From: Marek Behún <marek.behun@nic.cz>
Date: Thu, 20 May 2021 11:24:09 +0000 (+0200)
Subject: ARM: global_data: make set_gd() work for armv5 and armv6
X-Git-Tag: v2021.10~172^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=82b63e95410ebca0bbfd343ce163299a44a2d932;p=platform%2Fkernel%2Fu-boot.git

ARM: global_data: make set_gd() work for armv5 and armv6

The Thumb instruction `ldr` is able to move high registers only from
armv7. For armv5 and armv6 we have to use `mov`.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/arm/include/asm/global_data.h b/arch/arm/include/asm/global_data.h
index fba655f..bb82efa 100644
--- a/arch/arm/include/asm/global_data.h
+++ b/arch/arm/include/asm/global_data.h
@@ -122,8 +122,10 @@ static inline void set_gd(volatile gd_t *gd_ptr)
 {
 #ifdef CONFIG_ARM64
 	__asm__ volatile("ldr x18, %0\n" : : "m"(gd_ptr));
-#else
+#elif __ARM_ARCH >= 7
 	__asm__ volatile("ldr r9, %0\n" : : "m"(gd_ptr));
+#else
+	__asm__ volatile("mov r9, %0\n" : : "r"(gd_ptr));
 #endif
 }