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
putc(char c)12 void __weak putc(char c)
13 {
14 }
15
puts(const char * s)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
puthex(unsigned long long val)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 }
38