linux-kernel - [PATCH v1 3/5] powerpc/405: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')

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Message-Id: <d344a42c99061cfe10a28e00de4e31a1363f4251.1657549153.git.christophe.leroy@csgroup.eu>
Date:   Mon, 11 Jul 2022 16:19:31 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 3/5] powerpc/405: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')

Building ppc40x_defconfig leads to following error

  CC      arch/powerpc/kernel/process.o
{standard input}: Assembler messages:
{standard input}:626: Error: unrecognized opcode: `wrteei'

Add -mcpu=405 by default.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/platforms/Kconfig.cputype | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index bfea5d8452f8..e14000557ebd 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -137,7 +137,7 @@ config GENERIC_CPU
 
 config POWERPC_CPU
 	bool "Generic 32 bits powerpc"
-	depends on PPC32 && !PPC_8xx && !PPC_85xx
+	depends on PPC32 && !PPC_8xx && !PPC_85xx && !40x
 
 config CELL_CPU
 	bool "Cell Broadband Engine"
@@ -179,6 +179,10 @@ config E6500_CPU
 	bool "Freescale e6500"
 	depends on PPC64 && E500
 
+config 405_CPU
+	bool "40x family"
+	depends on 40x
+
 config 860_CPU
 	bool "8xx family"
 	depends on PPC_8xx
@@ -223,6 +227,7 @@ config TARGET_CPU
 	default "power7" if POWER7_CPU
 	default "power8" if POWER8_CPU
 	default "power9" if POWER9_CPU
+	default "405" if 405_CPU
 	default "860" if 860_CPU
 	default "e300c2" if E300C2_CPU
 	default "e300c3" if E300C3_CPU
-- 
2.36.1