* AM335x, early printk
@ 2013-08-19 11:21 Sebastian Andrzej Siewior
2013-08-19 12:27 ` Jean Pihet
0 siblings, 1 reply; 6+ messages in thread
From: Sebastian Andrzej Siewior @ 2013-08-19 11:21 UTC (permalink / raw)
To: linux-omap@vger.kernel.org
Hi,
I activated:
[*] Kernel low-level debugging functions
Kernel low-level debugging port (Kernel low-level debugging
messages via OMAP2PLUS UART)
Low-level debug console UART (AM33XX UART1)
[*] Early printk
and booted my am335x-evm.
I haven't seen any "early" output in the decompressor or during the
kernel boot. I believe that all I saw is just regular ttyO0 output.
I saw also:
|44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88) is a OMAP UART0
|console [ttyO0] enabled
and I would also except the bootconsole (if any) to be deactivated here.
What am I missing?
Sebastian
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: AM335x, early printk
2013-08-19 11:21 AM335x, early printk Sebastian Andrzej Siewior
@ 2013-08-19 12:27 ` Jean Pihet
2013-08-19 12:37 ` Sebastian Andrzej Siewior
0 siblings, 1 reply; 6+ messages in thread
From: Jean Pihet @ 2013-08-19 12:27 UTC (permalink / raw)
To: Sebastian Andrzej Siewior; +Cc: linux-omap@vger.kernel.org
Hi!
You need to add 'earlyprintk' in the kernel command line, given (I
suppose) by U-Boot.
I hope this helps!
Jean
On Mon, Aug 19, 2013 at 1:21 PM, Sebastian Andrzej Siewior
<bigeasy@linutronix.de> wrote:
> Hi,
>
> I activated:
> [*] Kernel low-level debugging functions
> Kernel low-level debugging port (Kernel low-level debugging
> messages via OMAP2PLUS UART)
> Low-level debug console UART (AM33XX UART1)
> [*] Early printk
>
> and booted my am335x-evm.
> I haven't seen any "early" output in the decompressor or during the
> kernel boot. I believe that all I saw is just regular ttyO0 output.
> I saw also:
> |44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88) is a OMAP UART0
> |console [ttyO0] enabled
> and I would also except the bootconsole (if any) to be deactivated here.
>
> What am I missing?
>
> Sebastian
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: AM335x, early printk
2013-08-19 12:27 ` Jean Pihet
@ 2013-08-19 12:37 ` Sebastian Andrzej Siewior
2013-08-20 5:56 ` Afzal Mohammed
2013-08-20 9:32 ` Lokesh Vutla
0 siblings, 2 replies; 6+ messages in thread
From: Sebastian Andrzej Siewior @ 2013-08-19 12:37 UTC (permalink / raw)
To: Jean Pihet; +Cc: linux-omap@vger.kernel.org
On 08/19/2013 02:27 PM, Jean Pihet wrote:
> Hi!
Hi Jean,
> You need to add 'earlyprintk' in the kernel command line, given (I
> suppose) by U-Boot.
Ah, good hint.
>
> I hope this helps!
Yes. I do not see the decompress messages but I have an early console
later on. Unfortunately it stops now right at the serial core:
|pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
|Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
>
> Jean
Sebastian
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: AM335x, early printk
2013-08-19 12:37 ` Sebastian Andrzej Siewior
@ 2013-08-20 5:56 ` Afzal Mohammed
2013-08-20 9:32 ` Lokesh Vutla
1 sibling, 0 replies; 6+ messages in thread
From: Afzal Mohammed @ 2013-08-20 5:56 UTC (permalink / raw)
To: Sebastian Andrzej Siewior; +Cc: Jean Pihet, linux-omap@vger.kernel.org
Hi Sebastian,
On Monday 19 August 2013 06:07 PM, Sebastian Andrzej Siewior wrote:
> Yes. I do not see the decompress messages but I have an early console
> later on. Unfortunately it stops now right at the serial core:
>
> |pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
> |Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
I vaguely remember facing a similar issue on it's yet to be born sibling
while trying to woke it up in the womb, see if placing dtb at a
different location helps (probably so that images won't get corrupted)
Regards
Afzal
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: AM335x, early printk
2013-08-19 12:37 ` Sebastian Andrzej Siewior
2013-08-20 5:56 ` Afzal Mohammed
@ 2013-08-20 9:32 ` Lokesh Vutla
2013-08-20 11:14 ` Afzal Mohammed
1 sibling, 1 reply; 6+ messages in thread
From: Lokesh Vutla @ 2013-08-20 9:32 UTC (permalink / raw)
To: Sebastian Andrzej Siewior
Cc: Jean Pihet, linux-omap@vger.kernel.org, Mohammed, Afzal
Hi Sebastian,
On Monday 19 August 2013 06:07 PM, Sebastian Andrzej Siewior wrote:
> On 08/19/2013 02:27 PM, Jean Pihet wrote:
>> Hi!
>
> Hi Jean,
>
>> You need to add 'earlyprintk' in the kernel command line, given (I
>> suppose) by U-Boot.
>
> Ah, good hint.
>
>>
>> I hope this helps!
>
> Yes. I do not see the decompress messages but I have an early console
> later on. Unfortunately it stops now right at the serial core:
>
> |pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
> |Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
I guess you are missing the following series from Rajendra.
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg92515.html
Thanks and regards,
Lokesh
>
>>
>> Jean
>
> Sebastian
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-08-20 11:14 UTC | newest]
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2013-08-19 11:21 AM335x, early printk Sebastian Andrzej Siewior
2013-08-19 12:27 ` Jean Pihet
2013-08-19 12:37 ` Sebastian Andrzej Siewior
2013-08-20 5:56 ` Afzal Mohammed
2013-08-20 9:32 ` Lokesh Vutla
2013-08-20 11:14 ` Afzal Mohammed
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