^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- linux-c -*- ------------------------------------------------------- *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 1991, 1992 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2007 rPath, Inc. - All Rights Reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * ----------------------------------------------------------------------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Header file for the real-mode video probing code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifndef BOOT_VIDEO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define BOOT_VIDEO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * This code uses an extended set of video mode numbers. These include:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Aliases for standard modes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * NORMAL_VGA (-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * EXTENDED_VGA (-2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * ASK_VGA (-3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * of compatibility when extending the table. These are between 0x00 and 0xff.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define VIDEO_FIRST_MENU 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Standard BIOS video modes (BIOS number + 0x0100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define VIDEO_FIRST_BIOS 0x0100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* VESA BIOS video modes (VESA number + 0x0200) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define VIDEO_FIRST_VESA 0x0200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Video7 special modes (BIOS number + 0x0900) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define VIDEO_FIRST_V7 0x0900
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* Special video modes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define VIDEO_FIRST_SPECIAL 0x0f00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define VIDEO_80x25 0x0f00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define VIDEO_8POINT 0x0f01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define VIDEO_80x43 0x0f02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define VIDEO_80x28 0x0f03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define VIDEO_CURRENT_MODE 0x0f04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define VIDEO_80x30 0x0f05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define VIDEO_80x34 0x0f06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define VIDEO_80x60 0x0f07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define VIDEO_GFX_HACK 0x0f08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define VIDEO_LAST_SPECIAL 0x0f09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* Video modes given by resolution */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define VIDEO_FIRST_RESOLUTION 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* The "recalculate timings" flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define VIDEO_RECALC 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void store_screen(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define DO_STORE() store_screen()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Mode table structures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct mode_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u16 mode; /* Mode number (vga= style) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u16 x, y; /* Width, height */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u16 depth; /* Bits per pixel, 0 for text mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct card_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) const char *card_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int (*set_mode)(struct mode_info *mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int (*probe)(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct mode_info *modes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int nmodes; /* Number of probed modes so far */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int unsafe; /* Probing is unsafe, only do after "scan" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u16 xmode_first; /* Unprobed modes to try to call anyway */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u16 xmode_n; /* Size of unprobed mode range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define __videocard struct card_info __section(".videocards") __attribute__((used))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) extern struct card_info video_cards[], video_cards_end[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int mode_defined(u16 mode); /* video.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /* Basic video information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define ADAPTER_CGA 0 /* CGA/MDA/HGC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define ADAPTER_EGA 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define ADAPTER_VGA 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) extern int adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) extern int force_x, force_y; /* Don't query the BIOS for cols/rows */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) extern int do_restore; /* Restore screen contents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) extern int graphic_mode; /* Graphics mode with linear frame buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* Accessing VGA indexed registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static inline u8 in_idx(u16 port, u8 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) outb(index, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return inb(port+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static inline void out_idx(u8 v, u16 port, u8 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) outw(index+(v << 8), port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /* Writes a value to an indexed port and then reads the port again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static inline u8 tst_idx(u8 v, u16 port, u8 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) out_idx(port, index, v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return in_idx(port, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Get the I/O port of the VGA CRTC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) u16 vga_crtc(void); /* video-vga.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #endif /* BOOT_VIDEO_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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