prom.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Atheros AR71XX/AR724X/AR913X specific prom routines
 *
 *  Copyright (C) 2015 Laurent Fasnacht <[email protected]>
 *  Copyright (C) 2008-2010 Gabor Juhos <[email protected]>
 *  Copyright (C) 2008 Imre Kaloz <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/string.h>
#include <linux/initrd.h>

#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/fw/fw.h>

#include "common.h"

void __init prom_init(void)
{
	fw_init_cmdline();

#ifdef CONFIG_BLK_DEV_INITRD
	/* Read the initrd address from the firmware environment */
	initrd_start = fw_getenvl("initrd_start");
	if (initrd_start) {
		initrd_start = KSEG0ADDR(initrd_start);
		initrd_end = initrd_start + fw_getenvl("initrd_size");
	}
#endif
}