c2419b4a47
Get the information about the VGA console hardware from Xen, and put it into the form the bootloader normally generates, so that the rest of the kernel can deal with VGA as usual. [ Impact: make VGA console work in dom0 ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> [v1: Rebased on 2.6.39] [v2: Removed incorrect comments and fixed compile warnings] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
#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_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 (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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