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From: Heinrich Schuchardt <xypron.glpk@gmx.de>
To: u-boot@lists.denx.de
Subject: [PATCH 1/1] arm: -march=armv5t for ARM11
Date: Sat,  7 Dec 2019 09:14:50 +0100	[thread overview]
Message-ID: <20191207081450.3888-1-xypron.glpk@gmx.de> (raw)

In GCC 9 support for the Armv5 and Armv5E architectures (which have no
known implementations) has been removed, cf.
https://gcc.gnu.org/gcc-9/changes.html

Commit 16540d07fd62 ("arm: fix -march for ARM11") changed the value of the
compiler flag from -march=armv5 and -march=armv5t into -march=armv6 for
ARM11.

The values prior to this patch were:

    arch-$(CONFIG_CPU_ARM1136)     =-march=armv5
    arch-$(CONFIG_CPU_ARM1176)     =-march=armv5t

The change lead to a regression with the Raspberry Pi Zero W not booting
anymore.

Use -march=armv5t both for ARM1136 and ARM1176.

Fixes: 16540d07fd62 ("arm: fix -march for ARM11")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
I do not possess an ARM1136 board for testing. It would be great, if
anybody could test on real hardware.
---
 arch/arm/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 60af7e3199..856f2d8608 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -12,8 +12,8 @@ arch-$(CONFIG_CPU_ARM926EJS)	=-march=armv5te
 arch-$(CONFIG_CPU_ARM946ES)	=-march=armv5te
 arch-$(CONFIG_CPU_SA1100)	=-march=armv4
 arch-$(CONFIG_CPU_PXA)		=
-arch-$(CONFIG_CPU_ARM1136)	=-march=armv6
-arch-$(CONFIG_CPU_ARM1176)	=-march=armv6
+arch-$(CONFIG_CPU_ARM1136)	=-march=armv5t
+arch-$(CONFIG_CPU_ARM1176)	=-march=armv5t
 arch-$(CONFIG_CPU_V7A)		=$(call cc-option, -march=armv7-a, \
 				 $(call cc-option, -march=armv7))
 arch-$(CONFIG_CPU_V7M)		=-march=armv7-m
--
2.24.0

             reply	other threads:[~2019-12-07  8:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-07  8:14 Heinrich Schuchardt [this message]
2019-12-07 11:16 ` [PATCH 1/1] arm: -march=armv5t for ARM11 Joris Offouga
2019-12-09 18:48 ` Tom Rini

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