mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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484d3ec9df
The name of mi_cmdline in acrn_boot_info structure would cause confusion with mi_cmdline in multiboot_info structure, rename it to cmdline. At the same time, the data type is changed from pointer to array to avoid accessing the original multiboot info region which might be used by other software modules. Tracked-On: #5661 Signed-off-by: Victor Sun <victor.sun@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/*
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* Copyright (C) 2020 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 <types.h>
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#include <errno.h>
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#include <asm/pgtable.h>
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#include <boot.h>
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#include "multiboot_priv.h"
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/**
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* @pre abi != NULL
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*/
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int32_t multiboot_to_acrn_bi(struct acrn_boot_info *abi, void *mb_info) {
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struct multiboot_info *mbi = (struct multiboot_info *)(hpa2hva_early((uint64_t)mb_info));
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struct multiboot_mmap *mmap = (struct multiboot_mmap *)hpa2hva_early((uint64_t)mbi->mi_mmap_addr);
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struct multiboot_module *mods = (struct multiboot_module *)hpa2hva_early((uint64_t)mbi->mi_mods_addr);
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(void)strncpy_s((void *)(abi->cmdline), MAX_BOOTARGS_SIZE, (char *)hpa2hva_early((uint64_t)mbi->mi_cmdline),
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strnlen_s((char *)hpa2hva_early((uint64_t)mbi->mi_cmdline), (MAX_BOOTARGS_SIZE - 1U)));
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abi->mi_loader_name = (char *)hpa2hva_early((uint64_t)mbi->mi_loader_name);
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abi->mi_mmap_entries = mbi->mi_mmap_length / sizeof(struct multiboot_mmap);
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abi->mi_mods_count = mbi->mi_mods_count;
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if (((mbi->mi_flags & MULTIBOOT_INFO_HAS_MMAP) != 0U) && (abi->mi_mmap_entries != 0U) && (mmap != NULL)) {
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if (abi->mi_mmap_entries > MAX_MMAP_ENTRIES) {
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abi->mi_mmap_entries = MAX_MMAP_ENTRIES;
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}
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(void)memcpy_s((void *)(&abi->mi_mmap_entry[0]),
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(abi->mi_mmap_entries * sizeof(struct multiboot_mmap)),
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mmap, (abi->mi_mmap_entries * sizeof(struct multiboot_mmap)));
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} else {
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abi->mi_mmap_entries = 0U;
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}
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if (((mbi->mi_flags & MULTIBOOT_INFO_HAS_MODS) != 0U) && (abi->mi_mods_count != 0U) && (mods != NULL)) {
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if (abi->mi_mods_count > MAX_MODULE_NUM) {
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abi->mi_mods_count = MAX_MODULE_NUM;
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}
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(void)memcpy_s((void *)(&abi->mi_mods[0]),
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(abi->mi_mods_count * sizeof(struct multiboot_module)),
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mods, (abi->mi_mods_count * sizeof(struct multiboot_module)));
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} else {
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abi->mi_mods_count = 0U;
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}
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return 0;
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}
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int32_t init_multiboot_info(uint32_t *registers)
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{
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int32_t ret = -ENODEV;
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uint32_t magic = registers[0];
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uint32_t info = registers[1];
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struct acrn_boot_info *abi = get_acrn_boot_info();
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if (boot_from_multiboot(magic, info)) {
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if (multiboot_to_acrn_bi(abi, hpa2hva_early((uint64_t)info)) == 0) {
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strncpy_s(abi->protocol_name, MAX_PROTOCOL_NAME_SIZE,
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"Multiboot", (MAX_PROTOCOL_NAME_SIZE - 1U));
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ret = 0;
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}
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#ifdef CONFIG_MULTIBOOT2
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} else if (boot_from_multiboot2(magic)) {
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if (multiboot2_to_acrn_bi(abi, hpa2hva_early((uint64_t)info)) == 0) {
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strncpy_s(abi->protocol_name, MAX_PROTOCOL_NAME_SIZE,
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"Multiboot2", (MAX_PROTOCOL_NAME_SIZE - 1U));
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ret = 0;
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}
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#endif
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}
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return ret;
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}
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