root/arch/mips/boot/compressed/dbg.c

DEFINITIONS

1. putc
2. puts
3. puthex

   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 
  12 void __weak putc(char c)
  13 {
  14 }
  15 
  16 void 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 
  26 void 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 }