X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fvideo%2Fconsole%2Fvgacon.c;h=d0d2733ef479e53e499850d07a1822ae974e80fd;hb=cf36a65b08969d3cff3c1c878b7e0fdf148379b7;hp=05735ff4e9c5205d311c7cf39e20ff62dcececc9;hpb=c0bc8721b8d0380ec69fa97578c91201201b05a9;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index 05735ff4e9c5..d0d2733ef479 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -35,10 +35,8 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
-#include <linux/sched.h>
 #include <linux/fs.h>
 #include <linux/kernel.h>
-#include <linux/tty.h>
 #include <linux/console.h>
 #include <linux/string.h>
 #include <linux/kd.h>
@@ -48,6 +46,7 @@
 #include <linux/spinlock.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/screen_info.h>
 #include <linux/smp_lock.h>
 #include <video/vga.h>
 #include <asm/io.h>
@@ -87,33 +86,31 @@ static int vgacon_set_origin(struct vc_data *c);
 static void vgacon_save_screen(struct vc_data *c);
 static int vgacon_scroll(struct vc_data *c, int t, int b, int dir,
 			 int lines);
-static u8 vgacon_build_attr(struct vc_data *c, u8 color, u8 intensity,
-			    u8 blink, u8 underline, u8 reverse);
 static void vgacon_invert_region(struct vc_data *c, u16 * p, int count);
 static unsigned long vgacon_uni_pagedir[2];
 
 /* Description of the hardware situation */
-static unsigned long	vga_vram_base;		/* Base of video memory */
-static unsigned long	vga_vram_end;		/* End of video memory */
-static int		vga_vram_size;		/* Size of video memory */
-static u16		vga_video_port_reg;	/* Video register select port */
-static u16		vga_video_port_val;	/* Video register value port */
-static unsigned int	vga_video_num_columns;	/* Number of text columns */
-static unsigned int	vga_video_num_lines;	/* Number of text lines */
-static int		vga_can_do_color = 0;	/* Do we support colors? */
-static unsigned int	vga_default_font_height;/* Height of default screen font */
-static unsigned char	vga_video_type;		/* Card type */
-static unsigned char	vga_hardscroll_enabled;
-static unsigned char	vga_hardscroll_user_enable = 1;
+static int		vga_init_done		__read_mostly;
+static unsigned long	vga_vram_base		__read_mostly;	/* Base of video memory */
+static unsigned long	vga_vram_end		__read_mostly;	/* End of video memory */
+static unsigned int	vga_vram_size		__read_mostly;	/* Size of video memory */
+static u16		vga_video_port_reg	__read_mostly;	/* Video register select port */
+static u16		vga_video_port_val	__read_mostly;	/* Video register value port */
+static unsigned int	vga_video_num_columns;			/* Number of text columns */
+static unsigned int	vga_video_num_lines;			/* Number of text lines */
+static int		vga_can_do_color	__read_mostly;	/* Do we support colors? */
+static unsigned int	vga_default_font_height __read_mostly;	/* Height of default screen font */
+static unsigned char	vga_video_type		__read_mostly;	/* Card type */
+static unsigned char	vga_hardscroll_enabled	__read_mostly;
+static unsigned char	vga_hardscroll_user_enable __read_mostly = 1;
 static unsigned char	vga_font_is_default = 1;
 static int		vga_vesa_blanked;
 static int 		vga_palette_blanked;
 static int 		vga_is_gfx;
 static int 		vga_512_chars;
 static int 		vga_video_font_height;
-static int 		vga_scan_lines;
-static unsigned int 	vga_rolled_over = 0;
-static int              vga_init_done;
+static int 		vga_scan_lines		__read_mostly;
+static unsigned int 	vga_rolled_over;
 
 static int __init no_scroll(char *str)
 {
@@ -372,7 +369,8 @@ static const char *vgacon_startup(void)
 	}
 
 	/* VGA16 modes are not handled by VGACON */
-	if ((ORIG_VIDEO_MODE == 0x0D) ||	/* 320x200/4 */
+	if ((ORIG_VIDEO_MODE == 0x00) ||	/* SCREEN_INFO not initialized */
+	    (ORIG_VIDEO_MODE == 0x0D) ||	/* 320x200/4 */
 	    (ORIG_VIDEO_MODE == 0x0E) ||	/* 640x200/4 */
 	    (ORIG_VIDEO_MODE == 0x10) ||	/* 640x350/4 */
 	    (ORIG_VIDEO_MODE == 0x12) ||	/* 640x480/4 */
@@ -578,12 +576,14 @@ static void vgacon_deinit(struct vc_data *c)
 }
 
 static u8 vgacon_build_attr(struct vc_data *c, u8 color, u8 intensity,
-			    u8 blink, u8 underline, u8 reverse)
+			    u8 blink, u8 underline, u8 reverse, u8 italic)
 {
 	u8 attr = color;
 
 	if (vga_can_do_color) {
-		if (underline)
+		if (italic)
+			attr = (attr & 0xF0) | c->vc_itcolor;
+		else if (underline)
 			attr = (attr & 0xf0) | c->vc_ulcolor;
 		else if (intensity == 0)
 			attr = (attr & 0xf0) | c->vc_halfcolor;
@@ -597,7 +597,9 @@ static u8 vgacon_build_attr(struct vc_data *c, u8 color, u8 intensity,
 	if (intensity == 2)
 		attr ^= 0x08;
 	if (!vga_can_do_color) {
-		if (underline)
+		if (italic)
+			attr = (attr & 0xF8) | 0x02;
+		else if (underline)
 			attr = (attr & 0xf8) | 0x01;
 		else if (intensity == 0)
 			attr = (attr & 0xf0) | 0x08;