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62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
#ifndef _BOOTLOADER_H
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#define _BOOTLOADER_H
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#include <kernel.h>
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// Boot protocols
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#define BOOT_UNKNOWN 0 // Unknown
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#define BOOT_MB1 1 // MultiBoot 1
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#define BOOT_MB2 2 // MultiBoot 2
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#define BOOT_LIMINE 3 // Limine
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// Memmap region types
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#define BOOT_MMAP_AVAILABLE 1
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#define BOOT_MMAP_RESERVED 2
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#define BOOT_MMAP_ACPI_RECLAIM 3
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#define BOOT_MMAP_NVS 4
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#define BOOT_MMAP_BADRAM 5
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#define BOOT_MAX_MMAP_ENTRIES 128
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// A memory map entry
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struct boot_memmap {
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uint64_t base; // Memory region address
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uint64_t size; // Memory region length
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uint8_t type; // Memory region type
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} __packed;
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/*
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* Some values may not be provided by the bootloader, in this case
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* pointers will be NULL and integer values will be 0 if applicable.
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* Some unprovided values may also be implied. Eg.:
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* If 'memmap = NULL' then 'memmap_size' doesn't matter.
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*/
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struct boot_info {
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uint32_t mem_lower;
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uint32_t mem_upper;
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uint8_t boot_drive;
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uint8_t boot_part1;
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uint8_t boot_part2;
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uint8_t boot_part3;
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struct boot_memmap* memmap;
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size_t memmap_size;
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char* cmdline;
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char* bootname;
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} __packed;
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extern struct boot_info bootloader;
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/*
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* This functions arguments depend on the boot protocol provided.
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* This is the reason for the varargs thing. It runs on of the functions
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* defined after it.
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*/
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int boot_init(int type, ...);
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int boot_init_mb1(void* ptr, uint32_t magic);
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// TODO:
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// int boot_init_mb2(...);
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// int boot_init_limine(...);
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#endif
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