[U-Boot] [PATCH v2 4/8] arm: Switch aarch64 to using generic global_data setup

Simon Glass
2015-08-28T20:50:24Z

There is quite a bit of assembler code that can be removed if we use the
generic global_data setup. Less arch-specific code makes it easier to add
new features and maintain the start-up code.

Drop the unneeded code and adjust the hooks in board_f.c to cope.

Tested on LS2085ARDB and LS2085AQDS (armv8 SoC).
Tested-by: York Sun <yorksun@freescale.com>

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v2: None

arch/arm/lib/crt0_64.S | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S
index 98a906e..31fc3b4 100644
--- a/arch/arm/lib/crt0_64.S
+++ b/arch/arm/lib/crt0_64.S
@@ -66,19 +66,10 @@ ENTRY(_main)
#else
ldr x0, =(CONFIG_SYS_INIT_SP_ADDR)
#endif
- sub x18, x0, #GD_SIZE /* allocate one GD above SP */
- bic x18, x18, #0x7 /* 8-byte alignment for GD */
-zero_gd:
- sub x0, x0, #0x8
- str xzr, [x0]
- cmp x0, x18
- b.gt zero_gd
-#if defined(CONFIG_SYS_MALLOC_F_LEN)
- ldr x0, =CONFIG_SYS_MALLOC_F_LEN
- sub x0, x18, x0
- str x0, [x18, #GD_MALLOC_BASE]
-#endif
bic sp, x0, #0xf /* 16-byte alignment for ABI compliance */
+ bl board_init_f_mem
+ mov sp, x0
+
mov x0, #0
bl board_init_f

--
2.5.0.457.gab17608