diff --git a/kernel/multiboot.h b/kernel/multiboot.h new file mode 100644 index 0000000..9d7fc53 --- /dev/null +++ b/kernel/multiboot.h @@ -0,0 +1,274 @@ +/* multiboot.h - Multiboot header file. */ +/* Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc. +* +* Permission is hereby granted, free of charge, to any person obtaining a copy +* of this software and associated documentation files (the "Software"), to +* deal in the Software without restriction, including without limitation the +* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +* sell copies of the Software, and to permit persons to whom the Software is +* furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in +* all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY +* DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + + #ifndef MULTIBOOT_HEADER + #define MULTIBOOT_HEADER 1 + + /* How many bytes from the start of the file we search for the header. */ + #define MULTIBOOT_SEARCH 8192 + #define MULTIBOOT_HEADER_ALIGN 4 + + /* The magic field should contain this. */ + #define MULTIBOOT_HEADER_MAGIC 0x1BADB002 + + /* This should be in %eax. */ + #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 + + /* Alignment of multiboot modules. */ + #define MULTIBOOT_MOD_ALIGN 0x00001000 + + /* Alignment of the multiboot info structure. */ + #define MULTIBOOT_INFO_ALIGN 0x00000004 + + /* Flags set in the 'flags' member of the multiboot header. */ + + /* Align all boot modules on i386 page (4KB) boundaries. */ + #define MULTIBOOT_PAGE_ALIGN 0x00000001 + + /* Must pass memory information to OS. */ + #define MULTIBOOT_MEMORY_INFO 0x00000002 + + /* Must pass video information to OS. */ + #define MULTIBOOT_VIDEO_MODE 0x00000004 + + /* This flag indicates the use of the address fields in the header. */ + #define MULTIBOOT_AOUT_KLUDGE 0x00010000 + + /* Flags to be set in the 'flags' member of the multiboot info structure. */ + + /* is there basic lower/upper memory information? */ + #define MULTIBOOT_INFO_MEMORY 0x00000001 + /* is there a boot device set? */ + #define MULTIBOOT_INFO_BOOTDEV 0x00000002 + /* is the command-line defined? */ + #define MULTIBOOT_INFO_CMDLINE 0x00000004 + /* are there modules to do something with? */ + #define MULTIBOOT_INFO_MODS 0x00000008 + + /* These next two are mutually exclusive */ + + /* is there a symbol table loaded? */ + #define MULTIBOOT_INFO_AOUT_SYMS 0x00000010 + /* is there an ELF section header table? */ + #define MULTIBOOT_INFO_ELF_SHDR 0X00000020 + + /* is there a full memory map? */ + #define MULTIBOOT_INFO_MEM_MAP 0x00000040 + + /* Is there drive info? */ + #define MULTIBOOT_INFO_DRIVE_INFO 0x00000080 + + /* Is there a config table? */ + #define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100 + + /* Is there a boot loader name? */ + #define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200 + + /* Is there a APM table? */ + #define MULTIBOOT_INFO_APM_TABLE 0x00000400 + + /* Is there video information? */ + #define MULTIBOOT_INFO_VBE_INFO 0x00000800 + #define MULTIBOOT_INFO_FRAMEBUFFER_INFO 0x00001000 + + #ifndef ASM_FILE + + typedef unsigned char multiboot_uint8_t; + typedef unsigned short multiboot_uint16_t; + typedef unsigned int multiboot_uint32_t; + typedef unsigned long long multiboot_uint64_t; + + struct multiboot_header + { + /* Must be MULTIBOOT_MAGIC - see above. */ + multiboot_uint32_t magic; + + /* Feature flags. */ + multiboot_uint32_t flags; + + /* The above fields plus this one must equal 0 mod 2^32. */ + multiboot_uint32_t checksum; + + /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */ + multiboot_uint32_t header_addr; + multiboot_uint32_t load_addr; + multiboot_uint32_t load_end_addr; + multiboot_uint32_t bss_end_addr; + multiboot_uint32_t entry_addr; + + /* These are only valid if MULTIBOOT_VIDEO_MODE is set. */ + multiboot_uint32_t mode_type; + multiboot_uint32_t width; + multiboot_uint32_t height; + multiboot_uint32_t depth; + }; + + /* The symbol table for a.out. */ + struct multiboot_aout_symbol_table + { + multiboot_uint32_t tabsize; + multiboot_uint32_t strsize; + multiboot_uint32_t addr; + multiboot_uint32_t reserved; + }; + typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t; + + /* The section header table for ELF. */ + struct multiboot_elf_section_header_table + { + multiboot_uint32_t num; + multiboot_uint32_t size; + multiboot_uint32_t addr; + multiboot_uint32_t shndx; + }; + typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t; + + struct multiboot_info + { + /* Multiboot info version number */ + multiboot_uint32_t flags; + + /* Available memory from BIOS */ + multiboot_uint32_t mem_lower; + multiboot_uint32_t mem_upper; + + /* "root" partition */ + multiboot_uint32_t boot_device; + + /* Kernel command line */ + multiboot_uint32_t cmdline; + + /* Boot-Module list */ + multiboot_uint32_t mods_count; + multiboot_uint32_t mods_addr; + + union + { + multiboot_aout_symbol_table_t aout_sym; + multiboot_elf_section_header_table_t elf_sec; + } u; + + /* Memory Mapping buffer */ + multiboot_uint32_t mmap_length; + multiboot_uint32_t mmap_addr; + + /* Drive Info buffer */ + multiboot_uint32_t drives_length; + multiboot_uint32_t drives_addr; + + /* ROM configuration table */ + multiboot_uint32_t config_table; + + /* Boot Loader Name */ + multiboot_uint32_t boot_loader_name; + + /* APM table */ + multiboot_uint32_t apm_table; + + /* Video */ + multiboot_uint32_t vbe_control_info; + multiboot_uint32_t vbe_mode_info; + multiboot_uint16_t vbe_mode; + multiboot_uint16_t vbe_interface_seg; + multiboot_uint16_t vbe_interface_off; + multiboot_uint16_t vbe_interface_len; + + multiboot_uint64_t framebuffer_addr; + multiboot_uint32_t framebuffer_pitch; + multiboot_uint32_t framebuffer_width; + multiboot_uint32_t framebuffer_height; + multiboot_uint8_t framebuffer_bpp; + #define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0 + #define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1 + #define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2 + multiboot_uint8_t framebuffer_type; + union + { + struct + { + multiboot_uint32_t framebuffer_palette_addr; + multiboot_uint16_t framebuffer_palette_num_colors; + }; + struct + { + multiboot_uint8_t framebuffer_red_field_position; + multiboot_uint8_t framebuffer_red_mask_size; + multiboot_uint8_t framebuffer_green_field_position; + multiboot_uint8_t framebuffer_green_mask_size; + multiboot_uint8_t framebuffer_blue_field_position; + multiboot_uint8_t framebuffer_blue_mask_size; + }; + }; + }; + typedef struct multiboot_info multiboot_info_t; + + struct multiboot_color + { + multiboot_uint8_t red; + multiboot_uint8_t green; + multiboot_uint8_t blue; + }; + + struct multiboot_mmap_entry + { + multiboot_uint32_t size; + multiboot_uint64_t addr; + multiboot_uint64_t len; + #define MULTIBOOT_MEMORY_AVAILABLE 1 + #define MULTIBOOT_MEMORY_RESERVED 2 + #define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3 + #define MULTIBOOT_MEMORY_NVS 4 + #define MULTIBOOT_MEMORY_BADRAM 5 + multiboot_uint32_t type; + } __attribute__((packed)); + typedef struct multiboot_mmap_entry multiboot_memory_map_t; + + struct multiboot_mod_list + { + /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ + multiboot_uint32_t mod_start; + multiboot_uint32_t mod_end; + + /* Module command line */ + multiboot_uint32_t cmdline; + + /* padding to take it to 16 bytes (must be zero) */ + multiboot_uint32_t pad; + }; + typedef struct multiboot_mod_list multiboot_module_t; + + /* APM BIOS info. */ + struct multiboot_apm_info + { + multiboot_uint16_t version; + multiboot_uint16_t cseg; + multiboot_uint32_t offset; + multiboot_uint16_t cseg_16; + multiboot_uint16_t dseg; + multiboot_uint16_t flags; + multiboot_uint16_t cseg_len; + multiboot_uint16_t cseg_16_len; + multiboot_uint16_t dseg_len; + }; + + #endif /* ! ASM_FILE */ + + #endif /* ! MULTIBOOT_HEADER */