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From: Christophe Leroy <>
To: Michael Ellerman <>,
	Nicholas Piggin <>
Cc: "Christophe Leroy" <>,,,, "Pali Rohár" <>
Subject: [PATCH 2/2] powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage
Date: Wed, 25 Jan 2023 08:39:00 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

From: Pali Rohár <>

When CONFIG_TARGET_CPU is specified then pass its value to the compiler
-mcpu option. This fixes following build error when building kernel with
powerpc e500 SPE capable cross compilers:

    BOOTAS  arch/powerpc/boot/crt0.o
  powerpc-linux-gnuspe-gcc: error: unrecognized argument in option ‘-mcpu=powerpc’
  powerpc-linux-gnuspe-gcc: note: valid arguments to ‘-mcpu=’ are: 8540 8548 native
  make[1]: *** [arch/powerpc/boot/Makefile:231: arch/powerpc/boot/crt0.o] Error 1

Similar change was already introduced for the main powerpc Makefile in
commit 446cda1b21d9 ("powerpc/32: Don't always pass -mcpu=powerpc to the

Fixes: 40a75584e526 ("powerpc/boot: Build wrapper for an appropriate CPU")
Cc: # 446cda1b21d9 ("powerpc/32: Don't always pass -mcpu=powerpc to the compiler")
Signed-off-by: Pali Rohár <>
Signed-off-by: Christophe Leroy <>
 arch/powerpc/boot/Makefile | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d32d95aea5d6..295f76df13b5 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -39,13 +39,19 @@ BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-BOOTCFLAGS	+= -m64 -mcpu=powerpc64le
-BOOTCFLAGS	+= -m64 -mcpu=powerpc64
+BOOTCFLAGS	+= -mcpu=powerpc64le
-BOOTCFLAGS	+= -m32 -mcpu=powerpc
+BOOTCFLAGS	+= -mcpu=powerpc64
 BOOTCFLAGS	+= -isystem $(shell $(BOOTCC) -print-file-name=include)

           reply	other threads:[~2023-01-25  7:39 UTC|newest]

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