blob: 8896b77d0b033e37f7ede868e82949898a637a7a [file] [log] [blame]
/*
* Copyright 2018 The Hafnium Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "hf/cpu.h"
#include "hf/vm.h"
/**
* The entry point of CPUs when they are turned on. It is supposed to initialise
* all state and return the first vCPU to run.
*/
struct vcpu *cpu_main(struct cpu *c)
{
struct vcpu *vcpu;
struct vm *vm;
vcpu = vm_get_vcpu(vm_find(HF_PRIMARY_VM_ID), cpu_index(c));
vm = vcpu->vm;
vcpu->cpu = c;
arch_cpu_init();
/* Reset the registers to give a clean start for the primary's vCPU. */
arch_regs_reset(&vcpu->regs, true, vm->id, c->id, vm->ptable.root);
return vcpu;
}