Bharat fixes and updates

src/superio/SMC/fdc37c67x/setup_serial.inc

@@ -1,10 +1,9 @@
 /*
- * Enable the peripheral devices on the FDC37N769 Super IO chip
- */
-
-/*
- * This code is untested but should at least get a serial port working.
- *   -Tyson
+ * Enable the peripheral devices on the FDC37C67x Super IO chip
+ *
+ * I had to modify Tyson's code a little and add some Super IO stuff
+ * from the Winbond setup_serial.inc to set the baudrate correctly
+ * - Bharath
  */
 
 /* The base address is either 0x3F0 or 0x370, depending on config pin */
@@ -24,17 +23,37 @@
 #define SMC_INDEX SMC_BASE
 #define SMC_DATA  SMC_BASE+1
 
+#define OUTIT(val, port) movb val, %al; \
+	movw port, %dx; \
+	outb %al, %dx
+
+#define WRITESIOBYTE(register, value) movw register, %dx ;\
+				movb value, %al ;\
+				outb %al, %dx; OUTIT(%al, $0x80)
+
+#define WRITESIOWORD(register, value) movw register, %dx ;\
+				movw value, %ax ;\
+				outw %ax, %dx; OUTIT(%al, $0x80)
+
 #define SMC_READ(index) \
 	mov index, %al		; \
-	mov $SMC_BASE, %dx	; \
+	mov $SMC_INDEX, %dx	; \
 	outb %al, %dx		; \
 	inc %dx			; \
 	inb %dx, %al		;
 
-#define SMC_WRITE(data, index) \
+#define SMC_WRITE(device, data, index) \
+	mov $0x07, %al		; \
+	mov $SMC_INDEX, %dx  	; \
+	outb %al, %dx		;
+
+	mov device, %al		; \
+	mov $SMC_DATA, %dx	; \
+	outb %al, %dx		;
+
 	mov data, %ah		; \
 	mov index, %al		; \
-	mov $SMC_BASE, %dx	; \
+	mov $SMC_INDEX, %dx	; \
 	outb %al, %dx		; \
 	inc %dx			; \
 	mov %ah, %al		; \
@@ -49,48 +68,64 @@
 
 	/* Check for Device ID */
 
-	SMC_READ($0x0d)
-	cmp %al, 0x04
+	SMC_READ($0x20)
+	cmp %al, $0x40
 	je 2f
 	mov $0xfe, %al
 	outb %al, $0x80
-#if 0
-1:	hlt
-	jmp	1b
-#endif
 2:
 
-	/* Pin configuration - need to enable IRQ 4 output */
-	
-	SMC_WRITE($0xf4, $0x03)	;
+	/* Set address of serial port 0 (Device 4)*/
 
-	SMC_WRITE($0x88, $0x02)	;
+	SMC_WRITE($0x04, $0x3, $0x60)	;
+	SMC_WRITE($0x04, $0xf8, $0x61)	;
 
-	/* Set address of parallel port */
-#if 0
-	SMC_WRITE($0xde, $0x23)	;
-#endif
-	/* Set address of serial port 0 */
+	/* Set address of serial port 1 (Device 5)*/
 
-	SMC_WRITE($0xfe, $0x24)	;
-
-	/* Set address of serial port 1 */
-
-	SMC_WRITE($0xbe, $0x25)	;
+	SMC_WRITE($0x05, $0x2, $0x60)	;
+	SMC_WRITE($0x05, $0xf8, $0x61)	;
 
 	/* Set IRQs of serial ports */
 
-	SMC_WRITE($0x21, $0x28)	;
+	SMC_WRITE($0x04, $0x04, $0x70)	;
+	SMC_WRITE($0x05, $0x03, $0x70)  ;
 
-	/* Set valid bit */
+	/* Set mode registers of serial ports */
+
+	SMC_WRITE($0x04, $0x00, $0xf0)  ;
+	SMC_WRITE($0x05, $0x00, $0xf0)  ;
+
+	/* Set DMA for serial port 2 */
+
+	SMC_WRITE($0x05, $0x4, $0x74)  ;
+
+	/* Set IR registers for serial port 2 */
+
+	SMC_WRITE($0x05, $0x2, $0xf1)  ;
+	SMC_WRITE($0x05, $0x3, $0xf2)  ;
+
+	/* Set valid bit for serial ports */
+
+	SMC_WRITE($0x04, $0x01, $0x30)  ;
+	SMC_WRITE($0x05, $0x01, $0x30)  ;
+
+        /* Set baud rate */
+ 
+	WRITESIOBYTE($0x3fb, $0x80)
+	// Set 115 kb
+	WRITESIOWORD($0x3f8, $1)
+	// Set no parity, one stop, 8 data bits
+	WRITESIOBYTE($0x3fb, $3)
+	// Turn on RTS, DRT
+	WRITESIOBYTE($0x3fc, $3)
+	// Enable interrupts
+	WRITESIOBYTE($0x3f9, $0xf)
 
-	SMC_READ($0x00)
-	or $0x80, %al
-	SMC_WRITE(%al, $0x00)
-	
 	/* Exit the configuration state */
 
 	mov $0xAA, %al
 	mov $SMC_BASE, %dx
 	outb %al, %dx
 
+
+