On 02/12/2018 10:44 AM, Peter Zijlstra wrote:
> On Mon, Feb 12, 2018 at 10:18:06AM -0500, Prarit Bhargava wrote:
>>> But when I specify "earlyprintk=serial,ttyS0,115200" this SPCR crud will
>>> not interfere?
>>>
>>
>> I tested "earlyprintk=serial,ttyS0,115200" on a system which is known to
>> h
On Mon, Feb 12, 2018 at 10:18:06AM -0500, Prarit Bhargava wrote:
> > But when I specify "earlyprintk=serial,ttyS0,115200" this SPCR crud will
> > not interfere?
> >
>
> I tested "earlyprintk=serial,ttyS0,115200" on a system which is known to have
> a
> functional console with "console=ttyS0,1152
On 02/12/2018 09:56 AM, Peter Zijlstra wrote:
> On Mon, Feb 12, 2018 at 08:47:57AM -0500, Prarit Bhargava wrote:
>>
>>
>> On 02/12/2018 08:34 AM, Peter Zijlstra wrote:
>>> On Thu, Jan 18, 2018 at 10:09:51AM -0500, Prarit Bhargava wrote:
config ACPI_SPCR_TABLE
+ bool "ACPI Serial Port
On 2/12/18 8:49 AM, Prarit Bhargava wrote:
That's true on ARM64. I specifically did not enable the console by default on
x86. There are users who do not want a console active during boot & runtime.
H... That's a good point. On ARM systems with SPCR, you get a
console whether you like it
On Mon, Feb 12, 2018 at 08:47:57AM -0500, Prarit Bhargava wrote:
>
>
> On 02/12/2018 08:34 AM, Peter Zijlstra wrote:
> > On Thu, Jan 18, 2018 at 10:09:51AM -0500, Prarit Bhargava wrote:
> >> config ACPI_SPCR_TABLE
> >> + bool "ACPI Serial Port Console Redirection Support"
> >> + default y if X
On 02/12/2018 09:43 AM, Timur Tabi wrote:
> On 2/12/18 7:47 AM, Prarit Bhargava wrote:
>> ACPI SPCR is used by a vendor to define the serial console for a system. If
>> SPCR exists a user can add kernel parameter "earlycon" (no extra kernel
>> parameters) and the console will work out-of-the-box
On 2/12/18 7:47 AM, Prarit Bhargava wrote:
ACPI SPCR is used by a vendor to define the serial console for a system. If
SPCR exists a user can add kernel parameter "earlycon" (no extra kernel
parameters) and the console will work out-of-the-box.
"earlycon" is needed only for an *early* console.
On 02/12/2018 08:34 AM, Peter Zijlstra wrote:
> On Thu, Jan 18, 2018 at 10:09:51AM -0500, Prarit Bhargava wrote:
>> config ACPI_SPCR_TABLE
>> +bool "ACPI Serial Port Console Redirection Support"
>> +default y if X86
>> +help
>> + Enable support for Serial Port Console Redirectio
On Thu, Jan 18, 2018 at 10:09:51AM -0500, Prarit Bhargava wrote:
> config ACPI_SPCR_TABLE
> + bool "ACPI Serial Port Console Redirection Support"
> + default y if X86
> + help
> + Enable support for Serial Port Console Redirection (SPCR) Table.
> + This table provides infor
On 01/22/2018 04:49 PM, Timur Tabi wrote:
> On 01/18/2018 09:09 AM, Prarit Bhargava wrote:
>> if (acpi_disabled) {
>> -if (earlycon_init_is_deferred)
>> +if (earlycon_acpi_spcr_enable)
>
> This patch works for me, so I can ACK it, but first you might want to rename
> earlyc
On 01/18/2018 09:09 AM, Prarit Bhargava wrote:
if (acpi_disabled) {
- if (earlycon_init_is_deferred)
+ if (earlycon_acpi_spcr_enable)
This patch works for me, so I can ACK it, but first you might want to
rename earlycon_acpi_spcr_enable, because these two li
On Thu, 2018-01-18 at 10:09 -0500, Prarit Bhargava wrote:
> Note on testing: I've tested this on several ARM64 and x86 boxes (only
> earlycon, console=ttyS0,115200, and with both options), verified that
> functionality on ARM64 has not changed (ie, CONFIG_ACPI_SPCR_TABLE is
> always =y), and verif
* Prarit Bhargava wrote:
> Note on testing: I've tested this on several ARM64 and x86 boxes (only
> earlycon, console=ttyS0,115200, and with both options), verified that
> functionality on ARM64 has not changed (ie, CONFIG_ACPI_SPCR_TABLE is
> always =y), and verified functionality when !CONFIG
Note on testing: I've tested this on several ARM64 and x86 boxes (only
earlycon, console=ttyS0,115200, and with both options), verified that
functionality on ARM64 has not changed (ie, CONFIG_ACPI_SPCR_TABLE is
always =y), and verified functionality when !CONFIG_ACPI_SPCR_TABLE on
x86.
P.
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