LXR linux/arch/mips/boot/compressed/dbg.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * MIPS-specific debug support for pre-boot environment
   4 *
   5 * NOTE: putc() is board specific, if your board have a 16550 compatible uart,
   6 * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you
   7 * need to implement your own putc().
   8 */
   9#include <linux/compiler.h>
  10#include <linux/types.h>
  11
  12void __weak putc(char c)
  13{
  14}
  15
  16void puts(const char *s)
  17{
  18        char c;
  19        while ((c = *s++) != '\0') {
  20                putc(c);
  21                if (c == '\n')
  22                        putc('\r');
  23        }
  24}
  25
  26void puthex(unsigned long long val)
  27{
  28
  29        unsigned char buf[10];
  30        int i;
  31        for (i = 7; i >= 0; i--) {
  32                buf[i] = "0123456789ABCDEF"[val & 0x0F];
  33                val >>= 4;
  34        }
  35        buf[8] = '\0';
  36        puts(buf);
  37}
  38