From: Nicholas Piggin <npiggin@gmail.com>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 1/3] powerpc: make CPU selection logic generic in Makefile
Date: Fri, 8 Jun 2018 11:54:29 +1000 [thread overview]
Message-ID: <20180608115429.50c8d578@roar.ozlabs.ibm.com> (raw)
In-Reply-To: <273f8ed3e980b9385c6e1b31e17f890ea08ce33c.1528365638.git.christophe.leroy@c-s.fr>
On Thu, 7 Jun 2018 10:10:18 +0000 (UTC)
Christophe Leroy <christophe.leroy@c-s.fr> wrote:
> At the time being, when adding a new CPU for selection, both
> Kconfig.cputype and Makefile have to be modified.
>
> This patch moves into Kconfig.cputype the name of the CPU to me
> passed to the -mcpu= argument.
Seems like a good cleanup.
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
>
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
> arch/powerpc/Makefile | 8 +-------
> arch/powerpc/platforms/Kconfig.cputype | 15 +++++++++++++++
> 2 files changed, 16 insertions(+), 7 deletions(-)
>
> diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
> index 9704ab360d39..9a5642552abc 100644
> --- a/arch/powerpc/Makefile
> +++ b/arch/powerpc/Makefile
> @@ -175,13 +175,7 @@ ifdef CONFIG_MPROFILE_KERNEL
> endif
> endif
>
> -CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
> -CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
> -CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
> -CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
> -CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8)
> -CFLAGS-$(CONFIG_POWER9_CPU) += $(call cc-option,-mcpu=power9)
> -CFLAGS-$(CONFIG_PPC_8xx) += $(call cc-option,-mcpu=860)
> +CFLAGS-$(CONFIG_SPECIAL_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_SPECIAL_CPU))
>
> # Altivec option not allowed with e500mc64 in GCC.
> ifeq ($(CONFIG_ALTIVEC),y)
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index cc892dcfa114..71ef559cc474 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -140,6 +140,21 @@ config E6500_CPU
>
> endchoice
>
> +config SPECIAL_CPU_BOOL
> + bool
> + default !GENERIC_CPU
> +
> +config SPECIAL_CPU
> + string
> + depends on SPECIAL_CPU_BOOL
> + default "cell" if CELL_CPU
> + default "power5" if POWER5_CPU
> + default "power6" if POWER6_CPU
> + default "power7" if POWER7_CPU
> + default "power8" if POWER8_CPU
> + default "power9" if POWER9_CPU
> + default "860" if PPC_8xx
> +
> config PPC_BOOK3S
> def_bool y
> depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
next prev parent reply other threads:[~2018-06-08 1:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-07 10:10 [PATCH 1/3] powerpc: make CPU selection logic generic in Makefile Christophe Leroy
2018-06-07 10:10 ` [PATCH 2/3] powerpc: Allow CPU selection also on PPC32 Christophe Leroy
2018-06-07 10:10 ` [PATCH 3/3] powerpc: Allow CPU selection of e300core variants Christophe Leroy
2018-06-08 1:54 ` Nicholas Piggin [this message]
2018-08-07 7:18 ` [PATCH 1/3] powerpc: make CPU selection logic generic in Makefile Michael Ellerman
2018-08-08 14:25 ` [1/3] " Michael Ellerman
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