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authorHongbo Zhang <hongbo.zhang@nxp.com>2016-07-21 18:09:38 +0800
committerYork Sun <york.sun@nxp.com>2016-07-26 09:02:49 -0700
commitaeb901f2a6c19e399354345ad1acd67420401a10 (patch)
tree0162707ee59907b7d1d133545cb8d293a7dab453 /board/freescale/ls1021aqds
parent7e742c276dea455d9439caa3f6bc3f4e9a1b5796 (diff)
ARMv7: PSCI: ls102xa: add more PSCI v1.0 functions implemention
This patch implements PSCI functions for ls102xa SoC following PSCI v1.0, they are as the list: psci_version, psci_features, psci_cpu_suspend, psci_affinity_info, psci_system_reset, psci_system_off. Tested on LS1021aQDS, LS1021aTWR. Signed-off-by: Wang Dongsheng <dongsheng.wang@nxp.com> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'board/freescale/ls1021aqds')
-rw-r--r--board/freescale/ls1021aqds/Makefile1
-rw-r--r--board/freescale/ls1021aqds/psci.S33
2 files changed, 34 insertions, 0 deletions
diff --git a/board/freescale/ls1021aqds/Makefile b/board/freescale/ls1021aqds/Makefile
index ab0234412c..f0390c129f 100644
--- a/board/freescale/ls1021aqds/Makefile
+++ b/board/freescale/ls1021aqds/Makefile
@@ -8,3 +8,4 @@ obj-y += ls1021aqds.o
obj-y += ddr.o
obj-y += eth.o
obj-$(CONFIG_FSL_DCU_FB) += dcu.o
+obj-$(CONFIG_ARMV7_PSCI) += psci.o
diff --git a/board/freescale/ls1021aqds/psci.S b/board/freescale/ls1021aqds/psci.S
new file mode 100644
index 0000000000..598168c7b0
--- /dev/null
+++ b/board/freescale/ls1021aqds/psci.S
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2016 NXP Semiconductor.
+ * Author: Wang Dongsheng <dongsheng.wang@freescale.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+#include <asm/armv7.h>
+#include <asm/psci.h>
+
+ .pushsection ._secure.text, "ax"
+
+ .arch_extension sec
+
+ .align 5
+
+.globl psci_system_off
+psci_system_off:
+ @ Get QIXIS base address
+ movw r1, #(QIXIS_BASE & 0xffff)
+ movt r1, #(QIXIS_BASE >> 16)
+
+ ldrb r2, [r1, #QIXIS_PWR_CTL]
+ orr r2, r2, #QIXIS_PWR_CTL_POWEROFF
+ strb r2, [r1, #QIXIS_PWR_CTL]
+
+1: wfi
+ b 1b
+
+ .popsection