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https://github.com/projectacrn/acrn-hypervisor.git
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153e83a19e
Create multiboot_pri.h and move the relevant declarations into this file. Tracked-On: #5661 Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
102 lines
1.8 KiB
C
102 lines
1.8 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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#ifndef MULTIBOOT_PRIV_H
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#define MULTIBOOT_PRIV_H
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#ifdef CONFIG_MULTIBOOT2
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#include <multiboot2.h>
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struct multiboot2_mmap_entry
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{
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uint64_t addr;
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uint64_t len;
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uint32_t type;
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uint32_t zero;
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};
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struct multiboot2_tag
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{
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uint32_t type;
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uint32_t size;
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};
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struct multiboot2_tag_string
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{
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uint32_t type;
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uint32_t size;
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char string[0];
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};
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struct multiboot2_tag_module
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{
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uint32_t type;
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uint32_t size;
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uint32_t mod_start;
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uint32_t mod_end;
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char cmdline[0];
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};
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struct multiboot2_tag_mmap
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{
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uint32_t type;
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uint32_t size;
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uint32_t entry_size;
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uint32_t entry_version;
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struct multiboot2_mmap_entry entries[0];
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};
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struct multiboot2_tag_new_acpi
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{
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uint32_t type;
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uint32_t size;
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uint8_t rsdp[0];
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};
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struct multiboot2_tag_efi64
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{
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uint32_t type;
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uint32_t size;
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uint64_t pointer;
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};
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struct multiboot2_tag_efi_mmap
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{
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uint32_t type;
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uint32_t size;
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uint32_t descr_size;
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uint32_t descr_vers;
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uint8_t efi_mmap[0];
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};
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/*
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* @post boot_regs[1] stores the address pointer that point to a valid multiboot2 info
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*/
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static inline bool boot_from_multiboot2(void)
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{
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/*
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* Multiboot spec states that the Multiboot information structure may be placed
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* anywhere in memory by the boot loader.
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*
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* Seems both SBL and GRUB won't place multiboot1 MBI structure at 0 address,
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* but GRUB could place Multiboot2 MBI structure at 0 address until commit
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* 0f3f5b7c13fa9b67 ("multiboot2: Set min address for mbi allocation to 0x1000")
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* which dates on Dec 26 2019.
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*/
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return (boot_regs[0] == MULTIBOOT2_INFO_MAGIC);
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}
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int32_t multiboot2_to_acrn_mbi(struct acrn_multiboot_info *mbi, void *mb2_info);
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#endif
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static inline bool boot_from_multiboot1(void)
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{
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return ((boot_regs[0] == MULTIBOOT_INFO_MAGIC) && (boot_regs[1] != 0U));
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}
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#endif /* MULTIBOOT_PRIV_H */
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