[U-Boot] [PATCH] ARM: fix arch/arm/Makefile for Tegra

[Masahiro Yamada]

Since commit 79d75d752717 (ARM: move -march=* and -mtune= options to
arch/arm/Makefile), all the Tegra boards are broken because the SPL
is built for ARMv7.

Insert Tegra-specific code to arch/arm/Makefile to set compiler
flags for an earlier ARM architecture.

Note:
The patch for commit 79d75d752717 *was* correct when it was posted.
Notice it was written for multi .config configuration where Kconfig
set CONFIG_CPU_V7/CONFIG_CPU_ARM720T for Tegra U-Boot Main/SPL,
respectively.  But, it look long until that patch was merged into
the mainline, and finally, it was overtaken by commit e02ee2548afe
(kconfig: switch to single .config configuration).

Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
Reported-by: Stephen Warren <swarren at nvidia.com>
Reported-by: Jan Kiszka <jan.kiszka at web.de>
---

I just did build test for all the Tegra boards.

Stephen,
Could you do run-test?

Tom,
Please hold back the v2015.04 release until we confim
this problem is fixed.


 arch/arm/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 6463c19..bd4749c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -2,6 +2,11 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
+ifeq ($(CONFIG_SPL_BUILD)$(CONFIG_TEGRA),yy)
+CONFIG_CPU_V7=
+CONFIG_CPU_ARM720T=y
+endif
+
 # This selects which instruction set is used.
 arch-$(CONFIG_CPU_ARM720T)	=-march=armv4
 arch-$(CONFIG_CPU_ARM920T)	=-march=armv4
-- 
1.9.1