90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/*
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* Copyright (C) 2019 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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/* this is for UEFI platform */
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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 <firmware_uefi.h>
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static struct uefi_context uefi_ctx;
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static struct lapic_regs uefi_lapic_regs;
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static void uefi_init(void)
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{
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static bool uefi_initialized = false;
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struct multiboot_info *mbi = NULL;
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if (!uefi_initialized) {
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parse_hv_cmdline();
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mbi = (struct multiboot_info *) hpa2hva(((uint64_t)(uint32_t)boot_regs[1]));
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_DRIVES) == 0U) {
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pr_err("no multiboot drivers for uefi found");
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} else {
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memcpy_s(&uefi_ctx, sizeof(struct uefi_context), hpa2hva((uint64_t)mbi->mi_drives_addr),
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sizeof(struct uefi_context));
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save_lapic(&uefi_lapic_regs);
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}
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uefi_initialized = true;
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}
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}
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const struct uefi_context *get_uefi_ctx(void)
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{
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uefi_init();
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return &uefi_ctx;
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}
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const struct lapic_regs *get_uefi_lapic_regs(void)
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{
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uefi_init();
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return &uefi_lapic_regs;
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}
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static uint64_t uefi_get_ap_trampoline(void)
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{
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return (uint64_t)(uefi_ctx.ap_trampoline_buf);
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}
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static void* uefi_get_rsdp(void)
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{
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return hpa2hva((uint64_t)(uefi_ctx.rsdp));
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}
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static void uefi_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 void uefi_init_irq(void)
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{
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spurious_handler = (spurious_handler_t)uefi_spurious_handler;
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/* we defer irq enabling till vlapic is ready */
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}
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static struct firmware_operations firmware_uefi_ops = {
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.init = uefi_init,
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.get_ap_trampoline = uefi_get_ap_trampoline,
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.get_rsdp = uefi_get_rsdp,
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.init_irq = uefi_init_irq,
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.init_vm_boot_info = uefi_init_vm_boot_info,
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};
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struct firmware_operations* uefi_get_firmware_operations(void)
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{
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return &firmware_uefi_ops;
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}
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