m32r_sio.c

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/*
 * arch/m32r/boot/compressed/m32r_sio.c
 *
 * 2003-02-12:  Takeo Takahashi
 * 2006-11-30:  OPSPUT support by Kazuhiro Inaoka
 *
 */

#include <asm/processor.h>

static void putc(char c);

static int puts(const char *s)
{
    char c;
    while ((c = *s++)) putc(c);
    return 0;
}

#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT)
#include <asm/m32r.h>
#include <asm/io.h>

#define USE_FPGA_MAP    0

#if USE_FPGA_MAP
/*
 * fpga configuration program uses MMU, and define map as same as
 * M32104 uT-Engine board.
 */
#define BOOT_SIO0STS    (volatile unsigned short *)(0x02c00000 + 0x20006)
#define BOOT_SIO0TXB    (volatile unsigned short *)(0x02c00000 + 0x2000c)
#else
#undef PLD_BASE
#if defined(CONFIG_PLAT_OPSPUT)
#define PLD_BASE    0x1cc00000
#else
#define PLD_BASE    0xa4c00000
#endif
#define BOOT_SIO0STS    PLD_ESIO0STS
#define BOOT_SIO0TXB    PLD_ESIO0TXB
#endif

static void putc(char c)
{
    while ((*BOOT_SIO0STS & 0x3) != 0x3)
        cpu_relax();
    if (c == '\n') {
        *BOOT_SIO0TXB = '\r';
        while ((*BOOT_SIO0STS & 0x3) != 0x3)
            cpu_relax();
    }
    *BOOT_SIO0TXB = c;
}
#else /* !(CONFIG_PLAT_M32700UT) */
#if defined(CONFIG_PLAT_MAPPI2)
#define SIO0STS (volatile unsigned short *)(0xa0efd000 + 14)
#define SIO0TXB (volatile unsigned short *)(0xa0efd000 + 30)
#else
#define SIO0STS (volatile unsigned short *)(0x00efd000 + 14)
#define SIO0TXB (volatile unsigned short *)(0x00efd000 + 30)
#endif

static void putc(char c)
{
    while ((*SIO0STS & 0x1) == 0)
        cpu_relax();
    if (c == '\n') {
        *SIO0TXB = '\r';
        while ((*SIO0STS & 0x1) == 0)
            cpu_relax();
    }
    *SIO0TXB = c;
}
#endif