diff options
Diffstat (limited to 'cpu/arm920t/serial.c')
| -rw-r--r-- | cpu/arm920t/serial.c | 98 |
1 files changed, 38 insertions, 60 deletions
diff --git a/cpu/arm920t/serial.c b/cpu/arm920t/serial.c index c32e73b..10cfade 100644 --- a/cpu/arm920t/serial.c +++ b/cpu/arm920t/serial.c @@ -25,57 +25,51 @@ #include <s3c2410.h> #endif +#ifdef CONFIG_SERIAL1 +#define UART_NR S3C24X0_UART0 + +#elif CONFIG_SERIAL2 +# if defined(CONFIG_TRAB) +# #error "TRAB supports only CONFIG_SERIAL1" +# endif +#define UART_NR S3C24X0_UART1 + +#elif CONFIG_SERIAL3 +# if defined(CONFIG_TRAB) +# #error "TRAB supports only CONFIG_SERIAL1" +# endif +#define UART_NR S3C24X0_UART2 + +#else +#error "Bad: you didn't configure serial ..." +#endif void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; - + S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); int i; unsigned int reg = 0; /* value is calculated so : (int)(PCLK/16./baudrate) -1 */ reg = get_PCLK() / (16 * gd->baudrate) - 1; -#ifdef CONFIG_SERIAL1 /* FIFO enable, Tx/Rx FIFO clear */ - rUFCON0 = 0x07; - rUMCON0 = 0x0; + uart->UFCON = 0x07; + uart->UMCON = 0x0; /* Normal,No parity,1 stop,8 bit */ - rULCON0 = 0x3; + uart->ULCON = 0x3; /* * tx=level,rx=edge,disable timeout int.,enable rx error int., * normal,interrupt or polling */ - rUCON0 = 0x245; - rUBRDIV0 = reg; + uart->UCON = 0x245; + uart->UBRDIV = reg; #ifdef CONFIG_HWFLOW - rUMCON0 = 0x1; /* RTS up */ + uart->UMCON = 0x1; /* RTS up */ #endif for (i = 0; i < 100; i++); -#elif CONFIG_SERIAL2 -# if defined(CONFIG_TRAB) -# #error "TRAB supports only CONFIG_SERIAL1" -# endif - /* FIFO enable, Tx/Rx FIFO clear */ - rUFCON1 = 0x06; - rUMCON1 = 0x0; - /* Normal,No parity,1 stop,8 bit */ - rULCON1 = 0x3; - /* - * tx=level,rx=edge,disable timeout int.,enable rx error int., - * normal,interrupt or polling - */ - rUCON1 = 0x245; - rUBRDIV1 = reg; - -#ifdef CONFIG_HWFLOW - rUMCON1 = 0x1; /* RTS up */ -#endif - for (i = 0; i < 100; i++); -#else -#error "Bad: you didn't configure serial ..." -#endif } /* @@ -97,15 +91,12 @@ int serial_init (void) */ int serial_getc (void) { -#ifdef CONFIG_SERIAL1 - while (!(rUTRSTAT0 & 0x1)); + S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); + + /* wait for character to arrive */ + while (!(uart->UTRSTAT & 0x1)); - return rURXH0 & 0xff; -#elif CONFIG_SERIAL2 - while (!(rUTRSTAT1 & 0x1)); - - return rURXH1 & 0xff; -#endif + return uart->URXH & 0xff; } #ifdef CONFIG_HWFLOW @@ -146,33 +137,22 @@ void enable_putc(void) */ void serial_putc (const char c) { + S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); #ifdef CONFIG_MODEM_SUPPORT if (be_quiet) return; #endif -#ifdef CONFIG_SERIAL1 - /* wait for room in the tx FIFO on SERIAL1 */ - while (!(rUTRSTAT0 & 0x2)); + /* wait for room in the tx FIFO */ + while (!(uart->UTRSTAT & 0x2)); #ifdef CONFIG_HWFLOW /* Wait for CTS up */ - while(hwflow && !(rUMSTAT0 & 0x1)) + while(hwflow && !(uart->UMSTAT & 0x1)) ; #endif - rUTXH0 = c; -#elif CONFIG_SERIAL2 - /* wait for room in the tx FIFO on SERIAL2 */ - while (!(rUTRSTAT1 & 0x2)); - -#ifdef CONFIG_HWFLOW - /* Wait for CTS up */ - while(hwflow && !(rUMSTAT1 & 0x1)) - ; -#endif - rUTXH1 = c; -#endif + uart->UTXH = c; /* If \n, also do \r */ if (c == '\n') @@ -184,11 +164,9 @@ void serial_putc (const char c) */ int serial_tstc (void) { -#ifdef CONFIG_SERIAL1 - return rUTRSTAT0 & 0x1; -#elif CONFIG_SERIAL2 - return rUTRSTAT1 & 0x1; -#endif + S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); + + return uart->UTRSTAT & 0x1; } void |