162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Atheros AR71XX/AR724X/AR913X specific prom routines 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 2015 Laurent Fasnacht <l@libres.ch> 662306a36Sopenharmony_ci * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> 762306a36Sopenharmony_ci * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> 862306a36Sopenharmony_ci */ 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#include <linux/kernel.h> 1162306a36Sopenharmony_ci#include <linux/init.h> 1262306a36Sopenharmony_ci#include <linux/io.h> 1362306a36Sopenharmony_ci#include <linux/string.h> 1462306a36Sopenharmony_ci#include <linux/initrd.h> 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci#include <asm/bootinfo.h> 1762306a36Sopenharmony_ci#include <asm/addrspace.h> 1862306a36Sopenharmony_ci#include <asm/fw/fw.h> 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci#include "common.h" 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_civoid __init prom_init(void) 2362306a36Sopenharmony_ci{ 2462306a36Sopenharmony_ci fw_init_cmdline(); 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci#ifdef CONFIG_BLK_DEV_INITRD 2762306a36Sopenharmony_ci /* Read the initrd address from the firmware environment */ 2862306a36Sopenharmony_ci initrd_start = fw_getenvl("initrd_start"); 2962306a36Sopenharmony_ci if (initrd_start) { 3062306a36Sopenharmony_ci initrd_start = KSEG0ADDR(initrd_start); 3162306a36Sopenharmony_ci initrd_end = initrd_start + fw_getenvl("initrd_size"); 3262306a36Sopenharmony_ci } 3362306a36Sopenharmony_ci#endif 3462306a36Sopenharmony_ci} 35