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From: Andre Przywara <andre.przywara@arm.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 01/17] armv8: spl: Call spl_relocate_stack_gd for ARMv8
Date: Wed,  1 Mar 2017 02:25:13 +0000	[thread overview]
Message-ID: <1488335129-12363-2-git-send-email-andre.przywara@arm.com> (raw)
In-Reply-To: <1488335129-12363-1-git-send-email-andre.przywara@arm.com>

From: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

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.
[Andre: fix comment]

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arch/arm/lib/crt0_64.S | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S
index 19c6a98..e59fd3e 100644
--- a/arch/arm/lib/crt0_64.S
+++ b/arch/arm/lib/crt0_64.S
@@ -109,8 +109,18 @@ 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 most arm64 instructions cannot
+	 * have 'sp' as an operand.
+	 */
+	mov	x1, sp
+	cmp	x0, #0
+	csel	x0, x0, x1, ne
+	mov	sp, x0
+#endif
 
 /*
  * Clear BSS section
-- 
2.8.2

  reply	other threads:[~2017-03-01  2:25 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-01  2:25 [U-Boot] [PATCH 00/17] SPL: extend FIT loading support Andre Przywara
2017-03-01  2:25 ` Andre Przywara [this message]
2017-03-01  2:25 ` [U-Boot] [PATCH 02/17] SPL: FIT: refactor FDT loading Andre Przywara
2017-03-03  4:53   ` Simon Glass
2017-03-03 11:09     ` Andre Przywara
2017-03-08 21:01       ` Simon Glass
2017-03-14 10:52   ` Lokesh Vutla
2017-03-01  2:25 ` [U-Boot] [PATCH 03/17] SPL: FIT: rework U-Boot image loading Andre Przywara
2017-03-03  4:53   ` Simon Glass
2017-03-14 10:53   ` Lokesh Vutla
2017-03-01  2:25 ` [U-Boot] [PATCH 04/17] SPL: FIT: factor out spl_load_fit_image() Andre Przywara
2017-03-03 16:56   ` Andrew F. Davis
2017-03-03 19:03     ` Franklin S Cooper Jr
2017-03-08 21:00   ` Simon Glass
2017-03-14 10:53   ` Lokesh Vutla
2017-03-01  2:25 ` [U-Boot] [PATCH 05/17] SPL: FIT: allow loading multiple images Andre Przywara
2017-03-08 21:00   ` Simon Glass
2017-03-27  1:19     ` André Przywara
2017-04-01  4:22       ` Simon Glass
2017-03-14 10:53   ` Lokesh Vutla
2017-03-01  2:25 ` [U-Boot] [PATCH 06/17] tools: mksunxiboot: allow larger SPL binaries Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-29 14:43   ` [U-Boot] [linux-sunxi] " Olliver Schinagl
2017-03-29 14:54     ` Andre Przywara
2017-03-01  2:25 ` [U-Boot] [PATCH 07/17] armv8: SPL: only compile GIC code if needed Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 08/17] armv8: fsl: move ccn504 code into FSL Makefile Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-27  1:18     ` André Przywara
2017-03-01  2:25 ` [U-Boot] [PATCH 09/17] sunxi: A64: move SPL stack to end of SRAM A2 Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 10/17] sunxi: SPL: store RAM size in gd Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 11/17] sunxi: SPL: add FIT config selector for Pine64 boards Andre Przywara
2017-03-01  3:03   ` [U-Boot] [linux-sunxi] " Icenowy Zheng
2017-03-03  0:47     ` André Przywara
2017-03-08 21:01   ` [U-Boot] " Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 12/17] Makefile: add rules to generate SPL FIT images Andre Przywara
2017-03-03 16:58   ` Andrew F. Davis
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 13/17] sunxi: A64: Pine64: introduce FIT generator script Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 14/17] sunxi: Pine64: defconfig: enable SPL FIT support Andre Przywara
2017-03-01 15:51   ` Maxime Ripard
2017-03-01  2:25 ` [U-Boot] [PATCH 15/17] sunxi: OrangePi-PC2: " Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 16/17] sunxi: Store the device tree name in the SPL header Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-27  1:18     ` André Przywara
2017-04-01  4:22       ` Simon Glass
2017-03-01  2:25 ` [U-Boot] [PATCH 17/17] sunxi: use SPL header DT name for FIT board matching Andre Przywara
2017-03-08 21:01   ` Simon Glass
2017-03-06 11:24 ` [U-Boot] [PATCH 00/17] SPL: extend FIT loading support Kever Yang
2017-03-14 11:03 ` Dr. Philipp Tomsich

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