diff options
Diffstat (limited to 'src/pc80/serial.inc')
| -rw-r--r-- | src/pc80/serial.inc | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/src/pc80/serial.inc b/src/pc80/serial.inc deleted file mode 100644 index 7b80697c85..0000000000 --- a/src/pc80/serial.inc +++ /dev/null @@ -1,107 +0,0 @@ -#include <part/fallback_boot.h> - - -/* Base Address */ -#ifndef TTYS0_BASE -#define TTYS0_BASE 0x3f8 -#endif - -/* Baud Rate */ -#ifndef TTYS0_BAUD -#define TTYS0_BAUD 115200 -#endif - -#if ((115200%TTYS0_BAUD) != 0) -#error Bad ttys0 baud rate -#endif - -/* Baud Rate Divisor */ -#define TTYS0_DIV (115200/TTYS0_BAUD) -#define TTYS0_DIV_LO (TTYS0_DIV&0xFF) -#define TTYS0_DIV_HI ((TTYS0_DIV >> 8)&0xFF) - -/* Line Control Settings */ -#ifndef TTYS0_LCS -/* Set 8bit, 1 stop bit, no parity */ -#define TTYS0_LCS 0x3 -#endif - -/* Data */ -#define TTYS0_RBR (TTYS0_BASE+0x00) - -/* Control */ -#define TTYS0_TBR TTYS0_RBR -#define TTYS0_IER (TTYS0_BASE+0x01) -#define TTYS0_IIR (TTYS0_BASE+0x02) -#define TTYS0_FCR TTYS0_IIR -#define TTYS0_LCR (TTYS0_BASE+0x03) -#define TTYS0_MCR (TTYS0_BASE+0x04) -#define TTYS0_DLL TTYS0_RBR -#define TTYS0_DLM TTYS0_IER - -/* Status */ -#define TTYS0_LSR (TTYS0_BASE+0x05) -#define TTYS0_MSR (TTYS0_BASE+0x06) -#define TTYS0_SCR (TTYS0_BASE+0x07) - -#if USE_OPTION_TABLE == 1 -.section ".rom.data" - .type div,@object - .size div,8 -div: -.byte 1,2,3,6,12,24,48,96 - -.previous -#endif - - jmp serial0 - - /* uses: ax, dx */ -#define TTYS0_TX_AL \ - mov %al, %ah ; \ -9: mov $TTYS0_LSR, %dx ; \ - inb %dx, %al ; \ - test $0x20, %al ; \ - je 9b ; \ - mov $TTYS0_TBR, %dx ; \ - mov %ah, %al ; \ - outb %al, %dx - -serial_init: - /* Set 115.2Kbps,8n1 */ - /* Set 8bit, 1 stop bit, no parity, DLAB */ - mov $TTYS0_LCR, %dx - mov $(TTYS0_LCS | 0x80), %al - out %al, %dx - - /* set Baud Rate Divisor to 1 ==> 115200 Buad */ -#if USE_OPTION_TABLE == 1 - - movb $(RTC_BOOT_BYTE+1), %al - outb %al, $0x70 - xorl %edx,%edx - inb $0x71, %al - andb $7,%al - movb %al,%dl - movb div(%edx),%al - mov $TTYS0_DLL, %dx - out %al, %dx - mov $TTYS0_DLM, %dx - xorb %al,%al - out %al, %dx -#else - mov $TTYS0_DLL, %dx - mov $TTYS0_DIV_LO, %al - out %al, %dx - mov $TTYS0_DLM, %dx - mov $TTYS0_DIV_HI, %al - out %al, %dx -#endif - /* Disable DLAB */ - mov $TTYS0_LCR, %dx - mov $(TTYS0_LCS & 0x7f), %al - out %al, %dx - RETSP - -serial0: - CALLSP(serial_init) |