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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Minios-devel] [UNIKRAFT PATCHv6 24/37] plat/common: Implement PSCI despatch functions for arm64
Reviewed-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx> On 14.09.2018 09:56, Wei Chen wrote: Implement PSCI dispatch functions for different conduits. The platforms can select correct despatch function as the PSCI conduit they are using. Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx> Reviewed-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx> --- plat/common/arm/psci_arm64.S | 55 ++++++++++++++++++++++++ plat/common/include/arm/arm64/cpu.h | 9 ++++ plat/common/include/arm/arm64/cpu_defs.h | 14 ++++++ plat/kvm/Makefile.uk | 1 + 4 files changed, 79 insertions(+) create mode 100644 plat/common/arm/psci_arm64.S diff --git a/plat/common/arm/psci_arm64.S b/plat/common/arm/psci_arm64.S new file mode 100644 index 0000000..52d34e5 --- /dev/null +++ b/plat/common/arm/psci_arm64.S @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * Authors: Wei Chen <wei.chen@xxxxxxx> + * + * Copyright (c) 2018, Arm Ltd. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY. + */ +#include <uk/asm.h> +#include <arm/cpu_defs.h> + +/* + * Use HVC to call PSCI functions, based on the SMC Calling + * Convention: + * int32_t smcc_psci_hvc_call(uint32_t, uint64_t, uint64_t, uint64_t); + */ +ENTRY(smcc_psci_hvc_call) + hvc #0 + ret +END(smcc_psci_hvc_call) + +/* + * Use SMC to call PSCI functions, based on the SMC Calling + * Convention: + * int32_t smcc_psci_smc_call(uint32_t, uint64_t, uint64_t, uint64_t); + */ +ENTRY(smcc_psci_smc_call) + smc #0 + ret +END(smcc_psci_smc_call) diff --git a/plat/common/include/arm/arm64/cpu.h b/plat/common/include/arm/arm64/cpu.h index db8be9c..0426ebd 100644 --- a/plat/common/include/arm/arm64/cpu.h +++ b/plat/common/include/arm/arm64/cpu.h @@ -104,3 +104,12 @@ static inline void ioreg_write64(volatile uint64_t *addr, uint64_t value)#define SYSREG_READ64(reg) SYSREG_READ(reg)#define SYSREG_WRITE64(reg, val) SYSREG_WRITE(reg, val) + +/* + * PSCI conduit method to call functions, based on the SMC Calling + * Convention. + */ +typedef int (*smcc_psci_callfn_t)(uint32_t, uint64_t, uint64_t, uint64_t); +extern smcc_psci_callfn_t smcc_psci_call; +int32_t smcc_psci_hvc_call(uint32_t, uint64_t, uint64_t, uint64_t); +int32_t smcc_psci_smc_call(uint32_t, uint64_t, uint64_t, uint64_t); diff --git a/plat/common/include/arm/arm64/cpu_defs.h b/plat/common/include/arm/arm64/cpu_defs.h index 71ba307..e6f20a3 100644 --- a/plat/common/include/arm/arm64/cpu_defs.h +++ b/plat/common/include/arm/arm64/cpu_defs.h @@ -34,6 +34,20 @@ #ifndef __CPU_ARM_64_DEFS_H__ #define __CPU_ARM_64_DEFS_H__+/*+ * Power State Coordination Interface (PSCI v0.2) function codes + */ +#define PSCI_FNID_VERSION 0x84000000 +#define PSCI_FNID_CPU_SUSPEND 0xc4000001 +#define PSCI_FNID_CPU_OFF 0x84000002 +#define PSCI_FNID_CPU_ON 0xc4000003 +#define PSCI_FNID_AFFINITY_INFO 0xc4000004 +#define PSCI_FNID_MIGRATE 0xc4000005 +#define PSCI_FNID_MIGRATE_INFO_TYPE 0x84000006 +#define PSCI_FNID_MIGRATE_INFO_UP_CPU 0xc4000007 +#define PSCI_FNID_SYSTEM_OFF 0x84000008 +#define PSCI_FNID_SYSTEM_RESET 0x84000009 + /* * The supported virtual address bits. * We will do 1:1 VA to PA Mapping, so we define the same address size diff --git a/plat/kvm/Makefile.uk b/plat/kvm/Makefile.uk index 52da6fd..b3202be 100644 --- a/plat/kvm/Makefile.uk +++ b/plat/kvm/Makefile.uk @@ -55,6 +55,7 @@ ifeq ($(findstring y,$(CONFIG_KVM_KERNEL_SERIAL_CONSOLE) $(CONFIG_KVM_DEBUG_SERI LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(UK_PLAT_COMMON_BASE)/arm/pl011.c|common endif LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(UK_PLAT_COMMON_BASE)/arm/cache64.S|common +LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(UK_PLAT_COMMON_BASE)/arm/psci_arm64.S|common LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(UK_PLAT_COMMON_BASE)/arm/time.c|common LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(UK_PLAT_COMMON_BASE)/arm/traps.c|common LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBKVMPLAT_BASE)/arm/entry64.S _______________________________________________ Minios-devel mailing list Minios-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/minios-devel
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