dbg.c

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/*
 * MIPS-specific debug support for pre-boot environment
 *
 * NOTE: putc() is board specific, if your board have a 16550 compatible uart,
 * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you
 * need to implement your own putc().
 */
#include <linux/compiler.h>
#include <linux/init.h>
#include <linux/types.h>

void __weak putc(char c)
{
}

void puts(const char *s)
{
    char c;
    while ((c = *s++) != '\0') {
        putc(c);
        if (c == '\n')
            putc('\r');
    }
}

void puthex(unsigned long long val)
{

    unsigned char buf[10];
    int i;
    for (i = 7; i >= 0; i--) {
        buf[i] = "0123456789ABCDEF"[val & 0x0F];
        val >>= 4;
    }
    buf[8] = '\0';
    puts(buf);
}