LXR linux/arch/m32r/boot/compressed/m32r

   1/*
   2 * arch/m32r/boot/compressed/m32r_sio.c
   3 *
   4 * 2003-02-12:  Takeo Takahashi
   5 * 2006-11-30:  OPSPUT support by Kazuhiro Inaoka
   6 *
   7 */
   8
   9#include <asm/processor.h>
  10
  11static void putc(char c);
  12
  13static int puts(const char *s)
  14{
  15        char c;
  16        while ((c = *s++)) putc(c);
  17        return 0;
  18}
  19
  20#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT)
  21#include <asm/m32r.h>
  22#include <asm/io.h>
  23
  24#define USE_FPGA_MAP    0
  25
  26#if USE_FPGA_MAP
  27/*
  28 * fpga configuration program uses MMU, and define map as same as
  29 * M32104 uT-Engine board.
  30 */
  31#define BOOT_SIO0STS    (volatile unsigned short *)(0x02c00000 + 0x20006)
  32#define BOOT_SIO0TXB    (volatile unsigned short *)(0x02c00000 + 0x2000c)
  33#else
  34#undef PLD_BASE
  35#if defined(CONFIG_PLAT_OPSPUT)
  36#define PLD_BASE        0x1cc00000
  37#else
  38#define PLD_BASE        0xa4c00000
  39#endif
  40#define BOOT_SIO0STS    PLD_ESIO0STS
  41#define BOOT_SIO0TXB    PLD_ESIO0TXB
  42#endif
  43
  44static void putc(char c)
  45{
  46        while ((*BOOT_SIO0STS & 0x3) != 0x3)
  47                cpu_relax();
  48        if (c == '\n') {
  49                *BOOT_SIO0TXB = '\r';
  50                while ((*BOOT_SIO0STS & 0x3) != 0x3)
  51                        cpu_relax();
  52        }
  53        *BOOT_SIO0TXB = c;
  54}
  55#else /* !(CONFIG_PLAT_M32700UT) */
  56#if defined(CONFIG_PLAT_MAPPI2)
  57#define SIO0STS (volatile unsigned short *)(0xa0efd000 + 14)
  58#define SIO0TXB (volatile unsigned short *)(0xa0efd000 + 30)
  59#else
  60#define SIO0STS (volatile unsigned short *)(0x00efd000 + 14)
  61#define SIO0TXB (volatile unsigned short *)(0x00efd000 + 30)
  62#endif
  63
  64static void putc(char c)
  65{
  66        while ((*SIO0STS & 0x1) == 0)
  67                cpu_relax();
  68        if (c == '\n') {
  69                *SIO0TXB = '\r';
  70                while ((*SIO0STS & 0x1) == 0)
  71                        cpu_relax();
  72        }
  73        *SIO0TXB = c;
  74}
  75#endif
  76