df0ba02a38
keep in mind that GRUB needs to be patched to read MFS for now; use /boot/image_latest to boot the last compiled image in GRUB
137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
#ifndef __MULTIBOOT_H__
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#define __MULTIBOOT_H__
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#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
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#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
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/* Must pass memory information to OS. */
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#define MULTIBOOT_MEMORY_INFO 0x00000002
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#define MULTIBOOT_VIDEO_MODE 0x00000004
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#define MULTIBOOT_AOUT_KLUDGE 0x00010000
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#define MULTIBOOT_FLAGS (MULTIBOOT_MEMORY_INFO | \
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MULTIBOOT_VIDEO_MODE | \
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MULTIBOOT_AOUT_KLUDGE)
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/* consts used for Multiboot pre-init */
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#define MULTIBOOT_ENTRY_OFFSET 0x200
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#define MULTIBOOT_LOAD_ADDRESS 0x200000-MULTIBOOT_ENTRY_OFFSET
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#define MULTIBOOT_VIDEO_MODE_EGA 1
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#define MULTIBOOT_VIDEO_BUFFER 0xB8000
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/* Usable lower memory chunk has a upper bound */
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#define MULTIBOOT_LOWER_MEM_MAX 0x7f800
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#define MULTIBOOT_CONSOLE_LINES 25
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#define MULTIBOOT_CONSOLE_COLS 80
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#define MULTIBOOT_STACK_SIZE 4096
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#define MULTIBOOT_PARAM_BUF_SIZE 1024
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#define MULTIBOOT_KERNEL_a_text 0x48
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#define MULTIBOOT_KERNEL_a_data (0x48+4)
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#define MULTIBOOT_KERNEL_a_total (0x48+16)
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/* Flags to be set in the ’flags’ member of the multiboot info structure. */
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#define MULTIBOOT_INFO_MEMORY 0x00000001
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/* Is there a boot device set? */
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#define MULTIBOOT_INFO_BOOTDEV 0x00000002
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/* Is the command-line defined? */
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#define MULTIBOOT_INFO_CMDLINE 0x00000004
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/* Are there modules to do something with? */
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#define MULTIBOOT_INFO_MODS 0x00000008
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/* get physical address by data pointer*/
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#define PTR2PHY(ptr) (kernel_data_addr+(u32_t)(ptr))
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/* get data pointer by physical address*/
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#define PHY2PTR(phy) ((char *)((u32_t)(phy)-kernel_data_addr))
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/* Get physical address by function pointer*/
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#define FUNC2PHY(fun) (MULTIBOOT_LOAD_ADDRESS + MULTIBOOT_ENTRY_OFFSET + (u32_t)(fun))
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#ifndef __ASSEMBLY__
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#include <minix/types.h>
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/* The symbol table for a.out. */
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struct multiboot_aout_symbol_table
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{
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u32_t tabsize;
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u32_t strsize;
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u32_t addr;
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u32_t reserved;
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};
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/* The section header table for ELF. */
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struct multiboot_elf_section_header_table
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{
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u32_t num;
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u32_t size;
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u32_t addr;
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u32_t shndx;
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};
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typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
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typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
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struct multiboot_info
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{
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/* Multiboot info version number */
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u32_t flags;
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/* Available memory from BIOS */
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u32_t mem_lower;
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u32_t mem_upper;
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/* "root" partition */
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u32_t boot_device;
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/* Kernel command line */
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u32_t cmdline;
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/* Boot-Module list */
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u32_t mods_count;
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u32_t mods_addr;
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union
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{
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multiboot_aout_symbol_table_t aout_sym;
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multiboot_elf_section_header_table_t elf_sec;
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} u;
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/* Memory Mapping buffer */
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u32_t mmap_length;
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u32_t mmap_addr;
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/* Drive Info buffer */
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u32_t drives_length;
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u32_t drives_addr;
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/* ROM configuration table */
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u32_t config_table;
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/* Boot Loader Name */
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u32_t boot_loader_name;
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/* APM table */
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u32_t apm_table;
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/* Video */
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u32_t vbe_control_info;
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u32_t vbe_mode_info;
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u16_t vbe_mode;
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u16_t vbe_interface_seg;
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u16_t vbe_interface_off;
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u16_t vbe_interface_len;
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};
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typedef struct multiboot_info multiboot_info_t;
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/* Buffer for multiboot parameters */
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extern char multiboot_param_buf[];
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/* Physical address of kernel data segment */
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extern phys_bytes kernel_data_addr;
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#endif /* __ASSEMBLY__ */
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#endif /* __MULTIBOOT_H__ */
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