1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Atheros AR71XX/AR724X/AR913X specific prom routines 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2015 Laurent Fasnacht <l@libres.ch> 6*4882a593Smuzhiyun * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> 7*4882a593Smuzhiyun * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/kernel.h> 11*4882a593Smuzhiyun #include <linux/init.h> 12*4882a593Smuzhiyun #include <linux/io.h> 13*4882a593Smuzhiyun #include <linux/string.h> 14*4882a593Smuzhiyun #include <linux/initrd.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #include <asm/bootinfo.h> 17*4882a593Smuzhiyun #include <asm/addrspace.h> 18*4882a593Smuzhiyun #include <asm/fw/fw.h> 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #include "common.h" 21*4882a593Smuzhiyun prom_init(void)22*4882a593Smuzhiyunvoid __init prom_init(void) 23*4882a593Smuzhiyun { 24*4882a593Smuzhiyun fw_init_cmdline(); 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #ifdef CONFIG_BLK_DEV_INITRD 27*4882a593Smuzhiyun /* Read the initrd address from the firmware environment */ 28*4882a593Smuzhiyun initrd_start = fw_getenvl("initrd_start"); 29*4882a593Smuzhiyun if (initrd_start) { 30*4882a593Smuzhiyun initrd_start = KSEG0ADDR(initrd_start); 31*4882a593Smuzhiyun initrd_end = initrd_start + fw_getenvl("initrd_size"); 32*4882a593Smuzhiyun } 33*4882a593Smuzhiyun #endif 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun prom_free_prom_memory(void)36*4882a593Smuzhiyunvoid __init prom_free_prom_memory(void) 37*4882a593Smuzhiyun { 38*4882a593Smuzhiyun /* We do not have to prom memory to free */ 39*4882a593Smuzhiyun } 40