diff options
Diffstat (limited to 'board/evb64260/serial.h')
-rw-r--r-- | board/evb64260/serial.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/board/evb64260/serial.h b/board/evb64260/serial.h new file mode 100644 index 0000000..bac9253 --- /dev/null +++ b/board/evb64260/serial.h @@ -0,0 +1,63 @@ +/* serial.h - mostly useful for DUART serial_init in serial.c */ + +#ifndef __SERIAL_H__ +#define __SERIAL_H__ + +#if 0 + +#define B230400 1 +#define B115200 2 +#define B57600 4 +#define B38400 82 +#define B19200 163 +#define B9600 24 +#define B4800 651 +#define B2400 1302 +#define B1200 2604 +#define B600 5208 +#define B300 10417 +#define B150 20833 +#define B110 28409 +#define BDEFAULT B115200 + + /* this stuff is important to initialize + the DUART channels */ + +#define Scale 0x01L /* distance between port addresses */ +#define COM1 0x000003f8 /* Keyboard */ +#define COM2 0x000002f8 /* Host */ + + +/* Port Definitions relative to base COM port addresses */ +#define DataIn (0x00*Scale) /* data input port */ +#define DataOut (0x00*Scale) /* data output port */ +#define BaudLsb (0x00*Scale) /* baud rate divisor least significant byte */ +#define BaudMsb (0x01*Scale) /* baud rate divisor most significant byte */ +#define Ier (0x01*Scale) /* interrupt enable register */ +#define Iir (0x02*Scale) /* interrupt identification register */ +#define Lcr (0x03*Scale) /* line control register */ +#define Mcr (0x04*Scale) /* modem control register */ +#define Lsr (0x05*Scale) /* line status register */ +#define Msr (0x06*Scale) /* modem status register */ + +/* Bit Definitions for above ports */ +#define LcrDlab 0x80 /* b7: enable baud rate divisor registers */ +#define LcrDflt 0x03 /* b6-0: no parity, 1 stop, 8 data */ + +#define McrRts 0x02 /* b1: request to send (I am ready to xmit) */ +#define McrDtr 0x01 /* b0: data terminal ready (I am alive ready to rcv) */ +#define McrDflt (McrRts|McrDtr) + +#define LsrTxD 0x6000 /* b5: transmit holding register empty (i.e. xmit OK!)*/ + /* b6: transmitter empty */ +#define LsrRxD 0x0100 /* b0: received data ready (i.e. got a byte!) */ + +#define MsrRi 0x0040 /* b6: ring indicator (other guy is ready to rcv) */ +#define MsrDsr 0x0020 /* b5: data set ready (other guy is alive ready to rcv */ +#define MsrCts 0x0010 /* b4: clear to send (other guy is ready to rcv) */ + +#define IerRda 0xf /* b0: Enable received data available interrupt */ + +#endif + +#endif /* __SERIAL_H__ */ |