10 files changed, 24 insertions, 12 deletions
diff --git a/arch/i386/boot/Makefile b/arch/i386/boot/Makefile
index 08678a0a3d1..93386a4e40b 100644
--- a/arch/i386/boot/Makefile
+++ b/arch/i386/boot/Makefile
@@ -39,7 +39,7 @@ setup-y		+= printf.o string.o tty.o video.o version.o voyager.o
 setup-y		+= video-vga.o
 setup-y		+= video-vesa.o
 setup-y		+= video-bios.o
-
+targets		+= $(setup-y)
 hostprogs-y	:= tools/build
 
 HOSTCFLAGS_build.o := $(LINUXINCLUDE)
diff --git a/arch/i386/boot/boot.h b/arch/i386/boot/boot.h
index 0329c4fe4f8..dec70c9b605 100644
--- a/arch/i386/boot/boot.h
+++ b/arch/i386/boot/boot.h
@@ -56,7 +56,7 @@ static inline u16 inw(u16 port)
 
 static inline void outl(u32 v, u16 port)
 {
-	asm volatile("outl %0,%1" : : "a" (v), "dn" (port));
+	asm volatile("outl %0,%1" : : "a" (v), "dN" (port));
 }
 static inline u32 inl(u32 port)
 {
diff --git a/arch/i386/boot/cpucheck.c b/arch/i386/boot/cpucheck.c
index 8b0f4473b08..991e8ceae1d 100644
--- a/arch/i386/boot/cpucheck.c
+++ b/arch/i386/boot/cpucheck.c
@@ -115,8 +115,8 @@ static int has_eflag(u32 mask)
 	    "pushfl ; "
 	    "popl %1 ; "
 	    "popfl"
-	    : "=r" (f0), "=r" (f1)
-	    : "g" (mask));
+	    : "=&r" (f0), "=&r" (f1)
+	    : "ri" (mask));
 
 	return !!((f0^f1) & mask);
 }
diff --git a/arch/i386/boot/mca.c b/arch/i386/boot/mca.c
index 9b68bd1aef1..68222f2d4b6 100644
--- a/arch/i386/boot/mca.c
+++ b/arch/i386/boot/mca.c
@@ -26,7 +26,7 @@ int query_mca(void)
 	    "setc %0 ; "
 	    "movw %%es, %1 ; "
 	    "popw %%es"
-	    : "=acdSDm" (err), "=acdSDm" (es), "=b" (bx)
+	    : "=acd" (err), "=acdSD" (es), "=b" (bx)
 	    : "a" (0xc000));
 
 	if (err)
diff --git a/arch/i386/boot/pm.c b/arch/i386/boot/pm.c
index 3fa53e15ed7..1df025c7326 100644
--- a/arch/i386/boot/pm.c
+++ b/arch/i386/boot/pm.c
@@ -65,7 +65,7 @@ static void move_kernel_around(void)
 			     "popw %%ds ; "
 			     "popw %%es"
 			     : "+c" (dwords)
-			     : "rm" (dst_seg), "rm" (src_seg)
+			     : "r" (dst_seg), "r" (src_seg)
 			     : "esi", "edi");
 
 		syssize -= paras;
diff --git a/arch/i386/boot/tools/build.c b/arch/i386/boot/tools/build.c
index 886f47d8a48..b4248740ff0 100644
--- a/arch/i386/boot/tools/build.c
+++ b/arch/i386/boot/tools/build.c
@@ -5,7 +5,7 @@
  */
 
 /*
- * This file builds a disk-image from three different files:
+ * This file builds a disk-image from two different files:
  *
  * - setup: 8086 machine code, sets up system parm
  * - system: 80386 code for actual system
diff --git a/arch/i386/boot/tty.c b/arch/i386/boot/tty.c
index a8db78736b0..9c668aad351 100644
--- a/arch/i386/boot/tty.c
+++ b/arch/i386/boot/tty.c
@@ -31,7 +31,7 @@ void __attribute__((section(".inittext"))) putchar(int ch)
 
 	/* int $0x10 is known to have bugs involving touching registers
 	   it shouldn't.  Be extra conservative... */
-	asm volatile("pushal; int $0x10; popal"
+	asm volatile("pushal; pushw %%ds; int $0x10; popw %%ds; popal"
 		     : : "b" (0x0007), "c" (0x0001), "a" (0x0e00|ch));
 }
 
diff --git a/arch/i386/boot/video.c b/arch/i386/boot/video.c
index 3bb3573cd6a..958130ef004 100644
--- a/arch/i386/boot/video.c
+++ b/arch/i386/boot/video.c
@@ -195,7 +195,7 @@ static void vga_recalc_vertical(void)
 {
 	unsigned int font_size, rows;
 	u16 crtc;
-	u8 ov;
+	u8 pt, ov;
 
 	set_fs(0);
 	font_size = rdfs8(0x485); /* BIOS: font size (pixels) */
@@ -206,7 +206,12 @@ static void vga_recalc_vertical(void)
 
 	crtc = vga_crtc();
 
+	pt = in_idx(crtc, 0x11);
+	pt &= ~0x80;		/* Unlock CR0-7 */
+	out_idx(pt, crtc, 0x11);
+
 	out_idx((u8)rows, crtc, 0x12); /* Lower height register */
+
 	ov = in_idx(crtc, 0x07); /* Overflow register */
 	ov &= 0xbd;
 	ov |= (rows >> (8-1)) & 0x02;
@@ -411,7 +416,7 @@ static void restore_screen(void)
 			     "1: rep;stosl ; "
 			     "popw %%es"
 			     : "+D" (dst), "+c" (npad)
-			     : "bdSm" (video_segment),
+			     : "bdS" (video_segment),
 			       "a" (0x07200720));
 	}
 
diff --git a/arch/i386/boot/video.h b/arch/i386/boot/video.h
index 29eca1710b2..b92447d5121 100644
--- a/arch/i386/boot/video.h
+++ b/arch/i386/boot/video.h
@@ -117,8 +117,15 @@ extern int graphic_mode;	/* Graphics mode with linear frame buffer */
  * int $0x10 is notorious for touching registers it shouldn't.
  * gcc doesn't like %ebp being clobbered, so define it as a push/pop
  * sequence here.
+ *
+ * A number of systems, including the original PC can clobber %bp in
+ * certain circumstances, like when scrolling.  There exists at least
+ * one Trident video card which could clobber DS under a set of
+ * circumstances that we are unlikely to encounter (scrolling when
+ * using an extended graphics mode of more than 800x600 pixels), but
+ * it's cheap insurance to deal with that here.
  */
-#define INT10 "pushl %%ebp; int $0x10; popl %%ebp"
+#define INT10 "pushl %%ebp; pushw %%ds; int $0x10; popw %%ds; popl %%ebp"
 
 /* Accessing VGA indexed registers */
 static inline u8 in_idx(u16 port, u8 index)
diff --git a/arch/i386/boot/voyager.c b/arch/i386/boot/voyager.c
index 9221614d0db..61c8fe0453b 100644
--- a/arch/i386/boot/voyager.c
+++ b/arch/i386/boot/voyager.c
@@ -32,7 +32,7 @@ int query_voyager(void)
 	    "setc %0 ; "
 	    "movw %%es, %1 ; "
 	    "popw %%es"
-	    : "=qm" (err), "=rm" (es), "=D" (di)
+	    : "=q" (err), "=r" (es), "=D" (di)
 	    : "a" (0xffc0));
 
 	if (err)