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. otherwise, you
   7  * need to implement your own putc().
   8  */
   9 #include <linux/compiler.h>
  10 #include <linux/types.h>
  11
  12 #include "decompress.h"
  13
  14 void __weak putc(char c)
  15 {
  16 }
  17
  18 void puts(const char *s)
  19 {
  20         char c;
  21         while ((c = *s++) != '\0') {
  22                 putc(c);
  23                 if (c == '\n')
  24                         putc('\r');
  25         }
  26 }
  27
  28 void puthex(unsigned long long val)
  29 {
  30
  31         unsigned char buf[10];
  32         int i;
  33         for (i = 7; i >= 0; i--) {
  34                 buf[i] = "0123456789ABCDEF"[val & 0x0F];
  35                 val >>= 4;
  36         }
  37         buf[8] = '\0';
  38         puts(buf);
  39 }