1*d4a67d9dSGabor Juhos /* 2*d4a67d9dSGabor Juhos * Atheros AR71XX/AR724X/AR913X specific prom routines 3*d4a67d9dSGabor Juhos * 4*d4a67d9dSGabor Juhos * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> 5*d4a67d9dSGabor Juhos * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> 6*d4a67d9dSGabor Juhos * 7*d4a67d9dSGabor Juhos * This program is free software; you can redistribute it and/or modify it 8*d4a67d9dSGabor Juhos * under the terms of the GNU General Public License version 2 as published 9*d4a67d9dSGabor Juhos * by the Free Software Foundation. 10*d4a67d9dSGabor Juhos */ 11*d4a67d9dSGabor Juhos 12*d4a67d9dSGabor Juhos #include <linux/kernel.h> 13*d4a67d9dSGabor Juhos #include <linux/init.h> 14*d4a67d9dSGabor Juhos #include <linux/io.h> 15*d4a67d9dSGabor Juhos #include <linux/string.h> 16*d4a67d9dSGabor Juhos 17*d4a67d9dSGabor Juhos #include <asm/bootinfo.h> 18*d4a67d9dSGabor Juhos #include <asm/addrspace.h> 19*d4a67d9dSGabor Juhos 20*d4a67d9dSGabor Juhos #include "common.h" 21*d4a67d9dSGabor Juhos 22*d4a67d9dSGabor Juhos static inline int is_valid_ram_addr(void *addr) 23*d4a67d9dSGabor Juhos { 24*d4a67d9dSGabor Juhos if (((u32) addr > KSEG0) && 25*d4a67d9dSGabor Juhos ((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX))) 26*d4a67d9dSGabor Juhos return 1; 27*d4a67d9dSGabor Juhos 28*d4a67d9dSGabor Juhos if (((u32) addr > KSEG1) && 29*d4a67d9dSGabor Juhos ((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX))) 30*d4a67d9dSGabor Juhos return 1; 31*d4a67d9dSGabor Juhos 32*d4a67d9dSGabor Juhos return 0; 33*d4a67d9dSGabor Juhos } 34*d4a67d9dSGabor Juhos 35*d4a67d9dSGabor Juhos static __init void ath79_prom_init_cmdline(int argc, char **argv) 36*d4a67d9dSGabor Juhos { 37*d4a67d9dSGabor Juhos int i; 38*d4a67d9dSGabor Juhos 39*d4a67d9dSGabor Juhos if (!is_valid_ram_addr(argv)) 40*d4a67d9dSGabor Juhos return; 41*d4a67d9dSGabor Juhos 42*d4a67d9dSGabor Juhos for (i = 0; i < argc; i++) 43*d4a67d9dSGabor Juhos if (is_valid_ram_addr(argv[i])) { 44*d4a67d9dSGabor Juhos strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); 45*d4a67d9dSGabor Juhos strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline)); 46*d4a67d9dSGabor Juhos } 47*d4a67d9dSGabor Juhos } 48*d4a67d9dSGabor Juhos 49*d4a67d9dSGabor Juhos void __init prom_init(void) 50*d4a67d9dSGabor Juhos { 51*d4a67d9dSGabor Juhos ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1); 52*d4a67d9dSGabor Juhos } 53*d4a67d9dSGabor Juhos 54*d4a67d9dSGabor Juhos void __init prom_free_prom_memory(void) 55*d4a67d9dSGabor Juhos { 56*d4a67d9dSGabor Juhos /* We do not have to prom memory to free */ 57*d4a67d9dSGabor Juhos } 58