arch/nios2nommu/boot/compressed/nios2_sio.c

   1
   2 static int putchar(int ch);
   3
   4 static int puts(const char *s)
   5         {
   6         while(*s)
   7                 putchar(*s++);
   8         return 0;
   9         }
  10
  11 #include <asm/nios.h>
  12 #include <asm/io.h>
  13
  14 #if defined(CONFIG_SERIAL_AJUART_CONSOLE)
  15
  16 #define IORD_ALTERA_AVALON_JTAG_UART_DATA(base)           inl(base)
  17 #define IOWR_ALTERA_AVALON_JTAG_UART_DATA(base, data)     outl(data, base)
  18 #define IORD_ALTERA_AVALON_JTAG_UART_CONTROL(base)        inl(base+4)
  19 #define IOWR_ALTERA_AVALON_JTAG_UART_CONTROL(base, data)  outl(data, base+4)
  20 #define ALTERA_AVALON_JTAG_UART_CONTROL_WSPACE_MSK        (0xFFFF0000u)
  21 #define ALTERA_AVALON_JTAG_UART_CONTROL_WSPACE_OFST       (16)
  22
  23 static void jtag_putc(int ch)
  24 {
  25   unsigned base = na_jtag_uart;
  26   while ((IORD_ALTERA_AVALON_JTAG_UART_CONTROL(base) & ALTERA_AVALON_JTAG_UART_CONTROL_WSPACE_MSK) == 0);
  27   IOWR_ALTERA_AVALON_JTAG_UART_DATA(base, ch);
  28 }
  29
  30 static int putchar(int ch)
  31 {
  32    jtag_putc( ch );
  33    return ch;
  34 }
  35
  36 #elif defined(CONFIG_NIOS_SERIAL_CONSOLE)
  37
  38 static void nr_txchar(int ch)
  39 {
  40   while ((na_uart0->np_uartstatus & np_uartstatus_trdy_mask) == 0);
  41   na_uart0->np_uarttxdata = ch;
  42 }
  43
  44 static int putchar(int ch)
  45 {
  46    nr_txchar( ch ); if (ch=='\n') nr_txchar( '\r' );
  47    return ch;
  48 }
  49
  50 #else
  51
  52 static int putchar(int ch)
  53 {
  54    return ch;
  55 }
  56
  57 #endif