1 /* 2 * Each architecture must implement puts() and exit(). 3 * 4 * Copyright (C) 2016, Red Hat Inc, Andrew Jones <drjones@redhat.com> 5 * 6 * This work is licensed under the terms of the GNU LGPL, version 2. 7 */ 8 #include <libcflat.h> 9 #include <asm/spinlock.h> 10 #include <asm/rtas.h> 11 #include <asm/setup.h> 12 #include "io.h" 13 14 extern void halt(int code); 15 16 static struct spinlock print_lock; 17 18 void io_init(void) 19 { 20 rtas_init(); 21 } 22 23 void puts(const char *s) 24 { 25 spin_lock(&print_lock); 26 while (*s) 27 putchar(*s++); 28 spin_unlock(&print_lock); 29 } 30 31 void exit(int code) 32 { 33 // FIXME: change this print-exit/rtas-poweroff to chr_testdev_exit(), 34 // maybe by plugging chr-testdev into a spapr-vty. 35 printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1); 36 rtas_power_off(); 37 halt(code); 38 __builtin_unreachable(); 39 } 40