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/* ram_console.c - Console messages to a RAM buffer */
/*
* Copyright (c) 2015 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <kernel.h>
#include <sys/printk.h>
#include <device.h>
#include <init.h>
extern void __printk_hook_install(int (*fn)(int));
extern void __stdout_hook_install(int (*fn)(int));
/* Extra byte to ensure we're always NULL-terminated */
char ram_console[CONFIG_RAM_CONSOLE_BUFFER_SIZE + 1];
static int pos;
static int ram_console_out(int character)
{
ram_console[pos] = (char)character;
pos = (pos + 1) % CONFIG_RAM_CONSOLE_BUFFER_SIZE;
return character;
}
static int ram_console_init(const struct device *d)
{
ARG_UNUSED(d);
__printk_hook_install(ram_console_out);
__stdout_hook_install(ram_console_out);
return 0;
}
SYS_INIT(ram_console_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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