mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
335e4dd67b
The hypervisor has been supplying this information for a couple of major releases. Make use of it. The need to set a flag in the capabilities field also points out that the prior setting of that field from the hypervisor interface's gbl_caps one was wrong, so that code gets deleted (there's also no equivalent of this in native boot code). Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/a3df8bf3-d044-b7bb-3383-cd5239d6d4af@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
// 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 (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;
|
|
|
|
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;
|
|
}
|
|
break;
|
|
}
|
|
}
|