From: peter@hurleysoftware•com (Peter Hurley)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 6/7] ACPI: enable ACPI_DBG2_TABLE on ARM64
Date: Tue, 1 Mar 2016 09:25:34 -0800 [thread overview]
Message-ID: <56D5D08E.3030902@hurleysoftware.com> (raw)
In-Reply-To: <56D5CB42.3030806@linaro.org>
On 03/01/2016 09:02 AM, Aleksey Makarov wrote:
>
>
> On 03/01/2016 05:52 PM, Peter Hurley wrote:
>> On 02/29/2016 04:42 AM, Aleksey Makarov wrote:
>>> SBBR mentions DBG2 as a mandatory ACPI table.
>>> So enable it for ARM64
>>
>> Why does this have to be opted-in per-arch?
>
> DBG2 can specify earlycons. They should start as soon as possible.
> On ARM64 it is just after boot tables become available (in arch_init()).
> So it has to be per-arch unless we decide not to start earlycons on
> DBG2 ports.
OF does all that already but the earlycon opt-in is not per-arch.
>>> Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro•org>
>>> ---
>>> arch/arm64/Kconfig | 1 +
>>> arch/arm64/kernel/acpi.c | 2 ++
>>> 2 files changed, 3 insertions(+)
>>>
>>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>>> index 9dc5209..0b614d4 100644
>>> --- a/arch/arm64/Kconfig
>>> +++ b/arch/arm64/Kconfig
>>> @@ -3,6 +3,7 @@ config ARM64
>>> select ACPI_CCA_REQUIRED if ACPI
>>> select ACPI_GENERIC_GSI if ACPI
>>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>>> + select ACPI_DBG2_TABLE if ACPI
>>> select ARCH_HAS_DEVMEM_IS_ALLOWED
>>> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
>>> select ARCH_HAS_ELF_RANDOMIZE
>>> diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
>>> index d1ce8e2..3370046 100644
>>> --- a/arch/arm64/kernel/acpi.c
>>> +++ b/arch/arm64/kernel/acpi.c
>>> @@ -208,6 +208,8 @@ void __init acpi_boot_table_init(void)
>>> pr_err("Failed to init ACPI tables\n");
>>> if (!param_acpi_force)
>>> disable_acpi();
>>> + } else {
>>> + acpi_probe_device_table(dbg2);
>>> }
>>> }
>>>
>>>
>>
next prev parent reply other threads:[~2016-03-01 17:25 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-29 12:41 [PATCH v3 0/7] ACPI: parse the DBG2 table Aleksey Makarov
2016-02-29 12:41 ` [PATCH v3 1/7] of/serial: move earlycon early_param handling to serial Aleksey Makarov
2016-03-01 14:50 ` Peter Hurley
2016-03-01 16:31 ` Aleksey Makarov
2016-03-01 17:24 ` Peter Hurley
2016-03-01 17:52 ` Aleksey Makarov
2016-03-01 18:26 ` Peter Hurley
2016-02-29 12:41 ` [PATCH v3 2/7] ACPI: add definitions of DBG2 subtypes Aleksey Makarov
2016-02-29 12:42 ` [PATCH v3 3/7] ACPI: genaralize iterating over subtables in ACPI_PROBE_TABLE() Aleksey Makarov
2016-02-29 12:42 ` [PATCH v3 4/7] ACPI: parse DBG2 table Aleksey Makarov
2016-03-01 14:49 ` Peter Hurley
2016-03-01 16:24 ` Aleksey Makarov
2016-03-01 17:22 ` Peter Hurley
2016-03-01 18:19 ` Aleksey Makarov
2016-03-03 16:40 ` Peter Hurley
2016-03-04 12:19 ` Aleksey Makarov
2016-03-04 17:39 ` Peter Hurley
2016-02-29 12:42 ` [PATCH v3 5/7] ACPI: serial: implement earlycon on ACPI DBG2 port Aleksey Makarov
2016-03-01 15:53 ` Peter Hurley
2016-03-01 16:57 ` Aleksey Makarov
2016-03-03 17:48 ` Peter Hurley
2016-03-03 19:33 ` Peter Hurley
2016-03-04 13:03 ` Aleksey Makarov
2016-03-04 15:40 ` Peter Hurley
2016-03-04 15:52 ` Peter Hurley
2016-02-29 12:42 ` [PATCH v3 6/7] ACPI: enable ACPI_DBG2_TABLE on ARM64 Aleksey Makarov
2016-03-01 14:52 ` Peter Hurley
2016-03-01 17:02 ` Aleksey Makarov
2016-03-01 17:25 ` Peter Hurley [this message]
2016-03-03 11:41 ` Aleksey Makarov
2016-03-03 15:51 ` Peter Hurley
2016-02-29 12:42 ` [PATCH v3 7/7] serial: pl011: add ACPI DBG2 serial port Aleksey Makarov
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