Hi Hongbo,
-----Original Message----- From: Hongbo Zhang [mailto:macro.wave.z@gmail.com] Sent: 2016年11月15日 18:29 To: Z.Q. Hou zhiqiang.hou@nxp.com Cc: york sun york.sun@nxp.com; u-boot@lists.denx.de; trini@konsulko.com; wens@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年11月15日 2:12 To: macro.wave.z@gmail.com; u-boot@lists.denx.de; trini@konsulko.com; Z.Q. Hou zhiqiang.hou@nxp.com Cc: wens@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@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