mirror of
https://github.com/torvalds/linux.git
synced 2024-12-01 08:31:37 +00:00
aa387d630c
In order to add xen EFI frambebuffer video support, it is required to add xen-efi's new video type (XEN_VGATYPE_EFI_LFB) case and handle it in the function xen_init_vga and set the video type to VIDEO_TYPE_EFI to enable efi video mode. The original patch from which this was broken out from: http://marc.info/?i=4E099AA6020000780004A4C6@nat28.tlf.novell.com Signed-off-by: Jan Beulich <JBeulich@novell.com> Signed-off-by: Tang Liang <liang.tang@oracle.com> [v2: The original author is Jan Beulich and Liang Tang ported it to upstream] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
#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.gbl_caps)
|
|
+ sizeof(info->u.vesa_lfb.gbl_caps))
|
|
screen_info->capabilities = info->u.vesa_lfb.gbl_caps;
|
|
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;
|
|
}
|
|
}
|