1 /* 2 * s390x io implementation 3 * 4 * Copyright (c) 2017 Red Hat Inc 5 * 6 * Authors: 7 * Thomas Huth <thuth@redhat.com> 8 * David Hildenbrand <david@redhat.com> 9 * 10 * This code is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU Library General Public License version 2. 12 */ 13 #include <libcflat.h> 14 #include <argv.h> 15 #include <asm/spinlock.h> 16 #include <asm/facility.h> 17 #include <asm/sigp.h> 18 #include "sclp.h" 19 20 extern char ipl_args[]; 21 uint8_t stfl_bytes[NR_STFL_BYTES] __attribute__((aligned(8))); 22 23 static struct spinlock lock; 24 25 void setup(void); 26 27 void puts(const char *s) 28 { 29 spin_lock(&lock); 30 sclp_print(s); 31 spin_unlock(&lock); 32 } 33 34 void setup(void) 35 { 36 setup_args_progname(ipl_args); 37 setup_facilities(); 38 sclp_console_setup(); 39 sclp_memory_setup(); 40 } 41 42 void exit(int code) 43 { 44 printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1); 45 while (1) { 46 sigp_stop(); 47 } 48 } 49