mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-02 21:46:58 +00:00
19ffaa50dc
Initialize and sanitize a acrn specific multiboot info struct with current supported multiboot1 in very early boot stage, which would bring below benifits: - don't need to do hpa2hva convention every time when refering boot_regs; - panic early if failed to sanitize multiboot info, so that don't need to check multiboot info pointer/flags and panic in later boot process; - keep most code unchanged when introduce multiboot2 support in future; Tracked-On: #4419 Signed-off-by: Victor Sun <victor.sun@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
78 lines
1.7 KiB
C
78 lines
1.7 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 de-privilege guest vboot method */
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#include <types.h>
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#include <acrn_common.h>
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#include <pgtable.h>
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#include <logmsg.h>
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#include <rtl.h>
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#include <vlapic.h>
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#include <lapic.h>
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#include <per_cpu.h>
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#include <guest/vm.h>
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#include <boot.h>
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#include <deprivilege_boot.h>
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static struct depri_boot_context depri_boot_ctx;
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static struct lapic_regs depri_boot_lapic_regs;
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static void init_depri_boot(void)
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{
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static bool depri_initialized = false;
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struct acrn_multiboot_info *mbi = get_multiboot_info();
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if (!depri_initialized) {
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_DRIVES) == 0U) {
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pr_err("no multiboot drivers for depri_boot found");
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} else {
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(void)memcpy_s(&depri_boot_ctx, sizeof(struct depri_boot_context),
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hpa2hva((uint64_t)mbi->mi_drives_addr),
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sizeof(struct depri_boot_context));
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save_lapic(&depri_boot_lapic_regs);
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}
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depri_initialized = true;
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}
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}
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const struct depri_boot_context *get_depri_boot_ctx(void)
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{
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return &depri_boot_ctx;
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}
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const struct lapic_regs *get_depri_boot_lapic_regs(void)
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{
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return &depri_boot_lapic_regs;
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}
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static uint64_t get_depri_boot_ap_trampoline(void)
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{
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return depri_boot_ctx.ap_trampoline_buf;
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}
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static void* get_depri_boot_rsdp(void)
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{
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return hpa2hva((uint64_t)(depri_boot_ctx.rsdp));
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}
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static void init_depri_boot_irq(void)
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{
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/* nothing to do for now */
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}
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static struct vboot_operations depri_boot_ops = {
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.init = init_depri_boot,
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.get_ap_trampoline = get_depri_boot_ap_trampoline,
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.get_rsdp = get_depri_boot_rsdp,
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.init_irq = init_depri_boot_irq,
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};
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struct vboot_operations* get_deprivilege_boot_ops(void)
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{
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return &depri_boot_ops;
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}
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