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NeddySeagoon
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PostPosted: Sun Apr 15, 2018 3:14 pm    Post subject: Raspberry Pi 3B 64 bit Kernel Reply with quote

Team,

I've been using the Raspberry Pi github sources for the rpi-4.10.y for a long time. It supports all the hardware, so there was no real reason to move on.
The Foundation kernel has moved to 4.14, so I thought I should keep up and build 4.14.33-v8+, which is the current rpi-4.14.y version.

I've been following the wiki page just with bcmrpi3_defconfig and made lots of kernels that don't work.
I'm using the bfd linker from binutils-2.29.1 and I've tried both gcc:6.4.0 and gcc:7.3.0.
I've compiled natively and cross and I get the same results all the time. A blank screen.

I've updated /boot too. The updated boot still works with the old kernel, so it has to be the kernel.
At boot, I get one long flash and one short one on the green LED and I briefly see the rainbow screen before it all goes dark.

Even if I wait for 5 minutes, I can't connect over ssh.

Does bcmrpi3_defconfig not boot or am I missing something obvious?

The next step is to find the serial cable ...

-- edit --

OK, it was a senior moment ...
Code:
# kernels ... choose 1 :)
# 4.9 seems to have broken sound.
#kernel=pi_4.9.53-v8+

#kernel=pi_4.10.17-v8+

#kernel=kernel-4.15.y
#kernel=skinny_4.10.y
kernel=rpi-4.14.y

I really needed to add the kernel= in front of my new kernel name. :(
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NeddySeagoon

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Sakaki
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Joined: 21 May 2014
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PostPosted: Sun Apr 15, 2018 5:10 pm    Post subject: Reply with quote

If it helps for sanity checking in future, I have a project on GitHub (here) that performs a weekly autobuild of the tip of the default branch (currently rpi-4.14.y, as you note) kernel from the official RPi tree, configured with a vanilla 64-bit bcmrpi3_defconfig, and creates a corresponding release tarball each time (containing kernel8.img, the dtbs, and the module set). (In case it is of interest to anyone also, ava1ar just added an Arch AUR package using this as upstream)

I've deployed 4.14 in the latest release of the gentoo-on-rpi3-64bit image, and so far it seems to be performing fine (VC4, sound, Bluetooth and networking are all supported without having to change the config).
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sakaki
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NeddySeagoon
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PostPosted: Sun Apr 15, 2018 6:13 pm    Post subject: Reply with quote

Sakaki,

Thanks.
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NeddySeagoon

Computer users fall into two groups:-
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