[U-Boot] [PATCH] arm: initialize gd for AArch64

[Stephen Warren]

From: Stephen Warren <swarren at nvidia.com>

Commit adc421e4cee8 "arm: move gd handling outside of C code" removed
the call to arch_setup_gd() on ARM and replaced it with assembly code
in crt0.S. However, AArch64 uses a different startup file, and the same
change was not made to it. This leaves gd uninitialized on AArch64, which
typically leads to hangs or crashes. This change fixes that.

Fixes: adc421e4cee8 ("arm: move gd handling outside of C code")
Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
 arch/arm/lib/crt0_64.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S
index b4fc76060970..cad22c7b41fe 100644
--- a/arch/arm/lib/crt0_64.S
+++ b/arch/arm/lib/crt0_64.S
@@ -78,6 +78,8 @@ ENTRY(_main)
 	mov	x0, sp
 	bl	board_init_f_alloc_reserve
 	mov	sp, x0
+	/* set up gd here, outside any C code */
+	mov	x18, x0
 	bl	board_init_f_init_reserve
 
 	mov	x0, #0
-- 
2.7.0