linux-kernel - [PATCH 3/3] powerpc: Allow CPU selection of e300core variants

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Date:   Thu,  7 Jun 2018 10:10:22 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 3/3] powerpc: Allow CPU selection of e300core variants

GCC supports -mcpu=e300c2 and -mcpu=e300c3

This patch gives the opportunity to tune kernel to one of
those two types.

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 arch/powerpc/platforms/Kconfig.cputype | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index ed7c6edec87e..d174acb41389 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -145,6 +145,14 @@ config 860_CPU
 	bool "8xx family"
 	depends on PPC_8xx
 
+config E300C2_CPU
+	bool "e300c2 (832x)"
+	depends on PPC_BOOK3S_32
+
+config E300C3_CPU
+	bool "e300c3 (831x)"
+	depends on PPC_BOOK3S_32
+
 endchoice
 
 config SPECIAL_CPU_BOOL
@@ -161,6 +169,8 @@ config SPECIAL_CPU
 	default "power8" if POWER8_CPU
 	default "power9" if POWER9_CPU
 	default "860" if 860_CPU
+	default "e300c2" if E300C2_CPU
+	default "e300c3" if E300C3_CPU
 
 config PPC_BOOK3S
 	def_bool y
-- 
2.13.3