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Diffstat (limited to 'include/vesa.h')
| -rw-r--r-- | include/vesa.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/include/vesa.h b/include/vesa.h new file mode 100644 index 00000000000..9285bfa921a --- /dev/null +++ b/include/vesa.h @@ -0,0 +1,130 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ +#ifndef _VESA_H +#define _VESA_H + +/* these structs are for input from and output to OF */ +struct __packed vesa_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 vesa_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 subset of fields in Vesa BIOS + * Extensions + */ +struct __packed vesa_bios_ext_info { + char signature[4]; + u16 version; + u32 oem_string_ptr; + u32 capabilities; + u32 modes_ptr; + u16 total_memory; + u16 oem_version; + u32 vendor_name_ptr; + u32 product_name_ptr; + u32 product_rev_ptr; +}; + +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 vesa_state { + u16 video_mode; + bool valid; + union { + struct vesa_mode_info vesa; + u8 mode_info_block[256]; + }; +}; + +struct vesa_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 +#define VESA_GET_CUR_MODE 0x4f03 + +extern struct vesa_state mode_info; + +struct video_priv; +struct video_uc_plat; + +/** + * vesa_setup_video_priv() - Set up a video device using VESA information + * + * The vesa struct is used by various x86 drivers, so this is a common function + * to use it to set up the video. + * + * @vesa: Vesa information to use (vesa->phys_base_ptr is ignored) + * @fb: Frame buffer address (since vesa->phys_base_ptr is only 32 bits) + * @uc_priv: Video device's uclass-private information + * @plat: Video devices's uclass-private platform data + * Returns: 0 if OK, -ENXIO if the x resolution is 0, -EEPROTONOSUPPORT if the + * pixel format is not supported + */ +int vesa_setup_video_priv(struct vesa_mode_info *vesa, u64 fb, + struct video_priv *uc_priv, + struct video_uc_plat *plat); +int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void)); + +#endif |