98128601ac
Add support for handling PSCI calls in system emulation. Both version 0.1 and 0.2 of the PSCI spec are supported. Platforms can enable support by setting the "psci-conduit" QOM property on the cpus to SMC or HVC emulation and having a PSCI binding in their dtb. Signed-off-by: Rob Herring <rob.herring@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-7-git-send-email-peter.maydell@linaro.org [PMM: made system reset/off PSCI functions power down the CPU so we obey the PSCI API requirement never to return from them; rearranged how the code is plumbed into the exception system, so that we split "is this a valid call?" from "do the call"] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
/*
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* QEMU ARM CPU
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*
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*/
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#ifndef QEMU_ARM_CPU_QOM_H
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#define QEMU_ARM_CPU_QOM_H
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#include "qom/cpu.h"
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#define TYPE_ARM_CPU "arm-cpu"
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#define ARM_CPU_CLASS(klass) \
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OBJECT_CLASS_CHECK(ARMCPUClass, (klass), TYPE_ARM_CPU)
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#define ARM_CPU(obj) \
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OBJECT_CHECK(ARMCPU, (obj), TYPE_ARM_CPU)
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#define ARM_CPU_GET_CLASS(obj) \
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OBJECT_GET_CLASS(ARMCPUClass, (obj), TYPE_ARM_CPU)
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/**
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* ARMCPUClass:
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* @parent_realize: The parent class' realize handler.
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* @parent_reset: The parent class' reset handler.
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*
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* An ARM CPU model.
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*/
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typedef struct ARMCPUClass {
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/*< private >*/
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CPUClass parent_class;
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/*< public >*/
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DeviceRealize parent_realize;
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void (*parent_reset)(CPUState *cpu);
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} ARMCPUClass;
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/**
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* ARMCPU:
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* @env: #CPUARMState
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*
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* An ARM CPU core.
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*/
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typedef struct ARMCPU {
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/*< private >*/
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CPUState parent_obj;
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/*< public >*/
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CPUARMState env;
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/* Coprocessor information */
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GHashTable *cp_regs;
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/* For marshalling (mostly coprocessor) register state between the
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* kernel and QEMU (for KVM) and between two QEMUs (for migration),
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* we use these arrays.
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*/
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/* List of register indexes managed via these arrays; (full KVM style
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* 64 bit indexes, not CPRegInfo 32 bit indexes)
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*/
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uint64_t *cpreg_indexes;
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/* Values of the registers (cpreg_indexes[i]'s value is cpreg_values[i]) */
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uint64_t *cpreg_values;
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/* Length of the indexes, values, reset_values arrays */
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int32_t cpreg_array_len;
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/* These are used only for migration: incoming data arrives in
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* these fields and is sanity checked in post_load before copying
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* to the working data structures above.
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*/
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uint64_t *cpreg_vmstate_indexes;
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uint64_t *cpreg_vmstate_values;
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int32_t cpreg_vmstate_array_len;
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/* Timers used by the generic (architected) timer */
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QEMUTimer *gt_timer[NUM_GTIMERS];
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/* GPIO outputs for generic timer */
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qemu_irq gt_timer_outputs[NUM_GTIMERS];
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/* 'compatible' string for this CPU for Linux device trees */
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const char *dtb_compatible;
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/* PSCI version for this CPU
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* Bits[31:16] = Major Version
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* Bits[15:0] = Minor Version
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*/
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uint32_t psci_version;
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/* Should CPU start in PSCI powered-off state? */
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bool start_powered_off;
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/* CPU currently in PSCI powered-off state */
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bool powered_off;
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/* PSCI conduit used to invoke PSCI methods
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* 0 - disabled, 1 - smc, 2 - hvc
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*/
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uint32_t psci_conduit;
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/* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or
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* QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type.
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*/
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uint32_t kvm_target;
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/* KVM init features for this CPU */
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uint32_t kvm_init_features[7];
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/* The instance init functions for implementation-specific subclasses
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* set these fields to specify the implementation-dependent values of
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* various constant registers and reset values of non-constant
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* registers.
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* Some of these might become QOM properties eventually.
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* Field names match the official register names as defined in the
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* ARMv7AR ARM Architecture Reference Manual. A reset_ prefix
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* is used for reset values of non-constant registers; no reset_
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* prefix means a constant register.
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*/
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uint32_t midr;
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uint32_t reset_fpsid;
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uint32_t mvfr0;
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uint32_t mvfr1;
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uint32_t mvfr2;
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uint32_t ctr;
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uint32_t reset_sctlr;
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uint32_t id_pfr0;
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uint32_t id_pfr1;
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uint32_t id_dfr0;
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uint32_t id_afr0;
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uint32_t id_mmfr0;
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uint32_t id_mmfr1;
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uint32_t id_mmfr2;
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uint32_t id_mmfr3;
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uint32_t id_isar0;
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uint32_t id_isar1;
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uint32_t id_isar2;
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uint32_t id_isar3;
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uint32_t id_isar4;
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uint32_t id_isar5;
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uint64_t id_aa64pfr0;
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uint64_t id_aa64pfr1;
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uint64_t id_aa64dfr0;
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uint64_t id_aa64dfr1;
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uint64_t id_aa64afr0;
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uint64_t id_aa64afr1;
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uint64_t id_aa64isar0;
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uint64_t id_aa64isar1;
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uint64_t id_aa64mmfr0;
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uint64_t id_aa64mmfr1;
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uint32_t dbgdidr;
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uint32_t clidr;
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/* The elements of this array are the CCSIDR values for each cache,
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* in the order L1DCache, L1ICache, L2DCache, L2ICache, etc.
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*/
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uint32_t ccsidr[16];
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uint64_t reset_cbar;
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uint32_t reset_auxcr;
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bool reset_hivecs;
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/* DCZ blocksize, in log_2(words), ie low 4 bits of DCZID_EL0 */
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uint32_t dcz_blocksize;
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uint64_t rvbar;
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} ARMCPU;
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#define TYPE_AARCH64_CPU "aarch64-cpu"
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#define AARCH64_CPU_CLASS(klass) \
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OBJECT_CLASS_CHECK(AArch64CPUClass, (klass), TYPE_AARCH64_CPU)
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#define AARCH64_CPU_GET_CLASS(obj) \
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OBJECT_GET_CLASS(AArch64CPUClass, (obj), TYPE_AArch64_CPU)
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typedef struct AArch64CPUClass {
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/*< private >*/
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ARMCPUClass parent_class;
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/*< public >*/
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} AArch64CPUClass;
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static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
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{
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return container_of(env, ARMCPU, env);
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}
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#define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e))
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#define ENV_OFFSET offsetof(ARMCPU, env)
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#ifndef CONFIG_USER_ONLY
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extern const struct VMStateDescription vmstate_arm_cpu;
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#endif
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void register_cp_regs_for_features(ARMCPU *cpu);
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void init_cpreg_list(ARMCPU *cpu);
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void arm_cpu_do_interrupt(CPUState *cpu);
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void arm_v7m_cpu_do_interrupt(CPUState *cpu);
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bool arm_cpu_exec_interrupt(CPUState *cpu, int int_req);
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void arm_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
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int flags);
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hwaddr arm_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
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int arm_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
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int arm_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
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/* Callback functions for the generic timer's timers. */
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void arm_gt_ptimer_cb(void *opaque);
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void arm_gt_vtimer_cb(void *opaque);
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#ifdef TARGET_AARCH64
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int aarch64_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
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int aarch64_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
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void aarch64_cpu_do_interrupt(CPUState *cs);
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#endif
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#endif
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