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