1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* ----------------------------------------------------------------------- * 3 * 4 * Copyright 1999-2007 H. Peter Anvin - All Rights Reserved 5 * 6 * ----------------------------------------------------------------------- */ 7 8 #ifndef BOOT_VESA_H 9 #define BOOT_VESA_H 10 11 typedef struct { 12 u16 off, seg; 13 } far_ptr; 14 15 /* VESA General Information table */ 16 struct vesa_general_info { 17 u32 signature; /* 0 Magic number = "VESA" */ 18 u16 version; /* 4 */ 19 far_ptr vendor_string; /* 6 */ 20 u32 capabilities; /* 10 */ 21 far_ptr video_mode_ptr; /* 14 */ 22 u16 total_memory; /* 18 */ 23 24 u8 reserved[236]; /* 20 */ 25 } __attribute__ ((packed)); 26 27 #define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24)) 28 29 struct vesa_mode_info { 30 u16 mode_attr; /* 0 */ 31 u8 win_attr[2]; /* 2 */ 32 u16 win_grain; /* 4 */ 33 u16 win_size; /* 6 */ 34 u16 win_seg[2]; /* 8 */ 35 far_ptr win_scheme; /* 12 */ 36 u16 logical_scan; /* 16 */ 37 38 u16 h_res; /* 18 */ 39 u16 v_res; /* 20 */ 40 u8 char_width; /* 22 */ 41 u8 char_height; /* 23 */ 42 u8 memory_planes; /* 24 */ 43 u8 bpp; /* 25 */ 44 u8 banks; /* 26 */ 45 u8 memory_layout; /* 27 */ 46 u8 bank_size; /* 28 */ 47 u8 image_planes; /* 29 */ 48 u8 page_function; /* 30 */ 49 50 u8 rmask; /* 31 */ 51 u8 rpos; /* 32 */ 52 u8 gmask; /* 33 */ 53 u8 gpos; /* 34 */ 54 u8 bmask; /* 35 */ 55 u8 bpos; /* 36 */ 56 u8 resv_mask; /* 37 */ 57 u8 resv_pos; /* 38 */ 58 u8 dcm_info; /* 39 */ 59 60 u32 lfb_ptr; /* 40 Linear frame buffer address */ 61 u32 offscreen_ptr; /* 44 Offscreen memory address */ 62 u16 offscreen_size; /* 48 */ 63 64 u8 reserved[206]; /* 50 */ 65 } __attribute__ ((packed)); 66 67 #endif /* LIB_SYS_VESA_H */ 68