Download kernel source

[juranga]

Hi,

I have downloaded the last kernel version from https://github.com/raspberrypi/linux , I have compiled and I try to run my raspberry pi 2 with this kernel, but it doesn´t boot. I suposse that my raspberry needs another kernel version (a previous one)...

I would like to download another version, (4.1.7-v7+) is this possible? And where can I download it?


Many thanks in advance.

[DougieLawson]

Get a copy of rpi-source, it can download any version as long as you know the git commit id for it.

You really do not want to revert to a 4.1.xx kernel, that won't boot with the current bootcode.bin GPU blob.

[juranga]

Many thanks for your answer DougieLawson.

I have found your post explaining how install kernel source so I will try using it.

All the kernel commit IDs come from here: https://github.com/Hexxeh/rpi-firmware/commits/master

Current is: b8f4cb56a12ddeb047172ca9f99c7ea401dd5f50 for 4.1.15+ & 4.1.15-v7+

Looks like 7ee23ac1452ad57dcc0ef2c1f074060b4bd9338d should match the version in stock Raspbian Jessie as shipped with apt-get.

If you want an easy way to download the source install rpi-source with: sudo wget https://raw.githubusercontent.com/notro ... rpi-source -O /usr/bin/rpi-source && sudo chmod +x /usr/bin/rpi-source && /usr/bin/rpi-source -q --tag-update

I do not have much experience with kernel stuff and I haven´t understood the last sentence.

Get a copy of rpi-source, it can download any version as long as you know the git commit id for it.

You really do not want to revert to a 4.1.xx kernel, that won't boot with the current bootcode.bin GPU blob.

[DougieLawson]

The boot sequence is chip ROM boots bootcode.bin on the GPU, bootcode.bin reads config.txt, gets the GPU running then boots kernel.img (or kernel7.img) on the ARM processor.

Bootcode.bin is closed source (proprietary stuff belonging to Broadcom), so for all practical purposes that's just a binary large object (blob) of code that we can't inspect.

[juranga]

The boot sequence is chip ROM boots bootcode.bin on the GPU, bootcode.bin reads config.txt, gets the GPU running then boots kernel.img (or kernel7.img) on the ARM processor.

Bootcode.bin is closed source (proprietary stuff belonging to Broadcom), so for all practical purposes that's just a binary large object (blob) of code that we can't inspect.

Many thanks for the explanation


I have tried downloading the kernel source and I have had some problems.

I did:
git clone --depth=1 https://github.com/raspberrypi/linux
git show-ref //there are only the last three versions

I checked at git the ID of kernel 4.1.7-v7+ (https://github.com/Hexxeh/rpi-firmware/ ... 3e99fbf9a7)
ID:6ade0bac40feeaaaf8ef20eb6b90843e99fbf9a7

sudo git checkout 6ade0bac40feeaaaf8ef20eb6b90843e99fbf9a7
fatal: reference is not a tree: 6ade0bac40feeaaaf8ef20eb6b90843e99fbf9a7


Moreover, I have tried with:

sudo wget https://raw.githubusercontent.com/notro ... rpi-source -O /usr/bin/rpi-source && sudo chmod +x /usr/bin/rpi-source && /usr/bin/rpi-source -q --tag-update

But it gives me some gcc version error. I have 4.9.2-10

[DougieLawson]

Use a flag --skip-gcc to avoid that silly GCC version warning.

[juranga]

Many many thanks for your help DougieLawson!

I have achieve downloading the kernel source .tar.gz file but there is some problem unpacking it...

pi@raspberrypi ~/try-kernel $ sudo /usr/bin/rpi-source --skip-gcc
*** Using: /usr/share/doc/raspberrypi-bootloader/changelog.Debian.gz

*** Latest firmware revision: 960832a6c2590635216c296b6ee0bebf67b21d50

*** Linux source commit: 59e76bb7e2936acd74938bb385f0884e34b91d72

*** Download kernel source: Already downloaded /root/linux-59e76bb7e2936acd74938bb385f0884e34b91d72.tar.gz

*** Unpack kernel source
..........................................................................................................................................................................................................................................................................................................................................................................................
gzip: stdin: unexpected end of file
tar: Fin de fichero inesperado en el archivo
tar: Fin de fichero inesperado en el archivo
tar: Error is not recoverable: exiting now
Traceback (most recent call last):
File "/usr/bin/rpi-source", line 345, in <module>
sh("cd %s && tar --checkpoint=100 --checkpoint-action=dot -xzf %s" % (args.dest, linux_tar))
File "/usr/bin/rpi-source", line 85, in sh
subprocess.check_call(cmd, shell=True)
File "/usr/lib/python2.7/subprocess.py", line 540, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command 'cd /root && tar --checkpoint=100 --checkpoint-action=dot -xzf /root/linux-59e76bb7e2936acd74938bb385f0884e34b91d72.tar.gz' returned non-zero exit status 2

[DougieLawson]

Looks like you've had a network failure during the download and got half a file.

[juranga]

You were right!

[sarusukh]

Can you please tell me step by step procedure of how to download kernel source?

[6by9]

Can you please tell me step by step procedure of how to download kernel source?

https://www.raspberrypi.org/documentati ... uilding.md

[sarusukh]

I am really struggling with installing linux tool "perf"; (I'm using raspberry pi zero)
My issue is as follows:

When i try to install perf using the following command, it says that its already installed.

sudo apt-get install linux-perf
linux-perf is already the newest version (4.9+80+deb9u4+rpi2).
linux-perf-4.9 set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.


but when i try to run that command, it gives the error as mentioned below:
perf
/usr/bin/perf: line 13: exec: perf_4.19: not found
E: linux-perf-4.19 is not installed.

[jamesh]

I am really struggling with installing linux tool "perf"; (I'm using raspberry pi zero)
My issue is as follows:

When i try to install perf using the following command, it says that its already installed.

sudo apt-get install linux-perf
linux-perf is already the newest version (4.9+80+deb9u4+rpi2).
linux-perf-4.9 set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.


but when i try to run that command, it gives the error as mentioned below:
perf
/usr/bin/perf: line 13: exec: perf_4.19: not found
E: linux-perf-4.19 is not installed.

Please start a new thread with more details on what you are trying to do.