302 lines
8.5 KiB
C
302 lines
8.5 KiB
C
/**
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* \file
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*
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* \brief Multiboot info structure as defined by GRUB */
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/*
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* (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
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* Frank Mehnert <fm3@os.inf.tu-dresden.de>
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* economic rights: Technische Universität Dresden (Germany)
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* This file is part of TUD:OS and distributed under the terms of the
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* GNU Lesser General Public License 2.1.
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* Please see the COPYING-LGPL-2.1 file for details.
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*/
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#ifndef L4UTIL_MB_INFO_H
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#define L4UTIL_MB_INFO_H
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#ifndef __ASSEMBLY__
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#include <l4/sys/l4int.h>
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/**
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* \anchor struct_l4util_mod_list
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* The structure type "mod_list" is used by the
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* \ref struct_l4util_mb_info "multiboot_info" structure.
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*/
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typedef struct
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{
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l4_uint32_t mod_start; /**< Starting address of module in memory. */
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l4_uint32_t mod_end; /**< End address of module in memory. */
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l4_uint32_t cmdline; /**< Module command line */
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l4_uint32_t pad; /**< padding to take it to 16 bytes */
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} l4util_mb_mod_t;
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/**
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* INT-15, AX=E820 style "AddressRangeDescriptor"
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* ...with a "size" parameter on the front which is the structure size - 4,
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* pointing to the next one, up until the full buffer length of the memory
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* map has been reached.
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*/
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typedef struct __attribute__((packed))
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{
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l4_uint32_t struct_size; /** <Size of structure */
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l4_uint64_t addr; /** <Start address */
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l4_uint64_t size; /** <Size of memory range */
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l4_uint32_t type; /** <type of memory range */
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/* unspecified optional padding... */
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} l4util_mb_addr_range_t;
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#define l4util_mb_for_each_mmap_entry(i, mbi) \
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for (i = (l4util_mb_addr_range_t *)(unsigned long)mbi->mmap_addr; \
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(unsigned long)i < (unsigned long)mbi->mmap_addr + mbi->mmap_length; \
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i = (l4util_mb_addr_range_t *)((unsigned long)i + mmap->struct_size + sizeof (mmap->struct_size)))
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/** usable memory "Type", all others are reserved. */
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#define MB_ARD_MEMORY 1
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/**
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* Address Range Types (ART) from "Advanced Configuration and Power Interface
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* Specification" Rev3.0a (p. 390). Other values are undefined.
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*/
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#define MB_ART_MEMORY 1 /**< available, usable RAM */
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#define MB_ART_RESERVED 2 /**< in use or reserved by system */
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#define MB_ART_ACPI 3 /**< ACPI Reclaim Memory (RAM that contains
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ACPI tables) */
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#define MB_ART_NVS 4 /**< ACPI NVS Memory (must not be used by the OS */
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#define MB_ART_UNUSABLE 5 /**< memory in which errores have been detected */
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/** Drive Info structure. */
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typedef struct
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{
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l4_uint32_t size; /** <The size of this structure. */
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l4_uint8_t drive_number; /** <The BIOS drive number. */
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l4_uint8_t drive_mode; /** <The access mode (see below). */
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l4_uint16_t drive_cylinders; /** <number of cylinders */
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l4_uint8_t drive_heads; /** <number of heads */
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l4_uint8_t drive_sectors; /** <number of sectors per track */
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l4_uint16_t drive_ports[0]; /** <Array of I/O ports used for the drive. */
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} l4util_mb_drive_t;
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/* Drive Mode. */
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#define MB_DI_CHS_MODE 0
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#define MB_DI_LBA_MODE 1
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/** APM BIOS info. */
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typedef struct
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{
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l4_uint16_t version;
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l4_uint16_t cseg;
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l4_uint32_t offset;
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l4_uint16_t cseg_16;
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l4_uint16_t dseg_16;
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l4_uint16_t cseg_len;
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l4_uint16_t cseg_16_len;
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l4_uint16_t dseg_16_len;
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} l4util_mb_apm_t;
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/** VBE controller information. */
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typedef struct
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{
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l4_uint8_t signature[4];
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l4_uint16_t version;
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l4_uint32_t oem_string;
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l4_uint32_t capabilities;
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l4_uint32_t video_mode;
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l4_uint16_t total_memory;
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l4_uint16_t oem_software_rev;
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l4_uint32_t oem_vendor_name;
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l4_uint32_t oem_product_name;
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l4_uint32_t oem_product_rev;
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l4_uint8_t reserved[222];
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l4_uint8_t oem_data[256];
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} __attribute__((packed)) l4util_mb_vbe_ctrl_t;
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/** VBE mode information. */
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typedef struct
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{
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/** @name all VESA versions
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* @{ */
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l4_uint16_t mode_attributes;
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l4_uint8_t win_a_attributes;
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l4_uint8_t win_b_attributes;
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l4_uint16_t win_granularity;
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l4_uint16_t win_size;
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l4_uint16_t win_a_segment;
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l4_uint16_t win_b_segment;
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l4_uint32_t win_func;
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l4_uint16_t bytes_per_scanline;
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/** @} */
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/** @name >= VESA version 1.2
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* @{ */
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l4_uint16_t x_resolution;
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l4_uint16_t y_resolution;
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l4_uint8_t x_char_size;
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l4_uint8_t y_char_size;
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l4_uint8_t number_of_planes;
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l4_uint8_t bits_per_pixel;
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l4_uint8_t number_of_banks;
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l4_uint8_t memory_model;
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l4_uint8_t bank_size;
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l4_uint8_t number_of_image_pages;
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l4_uint8_t reserved0;
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/** @} */
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/** @name direct color
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* @{ */
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l4_uint8_t red_mask_size;
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l4_uint8_t red_field_position;
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l4_uint8_t green_mask_size;
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l4_uint8_t green_field_position;
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l4_uint8_t blue_mask_size;
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l4_uint8_t blue_field_position;
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l4_uint8_t reserved_mask_size;
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l4_uint8_t reserved_field_position;
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l4_uint8_t direct_color_mode_info;
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/** @} */
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/** @name >= VESA version 2.0
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* @{*/
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l4_uint32_t phys_base;
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l4_uint32_t reserved1;
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l4_uint16_t reversed2;
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/** @} */
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/** @name >= VESA version 3.0
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* @{*/
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l4_uint16_t linear_bytes_per_scanline;
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l4_uint8_t banked_number_of_image_pages;
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l4_uint8_t linear_number_of_image_pages;
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l4_uint8_t linear_red_mask_size;
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l4_uint8_t linear_red_field_position;
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l4_uint8_t linear_green_mask_size;
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l4_uint8_t linear_green_field_position;
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l4_uint8_t linear_blue_mask_size;
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l4_uint8_t linear_blue_field_position;
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l4_uint8_t linear_reserved_mask_size;
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l4_uint8_t linear_reserved_field_position;
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l4_uint32_t max_pixel_clock;
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/* The VBE spec says this structure should have a size of 256 bytes but
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* the described structure layout is only 255 bytes... */
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l4_uint8_t reserved3[189 + 1];
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/** @} */
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} __attribute__ ((packed)) l4util_mb_vbe_mode_t;
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/**
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* \anchor struct_l4util_mb_info
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* MultiBoot Info description
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*
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* This is the struct passed to the boot image. This is done by placing
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* its address in the EAX register.
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*/
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typedef struct
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{
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l4_uint32_t flags; /**< MultiBoot info version number */
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l4_uint32_t mem_lower; /**< available memory below 1MB */
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l4_uint32_t mem_upper; /**< available memory starting from 1MB [kB] */
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l4_uint32_t boot_device; /**< "root" partition */
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l4_uint32_t cmdline; /**< Kernel command line */
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l4_uint32_t mods_count; /**< number of modules */
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l4_uint32_t mods_addr; /**< module list */
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union
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{
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struct
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{
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/** (a.out) Kernel symbol table info */
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l4_uint32_t tabsize;
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l4_uint32_t strsize;
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l4_uint32_t addr;
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l4_uint32_t pad;
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}
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a;
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struct
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{
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/** (ELF) Kernel section header table */
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l4_uint32_t num;
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l4_uint32_t size;
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l4_uint32_t addr;
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l4_uint32_t shndx;
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}
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e;
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}
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syms;
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l4_uint32_t mmap_length; /**< size of memory mapping buffer */
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l4_uint32_t mmap_addr; /**< address of memory mapping buffer */
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l4_uint32_t drives_length; /**< size of drive info buffer */
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l4_uint32_t drives_addr; /**< address of driver info buffer */
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l4_uint32_t config_table; /**< ROM configuration table */
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l4_uint32_t boot_loader_name; /**< Boot Loader Name */
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l4_uint32_t apm_table; /**< APM table */
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l4_uint32_t vbe_ctrl_info; /**< VESA video contoller info */
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l4_uint32_t vbe_mode_info; /**< VESA video mode info */
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l4_uint16_t vbe_mode; /**< VESA video mode number */
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l4_uint16_t vbe_interface_seg; /**< VESA segment of prot BIOS interface */
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l4_uint16_t vbe_interface_off; /**< VESA offset of prot BIOS interface */
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l4_uint16_t vbe_interface_len; /**< VESA lenght of prot BIOS interface */
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} l4util_mb_info_t;
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#endif /* ! __ASSEMBLY__ */
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/**
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* Flags to be set in the 'flags' parameter above
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*/
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/** is there basic lower/upper memory information? */
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#define L4UTIL_MB_MEMORY 0x00000001
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/** is there a boot device set? */
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#define L4UTIL_MB_BOOTDEV 0x00000002
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/** is the command-line defined? */
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#define L4UTIL_MB_CMDLINE 0x00000004
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/** are there modules to do something with? */
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#define L4UTIL_MB_MODS 0x00000008
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/* These next two are mutually exclusive */
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/** is there a symbol table loaded? */
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#define L4UTIL_MB_AOUT_SYMS 0x00000010
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/** is there an ELF section header table? */
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#define L4UTIL_MB_ELF_SHDR 0x00000020
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/** is there a full memory map? */
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#define L4UTIL_MB_MEM_MAP 0x00000040
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/** Is there drive info? */
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#define L4UTIL_MB_DRIVE_INFO 0x00000080
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/** Is there a config table? */
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#define L4UTIL_MB_CONFIG_TABLE 0x00000100
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/** Is there a boot loader name? */
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#define L4UTIL_MB_BOOT_LOADER_NAME 0x00000200
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/** Is there a APM table? */
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#define L4UTIL_MB_APM_TABLE 0x00000400
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/** Is there video information? */
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#define L4UTIL_MB_VIDEO_INFO 0x00000800
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/** If we are multiboot-compliant, this value is present in the eax register */
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#define L4UTIL_MB_VALID 0x2BADB002UL
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#define L4UTIL_MB_VALID_ASM 0x2BADB002
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#endif
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