51 lines
1.3 KiB
C
51 lines
1.3 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 <types.h>
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#include <cpu.h>
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#include <per_cpu.h>
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#include <guest/vm.h>
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#include <boot_context.h>
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#include <firmware_uefi.h>
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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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/* get primary vcpu */
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struct acrn_vcpu *vcpu = vcpu_from_vid(vm, BOOT_CPU_ID);
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struct acrn_vcpu_regs *vcpu_regs = &boot_context;
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const struct uefi_context *uefi_ctx = get_uefi_ctx();
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const struct lapic_regs *uefi_lapic_regs = get_uefi_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 uefi_boot: gpregs, rip
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* 2. saved when HV started: other registers
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* We copy the info saved in uefi_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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&(uefi_ctx->vcpu_regs.gprs), sizeof(struct acrn_gp_regs));
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vcpu_regs->rip = uefi_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 uefi_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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return 0;
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}
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