mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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33e1149b29
In current code, VM0 BSP start mode is hardcoded, in this patch VM0 BSP start mode is decided by the boot context prepared by bootloader/BIOS. In current code, VM0 BSP VMCS is override only on UEFI platform. In this patch, VM0 BSP VMCS is override on both SBL & UEFI platforms. Also restructure the code of guest init code. In this patch, a vcpu run_context is initilaized first according to vcpu mode. Then write the value to vmcs according to run_context value. Signed-off-by: Binbin Wu <binbin.wu@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
124 lines
2.5 KiB
C
124 lines
2.5 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 <vm0_boot.h>
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/* IOAPIC id */
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#define UEFI_IOAPIC_ID 8
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/* IOAPIC base address */
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#define UEFI_IOAPIC_ADDR 0xfec00000
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/* IOAPIC range size */
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#define UEFI_IOAPIC_SIZE 0x100000
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/* Local APIC base address */
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#define UEFI_LAPIC_ADDR 0xfee00000
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/* Local APIC range size */
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#define UEFI_LAPIC_SIZE 0x100000
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/* Number of PCI IRQ assignments */
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#define UEFI_PCI_IRQ_ASSIGNMENT_NUM 28
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#ifdef CONFIG_EFI_STUB
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static void efi_init(void);
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struct boot_ctx* efi_ctx = NULL;
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struct lapic_regs uefi_lapic_regs;
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static int efi_initialized;
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void efi_spurious_handler(int vector)
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{
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struct vcpu* vcpu;
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int ret;
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if (get_cpu_id() != 0)
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return;
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vcpu = per_cpu(vcpu, 0);
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if ((vcpu != NULL) && vcpu->arch_vcpu.vlapic) {
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ret = vlapic_set_intr(vcpu, vector, 0);
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if (ret != 0)
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pr_err("%s vlapic set intr fail, interrupt lost\n",
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__func__);
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} else
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pr_err("%s vcpu or vlapic is not ready, interrupt lost\n",
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__func__);
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return;
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}
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int uefi_sw_loader(struct vm *vm, struct vcpu *vcpu)
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{
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int ret = 0;
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struct run_context *cur_context =
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&vcpu->arch_vcpu.contexts[vcpu->arch_vcpu.cur_context].run_ctx;
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ASSERT(vm != NULL, "Incorrect argument");
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pr_dbg("Loading guest to run-time location");
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if (!is_vm0(vm))
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return load_guest(vm, vcpu);
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vlapic_restore(vcpu->arch_vcpu.vlapic, &uefi_lapic_regs);
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vcpu->entry_addr = (void *)efi_ctx->rip;
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memcpy_s(&cur_context->guest_cpu_regs, sizeof(struct cpu_gp_regs),
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&efi_ctx->gprs, sizeof(struct cpu_gp_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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void *get_rsdp_from_uefi(void)
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{
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if (!efi_initialized)
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efi_init();
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return HPA2HVA(efi_ctx->rsdp);
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}
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void *get_ap_trampoline_buf(void)
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{
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return efi_ctx->ap_trampoline_buf;
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}
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static void efi_init(void)
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{
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struct multiboot_info *mbi = NULL;
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if (boot_regs[0] != MULTIBOOT_INFO_MAGIC)
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ASSERT(0, "no multiboot info found");
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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))
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ASSERT(0, "no multiboot drivers for uefi found");
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efi_ctx = (struct boot_ctx *)HPA2HVA((uint64_t)mbi->mi_drives_addr);
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ASSERT(efi_ctx != NULL, "no uefi context found");
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vm_sw_loader = uefi_sw_loader;
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spurious_handler = efi_spurious_handler;
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save_lapic(&uefi_lapic_regs);
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efi_initialized = 1;
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}
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#endif
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void init_bsp(void)
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{
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parse_hv_cmdline();
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#ifdef CONFIG_EFI_STUB
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if (!efi_initialized)
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efi_init();
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#endif
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}
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