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/* Stand-alone library for M32R-EVA board.
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/* Stand-alone library for M32R-EVA board.
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*
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*
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* Copyright (c) 1996 Cygnus Support
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* Copyright (c) 1996, 1998 Cygnus Support
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*
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* notice is included verbatim in any distributions. No written agreement,
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* and need not follow the licensing terms described here, provided that
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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* they apply.
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*/
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*/
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/* Serial I/O routines for M32R-EVA board */
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/* #define REVC to enable handling of the original RevC board,
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which is no longer the default, nor is it supported. */
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#ifndef REVC
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/* Serial I/O routines for MSA2000G01 board */
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#define UART_INCHAR_ADDR 0xff004009
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#define UART_OUTCHR_ADDR 0xff004007
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#define UART_STATUS_ADDR 0xff004002
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#else
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/* Serial I/O routines for M32R-EVA board */
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#define UART_INCHAR_ADDR 0xff102013
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#define UART_INCHAR_ADDR 0xff102013
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#define UART_OUTCHR_ADDR 0xff10200f
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#define UART_OUTCHR_ADDR 0xff10200f
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#define UART_STATUS_ADDR 0xff102006
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#define UART_STATUS_ADDR 0xff102006
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#endif
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#define UART_INPUT_EMPTY 0x4
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#define UART_INPUT_EMPTY 0x4
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#define UART_OUTPUT_EMPTY 0x1
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#define UART_OUTPUT_EMPTY 0x1
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static volatile char *rx_port = (char *) UART_INCHAR_ADDR;
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static volatile char *rx_port = (unsigned char *) UART_INCHAR_ADDR;
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static volatile char *tx_port = (char *) UART_OUTCHR_ADDR;
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static volatile char *tx_port = (char *) UART_OUTCHR_ADDR;
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static volatile short *rx_status = (short *) UART_STATUS_ADDR;
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static volatile short *rx_status = (short *) UART_STATUS_ADDR;
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static volatile short *tx_status = (short *) UART_STATUS_ADDR;
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static volatile short *tx_status = (short *) UART_STATUS_ADDR;
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static int
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static int
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rx_rdy()
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rx_rdy()
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{
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{
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#ifndef REVC
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return (*rx_status & UART_INPUT_EMPTY);
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#else
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return !(*rx_status & UART_INPUT_EMPTY);
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return !(*rx_status & UART_INPUT_EMPTY);
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#endif
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}
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}
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static int
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static int
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tx_rdy()
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tx_rdy()
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{
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{
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return (*tx_status & UART_OUTPUT_EMPTY);
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return (*tx_status & UART_OUTPUT_EMPTY);
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}
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}
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static unsigned char
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static unsigned char
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rx_char()
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rx_uchar()
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{
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{
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return *rx_port;
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return *rx_port;
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}
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}
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void
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void
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int
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int
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getDebugChar()
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getDebugChar()
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{
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{
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while (!rx_rdy())
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while (!rx_rdy())
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;
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;
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return rx_char();
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return rx_uchar();
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}
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}
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void
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void
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putDebugChar(int c)
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putDebugChar(int c)
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{
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{
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/* Setup trap TT to go to ROUTINE. */
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/* Setup trap TT to go to ROUTINE. */
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void
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void
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exceptionHandler (int tt, unsigned long routine)
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exceptionHandler (int tt, unsigned long routine)
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{
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{
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#ifndef REVC
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unsigned long *tb = (unsigned long *) 0x40; /* Trap vector base address */
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tb[tt] = ((routine >> 2) | 0xff000000) - tt - (0x40 >> 2);
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#else
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unsigned long *tb = 0; /* Trap vector base address */
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unsigned long *tb = 0; /* Trap vector base address */
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tb[tt] = ((routine >> 2) | 0xff000000) - tt;
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tb[tt] = ((routine >> 2) | 0xff000000) - tt;
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#endif
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}
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}
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/* Return the address of trap TT handler */
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/* Return the address of trap TT handler */
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unsigned long
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unsigned long
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getExceptionHandler (int tt)
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getExceptionHandler (int tt)
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{
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{
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#ifndef REVC
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unsigned long *tb = (unsigned long *) 0x40; /* Trap vector base address */
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return ((tb[tt] + tt + (0x40 >> 2)) | 0xff000000) << 2;
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#else
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unsigned long *tb = 0; /* Trap vector base address */
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unsigned long *tb = 0; /* Trap vector base address */
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return ((tb[tt] + tt) | 0xff000000) << 2;
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return ((tb[tt] + tt) | 0xff000000) << 2;
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#endif
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}
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}
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