62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <hypervisor.h>
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#include <multiboot.h>
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#include <boot_context.h>
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#include <uefi.h>
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static void efi_spurious_handler(int32_t vector)
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{
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if (get_cpu_id() == BOOT_CPU_ID) {
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struct acrn_vcpu *vcpu = per_cpu(vcpu, BOOT_CPU_ID);
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if (vcpu != NULL) {
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vlapic_set_intr(vcpu, vector, LAPIC_TRIG_EDGE);
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} else {
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pr_err("%s vcpu or vlapic is not ready, interrupt lost\n", __func__);
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}
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}
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}
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static int32_t uefi_sw_loader(struct acrn_vm *vm)
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{
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int32_t ret = 0;
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struct acrn_vcpu *vcpu = get_primary_vcpu(vm);
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struct acrn_vcpu_regs *vcpu_regs = &boot_context;
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const struct efi_context *efi_ctx = get_efi_ctx();
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const struct lapic_regs *uefi_lapic_regs = get_efi_lapic_regs();
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pr_dbg("Loading guest to run-time location");
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vlapic_restore(vcpu_vlapic(vcpu), uefi_lapic_regs);
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/* For UEFI platform, the bsp init regs come from two places:
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* 1. saved in efi_boot: gpregs, rip
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* 2. saved when HV started: other registers
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* We copy the info saved in efi_boot to boot_context and
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* init bsp with boot_context.
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*/
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memcpy_s(&(vcpu_regs->gprs), sizeof(struct acrn_gp_regs),
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&(efi_ctx->vcpu_regs.gprs), sizeof(struct acrn_gp_regs));
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vcpu_regs->rip = efi_ctx->vcpu_regs.rip;
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set_vcpu_regs(vcpu, vcpu_regs);
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/* defer irq enabling till vlapic is ready */
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CPU_IRQ_ENABLE();
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return ret;
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}
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int32_t init_vm_boot_info(__unused struct acrn_vm *vm)
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{
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vm_sw_loader = uefi_sw_loader;
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spurious_handler = (spurious_handler_t)efi_spurious_handler;
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return 0;
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}
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