[U-Boot] [PATCH v3 0/5] Add ARMv8 PSCI framework

[U-Boot] [PATCH v3 0/5] Add ARMv8 PSCI framework

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

v2-v3 changes:
 - Drop the previous 1/6, since the previous CONFIG_ARMV8_PSCI in common parts
of codes also work for generic PSCI framework, so there are 5 patches in this
iteration.
 - Add "Reviewed-by: Tom Rini <trini@konsulko.com>" for patches 1/5 and 2/5,
which were 2/6 and 3/6.
 - Move config values for ls1043 from armv8/Kconfig to s1043ardb_defconfig.

v1-v2 changes:
 - The new config options are introduced in Kconfig when used for first time
 - Introduce new config options in armv8/Kconfig instead of LS1043 platform
 - Move previous patch 5/6 to current 2/6 place

v1 notes:

This patch set introduces ARMv8 PSCI framework, all the PSCI functions are
implemented a default dummy one, it is up to each platform to implement their
own specific ones.

The first 1/6 patch is a prepare clean up for adding ARMv8 PSCI.
Patches 2/6 to 5/6 introduce new ARMv8 framework and set it up.
The last 6/6 adds a most simple implementation on NXP LS1043 platform, to
verify this framework.

This patch set mainly introduces ARMv8 PSCI framework, for easier review and
merge, further PSCI implementation on LS1043 is coming later.

Hongbo Zhang (5):
  ARMv8: Enable SMC instruction
  ARMv8: Add secure sections for PSCI text and data
  ARMv8: Add basic PSCI framework
  ARMv8: Setup PSCI memory and device tree
  ARMv8: LS1043A: Enable LS1043A default PSCI support

 arch/arm/config.mk                               |   3 +-
 arch/arm/cpu/armv8/Kconfig                       |  41 ++++
 arch/arm/cpu/armv8/Makefile                      |   1 +
 arch/arm/cpu/armv8/cpu-dt.c                      |   8 +
 arch/arm/cpu/armv8/cpu.c                         |  22 ++
 arch/arm/cpu/armv8/fsl-layerscape/Makefile       |   1 +
 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S |  20 ++
 arch/arm/cpu/armv8/psci.S                        | 286 +++++++++++++++++++++++
 arch/arm/cpu/armv8/u-boot.lds                    |  57 +++++
 arch/arm/include/asm/macro.h                     |   2 +-
 arch/arm/include/asm/psci.h                      |  15 ++
 arch/arm/include/asm/secure.h                    |   2 +-
 arch/arm/include/asm/system.h                    |  11 +
 arch/arm/lib/bootm.c                             |   3 +
 arch/arm/lib/psci-dt.c                           |   2 +-
 board/freescale/ls1043ardb/Kconfig               |   9 +
 configs/ls1043ardb_defconfig                     |   3 +
 17 files changed, 482 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
 create mode 100644 arch/arm/cpu/armv8/psci.S

-- 
2.1.4

[U-Boot] [PATCH v3 1/5] ARMv8: Enable SMC instruction

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

PSCI implementation needs the SMC instruction to be enabled.
Following the legacy codes pattern, no bit macro definition and bit operation
are used, only the immediate data used in line is changed.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 arch/arm/include/asm/macro.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h
index 9bb0efa..35ea002 100644
--- a/arch/arm/include/asm/macro.h
+++ b/arch/arm/include/asm/macro.h
@@ -137,7 +137,7 @@ lr	.req	x30
 
 .macro armv8_switch_to_el2_m, xreg1
 	/* 64bit EL2 | HCE | SMD | RES1 (Bits[5:4]) | Non-secure EL0/EL1 */
-	mov	\xreg1, #0x5b1
+	mov	\xreg1, #0x531
 	msr	scr_el3, \xreg1
 	msr	cptr_el3, xzr		/* Disable coprocessor traps to EL3 */
 	mov	\xreg1, #0x33ff
-- 
2.1.4

[U-Boot] [PATCH v3 2/5] ARMv8: Add secure sections for PSCI text and data

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

This patch adds secure_text, secure_data and secure_stack sections for ARMv8 to
hold PSCI text and data, and it is based on the legacy implementation of ARMv7.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 arch/arm/config.mk            |  3 ++-
 arch/arm/cpu/armv8/Kconfig    | 31 +++++++++++++++++++++++
 arch/arm/cpu/armv8/u-boot.lds | 57 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+), 1 deletion(-)

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 542b897..112e334 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -118,7 +118,8 @@ endif
 
 # limit ourselves to the sections we want in the .bin.
 ifdef CONFIG_ARM64
-OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
+OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
+		-j .u_boot_list -j .rela.dyn
 else
 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
 		-j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig
index cd2d9bb..f2a43b8 100644
--- a/arch/arm/cpu/armv8/Kconfig
+++ b/arch/arm/cpu/armv8/Kconfig
@@ -39,4 +39,35 @@ config PSCI_RESET
 
 	  Select Y here to make use of PSCI calls for system reset
 
+config ARMV8_PSCI
+	bool "Enable PSCI support" if EXPERT
+	default n
+	help
+	  PSCI is Power State Coordination Interface defined by ARM.
+	  The PSCI in U-boot provides a general framework and each platform
+	  can implement their own specific PSCI functions.
+	  Say Y here to enable PSCI support on ARMv8 platform.
+
+config ARMV8_PSCI_NR_CPUS
+	int "Maximum supported CPUs for PSCI"
+	depends on ARMV8_PSCI
+	default 4
+	help
+	  The maximum number of CPUs supported in the PSCI firmware.
+	  It is no problem to set a larger value than the number of CPUs in
+	  the actual hardware implementation.
+
+if SYS_HAS_ARMV8_SECURE_BASE
+
+config ARMV8_SECURE_BASE
+	hex "Secure address for PSCI image"
+	depends on ARMV8_PSCI
+	help
+	  Address for placing the PSCI text, data and stack sections.
+	  If not defined, the PSCI sections are placed together with the u-boot
+	  but platform can choose to place PSCI code image separately in other
+	  places such as some secure RAM built-in SOC etc.
+
+endif
+
 endif
diff --git a/arch/arm/cpu/armv8/u-boot.lds b/arch/arm/cpu/armv8/u-boot.lds
index fd15ad5..22195b8 100644
--- a/arch/arm/cpu/armv8/u-boot.lds
+++ b/arch/arm/cpu/armv8/u-boot.lds
@@ -8,11 +8,17 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#include <config.h>
+#include <asm/psci.h>
+
 OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
 OUTPUT_ARCH(aarch64)
 ENTRY(_start)
 SECTIONS
 {
+#ifdef CONFIG_ARMV8_SECURE_BASE
+	/DISCARD/ : { *(.rela._secure*) }
+#endif
 	. = 0x00000000;
 
 	. = ALIGN(8);
@@ -23,6 +29,57 @@ SECTIONS
 		*(.text*)
 	}
 
+#ifdef CONFIG_ARMV8_PSCI
+	.__secure_start :
+#ifndef CONFIG_ARMV8_SECURE_BASE
+		ALIGN(CONSTANT(COMMONPAGESIZE))
+#endif
+	{
+		KEEP(*(.__secure_start))
+	}
+
+#ifndef CONFIG_ARMV8_SECURE_BASE
+#define CONFIG_ARMV8_SECURE_BASE
+#define __ARMV8_PSCI_STACK_IN_RAM
+#endif
+	.secure_text CONFIG_ARMV8_SECURE_BASE :
+		AT(ADDR(.__secure_start) + SIZEOF(.__secure_start))
+	{
+		*(._secure.text)
+	}
+
+	.secure_data : AT(LOADADDR(.secure_text) + SIZEOF(.secure_text))
+	{
+		*(._secure.data)
+	}
+
+	.secure_stack ALIGN(ADDR(.secure_data) + SIZEOF(.secure_data),
+			    CONSTANT(COMMONPAGESIZE)) (NOLOAD) :
+#ifdef __ARMV8_PSCI_STACK_IN_RAM
+		AT(ADDR(.secure_stack))
+#else
+		AT(LOADADDR(.secure_data) + SIZEOF(.secure_data))
+#endif
+	{
+		KEEP(*(.__secure_stack_start))
+
+		. = . + CONFIG_ARMV8_PSCI_NR_CPUS * ARM_PSCI_STACK_SIZE;
+
+		. = ALIGN(CONSTANT(COMMONPAGESIZE));
+
+		KEEP(*(.__secure_stack_end))
+	}
+
+#ifndef __ARMV8_PSCI_STACK_IN_RAM
+	. = LOADADDR(.secure_stack);
+#endif
+
+	.__secure_end : AT(ADDR(.__secure_end)) {
+		KEEP(*(.__secure_end))
+		LONG(0x1d1071c);	/* Must output something to reset LMA */
+	}
+#endif
+
 	. = ALIGN(8);
 	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
-- 
2.1.4

[U-Boot] [PATCH v3 3/5] ARMv8: Add basic PSCI framework

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

This patch introduces a generic ARMv8 PSCI framework, with all functions
returning a dummy ARM_PSCI_RET_NI (Not Implemented), then it is up to each
platform to implement their own functions based on this framework.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
---
 arch/arm/cpu/armv8/Kconfig  |  10 ++
 arch/arm/cpu/armv8/Makefile |   1 +
 arch/arm/cpu/armv8/psci.S   | 286 ++++++++++++++++++++++++++++++++++++++++++++
 arch/arm/include/asm/psci.h |  15 +++
 4 files changed, 312 insertions(+)
 create mode 100644 arch/arm/cpu/armv8/psci.S

diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig
index f2a43b8..173950d 100644
--- a/arch/arm/cpu/armv8/Kconfig
+++ b/arch/arm/cpu/armv8/Kconfig
@@ -57,6 +57,16 @@ config ARMV8_PSCI_NR_CPUS
 	  It is no problem to set a larger value than the number of CPUs in
 	  the actual hardware implementation.
 
+config ARMV8_PSCI_CPUS_PER_CLUSTER
+	int "Number of CPUs per cluster"
+	depends on ARMV8_PSCI
+	default 0
+	help
+	  The number of CPUs per cluster, suppose each cluster has same number
+	  of CPU cores, platforms with asymmetric clusters don't apply here.
+	  A value 0 or no definition of it works for single cluster system.
+	  System with multi-cluster should difine their own exact value.
+
 if SYS_HAS_ARMV8_SECURE_BASE
 
 config ARMV8_SECURE_BASE
diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile
index dea1465..28ba786 100644
--- a/arch/arm/cpu/armv8/Makefile
+++ b/arch/arm/cpu/armv8/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_FSL_LAYERSCAPE) += fsl-layerscape/
 obj-$(CONFIG_S32V234) += s32v234/
 obj-$(CONFIG_ARCH_ZYNQMP) += zynqmp/
 obj-$(CONFIG_TARGET_HIKEY) += hisilicon/
+obj-$(CONFIG_ARMV8_PSCI) += psci.o
diff --git a/arch/arm/cpu/armv8/psci.S b/arch/arm/cpu/armv8/psci.S
new file mode 100644
index 0000000..43d5d6b
--- /dev/null
+++ b/arch/arm/cpu/armv8/psci.S
@@ -0,0 +1,286 @@
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/psci.h>
+
+/* Default PSCI function, return -1, Not Implemented */
+#define PSCI_DEFAULT(__fn) \
+	ENTRY(__fn); \
+	mov	w0, #ARM_PSCI_RET_NI; \
+	ret; \
+	ENDPROC(__fn); \
+	.weak __fn
+
+/* PSCI function and ID table definition*/
+#define PSCI_TABLE(__id, __fn) \
+	.word __id; \
+	.word __fn
+
+.pushsection ._secure.text, "ax"
+
+/* 32 bits PSCI default functions */
+PSCI_DEFAULT(psci_version)
+PSCI_DEFAULT(psci_cpu_suspend)
+PSCI_DEFAULT(psci_cpu_off)
+PSCI_DEFAULT(psci_cpu_on)
+PSCI_DEFAULT(psci_affinity_info)
+PSCI_DEFAULT(psci_migrate)
+PSCI_DEFAULT(psci_migrate_info_type)
+PSCI_DEFAULT(psci_migrate_info_up_cpu)
+PSCI_DEFAULT(psci_system_off)
+PSCI_DEFAULT(psci_system_reset)
+PSCI_DEFAULT(psci_features)
+PSCI_DEFAULT(psci_cpu_freeze)
+PSCI_DEFAULT(psci_cpu_default_suspend)
+PSCI_DEFAULT(psci_node_hw_state)
+PSCI_DEFAULT(psci_system_suspend)
+PSCI_DEFAULT(psci_set_suspend_mode)
+PSCI_DEFAULT(psi_stat_residency)
+PSCI_DEFAULT(psci_stat_count)
+
+.align 3
+_psci_32_table:
+PSCI_TABLE(ARM_PSCI_FN_CPU_SUSPEND, psci_cpu_suspend)
+PSCI_TABLE(ARM_PSCI_FN_CPU_OFF, psci_cpu_off)
+PSCI_TABLE(ARM_PSCI_FN_CPU_ON, psci_cpu_on)
+PSCI_TABLE(ARM_PSCI_FN_MIGRATE, psci_migrate)
+PSCI_TABLE(ARM_PSCI_0_2_FN_PSCI_VERSION, psci_version)
+PSCI_TABLE(ARM_PSCI_0_2_FN_CPU_SUSPEND, psci_cpu_suspend)
+PSCI_TABLE(ARM_PSCI_0_2_FN_CPU_OFF, psci_cpu_off)
+PSCI_TABLE(ARM_PSCI_0_2_FN_CPU_ON, psci_cpu_on)
+PSCI_TABLE(ARM_PSCI_0_2_FN_AFFINITY_INFO, psci_affinity_info)
+PSCI_TABLE(ARM_PSCI_0_2_FN_MIGRATE, psci_migrate)
+PSCI_TABLE(ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE, psci_migrate_info_type)
+PSCI_TABLE(ARM_PSCI_0_2_FN_MIGRATE_INFO_UP_CPU, psci_migrate_info_up_cpu)
+PSCI_TABLE(ARM_PSCI_0_2_FN_SYSTEM_OFF, psci_system_off)
+PSCI_TABLE(ARM_PSCI_0_2_FN_SYSTEM_RESET, psci_system_reset)
+PSCI_TABLE(ARM_PSCI_1_0_FN_PSCI_FEATURES, psci_features)
+PSCI_TABLE(ARM_PSCI_1_0_FN_CPU_FREEZE, psci_cpu_freeze)
+PSCI_TABLE(ARM_PSCI_1_0_FN_CPU_DEFAULT_SUSPEND, psci_cpu_default_suspend)
+PSCI_TABLE(ARM_PSCI_1_0_FN_NODE_HW_STATE, psci_node_hw_state)
+PSCI_TABLE(ARM_PSCI_1_0_FN_SYSTEM_SUSPEND, psci_system_suspend)
+PSCI_TABLE(ARM_PSCI_1_0_FN_SET_SUSPEND_MODE, psci_set_suspend_mode)
+PSCI_TABLE(ARM_PSCI_1_0_FN_STAT_RESIDENCY, psi_stat_residency)
+PSCI_TABLE(ARM_PSCI_1_0_FN_STAT_COUNT, psci_stat_count)
+PSCI_TABLE(0, 0)
+
+/* 64 bits PSCI default functions */
+PSCI_DEFAULT(psci_cpu_suspend_64)
+PSCI_DEFAULT(psci_cpu_on_64)
+PSCI_DEFAULT(psci_affinity_info_64)
+PSCI_DEFAULT(psci_migrate_64)
+PSCI_DEFAULT(psci_migrate_info_up_cpu_64)
+PSCI_DEFAULT(psci_cpu_default_suspend_64)
+PSCI_DEFAULT(psci_node_hw_state_64)
+PSCI_DEFAULT(psci_system_suspend_64)
+PSCI_DEFAULT(psci_stat_residency_64)
+PSCI_DEFAULT(psci_stat_count_64)
+
+.align 3
+_psci_64_table:
+PSCI_TABLE(ARM_PSCI_0_2_FN64_CPU_SUSPEND, psci_cpu_suspend_64)
+PSCI_TABLE(ARM_PSCI_0_2_FN64_CPU_ON, psci_cpu_on_64)
+PSCI_TABLE(ARM_PSCI_0_2_FN64_AFFINITY_INFO, psci_affinity_info_64)
+PSCI_TABLE(ARM_PSCI_0_2_FN64_MIGRATE, psci_migrate_64)
+PSCI_TABLE(ARM_PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU, psci_migrate_info_up_cpu_64)
+PSCI_TABLE(ARM_PSCI_1_0_FN64_CPU_DEFAULT_SUSPEND, psci_cpu_default_suspend_64)
+PSCI_TABLE(ARM_PSCI_1_0_FN64_NODE_HW_STATE, psci_node_hw_state_64)
+PSCI_TABLE(ARM_PSCI_1_0_FN64_SYSTEM_SUSPEND, psci_system_suspend_64)
+PSCI_TABLE(ARM_PSCI_1_0_FN64_STAT_RESIDENCY, psci_stat_residency_64)
+PSCI_TABLE(ARM_PSCI_1_0_FN64_STAT_COUNT, psci_stat_count_64)
+PSCI_TABLE(0, 0)
+
+.macro	psci_enter
+	/* PSCI call is Fast Call(atomic), so mask DAIF */
+	mrs	x15, DAIF
+	stp	x15, xzr, [sp, #-16]!
+	ldr	x15, =0x3C0
+	msr	DAIF, x15
+	/* SMC convention, x18 ~ x30 should be saved by callee */
+	stp	x29, x30, [sp, #-16]!
+	stp	x27, x28, [sp, #-16]!
+	stp	x25, x26, [sp, #-16]!
+	stp	x23, x24, [sp, #-16]!
+	stp	x21, x22, [sp, #-16]!
+	stp	x19, x20, [sp, #-16]!
+	mrs	x15, elr_el3
+	stp	x18, x15, [sp, #-16]!
+.endm
+
+.macro	psci_return
+	/* restore registers */
+	ldp	x18, x15, [sp], #16
+	msr	elr_el3, x15
+	ldp	x19, x20, [sp], #16
+	ldp	x21, x22, [sp], #16
+	ldp	x23, x24, [sp], #16
+	ldp	x25, x26, [sp], #16
+	ldp	x27, x28, [sp], #16
+	ldp	x29, x30, [sp], #16
+	/* restore DAIF */
+	ldp	x15, xzr, [sp], #16
+	msr	DAIF, x15
+	eret
+.endm
+
+/* Caller must put PSCI function-ID table base in x9 */
+handle_psci:
+	psci_enter
+1:	ldr x10, [x9]			/* Load PSCI function table */
+	ubfx x11, x10, #32, #32
+	ubfx x10, x10, #0, #32
+	cbz	x10, 3f			/* If reach the end, bail out */
+	cmp	x10, x0
+	b.eq	2f			/* PSCI function found */
+	add x9, x9, #8			/* If not match, try next entry */
+	b	1b
+
+2:	blr	x11			/* Call PSCI function */
+	psci_return
+
+3:	mov	x0, #ARM_PSCI_RET_NI
+	psci_return
+
+unknown_smc_id:
+	ldr	x0, =0xFFFFFFFF
+	eret
+
+handle_smc32:
+	/* SMC function ID  0x84000000-0x8400001F: 32 bits PSCI */
+	ldr	w9, =0x8400001F
+	cmp	w0, w9
+	b.gt	unknown_smc_id
+	ldr	w9, =0x84000000
+	cmp	w0, w9
+	b.lt	unknown_smc_id
+
+	adr	x9, _psci_32_table
+	b	handle_psci
+
+handle_smc64:
+	/* check SMC32 or SMC64 calls */
+	ubfx	x9, x0, #30, #1
+	cbz	x9, handle_smc32
+
+	/* SMC function ID 0xC4000000-0xC400001F: 64 bits PSCI */
+	ldr	x9, =0xC400001F
+	cmp	x0, x9
+	b.gt	unknown_smc_id
+	ldr	x9, =0xC4000000
+	cmp	x0, x9
+	b.lt	unknown_smc_id
+
+	adr	x9, _psci_64_table
+	b	handle_psci
+
+/*
+ * Get CPU ID from MPIDR, suppose every cluster has same number of CPU cores,
+ * Platform with asymmetric clusters should implement their own interface.
+ * In case this function being called by other platform's C code, the ARM
+ * Architecture Procedure Call Standard is considered, e.g. register X0 is
+ * used for the return value, while in this PSCI environment, X0 usually holds
+ * the SMC function identifier, so X0 should be saved by caller function.
+ */
+ENTRY(psci_get_cpu_id)
+#ifdef CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER
+	mrs	x9, MPIDR_EL1
+	ubfx	x9, x9, #8, #8
+	ldr	x10, =CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER
+	mul	x9, x10, x9
+#else
+	mov	x9, xzr
+#endif
+	mrs	x10, MPIDR_EL1
+	ubfx	x10, x10, #0, #8
+	add	x0, x10, x9
+	ret
+ENDPROC(psci_get_cpu_id)
+.weak psci_get_cpu_id
+
+/* CPU ID input in x0, stack top output in x0*/
+LENTRY(psci_get_cpu_stack_top)
+	adr	x9, __secure_stack_end
+	lsl	x0, x0, #ARM_PSCI_STACK_SHIFT
+	sub	x0, x9, x0
+	ret
+ENDPROC(psci_get_cpu_stack_top)
+
+unhandled_exception:
+	b	unhandled_exception	/* simply dead loop */
+
+handle_sync:
+	mov	x15, x30
+	mov	x14, x0
+
+	bl	psci_get_cpu_id
+	bl	psci_get_cpu_stack_top
+	mov	x9, #1
+	msr	spsel, x9
+	mov	sp, x0
+
+	mov	x0, x14
+	mov	x30, x15
+
+	mrs	x9, esr_el3
+	ubfx	x9, x9, #26, #6
+	cmp	x9, #0x13
+	b.eq	handle_smc32
+	cmp	x9, #0x17
+	b.eq	handle_smc64
+
+	b	unhandled_exception
+
+	.align	11
+	.globl	el3_exception_vectors
+el3_exception_vectors:
+	b	unhandled_exception	/* Sync, Current EL using SP0 */
+	.align	7
+	b	unhandled_exception	/* IRQ, Current EL using SP0 */
+	.align	7
+	b	unhandled_exception	/* FIQ, Current EL using SP0 */
+	.align	7
+	b	unhandled_exception	/* SError, Current EL using SP0 */
+	.align	7
+	b	unhandled_exception	/* Sync, Current EL using SPx */
+	.align	7
+	b	unhandled_exception	/* IRQ, Current EL using SPx */
+	.align	7
+	b	unhandled_exception	/* FIQ, Current EL using SPx */
+	.align	7
+	b	unhandled_exception	/* SError, Current EL using SPx */
+	.align	7
+	b	handle_sync		/* Sync, Lower EL using AArch64 */
+	.align	7
+	b	unhandled_exception	/* IRQ, Lower EL using AArch64 */
+	.align	7
+	b	unhandled_exception	/* FIQ, Lower EL using AArch64 */
+	.align	7
+	b	unhandled_exception	/* SError, Lower EL using AArch64 */
+	.align	7
+	b	unhandled_exception	/* Sync, Lower EL using AArch32 */
+	.align	7
+	b	unhandled_exception	/* IRQ, Lower EL using AArch32 */
+	.align	7
+	b	unhandled_exception	/* FIQ, Lower EL using AArch32 */
+	.align	7
+	b	unhandled_exception	/* SError, Lower EL using AArch32 */
+
+ENTRY(psci_setup_vectors)
+	adr	x0, el3_exception_vectors
+	msr	vbar_el3, x0
+	ret
+ENDPROC(psci_setup_vectors)
+
+ENTRY(psci_arch_init)
+	ret
+ENDPROC(psci_arch_init)
+.weak psci_arch_init
+
+.popsection
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
index 9f1f779..ac8b00d 100644
--- a/arch/arm/include/asm/psci.h
+++ b/arch/arm/include/asm/psci.h
@@ -45,6 +45,9 @@
 #define ARM_PSCI_0_2_FN_BASE			0x84000000
 #define ARM_PSCI_0_2_FN(n)			(ARM_PSCI_0_2_FN_BASE + (n))
 
+#define ARM_PSCI_0_2_FN64_BASE			0xC4000000
+#define ARM_PSCI_0_2_FN64(n)			(ARM_PSCI_0_2_FN64_BASE + (n))
+
 #define ARM_PSCI_0_2_FN_PSCI_VERSION		ARM_PSCI_0_2_FN(0)
 #define ARM_PSCI_0_2_FN_CPU_SUSPEND		ARM_PSCI_0_2_FN(1)
 #define ARM_PSCI_0_2_FN_CPU_OFF			ARM_PSCI_0_2_FN(2)
@@ -56,6 +59,12 @@
 #define ARM_PSCI_0_2_FN_SYSTEM_OFF		ARM_PSCI_0_2_FN(8)
 #define ARM_PSCI_0_2_FN_SYSTEM_RESET		ARM_PSCI_0_2_FN(9)
 
+#define ARM_PSCI_0_2_FN64_CPU_SUSPEND		ARM_PSCI_0_2_FN64(1)
+#define ARM_PSCI_0_2_FN64_CPU_ON		ARM_PSCI_0_2_FN64(3)
+#define ARM_PSCI_0_2_FN64_AFFINITY_INFO		ARM_PSCI_0_2_FN64(4)
+#define ARM_PSCI_0_2_FN64_MIGRATE		ARM_PSCI_0_2_FN64(5)
+#define ARM_PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU	ARM_PSCI_0_2_FN64(7)
+
 /* PSCI 1.0 interface */
 #define ARM_PSCI_1_0_FN_PSCI_FEATURES		ARM_PSCI_0_2_FN(10)
 #define ARM_PSCI_1_0_FN_CPU_FREEZE		ARM_PSCI_0_2_FN(11)
@@ -66,6 +75,12 @@
 #define ARM_PSCI_1_0_FN_STAT_RESIDENCY		ARM_PSCI_0_2_FN(16)
 #define ARM_PSCI_1_0_FN_STAT_COUNT		ARM_PSCI_0_2_FN(17)
 
+#define ARM_PSCI_1_0_FN64_CPU_DEFAULT_SUSPEND	ARM_PSCI_0_2_FN64(12)
+#define ARM_PSCI_1_0_FN64_NODE_HW_STATE		ARM_PSCI_0_2_FN64(13)
+#define ARM_PSCI_1_0_FN64_SYSTEM_SUSPEND	ARM_PSCI_0_2_FN64(14)
+#define ARM_PSCI_1_0_FN64_STAT_RESIDENCY	ARM_PSCI_0_2_FN64(16)
+#define ARM_PSCI_1_0_FN64_STAT_COUNT		ARM_PSCI_0_2_FN64(17)
+
 /* 1KB stack per core */
 #define ARM_PSCI_STACK_SHIFT	10
 #define ARM_PSCI_STACK_SIZE	(1 << ARM_PSCI_STACK_SHIFT)
-- 
2.1.4

[U-Boot] [PATCH v3 4/5] ARMv8: Setup PSCI memory and device tree

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

The newly added ARMv8 PSCI needs to be initialized, be copied or reserved in
right place, this patch does all the setup steps.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
---
 arch/arm/cpu/armv8/cpu-dt.c   |  8 ++++++++
 arch/arm/cpu/armv8/cpu.c      | 22 ++++++++++++++++++++++
 arch/arm/include/asm/secure.h |  2 +-
 arch/arm/include/asm/system.h | 11 +++++++++++
 arch/arm/lib/bootm.c          |  3 +++
 arch/arm/lib/psci-dt.c        |  2 +-
 6 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv8/cpu-dt.c b/arch/arm/cpu/armv8/cpu-dt.c
index 9ffb49c..f227a10 100644
--- a/arch/arm/cpu/armv8/cpu-dt.c
+++ b/arch/arm/cpu/armv8/cpu-dt.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <asm/psci.h>
+#include <asm/system.h>
 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
 #include <asm/armv8/sec_firmware.h>
 #endif
@@ -25,6 +26,13 @@ int psci_update_dt(void *fdt)
 		return 0;
 #endif
 	fdt_psci(fdt);
+
+#ifndef CONFIG_ARMV8_SECURE_BASE
+	/* secure code lives in RAM, keep it alive */
+	fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
+			__secure_end - __secure_start);
+#endif
+
 #endif
 #endif
 	return 0;
diff --git a/arch/arm/cpu/armv8/cpu.c b/arch/arm/cpu/armv8/cpu.c
index e06c3cc..5dcb5e2 100644
--- a/arch/arm/cpu/armv8/cpu.c
+++ b/arch/arm/cpu/armv8/cpu.c
@@ -14,6 +14,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/system.h>
+#include <asm/secure.h>
 #include <linux/compiler.h>
 
 int cleanup_before_linux(void)
@@ -41,3 +42,24 @@ int cleanup_before_linux(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_ARMV8_PSCI
+static void relocate_secure_section(void)
+{
+#ifdef CONFIG_ARMV8_SECURE_BASE
+	size_t sz = __secure_end - __secure_start;
+
+	memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
+	flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
+			   CONFIG_ARMV8_SECURE_BASE + sz + 1);
+	invalidate_icache_all();
+#endif
+}
+
+void armv8_setup_psci(void)
+{
+	relocate_secure_section();
+	secure_ram_addr(psci_setup_vectors)();
+	secure_ram_addr(psci_arch_init)();
+}
+#endif
diff --git a/arch/arm/include/asm/secure.h b/arch/arm/include/asm/secure.h
index 5a403bc..d23044a 100644
--- a/arch/arm/include/asm/secure.h
+++ b/arch/arm/include/asm/secure.h
@@ -6,7 +6,7 @@
 #define __secure __attribute__ ((section ("._secure.text")))
 #define __secure_data __attribute__ ((section ("._secure.data")))
 
-#ifdef CONFIG_ARMV7_SECURE_BASE
+#if defined(CONFIG_ARMV7_SECURE_BASE) || defined(CONFIG_ARMV8_SECURE_BASE)
 /*
  * Warning, horror ahead.
  *
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index b928bd8..9064e6b 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -118,6 +118,17 @@ void smc_call(struct pt_regs *args);
 void __noreturn psci_system_reset(void);
 void __noreturn psci_system_off(void);
 
+#ifdef CONFIG_ARMV8_PSCI
+extern char __secure_start[];
+extern char __secure_end[];
+extern char __secure_stack_start[];
+extern char __secure_stack_end[];
+
+void armv8_setup_psci(void);
+void psci_setup_vectors(void);
+void psci_arch_init(void);
+#endif
+
 #endif	/* __ASSEMBLY__ */
 
 #else /* CONFIG_ARM64 */
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 53c3141..9fe1a5f 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -291,6 +291,9 @@ static void boot_jump_linux(bootm_headers_t *images, int flag)
 	announce_and_cleanup(fake);
 
 	if (!fake) {
+#ifdef CONFIG_ARMV8_PSCI
+		armv8_setup_psci();
+#endif
 		do_nonsec_virt_switch();
 		kernel_entry(images->ft_addr, NULL, NULL, NULL);
 	}
diff --git a/arch/arm/lib/psci-dt.c b/arch/arm/lib/psci-dt.c
index baf6d70..a70f3d3 100644
--- a/arch/arm/lib/psci-dt.c
+++ b/arch/arm/lib/psci-dt.c
@@ -65,7 +65,7 @@ int fdt_psci(void *fdt)
 init_psci_node:
 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
 	psci_ver = sec_firmware_support_psci_version();
-#elif defined(CONFIG_ARMV7_PSCI_1_0)
+#elif defined(CONFIG_ARMV7_PSCI_1_0) || defined(CONFIG_ARMV8_PSCI)
 	psci_ver = ARM_PSCI_VER_1_0;
 #endif
 	switch (psci_ver) {
-- 
2.1.4

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[macro.wave.z at gmail.com]

From: Hongbo Zhang <hongbo.zhang@nxp.com>

A most basic PSCI implementation with only one psci_version is added for
LS1043A, this can verify the generic PSCI framework, and more platform specific
implementation will be added later.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20 ++++++++++++++++++++
 board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
 configs/ls1043ardb_defconfig                     |  3 +++
 4 files changed, 33 insertions(+)
 create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
index 51c1cee..423b4b3 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
@@ -28,6 +28,7 @@ endif
 
 ifneq ($(CONFIG_LS1043A),)
 obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
+obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
 endif
 
 ifneq ($(CONFIG_ARCH_LS1012A),)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
new file mode 100644
index 0000000..86045ac
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/psci.h>
+
+	.pushsection ._secure.text, "ax"
+
+.globl	psci_version
+psci_version:
+	ldr	w0, =0x00010000		/* PSCI v1.0 */
+	ret
+
+	.popsection
diff --git a/board/freescale/ls1043ardb/Kconfig b/board/freescale/ls1043ardb/Kconfig
index 51818ec..0c596f9 100644
--- a/board/freescale/ls1043ardb/Kconfig
+++ b/board/freescale/ls1043ardb/Kconfig
@@ -13,4 +13,13 @@ config SYS_SOC
 config SYS_CONFIG_NAME
 	default "ls1043ardb"
 
+config SYS_HAS_ARMV8_SECURE_BASE
+	bool "Enable secure RAM for PSCI image"
+	depends on ARMV8_PSCI
+	default y
+	help
+	  PSCI image can be re-located to secure RAM.
+	  If enabled, please also define the value for ARMV8_SECURE_BASE,
+	  for LS1043ARDB, it is address in OCRAM.
+
 endif
diff --git a/configs/ls1043ardb_defconfig b/configs/ls1043ardb_defconfig
index 79a4eb2..cb189f3 100644
--- a/configs/ls1043ardb_defconfig
+++ b/configs/ls1043ardb_defconfig
@@ -28,3 +28,6 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y
+CONFIG_ARMV8_PSCI=y
+CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
+CONFIG_ARMV8_SECURE_BASE=0x10010000
-- 
2.1.4

[U-Boot] [PATCH v3 3/5] ARMv8: Add basic PSCI framework

[Tom Rini]

On Mon, Nov 07, 2016 at 12:13:52PM +0800, macro.wave.z at gmail.com wrote:

> From: Hongbo Zhang <hongbo.zhang@nxp.com>
> 
> This patch introduces a generic ARMv8 PSCI framework, with all functions
> returning a dummy ARM_PSCI_RET_NI (Not Implemented), then it is up to each
> platform to implement their own functions based on this framework.
> 
> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom
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[U-Boot] [PATCH v3 4/5] ARMv8: Setup PSCI memory and device tree

[Tom Rini]

On Mon, Nov 07, 2016 at 12:13:53PM +0800, macro.wave.z at gmail.com wrote:

> From: Hongbo Zhang <hongbo.zhang@nxp.com>
> 
> The newly added ARMv8 PSCI needs to be initialized, be copied or reserved in
> right place, this patch does all the setup steps.
> 
> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom
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[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Tom Rini]

On Mon, Nov 07, 2016 at 12:13:54PM +0800, macro.wave.z at gmail.com wrote:

> From: Hongbo Zhang <hongbo.zhang@nxp.com>
> 
> A most basic PSCI implementation with only one psci_version is added for
> LS1043A, this can verify the generic PSCI framework, and more platform specific
> implementation will be added later.
> 
> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom
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[U-Boot] [PATCH v3 3/5] ARMv8: Add basic PSCI framework

[Hongbo Zhang]

On Sat, Nov 12, 2016 at 12:06 AM, Tom Rini <trini@konsulko.com> wrote:
> On Mon, Nov 07, 2016 at 12:13:52PM +0800, macro.wave.z at gmail.com wrote:
>
>> From: Hongbo Zhang <hongbo.zhang@nxp.com>
>>
>> This patch introduces a generic ARMv8 PSCI framework, with all functions
>> returning a dummy ARM_PSCI_RET_NI (Not Implemented), then it is up to each
>> platform to implement their own functions based on this framework.
>>
>> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
>
> Reviewed-by: Tom Rini <trini@konsulko.com>
>

Thanks Tom.

> --
> Tom

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[york sun]

On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
> From: Hongbo Zhang <hongbo.zhang@nxp.com>
>
> A most basic PSCI implementation with only one psci_version is added for
> LS1043A, this can verify the generic PSCI framework, and more platform specific
> implementation will be added later.
>
> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
>  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20 ++++++++++++++++++++
>  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
>  configs/ls1043ardb_defconfig                     |  3 +++
>  4 files changed, 33 insertions(+)
>  create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> index 51c1cee..423b4b3 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> @@ -28,6 +28,7 @@ endif
>
>  ifneq ($(CONFIG_LS1043A),)
>  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
> +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
>  endif
>
>  ifneq ($(CONFIG_ARCH_LS1012A),)
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> new file mode 100644
> index 0000000..86045ac
> --- /dev/null
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> @@ -0,0 +1,20 @@
> +/*
> + * Copyright 2016 Freescale Semiconductor, Inc.
> + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
> + */
> +
> +#include <config.h>
> +#include <linux/linkage.h>
> +#include <asm/psci.h>
> +
> +	.pushsection ._secure.text, "ax"
> +
> +.globl	psci_version
> +psci_version:
> +	ldr	w0, =0x00010000		/* PSCI v1.0 */
> +	ret
> +
> +	.popsection
> diff --git a/board/freescale/ls1043ardb/Kconfig b/board/freescale/ls1043ardb/Kconfig
> index 51818ec..0c596f9 100644
> --- a/board/freescale/ls1043ardb/Kconfig
> +++ b/board/freescale/ls1043ardb/Kconfig
> @@ -13,4 +13,13 @@ config SYS_SOC
>  config SYS_CONFIG_NAME
>  	default "ls1043ardb"
>
> +config SYS_HAS_ARMV8_SECURE_BASE
> +	bool "Enable secure RAM for PSCI image"
> +	depends on ARMV8_PSCI
> +	default y
> +	help
> +	  PSCI image can be re-located to secure RAM.
> +	  If enabled, please also define the value for ARMV8_SECURE_BASE,
> +	  for LS1043ARDB, it is address in OCRAM.
> +
>  endif
> diff --git a/configs/ls1043ardb_defconfig b/configs/ls1043ardb_defconfig
> index 79a4eb2..cb189f3 100644
> --- a/configs/ls1043ardb_defconfig
> +++ b/configs/ls1043ardb_defconfig
> @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
>  CONFIG_USB_XHCI_HCD=y
>  CONFIG_USB_XHCI_DWC3=y
>  CONFIG_USB_STORAGE=y
> +CONFIG_ARMV8_PSCI=y
> +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
> +CONFIG_ARMV8_SECURE_BASE=0x10010000
>

How do you decide the CONFIG_ARMV8_SECURE_BASE?

Zhiqiang,

Does this patch set interfere with existing PPA support?

York

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Hongbo Zhang]

On Tue, Nov 15, 2016 at 2:12 AM, york sun <york.sun@nxp.com> wrote:
> On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
>> From: Hongbo Zhang <hongbo.zhang@nxp.com>
>>
>> A most basic PSCI implementation with only one psci_version is added for
>> LS1043A, this can verify the generic PSCI framework, and more platform specific
>> implementation will be added later.
>>
>> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
>> ---
>>  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
>>  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20 ++++++++++++++++++++
>>  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
>>  configs/ls1043ardb_defconfig                     |  3 +++
>>  4 files changed, 33 insertions(+)
>>  create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>>
>> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> index 51c1cee..423b4b3 100644
>> --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> @@ -28,6 +28,7 @@ endif
>>
>>  ifneq ($(CONFIG_LS1043A),)
>>  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
>> +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
>>  endif
>>
>>  ifneq ($(CONFIG_ARCH_LS1012A),)
>> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> new file mode 100644
>> index 0000000..86045ac
>> --- /dev/null
>> +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> @@ -0,0 +1,20 @@
>> +/*
>> + * Copyright 2016 Freescale Semiconductor, Inc.
>> + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
>> + *
>> + * SPDX-License-Identifier:  GPL-2.0+
>> + * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
>> + */
>> +
>> +#include <config.h>
>> +#include <linux/linkage.h>
>> +#include <asm/psci.h>
>> +
>> +     .pushsection ._secure.text, "ax"
>> +
>> +.globl       psci_version
>> +psci_version:
>> +     ldr     w0, =0x00010000         /* PSCI v1.0 */
>> +     ret
>> +
>> +     .popsection
>> diff --git a/board/freescale/ls1043ardb/Kconfig b/board/freescale/ls1043ardb/Kconfig
>> index 51818ec..0c596f9 100644
>> --- a/board/freescale/ls1043ardb/Kconfig
>> +++ b/board/freescale/ls1043ardb/Kconfig
>> @@ -13,4 +13,13 @@ config SYS_SOC
>>  config SYS_CONFIG_NAME
>>       default "ls1043ardb"
>>
>> +config SYS_HAS_ARMV8_SECURE_BASE
>> +     bool "Enable secure RAM for PSCI image"
>> +     depends on ARMV8_PSCI
>> +     default y
>> +     help
>> +       PSCI image can be re-located to secure RAM.
>> +       If enabled, please also define the value for ARMV8_SECURE_BASE,
>> +       for LS1043ARDB, it is address in OCRAM.
>> +
>>  endif
>> diff --git a/configs/ls1043ardb_defconfig b/configs/ls1043ardb_defconfig
>> index 79a4eb2..cb189f3 100644
>> --- a/configs/ls1043ardb_defconfig
>> +++ b/configs/ls1043ardb_defconfig
>> @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
>>  CONFIG_USB_XHCI_HCD=y
>>  CONFIG_USB_XHCI_DWC3=y
>>  CONFIG_USB_STORAGE=y
>> +CONFIG_ARMV8_PSCI=y
>> +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
>> +CONFIG_ARMV8_SECURE_BASE=0x10010000
>>
>
> How do you decide the CONFIG_ARMV8_SECURE_BASE?
>

It is OCRAM1, just like ARMv7 LS1021.

> Zhiqiang,
>
> Does this patch set interfere with existing PPA support?
>
> York

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Z.Q. Hou]

Hi York

> -----Original Message-----
> From: york sun
> Sent: 2016?11?15? 2:12
> To: macro.wave.z at gmail.com; u-boot at lists.denx.de; trini at konsulko.com;
> Z.Q. Hou <zhiqiang.hou@nxp.com>
> Cc: wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI
> support
> 
> On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
> > From: Hongbo Zhang <hongbo.zhang@nxp.com>
> >
> > A most basic PSCI implementation with only one psci_version is added
> > for LS1043A, this can verify the generic PSCI framework, and more
> > platform specific implementation will be added later.
> >
> > Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
> > ---
> >  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
> >  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20
> ++++++++++++++++++++
> >  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
> >  configs/ls1043ardb_defconfig                     |  3 +++
> >  4 files changed, 33 insertions(+)
> >  create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> >
> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> > b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> > index 51c1cee..423b4b3 100644
> > --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> > @@ -28,6 +28,7 @@ endif
> >
> >  ifneq ($(CONFIG_LS1043A),)
> >  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
> > +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
> >  endif
> >
> >  ifneq ($(CONFIG_ARCH_LS1012A),)
> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> > b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> > new file mode 100644
> > index 0000000..86045ac
> > --- /dev/null
> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> > @@ -0,0 +1,20 @@
> > +/*
> > + * Copyright 2016 Freescale Semiconductor, Inc.
> > + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
> > + *
> > + * SPDX-License-Identifier:	GPL-2.0+
> > + * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
> > +*/
> > +
> > +#include <config.h>
> > +#include <linux/linkage.h>
> > +#include <asm/psci.h>
> > +
> > +	.pushsection ._secure.text, "ax"
> > +
> > +.globl	psci_version
> > +psci_version:
> > +	ldr	w0, =0x00010000		/* PSCI v1.0 */
> > +	ret
> > +
> > +	.popsection
> > diff --git a/board/freescale/ls1043ardb/Kconfig
> > b/board/freescale/ls1043ardb/Kconfig
> > index 51818ec..0c596f9 100644
> > --- a/board/freescale/ls1043ardb/Kconfig
> > +++ b/board/freescale/ls1043ardb/Kconfig
> > @@ -13,4 +13,13 @@ config SYS_SOC
> >  config SYS_CONFIG_NAME
> >  	default "ls1043ardb"
> >
> > +config SYS_HAS_ARMV8_SECURE_BASE
> > +	bool "Enable secure RAM for PSCI image"
> > +	depends on ARMV8_PSCI
> > +	default y
> > +	help
> > +	  PSCI image can be re-located to secure RAM.
> > +	  If enabled, please also define the value for ARMV8_SECURE_BASE,
> > +	  for LS1043ARDB, it is address in OCRAM.
> > +
> >  endif
> > diff --git a/configs/ls1043ardb_defconfig
> > b/configs/ls1043ardb_defconfig index 79a4eb2..cb189f3 100644
> > --- a/configs/ls1043ardb_defconfig
> > +++ b/configs/ls1043ardb_defconfig
> > @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
> >  CONFIG_USB_XHCI_HCD=y
> >  CONFIG_USB_XHCI_DWC3=y
> >  CONFIG_USB_STORAGE=y
> > +CONFIG_ARMV8_PSCI=y
> > +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
> > +CONFIG_ARMV8_SECURE_BASE=0x10010000
> >
> 
> How do you decide the CONFIG_ARMV8_SECURE_BASE?
> 
> Zhiqiang,
> 
> Does this patch set interfere with existing PPA support?

Tried Hongbo's patches with PPA enabled on ls1043ardb, kernel boot failed.
I guess hongbo's u-boot psci setup triggered an exception, because when PPA is initialized u-boot will execute on EL2.

Hongbo, how did you process this circumstance? Another problem, if PPA is disabled, u-boot will go through the spin-table process to wake up secondary cores, will this affect u-boot psci?

Thanks,
Zhiqiang

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Hongbo Zhang]

On Tue, Nov 15, 2016 at 11:37 AM, Z.Q. Hou <zhiqiang.hou@nxp.com> wrote:
> Hi York
>
>> -----Original Message-----
>> From: york sun
>> Sent: 2016?11?15? 2:12
>> To: macro.wave.z at gmail.com; u-boot at lists.denx.de; trini at konsulko.com;
>> Z.Q. Hou <zhiqiang.hou@nxp.com>
>> Cc: wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
>> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI
>> support
>>
>> On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
>> > From: Hongbo Zhang <hongbo.zhang@nxp.com>
>> >
>> > A most basic PSCI implementation with only one psci_version is added
>> > for LS1043A, this can verify the generic PSCI framework, and more
>> > platform specific implementation will be added later.
>> >
>> > Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
>> > ---
>> >  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
>> >  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20
>> ++++++++++++++++++++
>> >  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
>> >  configs/ls1043ardb_defconfig                     |  3 +++
>> >  4 files changed, 33 insertions(+)
>> >  create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> >
>> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> > b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> > index 51c1cee..423b4b3 100644
>> > --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> > @@ -28,6 +28,7 @@ endif
>> >
>> >  ifneq ($(CONFIG_LS1043A),)
>> >  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
>> > +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
>> >  endif
>> >
>> >  ifneq ($(CONFIG_ARCH_LS1012A),)
>> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> > b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> > new file mode 100644
>> > index 0000000..86045ac
>> > --- /dev/null
>> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> > @@ -0,0 +1,20 @@
>> > +/*
>> > + * Copyright 2016 Freescale Semiconductor, Inc.
>> > + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
>> > + *
>> > + * SPDX-License-Identifier:        GPL-2.0+
>> > + * This file implements LS102X platform PSCI SYSTEM-SUSPEND function
>> > +*/
>> > +
>> > +#include <config.h>
>> > +#include <linux/linkage.h>
>> > +#include <asm/psci.h>
>> > +
>> > +   .pushsection ._secure.text, "ax"
>> > +
>> > +.globl     psci_version
>> > +psci_version:
>> > +   ldr     w0, =0x00010000         /* PSCI v1.0 */
>> > +   ret
>> > +
>> > +   .popsection
>> > diff --git a/board/freescale/ls1043ardb/Kconfig
>> > b/board/freescale/ls1043ardb/Kconfig
>> > index 51818ec..0c596f9 100644
>> > --- a/board/freescale/ls1043ardb/Kconfig
>> > +++ b/board/freescale/ls1043ardb/Kconfig
>> > @@ -13,4 +13,13 @@ config SYS_SOC
>> >  config SYS_CONFIG_NAME
>> >     default "ls1043ardb"
>> >
>> > +config SYS_HAS_ARMV8_SECURE_BASE
>> > +   bool "Enable secure RAM for PSCI image"
>> > +   depends on ARMV8_PSCI
>> > +   default y
>> > +   help
>> > +     PSCI image can be re-located to secure RAM.
>> > +     If enabled, please also define the value for ARMV8_SECURE_BASE,
>> > +     for LS1043ARDB, it is address in OCRAM.
>> > +
>> >  endif
>> > diff --git a/configs/ls1043ardb_defconfig
>> > b/configs/ls1043ardb_defconfig index 79a4eb2..cb189f3 100644
>> > --- a/configs/ls1043ardb_defconfig
>> > +++ b/configs/ls1043ardb_defconfig
>> > @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
>> >  CONFIG_USB_XHCI_HCD=y
>> >  CONFIG_USB_XHCI_DWC3=y
>> >  CONFIG_USB_STORAGE=y
>> > +CONFIG_ARMV8_PSCI=y
>> > +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
>> > +CONFIG_ARMV8_SECURE_BASE=0x10010000
>> >
>>
>> How do you decide the CONFIG_ARMV8_SECURE_BASE?
>>
>> Zhiqiang,
>>
>> Does this patch set interfere with existing PPA support?
>
> Tried Hongbo's patches with PPA enabled on ls1043ardb, kernel boot failed.
> I guess hongbo's u-boot psci setup triggered an exception, because when PPA is initialized u-boot will execute on EL2.
>
> Hongbo, how did you process this circumstance? Another problem, if PPA is disabled, u-boot will go through the spin-table process to wake up secondary cores, will this affect u-boot psci?

My psci setup doesn't trigger any exception at all.
and about secondary core booting, currently my psci doesn't cover
this, it is planned next.

>
> Thanks,
> Zhiqiang

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Z.Q. Hou]

Hi Hongbo,

> -----Original Message-----
> From: Hongbo Zhang [mailto:macro.wave.z at gmail.com]
> Sent: 2016?11?15? 18:29
> To: Z.Q. Hou <zhiqiang.hou@nxp.com>
> Cc: york sun <york.sun@nxp.com>; u-boot at lists.denx.de; trini at konsulko.com;
> wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI
> support
> 
> On Tue, Nov 15, 2016 at 11:37 AM, Z.Q. Hou <zhiqiang.hou@nxp.com> wrote:
> > Hi York
> >
> >> -----Original Message-----
> >> From: york sun
> >> Sent: 2016?11?15? 2:12
> >> To: macro.wave.z at gmail.com; u-boot at lists.denx.de; trini at konsulko.com;
> >> Z.Q. Hou <zhiqiang.hou@nxp.com>
> >> Cc: wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
> >> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default
> >> PSCI support
> >>
> >> On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
> >> > From: Hongbo Zhang <hongbo.zhang@nxp.com>
> >> >
> >> > A most basic PSCI implementation with only one psci_version is
> >> > added for LS1043A, this can verify the generic PSCI framework, and
> >> > more platform specific implementation will be added later.
> >> >
> >> > Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
> >> > ---
> >> >  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
> >> >  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20
> >> ++++++++++++++++++++
> >> >  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
> >> >  configs/ls1043ardb_defconfig                     |  3 +++
> >> >  4 files changed, 33 insertions(+)
> >> >  create mode 100644
> >> > arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> >> >
> >> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> >> > b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> >> > index 51c1cee..423b4b3 100644
> >> > --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> >> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
> >> > @@ -28,6 +28,7 @@ endif
> >> >
> >> >  ifneq ($(CONFIG_LS1043A),)
> >> >  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
> >> > +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
> >> >  endif
> >> >
> >> >  ifneq ($(CONFIG_ARCH_LS1012A),)
> >> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> >> > b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> >> > new file mode 100644
> >> > index 0000000..86045ac
> >> > --- /dev/null
> >> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
> >> > @@ -0,0 +1,20 @@
> >> > +/*
> >> > + * Copyright 2016 Freescale Semiconductor, Inc.
> >> > + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
> >> > + *
> >> > + * SPDX-License-Identifier:        GPL-2.0+
> >> > + * This file implements LS102X platform PSCI SYSTEM-SUSPEND
> >> > +function */
> >> > +
> >> > +#include <config.h>
> >> > +#include <linux/linkage.h>
> >> > +#include <asm/psci.h>
> >> > +
> >> > +   .pushsection ._secure.text, "ax"
> >> > +
> >> > +.globl     psci_version
> >> > +psci_version:
> >> > +   ldr     w0, =0x00010000         /* PSCI v1.0 */
> >> > +   ret
> >> > +
> >> > +   .popsection
> >> > diff --git a/board/freescale/ls1043ardb/Kconfig
> >> > b/board/freescale/ls1043ardb/Kconfig
> >> > index 51818ec..0c596f9 100644
> >> > --- a/board/freescale/ls1043ardb/Kconfig
> >> > +++ b/board/freescale/ls1043ardb/Kconfig
> >> > @@ -13,4 +13,13 @@ config SYS_SOC
> >> >  config SYS_CONFIG_NAME
> >> >     default "ls1043ardb"
> >> >
> >> > +config SYS_HAS_ARMV8_SECURE_BASE
> >> > +   bool "Enable secure RAM for PSCI image"
> >> > +   depends on ARMV8_PSCI
> >> > +   default y
> >> > +   help
> >> > +     PSCI image can be re-located to secure RAM.
> >> > +     If enabled, please also define the value for ARMV8_SECURE_BASE,
> >> > +     for LS1043ARDB, it is address in OCRAM.
> >> > +
> >> >  endif
> >> > diff --git a/configs/ls1043ardb_defconfig
> >> > b/configs/ls1043ardb_defconfig index 79a4eb2..cb189f3 100644
> >> > --- a/configs/ls1043ardb_defconfig
> >> > +++ b/configs/ls1043ardb_defconfig
> >> > @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
> >> >  CONFIG_USB_XHCI_HCD=y
> >> >  CONFIG_USB_XHCI_DWC3=y
> >> >  CONFIG_USB_STORAGE=y
> >> > +CONFIG_ARMV8_PSCI=y
> >> > +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
> >> > +CONFIG_ARMV8_SECURE_BASE=0x10010000
> >> >
> >>
> >> How do you decide the CONFIG_ARMV8_SECURE_BASE?
> >>
> >> Zhiqiang,
> >>
> >> Does this patch set interfere with existing PPA support?
> >
> > Tried Hongbo's patches with PPA enabled on ls1043ardb, kernel boot failed.
> > I guess hongbo's u-boot psci setup triggered an exception, because when
> PPA is initialized u-boot will execute on EL2.
> >
> > Hongbo, how did you process this circumstance? Another problem, if PPA is
> disabled, u-boot will go through the spin-table process to wake up secondary
> cores, will this affect u-boot psci?
> 
> My psci setup doesn't trigger any exception at all.
> and about secondary core booting, currently my psci doesn't cover this, it is
> planned next.

Did you enabled PPA in your experiment? In my side, when PPA initialized the psci setup will trigger exception.

Thanks,
Zhiqiang

[U-Boot] [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI support

[Hongbo Zhang]

Then my previous v2 1/6 was right, I should not cancel it.
https://patchwork.ozlabs.org/patch/689804/

Tom, York,
I'll have to re-send this patch set with previous 1/6 included again,
with some updates Tom mentioned, e.g move the macros touched into
Kconfig although those configs were not created by me.

Comments are still welcome before I send patches out early next week.

Thanks all.


On Wed, Nov 16, 2016 at 11:53 AM, Z.Q. Hou <zhiqiang.hou@nxp.com> wrote:
> Hi Hongbo,
>
>> -----Original Message-----
>> From: Hongbo Zhang [mailto:macro.wave.z at gmail.com]
>> Sent: 2016?11?15? 18:29
>> To: Z.Q. Hou <zhiqiang.hou@nxp.com>
>> Cc: york sun <york.sun@nxp.com>; u-boot at lists.denx.de; trini at konsulko.com;
>> wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
>> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default PSCI
>> support
>>
>> On Tue, Nov 15, 2016 at 11:37 AM, Z.Q. Hou <zhiqiang.hou@nxp.com> wrote:
>> > Hi York
>> >
>> >> -----Original Message-----
>> >> From: york sun
>> >> Sent: 2016?11?15? 2:12
>> >> To: macro.wave.z at gmail.com; u-boot at lists.denx.de; trini at konsulko.com;
>> >> Z.Q. Hou <zhiqiang.hou@nxp.com>
>> >> Cc: wens at csie.org; H.B. Zhang <hongbo.zhang@nxp.com>
>> >> Subject: Re: [PATCH v3 5/5] ARMv8: LS1043A: Enable LS1043A default
>> >> PSCI support
>> >>
>> >> On 11/06/2016 08:14 PM, macro.wave.z at gmail.com wrote:
>> >> > From: Hongbo Zhang <hongbo.zhang@nxp.com>
>> >> >
>> >> > A most basic PSCI implementation with only one psci_version is
>> >> > added for LS1043A, this can verify the generic PSCI framework, and
>> >> > more platform specific implementation will be added later.
>> >> >
>> >> > Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
>> >> > ---
>> >> >  arch/arm/cpu/armv8/fsl-layerscape/Makefile       |  1 +
>> >> >  arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S | 20
>> >> ++++++++++++++++++++
>> >> >  board/freescale/ls1043ardb/Kconfig               |  9 +++++++++
>> >> >  configs/ls1043ardb_defconfig                     |  3 +++
>> >> >  4 files changed, 33 insertions(+)
>> >> >  create mode 100644
>> >> > arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> >> >
>> >> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> >> > b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> >> > index 51c1cee..423b4b3 100644
>> >> > --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> >> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
>> >> > @@ -28,6 +28,7 @@ endif
>> >> >
>> >> >  ifneq ($(CONFIG_LS1043A),)
>> >> >  obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
>> >> > +obj-$(CONFIG_ARMV8_PSCI) += ls1043a_psci.o
>> >> >  endif
>> >> >
>> >> >  ifneq ($(CONFIG_ARCH_LS1012A),)
>> >> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> >> > b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> >> > new file mode 100644
>> >> > index 0000000..86045ac
>> >> > --- /dev/null
>> >> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1043a_psci.S
>> >> > @@ -0,0 +1,20 @@
>> >> > +/*
>> >> > + * Copyright 2016 Freescale Semiconductor, Inc.
>> >> > + * Author: Hongbo Zhang <hongbo.zhang@nxp.com>
>> >> > + *
>> >> > + * SPDX-License-Identifier:        GPL-2.0+
>> >> > + * This file implements LS102X platform PSCI SYSTEM-SUSPEND
>> >> > +function */
>> >> > +
>> >> > +#include <config.h>
>> >> > +#include <linux/linkage.h>
>> >> > +#include <asm/psci.h>
>> >> > +
>> >> > +   .pushsection ._secure.text, "ax"
>> >> > +
>> >> > +.globl     psci_version
>> >> > +psci_version:
>> >> > +   ldr     w0, =0x00010000         /* PSCI v1.0 */
>> >> > +   ret
>> >> > +
>> >> > +   .popsection
>> >> > diff --git a/board/freescale/ls1043ardb/Kconfig
>> >> > b/board/freescale/ls1043ardb/Kconfig
>> >> > index 51818ec..0c596f9 100644
>> >> > --- a/board/freescale/ls1043ardb/Kconfig
>> >> > +++ b/board/freescale/ls1043ardb/Kconfig
>> >> > @@ -13,4 +13,13 @@ config SYS_SOC
>> >> >  config SYS_CONFIG_NAME
>> >> >     default "ls1043ardb"
>> >> >
>> >> > +config SYS_HAS_ARMV8_SECURE_BASE
>> >> > +   bool "Enable secure RAM for PSCI image"
>> >> > +   depends on ARMV8_PSCI
>> >> > +   default y
>> >> > +   help
>> >> > +     PSCI image can be re-located to secure RAM.
>> >> > +     If enabled, please also define the value for ARMV8_SECURE_BASE,
>> >> > +     for LS1043ARDB, it is address in OCRAM.
>> >> > +
>> >> >  endif
>> >> > diff --git a/configs/ls1043ardb_defconfig
>> >> > b/configs/ls1043ardb_defconfig index 79a4eb2..cb189f3 100644
>> >> > --- a/configs/ls1043ardb_defconfig
>> >> > +++ b/configs/ls1043ardb_defconfig
>> >> > @@ -28,3 +28,6 @@ CONFIG_DM_USB=y
>> >> >  CONFIG_USB_XHCI_HCD=y
>> >> >  CONFIG_USB_XHCI_DWC3=y
>> >> >  CONFIG_USB_STORAGE=y
>> >> > +CONFIG_ARMV8_PSCI=y
>> >> > +CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER=4
>> >> > +CONFIG_ARMV8_SECURE_BASE=0x10010000
>> >> >
>> >>
>> >> How do you decide the CONFIG_ARMV8_SECURE_BASE?
>> >>
>> >> Zhiqiang,
>> >>
>> >> Does this patch set interfere with existing PPA support?
>> >
>> > Tried Hongbo's patches with PPA enabled on ls1043ardb, kernel boot failed.
>> > I guess hongbo's u-boot psci setup triggered an exception, because when
>> PPA is initialized u-boot will execute on EL2.
>> >
>> > Hongbo, how did you process this circumstance? Another problem, if PPA is
>> disabled, u-boot will go through the spin-table process to wake up secondary
>> cores, will this affect u-boot psci?
>>
>> My psci setup doesn't trigger any exception at all.
>> and about secondary core booting, currently my psci doesn't cover this, it is
>> planned next.
>
> Did you enabled PPA in your experiment? In my side, when PPA initialized the psci setup will trigger exception.
>
> Thanks,
> Zhiqiang