Regarding U-boot and Linux source code

Sivanantham S

Intellectual 840 points

Other Parts Discussed in Thread: 66AK2H12

Hi,

We are doing custom board using 66Ak2H12 processor. The u-boot,Linux source codes have to be customized.

We require clarifications on u-boot and Linux source codes

1.In u-boot source code we are finding two types

a)K2_UBOOT_2013_01_15.07_01 tagged

b)ti-u-boot-2016.03 tagged (Hopefully this and latest PSDK are same)

We found differences in the above versions.Can anyone explain why two different versions are maintained in git repository?

Is there any advantages or any extra driver support available in this versions?

2. Code for booting over SRIO is present in K2_UBOOT_2013_01_15.07_01. We have used a part of this driver for initializing SRIO interface but its not working. It's getting stuck at the SRIO PLL settings.

3.. In Linux source codes also we are finding differences,

a) K2_RT_LINUX_3.10.72_15.08 tagged Linux. it is updated upto 3.10.72 not beyond.

b) K2_LINUX_3.13.00_14.05 tagged Linux

c) rio-dev-dio tagged Linux (supports rionet driver?) it is updated upto 3.10.10 not beyond.

d) Processor SDK is following 4.1 Linux (is it containing RIO net driver)

Is there any specific reasons are there to maintain these may versions in git repo?

Regards,

Sivanantham

over 9 years ago

0 Rex Chang over 9 years ago

TI__Guru 50170 points

Hi, Sivanantham,

K2_UBOOT_2013_01_15.07_01 was a tag for MCSDK 2.1.4.7 before it migrates to ProcSDK 2.0.1 and now 2.0.2. ti-uboot-2016.03 is tag for upstream code. I would suggest that you take the u-boot and Linux kernel from the SDK page. The latest ProcSDK 2.0.2 for K2H is available at http://software-dl.ti.com/processor-sdk-linux/esd/K2HK/02_00_02_11/index_FDS.html or as described in "Build Information" of "Processor SDK Linux Kernel Release Notes", http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_Kernel_Release_Notes

The upstreamable code usually lags behind the SDK releases.

The tags with _RT_ is for RT Linux. Keystone-2 Linux moves from 3.10 in MCSDK to 4.1 in ProcSDK 2.0.

SRIO is supported in Kernel only, not yet in U-boot. SRIO U-boot support is targeted in Proc SDK 3.0.0.

Rex

0 Charles Coldwell over 9 years ago

Intellectual 420 points

I recently discovered that the git repos for the new Processor SDK stuff are elsewhere:

U-Boot: git://git.ti.com/ti-u-boot/ti-u-boot.git

Linux: git://git.ti.com/processor-sdk/processor-sdk-linux.git

and you will also need the boot monitor

0 Charles Coldwell over 9 years ago in reply to Charles Coldwell

Intellectual 420 points

boot monitor is at git://git.ti.com/processor-firmware/ks2-boot-monitor.git

0 Sivanantham S over 9 years ago in reply to Charles Coldwell

Intellectual 840 points

Hi Rex,
Thanks for information. I have downloaded latest ProcSDK 2.0.2 for K2H from software-dl.ti.com/.../index_FDS.html.

1. In this prcessor SDK, i was trying to build u-boot .It was compiling but not working when it gets loaded (No print statements in uart console).

The following steps i have performed for compilation
PATH=$PATH:/home/crypto/Desktop/gcc-linaro-4.9-2015.02-3-x86_64_arm-linux-gnueabihf/bin
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
make distclean
make k2hk_evm_defconfig
make all
#Creation of uart loadable uboot Image
dd if=/dev/zero of=4k_zeros bs=4096 count=1
cat 4k_zeros u-boot.bin > u-boot.uart

then loaded thro XMODEM mode (in teraterm).

Even i have tried u-boot.bin thro CCS that also didnt work.

FYI, The above said procedures work well for K2_UBOOT_2013_01_15.07_01 tagged u-boot

Since point 1 did not work so i was not able to proceed further.

2.In latest linux(4.1.x) in proc SDK 2.0.2.11 srio driver supports rionet?if not what kind of support it provides such as memory mapping thro ATMU?

3.Will it have real time feature since i am seeing only one source code. earlier seperate code was maintained.

Kindly clarify my doubts.

Regards,
Sivanantham

0 Rex Chang over 9 years ago in reply to Sivanantham S

TI__Guru 50170 points

Hi, Sivanantham,

ProcSDK has different u-boot architecture so booting through UART, the preceding 4k zeros are not needed. Please try transfering only the u-boot.bin through XMODEM.

SRIO is not supported in ProcSDK 2.0.2, and if my info is correct, it will be in ProcSDK 3.0.

In ProcSDK release, 3 OS's are included, the Linux, the RT-Linux, and RTOS. You can download the RT-Linux in the release package.

Rex

0 Titusrathinaraj Stalin over 9 years ago in reply to Sivanantham S

TI__Guru** 116100 points

Dear Sivanantham,
Yes, I'm able to do UART boot with the u-boot.bin from the latest processor SDK.

Thanks Rex.

0 Sivanantham S over 9 years ago in reply to Titusrathinaraj Stalin

Intellectual 840 points

Thanks for the help.

U-boot loading thro UART is working.

0 Titusrathinaraj Stalin over 9 years ago in reply to Sivanantham S

TI__Guru** 116100 points

Sounds good.
Thanks for the update.

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Regarding U-boot and Linux source code