BBB with v5.7-rc5

BBB with v5.7-rc5

[Felipe Balbi]

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Hi guys,

what's the trick to get BBB to boot recent kernels nowadays? :-p

I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
root=/dev/mmcblk0p1 rootwait console=ttyS0,115200n8 (also tried ttyO0)

I get nothing on serial console. Has anyone tried a recent kernel on
BBB?

Cheers

-- 
balbi

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Re: BBB with v5.7-rc5

[Felipe Balbi]

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Hi,

Felipe Balbi <balbi@kernel.org> writes:
> what's the trick to get BBB to boot recent kernels nowadays? :-p
>
> I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
> GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual

same result with 9.2. Nothing from low level debug either.

-- 
balbi

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Re: BBB with v5.7-rc5

[Dan Murphy]

Felipe

On 5/12/20 8:46 AM, Tony Lindgren wrote:
> Hi,
>
> * Felipe Balbi <balbi@kernel.org> [200512 13:41]:
>> Hi,
>>
>> Felipe Balbi <balbi@kernel.org> writes:
>>> what's the trick to get BBB to boot recent kernels nowadays? :-p
>>>
>>> I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
>>> GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
>> same result with 9.2. Nothing from low level debug either.
> Maybe check you have a current dtb file? The older dtb files may not
> have all the needed data.

I have been using the latest uBoot, DTBs and kernel with no issue 
(except CPSW).

I have booted the BBB and a BBG.  9.2 gcc compiler

> Also you probably want to add "earlycon" to your your kernel cmdline
> and then you have early output from CONFIG_SERIAL_EARLYCON=y as long
> as there's a chosen entry for the device uart. So no need to enable
> DEBUG_LL in most cases.
>
> There's "[PATCH net v4] net: ethernet: ti: Remove TI_CPTS_MOD workaround"
> being discussed too for the cpsw regression.

This is a build dependency issue.

Dan

> Regards,
>
> Tony
>
>
>

Re: BBB with v5.7-rc5

[Tony Lindgren]

Hi,

* Felipe Balbi <balbi@kernel.org> [200512 13:41]:
> Hi,
> 
> Felipe Balbi <balbi@kernel.org> writes:
> > what's the trick to get BBB to boot recent kernels nowadays? :-p
> >
> > I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
> > GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
> 
> same result with 9.2. Nothing from low level debug either.

Maybe check you have a current dtb file? The older dtb files may not
have all the needed data.

Also you probably want to add "earlycon" to your your kernel cmdline
and then you have early output from CONFIG_SERIAL_EARLYCON=y as long
as there's a chosen entry for the device uart. So no need to enable
DEBUG_LL in most cases.

There's "[PATCH net v4] net: ethernet: ti: Remove TI_CPTS_MOD workaround"
being discussed too for the cpsw regression.

Regards,

Tony

Re: BBB with v5.7-rc5

[Felipe Balbi]

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Hi Dan,

Dan Murphy <dmurphy@ti.com> writes:
>>> Felipe Balbi <balbi@kernel.org> writes:
>>>> what's the trick to get BBB to boot recent kernels nowadays? :-p
>>>>
>>>> I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
>>>> GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
>>> same result with 9.2. Nothing from low level debug either.
>> Maybe check you have a current dtb file? The older dtb files may not
>> have all the needed data.
>
> I have been using the latest uBoot, DTBs and kernel with no issue 
> (except CPSW).
>
> I have booted the BBB and a BBG.  9.2 gcc compiler

I'll give it a shot. Maybe it's something silly I did along the way ;-)

It's been a few years since I touched ARM :-)

-- 
balbi

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Re: BBB with v5.7-rc5

[Felipe Balbi]

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Hi,

Tony Lindgren <tony@atomide.com> writes:
>> Felipe Balbi <balbi@kernel.org> writes:
>> > what's the trick to get BBB to boot recent kernels nowadays? :-p
>> >
>> > I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
>> > GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
>> 
>> same result with 9.2. Nothing from low level debug either.
>
> Maybe check you have a current dtb file? The older dtb files may not
> have all the needed data.

yeah, loading all the data from sd card. I am, however, using the u-boot
that came with the board.

> Also you probably want to add "earlycon" to your your kernel cmdline
> and then you have early output from CONFIG_SERIAL_EARLYCON=y as long
> as there's a chosen entry for the device uart. So no need to enable
> DEBUG_LL in most cases.

cool, I'll try earlycon, then.

> There's "[PATCH net v4] net: ethernet: ti: Remove TI_CPTS_MOD workaround"
> being discussed too for the cpsw regression.

Thanks

-- 
balbi

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Re: BBB with v5.7-rc5

[Felipe Balbi]

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Hi,

Felipe Balbi <balbi@kernel.org> writes:
> Tony Lindgren <tony@atomide.com> writes:
>>> Felipe Balbi <balbi@kernel.org> writes:
>>> > what's the trick to get BBB to boot recent kernels nowadays? :-p
>>> >
>>> > I'm using omap2plus_defconfig without CPSW (doesn't link otherwise) with
>>> > GCC 10.1.0 (I'll try an older version shortly). Cmdline is the usual
>>> 
>>> same result with 9.2. Nothing from low level debug either.
>>
>> Maybe check you have a current dtb file? The older dtb files may not
>> have all the needed data.
>
> yeah, loading all the data from sd card. I am, however, using the u-boot
> that came with the board.

All sorted out, thanks for the tips ;-)

-- 
balbi

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