inmates/lib/arm/printk.c

   1 /*
   2  * Jailhouse, a Linux-based partitioning hypervisor
   3  *
   4  * Copyright (c) ARM Limited, 2014
   5  *
   6  * Authors:
   7  *  Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  */
  12
  13 #include <inmate.h>
  14 #include <asm/debug.h>
  15 #include <stdarg.h>
  16
  17 static struct uart_chip chip;
  18
  19 static void console_write(const char *msg)
  20 {
  21         char c = 0;
  22
  23         while (1) {
  24                 if (c == '\n')
  25                         c = '\r';
  26                 else
  27                         c = *msg++;
  28                 if (!c)
  29                         break;
  30
  31                 chip.wait(&chip);
  32                 chip.write(&chip, c);
  33                 chip.busy(&chip);
  34         }
  35 }
  36
  37 #include "../../../hypervisor/printk-core.c"
  38
  39 void printk(const char *fmt, ...)
  40 {
  41         static bool inited = false;
  42         va_list ap;
  43
  44         if (!inited) {
  45                 uart_chip_init(&chip);
  46                 inited = true;
  47         }
  48
  49         va_start(ap, fmt);
  50
  51         __vprintk(fmt, ap);
  52
  53         va_end(ap);
  54 }