// SPDX-License-Identifier: GPL-2.0 #include <linux/screen_info.h> #include <linux/init.h> #include <asm/bootparam.h> #include <asm/setup.h> #include <xen/interface/xen.h> #include "xen-ops.h" void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size) { struct screen_info *screen_info = &boot_params.screen_info; /* This is drawn from a dump from vgacon:startup in * standard Linux. */ screen_info->orig_video_mode = 3; screen_info->orig_video_isVGA = 1; screen_info->orig_video_lines = 25; screen_info->orig_video_cols = 80; screen_info->orig_video_ega_bx = 3; screen_info->orig_video_points = 16; screen_info->orig_y = screen_info->orig_video_lines - 1; switch (info->video_type) { case XEN_VGATYPE_TEXT_MODE_3: if (size < offsetof(struct dom0_vga_console_info, u.text_mode_3) + sizeof(info->u.text_mode_3)) break; screen_info->orig_video_lines = info->u.text_mode_3.rows; screen_info->orig_video_cols = info->u.text_mode_3.columns; screen_info->orig_x = info->u.text_mode_3.cursor_x; screen_info->orig_y = info->u.text_mode_3.cursor_y; screen_info->orig_video_points = info->u.text_mode_3.font_height; break; case XEN_VGATYPE_EFI_LFB: case XEN_VGATYPE_VESA_LFB: if (size < offsetof(struct dom0_vga_console_info, u.vesa_lfb.gbl_caps)) break; screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB; screen_info->lfb_width = info->u.vesa_lfb.width; screen_info->lfb_height = info->u.vesa_lfb.height; screen_info->lfb_depth = info->u.vesa_lfb.bits_per_pixel; screen_info->lfb_base = info->u.vesa_lfb.lfb_base; screen_info->lfb_size = info->u.vesa_lfb.lfb_size; screen_info->lfb_linelength = info->u.vesa_lfb.bytes_per_line; screen_info->red_size = info->u.vesa_lfb.red_size; screen_info->red_pos = info->u.vesa_lfb.red_pos; screen_info->green_size = info->u.vesa_lfb.green_size; screen_info->green_pos = info->u.vesa_lfb.green_pos; screen_info->blue_size = info->u.vesa_lfb.blue_size; screen_info->blue_pos = info->u.vesa_lfb.blue_pos; screen_info->rsvd_size = info->u.vesa_lfb.rsvd_size; screen_info->rsvd_pos = info->u.vesa_lfb.rsvd_pos; if (size >= offsetof(struct dom0_vga_console_info, u.vesa_lfb.ext_lfb_base) + sizeof(info->u.vesa_lfb.ext_lfb_base) && info->u.vesa_lfb.ext_lfb_base) { screen_info->ext_lfb_base = info->u.vesa_lfb.ext_lfb_base; screen_info->capabilities |= VIDEO_CAPABILITY_64BIT_BASE; } if (info->video_type == XEN_VGATYPE_EFI_LFB) { screen_info->orig_video_isVGA = VIDEO_TYPE_EFI; break; } if (size >= offsetof(struct dom0_vga_console_info, u.vesa_lfb.mode_attrs) + sizeof(info->u.vesa_lfb.mode_attrs)) screen_info->vesa_attributes = info->u.vesa_lfb.mode_attrs; break; } }