[U-Boot] [PATCH 1/1] arm: armv7: enable unaligned access

[Heinrich Schuchardt]

We use the command bootefi to run UEFI executables like GRUB and iPXE.
The UEFI spec requires that unaligned access is enabled if the CPU
supports it. This is true for armv7.

So we should not set bit 1 of the system control register, the alignment
bit.

Without this patch iPXE snp.efi cannot be executed on the Allwinner A20.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 arch/arm/cpu/armv7/start.S | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 7e2695761e..1771741119 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -150,7 +150,6 @@ ENTRY(cpu_init_cp15)
 	mrc	p15, 0, r0, c1, c0, 0
 	bic	r0, r0, #0x00002000	@ clear bits 13 (--V-)
 	bic	r0, r0, #0x00000007	@ clear bits 2:0 (-CAM)
-	orr	r0, r0, #0x00000002	@ set bit 1 (--A-) Align
 	orr	r0, r0, #0x00000800	@ set bit 11 (Z---) BTB
 #ifdef CONFIG_SYS_ICACHE_OFF
 	bic	r0, r0, #0x00001000	@ clear bit 12 (I) I-cache
-- 
2.11.0