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Diffstat (limited to 'include/grub/i386/pc/vbe.h')
| -rw-r--r-- | include/grub/i386/pc/vbe.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/include/grub/i386/pc/vbe.h b/include/grub/i386/pc/vbe.h new file mode 100644 index 0000000..f349b5c --- /dev/null +++ b/include/grub/i386/pc/vbe.h @@ -0,0 +1,232 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef GRUB_VBE_MACHINE_HEADER +#define GRUB_VBE_MACHINE_HEADER 1 + +#include <grub/video.h> + +/* Default video mode to be used. */ +#define GRUB_VBE_DEFAULT_VIDEO_MODE 0x101 + +/* VBE status codes. */ +#define GRUB_VBE_STATUS_OK 0x004f + +#define GRUB_VBE_CAPABILITY_DACWIDTH (1 << 0) + +/* Bits from the GRUB_VBE "mode_attributes" field in the mode info struct. */ +#define GRUB_VBE_MODEATTR_SUPPORTED (1 << 0) +#define GRUB_VBE_MODEATTR_RESERVED_1 (1 << 1) +#define GRUB_VBE_MODEATTR_BIOS_TTY_OUTPUT_SUPPORT (1 << 2) +#define GRUB_VBE_MODEATTR_COLOR (1 << 3) +#define GRUB_VBE_MODEATTR_GRAPHICS (1 << 4) +#define GRUB_VBE_MODEATTR_VGA_COMPATIBLE (1 << 5) +#define GRUB_VBE_MODEATTR_VGA_WINDOWED_AVAIL (1 << 6) +#define GRUB_VBE_MODEATTR_LFB_AVAIL (1 << 7) +#define GRUB_VBE_MODEATTR_DOUBLE_SCAN_AVAIL (1 << 8) +#define GRUB_VBE_MODEATTR_INTERLACED_AVAIL (1 << 9) +#define GRUB_VBE_MODEATTR_TRIPLE_BUF_AVAIL (1 << 10) +#define GRUB_VBE_MODEATTR_STEREO_AVAIL (1 << 11) +#define GRUB_VBE_MODEATTR_DUAL_DISPLAY_START (1 << 12) + +/* Values for the GRUB_VBE memory_model field in the mode info struct. */ +#define GRUB_VBE_MEMORY_MODEL_TEXT 0x00 +#define GRUB_VBE_MEMORY_MODEL_CGA 0x01 +#define GRUB_VBE_MEMORY_MODEL_HERCULES 0x02 +#define GRUB_VBE_MEMORY_MODEL_PLANAR 0x03 +#define GRUB_VBE_MEMORY_MODEL_PACKED_PIXEL 0x04 +#define GRUB_VBE_MEMORY_MODEL_NONCHAIN4_256 0x05 +#define GRUB_VBE_MEMORY_MODEL_DIRECT_COLOR 0x06 +#define GRUB_VBE_MEMORY_MODEL_YUV 0x07 + +/* Note: + + Please refer to VESA BIOS Extension 3.0 Specification for more descriptive + meanings of following structures and how they should be used. + + I have tried to maintain field name compatibility against specification + while following naming conventions used in GRUB. */ + +typedef grub_uint32_t grub_vbe_farptr_t; +typedef grub_uint32_t grub_vbe_physptr_t; +typedef grub_uint32_t grub_vbe_status_t; + +struct grub_vbe_info_block +{ + grub_uint8_t signature[4]; + grub_uint16_t version; + + grub_vbe_farptr_t oem_string_ptr; + grub_uint32_t capabilities; + grub_vbe_farptr_t video_mode_ptr; + grub_uint16_t total_memory; + + grub_uint16_t oem_software_rev; + grub_vbe_farptr_t oem_vendor_name_ptr; + grub_vbe_farptr_t oem_product_name_ptr; + grub_vbe_farptr_t oem_product_rev_ptr; + + grub_uint8_t reserved[222]; + + grub_uint8_t oem_data[256]; +} GRUB_PACKED; + +struct grub_vbe_mode_info_block +{ + /* Mandatory information for all VBE revisions. */ + grub_uint16_t mode_attributes; + grub_uint8_t win_a_attributes; + grub_uint8_t win_b_attributes; + grub_uint16_t win_granularity; + grub_uint16_t win_size; + grub_uint16_t win_a_segment; + grub_uint16_t win_b_segment; + grub_vbe_farptr_t win_func_ptr; + grub_uint16_t bytes_per_scan_line; + + /* Mandatory information for VBE 1.2 and above. */ + grub_uint16_t x_resolution; + grub_uint16_t y_resolution; + grub_uint8_t x_char_size; + grub_uint8_t y_char_size; + grub_uint8_t number_of_planes; + grub_uint8_t bits_per_pixel; + grub_uint8_t number_of_banks; + grub_uint8_t memory_model; + grub_uint8_t bank_size; + grub_uint8_t number_of_image_pages; + grub_uint8_t reserved; + + /* Direct Color fields (required for direct/6 and YUV/7 memory models). */ + grub_uint8_t red_mask_size; + grub_uint8_t red_field_position; + grub_uint8_t green_mask_size; + grub_uint8_t green_field_position; + grub_uint8_t blue_mask_size; + grub_uint8_t blue_field_position; + grub_uint8_t rsvd_mask_size; + grub_uint8_t rsvd_field_position; + grub_uint8_t direct_color_mode_info; + + /* Mandatory information for VBE 2.0 and above. */ + grub_vbe_physptr_t phys_base_addr; + grub_uint32_t reserved2; + grub_uint16_t reserved3; + + /* Mandatory information for VBE 3.0 and above. */ + grub_uint16_t lin_bytes_per_scan_line; + grub_uint8_t bnk_number_of_image_pages; + grub_uint8_t lin_number_of_image_pages; + grub_uint8_t lin_red_mask_size; + grub_uint8_t lin_red_field_position; + grub_uint8_t lin_green_mask_size; + grub_uint8_t lin_green_field_position; + grub_uint8_t lin_blue_mask_size; + grub_uint8_t lin_blue_field_position; + grub_uint8_t lin_rsvd_mask_size; + grub_uint8_t lin_rsvd_field_position; + grub_uint32_t max_pixel_clock; + + /* Reserved field to make structure to be 256 bytes long, VESA BIOS + Extension 3.0 Specification says to reserve 189 bytes here but + that doesn't make structure to be 256 bytes. So additional one is + added here. */ + grub_uint8_t reserved4[189 + 1]; +} GRUB_PACKED; + +struct grub_vbe_crtc_info_block +{ + grub_uint16_t horizontal_total; + grub_uint16_t horizontal_sync_start; + grub_uint16_t horizontal_sync_end; + grub_uint16_t vertical_total; + grub_uint16_t vertical_sync_start; + grub_uint16_t vertical_sync_end; + grub_uint8_t flags; + grub_uint32_t pixel_clock; + grub_uint16_t refresh_rate; + grub_uint8_t reserved[40]; +} GRUB_PACKED; + +struct grub_vbe_palette_data +{ + grub_uint8_t blue; + grub_uint8_t green; + grub_uint8_t red; + grub_uint8_t alignment; +} GRUB_PACKED; + +struct grub_vbe_flat_panel_info +{ + grub_uint16_t horizontal_size; + grub_uint16_t vertical_size; + grub_uint16_t panel_type; + grub_uint8_t red_bpp; + grub_uint8_t green_bpp; + grub_uint8_t blue_bpp; + grub_uint8_t reserved_bpp; + grub_uint32_t reserved_offscreen_mem_size; + grub_vbe_farptr_t reserved_offscreen_mem_ptr; + + grub_uint8_t reserved[14]; +} GRUB_PACKED; + +/* Prototypes for helper functions. */ +/* Call VESA BIOS 0x4f00 to get VBE Controller Information, return status. */ +grub_vbe_status_t +grub_vbe_bios_get_controller_info (struct grub_vbe_info_block *controller_info); +/* Call VESA BIOS 0x4f01 to get VBE Mode Information, return status. */ +grub_vbe_status_t +grub_vbe_bios_get_mode_info (grub_uint32_t mode, + struct grub_vbe_mode_info_block *mode_info); +/* Call VESA BIOS 0x4f03 to return current VBE Mode, return status. */ +grub_vbe_status_t +grub_vbe_bios_get_mode (grub_uint32_t *mode); +/* Call VESA BIOS 0x4f05 to set memory window, return status. */ +grub_vbe_status_t +grub_vbe_bios_set_memory_window (grub_uint32_t window, grub_uint32_t position); +/* Call VESA BIOS 0x4f05 to return memory window, return status. */ +grub_vbe_status_t +grub_vbe_bios_get_memory_window (grub_uint32_t window, + grub_uint32_t *position); +/* Call VESA BIOS 0x4f06 to set scanline length (in bytes), return status. */ +grub_vbe_status_t +grub_vbe_bios_set_scanline_length (grub_uint32_t length); +/* Call VESA BIOS 0x4f06 to return scanline length (in bytes), return status. */ +grub_vbe_status_t +grub_vbe_bios_get_scanline_length (grub_uint32_t *length); +/* Call VESA BIOS 0x4f07 to get display start, return status. */ +grub_vbe_status_t +grub_vbe_bios_get_display_start (grub_uint32_t *x, + grub_uint32_t *y); + +grub_vbe_status_t grub_vbe_bios_getset_dac_palette_width (int set, int *width); + +#define grub_vbe_bios_get_dac_palette_width(width) grub_vbe_bios_getset_dac_palette_width(0, (width)) +#define grub_vbe_bios_set_dac_palette_width(width) grub_vbe_bios_getset_dac_palette_width(1, (width)) + +grub_err_t grub_vbe_probe (struct grub_vbe_info_block *info_block); +grub_err_t grub_vbe_get_video_mode (grub_uint32_t *mode); +grub_err_t grub_vbe_get_video_mode_info (grub_uint32_t mode, + struct grub_vbe_mode_info_block *mode_info); +grub_vbe_status_t +grub_vbe_bios_get_pm_interface (grub_uint16_t *seg, grub_uint16_t *offset, + grub_uint16_t *length); + + +#endif /* ! GRUB_VBE_MACHINE_HEADER */ |