As part of the startup process for boards using the SPL, we need to
call spl_relocate_stack_gd. This is needed to set up malloc with its
DRAM buffer.

Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
Reviewed-by: Andre Przywara <andre.przyw...@arm.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---
 arch/arm/lib/crt0_64.S | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S
index 19c6a98..a7cead5 100644
--- a/arch/arm/lib/crt0_64.S
+++ b/arch/arm/lib/crt0_64.S
@@ -109,8 +109,17 @@ relocation_return:
  */
        bl      c_runtime_cpu_setup             /* still call old routine */
 #endif /* !CONFIG_SPL_BUILD */
-
-/* TODO: For SPL, call spl_relocate_stack_gd() to alloc stack relocation */
+#if defined(CONFIG_SPL_BUILD)
+       bl      spl_relocate_stack_gd           /* may return NULL */
+       /* Perform 'sp = (x0 != NULL) ? x0 : sp' while working
+        * around the constraint that conditional moves can not
+        * have 'sp' as an operand
+        */
+       mov     x1, sp
+       cmp     x0, #0
+       csel    x0, x0, x1, ne
+       mov     sp, x0
+#endif
 
 /*
  * Clear BSS section
-- 
1.9.1

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