linux-kernel - Re: [PATCH v3 05/17] arm: Convert to GENERIC

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Message-ID: <c18ef8f7-8e79-a9d3-3853-f8b992a4fc93@csgroup.eu>
Date:   Fri, 26 Mar 2021 16:49:58 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Rob Herring <robh@...nel.org>
Cc:     Will Deacon <will@...nel.org>, Daniel Walker <danielwa@...co.com>,
        Daniel Gimpelevich <daniel@...pelevich.san-francisco.ca.us>,
        "open list:GENERIC INCLUDE/ASM HEADER FILES" 
        <linux-arch@...r.kernel.org>, devicetree@...r.kernel.org,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        microblaze <monstr@...str.eu>,
        "open list:MIPS" <linux-mips@...r.kernel.org>,
        nios2 <ley.foon.tan@...el.com>,
        Openrisc <openrisc@...ts.librecores.org>,
        linux-hexagon@...r.kernel.org,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        X86 ML <x86@...nel.org>, linux-xtensa@...ux-xtensa.org,
        SH-Linux <linux-sh@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>
Subject: Re: [PATCH v3 05/17] arm: Convert to GENERIC_CMDLINE



Le 26/03/2021 à 16:47, Rob Herring a écrit :
> On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
> <christophe.leroy@...roup.eu> wrote:
>>
>> This converts the architecture to GENERIC_CMDLINE.
>>
>> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
>> ---
>>   arch/arm/Kconfig              | 38 +----------------------------------
>>   arch/arm/kernel/atags_parse.c | 15 +++++---------
>>   2 files changed, 6 insertions(+), 47 deletions(-)
>>
>> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>> index 5da96f5df48f..67bc75f2da81 100644
>> --- a/arch/arm/Kconfig
>> +++ b/arch/arm/Kconfig
>> @@ -50,6 +50,7 @@ config ARM
>>          select GENERIC_ARCH_TOPOLOGY if ARM_CPU_TOPOLOGY
>>          select GENERIC_ATOMIC64 if CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI
>>          select GENERIC_CLOCKEVENTS_BROADCAST if SMP
>> +       select GENERIC_CMDLINE if ATAGS
> 
> Don't we need this enabled for !ATAGS (i.e. DT boot)?
> 
> Can we always enable GENERIC_CMDLINE for OF_EARLY_FLATTREE?
> 

Don't know.

Today ARM has:

choice
	prompt "Kernel command line type" if CMDLINE != ""
	default CMDLINE_FROM_BOOTLOADER
	depends on ATAGS



Christophe