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644e61448c
The current vesa structure only provides a 32-bit value for the frame buffer. Many modern machines use an address outside the range. It is still useful to have this common struct, but add a separate frame-buffer address as well. Add a comment for vesa_setup_video_priv() while we are here. Signed-off-by: Simon Glass <sjg@chromium.org>
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
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* All rights reserved.
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#ifndef _VESA_H
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#define _VESA_H
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/* these structs are for input from and output to OF */
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struct __packed vesa_screen_info {
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u8 display_type; /* 0=NONE, 1= analog, 2=digital */
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u16 screen_width;
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u16 screen_height;
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/* bytes per line in framebuffer, may be more than screen_width */
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u16 screen_linebytes;
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u8 color_depth; /* color depth in bits per pixel */
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u32 framebuffer_address;
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u8 edid_block_zero[128];
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};
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struct __packed vesa_screen_info_input {
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u8 signature[4];
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u16 size_reserved;
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u8 monitor_number;
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u16 max_screen_width;
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u8 color_depth;
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};
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/*
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* These structs only store the required subset of fields in Vesa BIOS
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* Extensions
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*/
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struct __packed vesa_bios_ext_info {
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char signature[4];
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u16 version;
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u32 oem_string_ptr;
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u32 capabilities;
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u32 modes_ptr;
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u16 total_memory;
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u16 oem_version;
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u32 vendor_name_ptr;
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u32 product_name_ptr;
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u32 product_rev_ptr;
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};
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struct __packed vesa_mode_info {
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u16 mode_attributes; /* 00 */
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u8 win_a_attributes; /* 02 */
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u8 win_b_attributes; /* 03 */
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u16 win_granularity; /* 04 */
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u16 win_size; /* 06 */
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u16 win_a_segment; /* 08 */
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u16 win_b_segment; /* 0a */
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u32 win_func_ptr; /* 0c */
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u16 bytes_per_scanline; /* 10 */
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u16 x_resolution; /* 12 */
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u16 y_resolution; /* 14 */
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u8 x_charsize; /* 16 */
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u8 y_charsize; /* 17 */
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u8 number_of_planes; /* 18 */
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u8 bits_per_pixel; /* 19 */
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u8 number_of_banks; /* 20 */
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u8 memory_model; /* 21 */
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u8 bank_size; /* 22 */
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u8 number_of_image_pages; /* 23 */
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u8 reserved_page;
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u8 red_mask_size;
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u8 red_mask_pos;
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u8 green_mask_size;
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u8 green_mask_pos;
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u8 blue_mask_size;
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u8 blue_mask_pos;
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u8 reserved_mask_size;
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u8 reserved_mask_pos;
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u8 direct_color_mode_info;
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u32 phys_base_ptr;
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u32 offscreen_mem_offset;
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u16 offscreen_mem_size;
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u8 reserved[206];
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};
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struct vesa_state {
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u16 video_mode;
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bool valid;
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union {
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struct vesa_mode_info vesa;
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u8 mode_info_block[256];
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};
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};
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struct vesa_ddc_info {
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u8 port_number; /* i.e. monitor number */
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u8 edid_transfer_time;
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u8 ddc_level;
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u8 edid_block_zero[128];
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};
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#define VESA_GET_INFO 0x4f00
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#define VESA_GET_MODE_INFO 0x4f01
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#define VESA_SET_MODE 0x4f02
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#define VESA_GET_CUR_MODE 0x4f03
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extern struct vesa_state mode_info;
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struct video_priv;
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struct video_uc_plat;
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/**
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* vesa_setup_video_priv() - Set up a video device using VESA information
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*
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* The vesa struct is used by various x86 drivers, so this is a common function
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* to use it to set up the video.
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*
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* @vesa: Vesa information to use (vesa->phys_base_ptr is ignored)
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* @fb: Frame buffer address (since vesa->phys_base_ptr is only 32 bits)
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* @uc_priv: Video device's uclass-private information
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* @plat: Video devices's uclass-private platform data
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* Returns: 0 if OK, -ENXIO if the x resolution is 0, -EEPROTONOSUPPORT if the
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* pixel format is not supported
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*/
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int vesa_setup_video_priv(struct vesa_mode_info *vesa, u64 fb,
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struct video_priv *uc_priv,
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struct video_uc_plat *plat);
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int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void));
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#endif
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