active controller
GPMC revision 6.0
Trying to install interrupt handler for IRQpt handler for IRQ371
Trying to install interrupt handler for IRQ372
Trying to install interrupt handler for IRQ373
Trying to install interrupt handler for IRQ374
Trying to install type control for IRQ375
Trying to set irq flags for IRQ375
OMAP clockevent source: GPTIMER1 at 27000000 Hz
Console: colour dummy device 80x30
Calibrating delay loop... 986.31 BogoMIPS (lpj=4931584)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
omap_voltage_early_init: voltage driver support not added
regulator: core version 0.5
regulator: dummy:
NET: Registered protocol family 16
omap_mux_init: Add partition: #1: core, flags: 0
pm_dbg_init: only OMAP3 supported
Registered ti81xx_fb device
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource gp timer
musb-hdrc: version 6.0, host, debug=0
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 16384 bind 16384)
TCP reno registered hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

Raunak Kalani said:
Kernel command line: console=ttyO0,115200n8 root=/dev/mtdblock3 rootfstype=jffs2 rw noinitrd earlyprintk mem=512m mtdparts=omap2-nand.0:2432k(uboot)ro,128k(params)ro,4352k(kernel),204928k(filesystem),-(reserved)

You are booting your board from NAND flash, it seems your board come with already flashed NAND chip. In order to be able to execute your application, you should place/flash it in NAND. The NAND filesystem come from ti-ezsdk_dm816x-evm_5_05_02_00/filesystem/arago-base-tisdk-image-dm816x-evm.tar.gz. You should untar this file, place your executable and then transform this folder into JFFS2 or UBIFS format for flash it into NAND. This is not an easy task.

C6A device can boot from: SD card, Network/Ethernet, NAND, SPI, NOR

I would recommend you to try first with SD card. You need SD card reader connected to your host (Ubuntu PC) through USB cable. You should plug SD card into the card reader and follow the instructions from ti-ezsdk_dm816x-evm_5_05_02_00/docs/DM816x_EZ_Software_Developers_Guide.pdf, 6.7 How to create an SD card. The mksdboot.sh script will create two partitions in your SD card, BOOT and ROOTFS. BOOT partition/folder will contain the pre-built u-boot and linux kernel from the ti-ezsdk_dm816x-evm_5_05_02_00/board-support/prebuilt-images/ folder. ROOTFS partition/folder will contain your filesystem which is based on ti-ezsdk_dm816x-evm_5_05_02_00/filesystem/ezsdk-dm816x-evm-rootfs.tar.gz.

After mksdboot.sh script finished, you just need to place your executable in the /ROOTFS/home/root/ folder. Then remove the SD card from the PC, place it in the target board, configure the boot pins for SD boot and power on the board.

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Thanks Pavel I was able to get the file over tftp server and run it on the board using tftp -g -r helloworld 192.168.1.1 69 from tftpboot folder.

Raunak

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi Pavel

I am trying to run the whole thing in windows as well and want a arm compiler for the platform. Can you share the link for a .exe file.

Thanks

Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

For ARM cross compiler for Windows OS, you should get it from Mentor:

www.mentor.com/.../lite-edition

Search for CodeSourcery G++ Lite 2009q1-203 for Windows OS.

BR
Pavel

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