162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * OF console routines 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) Paul Mackerras 1997. 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci#include <stddef.h> 862306a36Sopenharmony_ci#include "types.h" 962306a36Sopenharmony_ci#include "elf.h" 1062306a36Sopenharmony_ci#include "string.h" 1162306a36Sopenharmony_ci#include "stdio.h" 1262306a36Sopenharmony_ci#include "page.h" 1362306a36Sopenharmony_ci#include "ops.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci#include "of.h" 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_cistatic unsigned int of_stdout_handle; 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_cistatic int of_console_open(void) 2062306a36Sopenharmony_ci{ 2162306a36Sopenharmony_ci void *devp; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci if (((devp = of_finddevice("/chosen")) != NULL) 2462306a36Sopenharmony_ci && (of_getprop(devp, "stdout", &of_stdout_handle, 2562306a36Sopenharmony_ci sizeof(of_stdout_handle)) 2662306a36Sopenharmony_ci == sizeof(of_stdout_handle))) { 2762306a36Sopenharmony_ci of_stdout_handle = be32_to_cpu(of_stdout_handle); 2862306a36Sopenharmony_ci return 0; 2962306a36Sopenharmony_ci } 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci return -1; 3262306a36Sopenharmony_ci} 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistatic void of_console_write(const char *buf, int len) 3562306a36Sopenharmony_ci{ 3662306a36Sopenharmony_ci of_call_prom("write", 3, 1, of_stdout_handle, buf, len); 3762306a36Sopenharmony_ci} 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_civoid of_console_init(void) 4062306a36Sopenharmony_ci{ 4162306a36Sopenharmony_ci console_ops.open = of_console_open; 4262306a36Sopenharmony_ci console_ops.write = of_console_write; 4362306a36Sopenharmony_ci} 44