37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/*
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* Copyright (C) 2020-2022 Intel Corporation.
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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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/*
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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(uint32_t magic)
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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 (magic == MULTIBOOT2_INFO_MAGIC);
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}
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int32_t multiboot2_to_acrn_bi(struct acrn_boot_info *abi, void *mb2_info);
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#endif
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static inline bool boot_from_multiboot(uint32_t magic, uint32_t info)
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{
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return ((magic == MULTIBOOT_INFO_MAGIC) && (info != 0U));
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}
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#endif /* MULTIBOOT_PRIV_H */
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