x86 realmode: Adapt to x86emu/YABEL style return codes

realmode int handlers must return the same codes as the YABEL
int handlers now: 1 for "interrupt handled", 0 for "not handled"
(ie. error).

Change-Id: Idc01cf64e2c97150fc4643671a0bc4cca2ae6668
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1890
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

5 files changed, 26 insertions, 26 deletions

diff --git a/src/northbridge/via/cn400/vga.c b/src/northbridge/via/cn400/vga.c
index 8c75a4fa30..fa598aa8fa 100644
--- a/src/northbridge/via/cn400/vga.c
+++ b/src/northbridge/via/cn400/vga.c
@@ -39,7 +39,7 @@
 
 static int via_cn400_int15_handler(struct eregs *regs)
 {
-	int res=-1;
+	int res=0;
 	printk(BIOS_DEBUG, "via_cn400_int15_handler\n");
 	switch(regs->eax & 0xffff) {
 	case 0x5f19:
@@ -48,7 +48,7 @@ static int via_cn400_int15_handler(struct eregs *regs)
 		regs->eax=0x5f;
 		regs->ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
 		regs->ecx=0x060;
-		res=0;
+		res=1;
 		break;
 	case 0x5f00:
 		regs->eax = 0x8600;
@@ -56,14 +56,14 @@ static int via_cn400_int15_handler(struct eregs *regs)
 	case 0x5f01:
 		regs->eax = 0x5f;
 		regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
-		res = 0;
+		res = 1;
 		break;
 	case 0x5f02:
 		regs->eax=0x5f;
 		regs->ebx= (regs->ebx & 0xffff0000) | 2;
 		regs->ecx= (regs->ecx & 0xffff0000) | 0x401;  // PAL + crt only
 		regs->edx= (regs->edx & 0xffff0000) | 0;  // TV Layout - default
-		res=0;
+		res=1;
 		break;
 	case 0x5f0f:
 		regs->eax=0x860f;
diff --git a/src/northbridge/via/cn700/vga.c b/src/northbridge/via/cn700/vga.c
index d184644fd4..c23145976a 100644
--- a/src/northbridge/via/cn700/vga.c
+++ b/src/northbridge/via/cn700/vga.c
@@ -39,7 +39,7 @@
 
 static int via_cn700_int15_handler(struct eregs *regs)
 {
-	int res=-1;
+	int res=0;
 	printk(BIOS_DEBUG, "via_cn700_int15_handler\n");
 	switch(regs->eax & 0xffff) {
 	case 0x5f19:
@@ -48,7 +48,7 @@ static int via_cn700_int15_handler(struct eregs *regs)
 		regs->eax=0x5f;
 		regs->ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
 		regs->ecx=0x060;
-		res=0;
+		res=1;
 		break;
 	case 0x5f00:
 		regs->eax = 0x8600;
@@ -56,14 +56,14 @@ static int via_cn700_int15_handler(struct eregs *regs)
 	case 0x5f01:
 		regs->eax = 0x5f;
 		regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
-		res = 0;
+		res = 1;
 		break;
 	case 0x5f02:
 		regs->eax=0x5f;
 		regs->ebx= (regs->ebx & 0xffff0000) | 2;
 		regs->ecx= (regs->ecx & 0xffff0000) | 0x401;  // PAL + crt only
 		regs->edx= (regs->edx & 0xffff0000) | 0;  // TV Layout - default
-		res=0;
+		res=1;
 		break;
 	case 0x5f0f:
 		regs->eax=0x860f;
diff --git a/src/northbridge/via/cx700/vga.c b/src/northbridge/via/cx700/vga.c
index 4acad7e852..658535d6aa 100644
--- a/src/northbridge/via/cx700/vga.c
+++ b/src/northbridge/via/cx700/vga.c
@@ -46,7 +46,7 @@
 
 static int via_cx700_int15_handler(struct eregs *regs)
 {
-	int res=-1;
+	int res=0;
 	u8 mem_speed;
 
 #define MEMORY_SPEED_66MHZ	(0 << 4)
@@ -70,14 +70,14 @@ static int via_cx700_int15_handler(struct eregs *regs)
 	switch(regs->eax & 0xffff) {
 	case 0x5f00:	/* VGA POST Initialization Signal */
 		regs->eax = (regs->eax & 0xffff0000 ) | 0x5f;
-		res = 0;
+		res = 1;
 		break;
 
 	case 0x5f01:	/* Software Panel Type Configuration */
 		regs->eax = (regs->eax & 0xffff0000 ) | 0x5f;
 		// panel type =  2 = 1024 * 768
 		regs->ecx = (regs->ecx & 0xffffff00 ) | 2;
-		res = 0;
+		res = 1;
 		break;
 
 	case 0x5f27:	/* Boot Device Selection */
@@ -87,7 +87,7 @@ static int via_cx700_int15_handler(struct eregs *regs)
 		regs->ecx = 0x00000000; // 0 -> default
 		// TV Layout - default
 		regs->edx = (regs->edx & 0xffffff00) | 0;
-		res=0;
+		res=1;
 		break;
 
 	case 0x5f0b:	/* Get Expansion Setting */
@@ -95,12 +95,12 @@ static int via_cx700_int15_handler(struct eregs *regs)
 
 		regs->ecx = regs->ecx & 0xffffff00; // non-expansion
 		// regs->ecx = regs->ecx & 0xffffff00 | 1; // expansion
-		res=0;
+		res=1;
 		break;
 
 	case 0x5f0f:	/* VGA Post Completion */
 		regs->eax = (regs->eax & 0xffff0000 ) | 0x5f;
-		res=0;
+		res=1;
 		break;
 
 	case 0x5f18:
@@ -117,7 +117,7 @@ static int via_cx700_int15_handler(struct eregs *regs)
 
 		regs->ebx |= memory_mapping[mem_speed];
 
-		res=0;
+		res=1;
 		break;
 
         default:
diff --git a/src/northbridge/via/vt8623/vga.c b/src/northbridge/via/vt8623/vga.c
index fea691ebc2..8e9bd6de34 100644
--- a/src/northbridge/via/vt8623/vga.c
+++ b/src/northbridge/via/vt8623/vga.c
@@ -36,7 +36,7 @@
 
 static int via_vt8623_int15_handler(struct eregs *regs)
 {
-	int res=-1;
+	int res=0;
 	printk(BIOS_DEBUG, "via_vt8623_int15_handler\n");
 	switch(regs->eax & 0xffff) {
 	case 0x5f19:
@@ -45,7 +45,7 @@ static int via_vt8623_int15_handler(struct eregs *regs)
 		regs->eax=0x5f;
 		regs->ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
 		regs->ecx=0x060;
-		res=0;
+		res=1;
 		break;
 	case 0x5f00:
 		regs->eax = 0x8600;
@@ -53,14 +53,14 @@ static int via_vt8623_int15_handler(struct eregs *regs)
 	case 0x5f01:
 		regs->eax = 0x5f;
 		regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
-		res = 0;
+		res = 1;
 		break;
 	case 0x5f02:
 		regs->eax=0x5f;
 		regs->ebx= (regs->ebx & 0xffff0000) | 2;
 		regs->ecx= (regs->ecx & 0xffff0000) | 0x401;  // PAL + crt only
 		regs->edx= (regs->edx & 0xffff0000) | 0;  // TV Layout - default
-		res=0;
+		res=1;
 		break;
 	case 0x5f0f:
 		regs->eax=0x860f;
diff --git a/src/northbridge/via/vx800/vga.c b/src/northbridge/via/vx800/vga.c
index d91ad9fea3..be522f884c 100644
--- a/src/northbridge/via/vx800/vga.c
+++ b/src/northbridge/via/vx800/vga.c
@@ -52,13 +52,13 @@
 
 static int via_vx800_int15_handler(struct eregs *regs)
 {
-	int res=-1;
+	int res=0;
 	printk(BIOS_DEBUG, "via_vx800_int15_handler\n");
 	switch(regs->eax & 0xffff) {
 	case 0x5f19:
 		regs->eax=0x5f;
 		regs->ecx=0x03;
-		res=0;
+		res=1;
 		break;
 	case 0x5f18:
 	{
@@ -95,28 +95,28 @@ static int via_vx800_int15_handler(struct eregs *regs)
 		i = i << 4;
 		regs->ebx = regs->ebx + ((u32) i);
 		regs->eax = 0x5f;
-		res = 0;
+		res = 1;
 		break;
 	}
 	case 0x5f00:
 		regs->eax = 0x005f;
-		res = 0;
+		res = 1;
 		break;
 	case 0x5f01:
 		regs->eax = 0x5f;
 		regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
-		res = 0;
+		res = 1;
 		break;
 	case 0x5f02:
 		regs->eax=0x5f;
 		regs->ebx= (regs->ebx & 0xffff0000) | 2;
 		regs->ecx= (regs->ecx & 0xffff0000) | 0x401;  // PAL + crt only
 		regs->edx= (regs->edx & 0xffff0000) | 0;  // TV Layout - default
-		res=0;
+		res=1;
 		break;
 	case 0x5f0f:
 		regs->eax = 0x005f;
-		res = 0;
+		res = 1;
 		break;
         default:
 		printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",