mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-03 14:06:54 +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
/*
|
|
* Copyright (C) 2019 Intel Corporation. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
/* this is for de-privilege guest vboot method */
|
|
|
|
#include <types.h>
|
|
#include <acrn_common.h>
|
|
#include <pgtable.h>
|
|
#include <logmsg.h>
|
|
#include <rtl.h>
|
|
#include <vlapic.h>
|
|
#include <lapic.h>
|
|
#include <per_cpu.h>
|
|
#include <guest/vm.h>
|
|
#include <boot.h>
|
|
#include <deprivilege_boot.h>
|
|
|
|
static struct depri_boot_context depri_boot_ctx;
|
|
static struct lapic_regs depri_boot_lapic_regs;
|
|
|
|
static void init_depri_boot(void)
|
|
{
|
|
static bool depri_initialized = false;
|
|
struct acrn_multiboot_info *mbi = get_multiboot_info();
|
|
|
|
if (!depri_initialized) {
|
|
if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_DRIVES) == 0U) {
|
|
pr_err("no multiboot drivers for depri_boot found");
|
|
} else {
|
|
(void)memcpy_s(&depri_boot_ctx, sizeof(struct depri_boot_context),
|
|
hpa2hva((uint64_t)mbi->mi_drives_addr),
|
|
sizeof(struct depri_boot_context));
|
|
save_lapic(&depri_boot_lapic_regs);
|
|
}
|
|
depri_initialized = true;
|
|
}
|
|
}
|
|
|
|
const struct depri_boot_context *get_depri_boot_ctx(void)
|
|
{
|
|
return &depri_boot_ctx;
|
|
}
|
|
|
|
const struct lapic_regs *get_depri_boot_lapic_regs(void)
|
|
{
|
|
return &depri_boot_lapic_regs;
|
|
}
|
|
|
|
static uint64_t get_depri_boot_ap_trampoline(void)
|
|
{
|
|
return depri_boot_ctx.ap_trampoline_buf;
|
|
}
|
|
|
|
static void* get_depri_boot_rsdp(void)
|
|
{
|
|
return hpa2hva((uint64_t)(depri_boot_ctx.rsdp));
|
|
}
|
|
|
|
static void init_depri_boot_irq(void)
|
|
{
|
|
/* nothing to do for now */
|
|
}
|
|
|
|
static struct vboot_operations depri_boot_ops = {
|
|
.init = init_depri_boot,
|
|
.get_ap_trampoline = get_depri_boot_ap_trampoline,
|
|
.get_rsdp = get_depri_boot_rsdp,
|
|
.init_irq = init_depri_boot_irq,
|
|
};
|
|
|
|
struct vboot_operations* get_deprivilege_boot_ops(void)
|
|
{
|
|
return &depri_boot_ops;
|
|
}
|