Cregit: Linux 5.13: ofconsole.c

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
David Gibson	130	90.28%	2	40.00%
Cédric Le Goater	11	7.64%	1	20.00%
Thomas Gleixner	2	1.39%	1	20.00%
Geoff Levand	1	0.69%	1	20.00%
Total	144		5

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * OF console routines
 *
 * Copyright (C) Paul Mackerras 1997.
 */
#include <stddef.h>
#include "types.h"
#include "elf.h"
#include "string.h"
#include "stdio.h"
#include "page.h"
#include "ops.h"

#include "of.h"

static unsigned int of_stdout_handle;

static int of_console_open(void)
{
	void *devp;

	if (((devp = of_finddevice("/chosen")) != NULL)
	    && (of_getprop(devp, "stdout", &of_stdout_handle,
			   sizeof(of_stdout_handle))
		== sizeof(of_stdout_handle))) {
		of_stdout_handle = be32_to_cpu(of_stdout_handle);
		return 0;
	}

	return -1;
}

static void of_console_write(const char *buf, int len)
{
	of_call_prom("write", 3, 1, of_stdout_handle, buf, len);
}

void of_console_init(void)
{
	console_ops.open = of_console_open;
	console_ops.write = of_console_write;
}