mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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99586e32cc
For data structure types "struct vm", its name is identical with variable name in the same scope. This is a MISRA C violation. Naming convention rule:If the data structure type is used by multi modules, its corresponding logic resource is exposed to external components (such as SOS, UOS), and its name meaning is simplistic (such as vcpu, vm), its name needs prefix "acrn_". The following udpates are made: struct vm *vm-->struct acrn_vm *vm Tracked-On: #861 Signed-off-by: Xiangyang Wu <xiangyang.wu@linux.intel.com>
120 lines
2.5 KiB
C
120 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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#ifdef CONFIG_EFI_STUB
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static void efi_init(void);
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struct efi_context* 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 acrn_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) {
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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 acrn_vm *vm)
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{
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int ret = 0;
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struct acrn_vcpu *vcpu = get_primary_vcpu(vm);
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struct acrn_vcpu_regs *vcpu_regs = &vm0_boot_context;
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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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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 vm0_boot_context and
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* init bsp with vm0_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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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((uint64_t)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 *)
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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 efi_context *)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 = (spurious_handler_t)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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#ifndef CONFIG_CONSTANT_ACPI
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acpi_fixup();
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#endif
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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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