arch/m32r/boot/compressed/m32r_sio.c

   1 /*
   2  * arch/m32r/boot/compressed/m32r_sio.c
   3  *
   4  * 2003-02-12:  Takeo Takahashi
   5  *
   6  */
   7
   8 #include <linux/config.h>
   9
  10 static void putc(char c);
  11
  12 static int puts(const char *s)
  13 {
  14         char c;
  15         while ((c = *s++)) putc(c);
  16         return 0;
  17 }
  18
  19 #if defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_M32700UT)
  20 #include <asm/m32r.h>
  21 #include <asm/io.h>
  22
  23 #define USE_FPGA_MAP    0
  24
  25 #if USE_FPGA_MAP
  26 /*
  27  * fpga configuration program uses MMU, and define map as same as
  28  * M32104 uT-Engine board.
  29  */
  30 #define BOOT_SIO0STS    (volatile unsigned short *)(0x02c00000 + 0x20006)
  31 #define BOOT_SIO0TXB    (volatile unsigned short *)(0x02c00000 + 0x2000c)
  32 #else
  33 #undef PLD_BASE
  34 #define PLD_BASE        0xa4c00000
  35 #define BOOT_SIO0STS    PLD_ESIO0STS
  36 #define BOOT_SIO0TXB    PLD_ESIO0TXB
  37 #endif
  38
  39 static void putc(char c)
  40 {
  41
  42         while ((*BOOT_SIO0STS & 0x3) != 0x3) ;
  43         if (c == '\n') {
  44                 *BOOT_SIO0TXB = '\r';
  45                 while ((*BOOT_SIO0STS & 0x3) != 0x3) ;
  46         }
  47         *BOOT_SIO0TXB = c;
  48 }
  49 #else /* defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_M32700UT) */
  50 #ifdef CONFIG_MMU
  51 #define SIO0STS (volatile unsigned short *)(0xa0efd000 + 14)
  52 #define SIO0TXB (volatile unsigned short *)(0xa0efd000 + 30)
  53 #else
  54 #define SIO0STS (volatile unsigned short *)(0x00efd000 + 14)
  55 #define SIO0TXB (volatile unsigned short *)(0x00efd000 + 30)
  56 #endif
  57
  58 static void putc(char c)
  59 {
  60
  61         while ((*SIO0STS & 0x1) == 0) ;
  62         if (c == '\n') {
  63                 *SIO0TXB = '\r';
  64                 while ((*SIO0STS & 0x1) == 0) ;
  65         }
  66         *SIO0TXB = c;
  67 }
  68 #endif