linux-kernel - [PATCH] powerpc: Allow CPU selection of G4/74xx variant

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Message-Id: <20190114201304.10783-1-malat@debian.org>
Date:   Mon, 14 Jan 2019 21:13:04 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc: Allow CPU selection of G4/74xx variant

GCC supports -mcpu=G4

This patch gives the opportunity to select ALTIVEC for this variant.

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
 arch/powerpc/platforms/Kconfig.cputype | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 8c7464c3f27f..7c544607ba32 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -153,6 +153,11 @@ config E300C3_CPU
 	bool "e300c3 (831x)"
 	depends on PPC_BOOK3S_32
 
+config G4_CPU
+	bool "G4 (74xx)"
+	depends on PPC_BOOK3S_32
+	select ALTIVEC
+
 endchoice
 
 config TARGET_CPU_BOOL
@@ -171,6 +176,7 @@ config TARGET_CPU
 	default "860" if 860_CPU
 	default "e300c2" if E300C2_CPU
 	default "e300c3" if E300C3_CPU
+	default "G4" if G4_CPU
 
 config PPC_BOOK3S
 	def_bool y
-- 
2.19.2