1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/screen_info.h> 3 #include <linux/init.h> 4 5 #include <asm/setup.h> 6 7 #include <xen/interface/xen.h> 8 9 #include "xen-ops.h" 10 11 void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size, 12 struct screen_info *screen_info) 13 { 14 /* This is drawn from a dump from vgacon:startup in 15 * standard Linux. */ 16 screen_info->orig_video_mode = 3; 17 screen_info->orig_video_isVGA = 1; 18 screen_info->orig_video_lines = 25; 19 screen_info->orig_video_cols = 80; 20 screen_info->orig_video_ega_bx = 3; 21 screen_info->orig_video_points = 16; 22 screen_info->orig_y = screen_info->orig_video_lines - 1; 23 24 switch (info->video_type) { 25 case XEN_VGATYPE_TEXT_MODE_3: 26 if (size < offsetof(struct dom0_vga_console_info, u.text_mode_3) 27 + sizeof(info->u.text_mode_3)) 28 break; 29 screen_info->orig_video_lines = info->u.text_mode_3.rows; 30 screen_info->orig_video_cols = info->u.text_mode_3.columns; 31 screen_info->orig_x = info->u.text_mode_3.cursor_x; 32 screen_info->orig_y = info->u.text_mode_3.cursor_y; 33 screen_info->orig_video_points = 34 info->u.text_mode_3.font_height; 35 break; 36 37 case XEN_VGATYPE_EFI_LFB: 38 case XEN_VGATYPE_VESA_LFB: 39 if (size < offsetof(struct dom0_vga_console_info, 40 u.vesa_lfb.gbl_caps)) 41 break; 42 screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB; 43 screen_info->lfb_width = info->u.vesa_lfb.width; 44 screen_info->lfb_height = info->u.vesa_lfb.height; 45 screen_info->lfb_depth = info->u.vesa_lfb.bits_per_pixel; 46 screen_info->lfb_base = info->u.vesa_lfb.lfb_base; 47 screen_info->lfb_size = info->u.vesa_lfb.lfb_size; 48 screen_info->lfb_linelength = info->u.vesa_lfb.bytes_per_line; 49 screen_info->red_size = info->u.vesa_lfb.red_size; 50 screen_info->red_pos = info->u.vesa_lfb.red_pos; 51 screen_info->green_size = info->u.vesa_lfb.green_size; 52 screen_info->green_pos = info->u.vesa_lfb.green_pos; 53 screen_info->blue_size = info->u.vesa_lfb.blue_size; 54 screen_info->blue_pos = info->u.vesa_lfb.blue_pos; 55 screen_info->rsvd_size = info->u.vesa_lfb.rsvd_size; 56 screen_info->rsvd_pos = info->u.vesa_lfb.rsvd_pos; 57 58 if (size >= offsetof(struct dom0_vga_console_info, 59 u.vesa_lfb.ext_lfb_base) 60 + sizeof(info->u.vesa_lfb.ext_lfb_base) 61 && info->u.vesa_lfb.ext_lfb_base) { 62 screen_info->ext_lfb_base = info->u.vesa_lfb.ext_lfb_base; 63 screen_info->capabilities |= VIDEO_CAPABILITY_64BIT_BASE; 64 } 65 66 if (info->video_type == XEN_VGATYPE_EFI_LFB) { 67 screen_info->orig_video_isVGA = VIDEO_TYPE_EFI; 68 break; 69 } 70 71 if (size >= offsetof(struct dom0_vga_console_info, 72 u.vesa_lfb.mode_attrs) 73 + sizeof(info->u.vesa_lfb.mode_attrs)) 74 screen_info->vesa_attributes = info->u.vesa_lfb.mode_attrs; 75 break; 76 } 77 } 78