blob: cb7f2f050f4216ae351590acf7a9a27959bd0ab5 [file] [log] [blame]
/*
* Each architecture must implement puts() and exit().
*
* Copyright (C) 2016, Red Hat Inc, Andrew Jones <drjones@redhat.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.
*/
#include <libcflat.h>
#include <asm/spinlock.h>
#include <asm/rtas.h>
#include <asm/setup.h>
#include <asm/processor.h>
#include <asm/atomic.h>
#include "io.h"
static struct spinlock print_lock;
void putchar(int c)
{
if (machine_is_powernv())
opal_putchar(c);
else
papr_putchar(c);
}
int __getchar(void)
{
if (machine_is_powernv())
return __opal_getchar();
else
return __papr_getchar();
}
void io_init(void)
{
if (machine_is_powernv())
assert(!opal_init());
else
rtas_init();
}
void puts(const char *s)
{
spin_lock(&print_lock);
while (*s)
putchar(*s++);
spin_unlock(&print_lock);
}
/*
* Defining halt to take 'code' as an argument guarantees that it will
* be in r3 when we halt. That gives us a final chance to see the exit
* status while inspecting the halted unit test state.
*/
extern void halt(int code);
void exit(int code)
{
static int exited = 0;
// FIXME: change this print-exit/rtas-poweroff to chr_testdev_exit(),
// maybe by plugging chr-testdev into a spapr-vty.
if (atomic_fetch_inc(&exited) == 0) {
printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1);
if (machine_is_powernv())
opal_power_off();
else
rtas_power_off();
}
halt(code);
__builtin_unreachable();
}