[U-Boot] [PATCH 1/7] armv8: fsl-layerscape: Put SMMU config code in SMMU_BASE

Prabhakar Kushwaha prabhakar.kushwaha at nxp.com
Wed May 4 16:13:57 CEST 2016


It is not mandatory for Layerscape SoCs to have SMMU. SoCs like
LS1012A are layerscape SoC without SMMU IP.

So put SMMU configuration code under SMMU_BASE.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha at nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
index 04831ca..d743ffe 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
+++ b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
@@ -94,11 +94,13 @@ ENTRY(lowlevel_init)
 	bl	ccn504_set_qos
 #endif
 
+#ifdef SMMU_BASE
 	/* Set the SMMU page size in the sACR register */
 	ldr	x1, =SMMU_BASE
 	ldr	w0, [x1, #0x10]
 	orr	w0, w0, #1 << 16  /* set sACR.pagesize to indicate 64K page */
 	str	w0, [x1, #0x10]
+#endif
 
 	/* Initialize GIC Secure Bank Status */
 #if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
-- 
1.9.1




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