linux-kernel - [PATCH 5/5] Xen vga: add the xen efi video mode support

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Message-Id: <1328758431-24339-1-git-send-email-liang.tang@oracle.com>
Date:	Thu,  9 Feb 2012 11:33:51 +0800
From:	Tang Liang <liang.tang@...cle.com>
To:	mjg59@...f.ucam.org, xen-devel@...ts.xensource.com,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	konrad.wilk@...cle.com
Cc:	liang.tang@...cle.com
Subject: [PATCH 5/5] Xen vga: add the xen efi video mode support

In order to add xen efi video support, it is required to add xen-efi's new
video type(XEN_VGATYPE_EFI_LFB) case handler in the function xen_init_vga
and set the video type to VIDEO_TYPE_EFI to enable efi video mode.

Signed-off-by: Tang Liang <liang.tang@...cle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 arch/x86/xen/vga.c          |    7 +++++++
 include/xen/interface/xen.h |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/x86/xen/vga.c b/arch/x86/xen/vga.c
index 1cd7f4d..6722e37 100644
--- a/arch/x86/xen/vga.c
+++ b/arch/x86/xen/vga.c
@@ -35,6 +35,7 @@ void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size)
 			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))
@@ -54,6 +55,12 @@ void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t 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))
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index a890804..c84ba71 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -454,6 +454,7 @@ struct dom0_vga_console_info {
 	uint8_t video_type;
 #define XEN_VGATYPE_TEXT_MODE_3 0x03
 #define XEN_VGATYPE_VESA_LFB    0x23
+#define XEN_VGATYPE_EFI_LFB     0x70
 
 	union {
 		struct {
-- 
1.7.7.5

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