1 /* 2 * Atheros AR71XX/AR724X/AR913X specific prom routines 3 * 4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> 5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published 9 * by the Free Software Foundation. 10 */ 11 12 #include <linux/kernel.h> 13 #include <linux/init.h> 14 #include <linux/io.h> 15 #include <linux/string.h> 16 #include <linux/initrd.h> 17 18 #include <asm/bootinfo.h> 19 #include <asm/addrspace.h> 20 #include <asm/fw/fw.h> 21 22 #include "common.h" 23 24 void __init prom_init(void) 25 { 26 fw_init_cmdline(); 27 28 /* Read the initrd address from the firmware environment */ 29 initrd_start = fw_getenvl("initrd_start"); 30 if (initrd_start) { 31 initrd_start = KSEG0ADDR(initrd_start); 32 initrd_end = initrd_start + fw_getenvl("initrd_size"); 33 } 34 } 35 36 void __init prom_free_prom_memory(void) 37 { 38 /* We do not have to prom memory to free */ 39 } 40