For option ROMs we can use these extensions to request a particular video mode. Add a header file which defines the binary interface.
Signed-off-by: Simon Glass sjg@chromium.org ---
include/vbe.h | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 include/vbe.h
diff --git a/include/vbe.h b/include/vbe.h new file mode 100644 index 0000000..d405691 --- /dev/null +++ b/include/vbe.h @@ -0,0 +1,103 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper phueper@hueper.net + * All rights reserved. + * + * SPDX-License-Identifier: BSD-2-Clause + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ +#ifndef _VBE_H +#define _VBE_H + +/* these structs are for input from and output to OF */ +struct __packed screen_info { + u8 display_type; /* 0=NONE, 1= analog, 2=digital */ + u16 screen_width; + u16 screen_height; + /* bytes per line in framebuffer, may be more than screen_width */ + u16 screen_linebytes; + u8 color_depth; /* color depth in bits per pixel */ + u32 framebuffer_address; + u8 edid_block_zero[128]; +}; + +struct __packed screen_info_input { + u8 signature[4]; + u16 size_reserved; + u8 monitor_number; + u16 max_screen_width; + u8 color_depth; +}; + +/* these structs only store the required a subset of the VBE-defined fields */ +struct __packed vbe_info { + char signature[4]; + u16 version; + u8 *oem_string_ptr; + u32 capabilities; + u16 video_mode_list[256]; + u16 total_memory; +}; + +struct __packed vesa_mode_info { + u16 mode_attributes; /* 00 */ + u8 win_a_attributes; /* 02 */ + u8 win_b_attributes; /* 03 */ + u16 win_granularity; /* 04 */ + u16 win_size; /* 06 */ + u16 win_a_segment; /* 08 */ + u16 win_b_segment; /* 0a */ + u32 win_func_ptr; /* 0c */ + u16 bytes_per_scanline; /* 10 */ + u16 x_resolution; /* 12 */ + u16 y_resolution; /* 14 */ + u8 x_charsize; /* 16 */ + u8 y_charsize; /* 17 */ + u8 number_of_planes; /* 18 */ + u8 bits_per_pixel; /* 19 */ + u8 number_of_banks; /* 20 */ + u8 memory_model; /* 21 */ + u8 bank_size; /* 22 */ + u8 number_of_image_pages; /* 23 */ + u8 reserved_page; + u8 red_mask_size; + u8 red_mask_pos; + u8 green_mask_size; + u8 green_mask_pos; + u8 blue_mask_size; + u8 blue_mask_pos; + u8 reserved_mask_size; + u8 reserved_mask_pos; + u8 direct_color_mode_info; + u32 phys_base_ptr; + u32 offscreen_mem_offset; + u16 offscreen_mem_size; + u8 reserved[206]; +}; + +struct vbe_mode_info { + u16 video_mode; + bool valid; + union { + struct vesa_mode_info vesa; + u8 mode_info_block[256]; + }; +}; + +struct vbe_ddc_info { + u8 port_number; /* i.e. monitor number */ + u8 edid_transfer_time; + u8 ddc_level; + u8 edid_block_zero[128]; +}; + +#define VESA_GET_INFO 0x4f00 +#define VESA_GET_MODE_INFO 0x4f01 +#define VESA_SET_MODE 0x4f02 + +struct graphic_device; +int vbe_get_video_info(struct graphic_device *gdev); + +#endif