mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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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>
45 lines
985 B
C
45 lines
985 B
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 BOOT_H_
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#define BOOT_H_
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#include <multiboot.h>
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#include <e820.h>
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#define MAX_BOOTARGS_SIZE 2048U
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#define MAX_MODULE_COUNT 4U
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struct acrn_multiboot_info {
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uint32_t mi_flags; /* the flags is back-compatible with multiboot1 */
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char *mi_cmdline;
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char *mi_loader_name;
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uint32_t mi_mods_count;
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struct multiboot_module mi_mods[MAX_MODULE_COUNT];
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uint32_t mi_drives_length;
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uint32_t mi_drives_addr;
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uint32_t mi_mmap_entries;
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struct multiboot_mmap mi_mmap_entry[E820_MAX_ENTRIES];
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};
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/* boot_regs store the multiboot info magic and address */
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extern uint32_t boot_regs[2];
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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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struct acrn_multiboot_info *get_multiboot_info(void);
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int32_t sanitize_multiboot_info(void);
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void parse_hv_cmdline(void);
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#endif /* BOOT_H_ */
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