On 03/14/2018 06:11 AM, Peter Geis wrote:
Good Morning,
Thank you, this is definitely part of my problem.
Is there a way, or should there be a way to denote this via the device
tree, instead of patching the kernel to accept a command line function?
(Forgive me if this is a stupid question, this is my first true foray
into kernel development)
I am not aware of any way to represent storage device partition layout
in device tree (although for raw MTD devices I think there is a way).
It would be possible in theory to develop such a feature, but since the
current firmware on the device doesn't support it, and hence there's no
good way to get the information into the DT, I don't expect doing so
would solve any problems here.
On 03/13/2018 04:58 PM, Dmitry Osipenko wrote:
On 13.03.2018 22:24, Stephen Warren wrote:
On 03/13/2018 01:15 PM, Dmitry Osipenko wrote:
On 13.03.2018 21:08, Peter Geis wrote:
Good Afternoon,
I have successfully booted 4.14 and 4.16 on the Ouya, with L2 cache
support.
Awesome :)
I am having three major hangups right now.
I can't seem to find a valid frambuffer driver for the fbconsole.
Please show the dmesg log, it should contain some errors. Add
drm.debug=0xe to
the kernels cmdline.
The old kernel eEMMC support seems to be a hack job.
Most likely eMMC has a custom downstream partitioning that is not
supported by
upstream. You should be able to specify partitions manually using
CONFIG_CMDLINE_PARTITION, though I never used it myself. If that's
your problem
with eMMC.
Yes, older Android devices tended to use a "TegraPT" (Tegra Partition
Table)
format rather than GPT. They also tend to consider the eMMC boot0,
boot1, and
user HW partitions as a single logical device that gets partitioned
by TegraPT,
rather than as completely separate devices. At least that's true for the
flashing utilties; I can't remember whether TegraPT only exists
within the user
HW partition or not. The best reference for this is one of the NVIDIA
downstream
kernels (such as the original Ouya kernel source).
Or if bootloader passes something like "gpt gpt_sector=61079551" in
cmdline,
then apply this patch [0] and it should just work (if eMMC HW is up
and running
fine).
[0]
https://github.com/digetx/picasso_upstream_support/commit/9ced0e6b27545953bd68b9b042d221c6faade203
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