mirror of https://gitee.com/openkylin/linux.git
44 lines
830 B
C
44 lines
830 B
C
// 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;
|
|
}
|