setup.c revision 4af92e7a68af7b515d274f9d33b14b8a0804a0f6
1/* 2 * This program is free software; you can redistribute it and/or modify it 3 * under the terms of the GNU General Public License version 2 as published 4 * by the Free Software Foundation. 5 * 6 * Copyright (C) 2010 John Crispin <blogic@openwrt.org> 7 */ 8 9#include <linux/kernel.h> 10#include <linux/export.h> 11#include <linux/io.h> 12#include <linux/ioport.h> 13#include <asm/bootinfo.h> 14 15#include <lantiq_soc.h> 16 17#include "machtypes.h" 18#include "devices.h" 19#include "prom.h" 20 21void __init plat_mem_setup(void) 22{ 23 /* assume 16M as default incase uboot fails to pass proper ramsize */ 24 unsigned long memsize = 16; 25 char **envp = (char **) KSEG1ADDR(fw_arg2); 26 27 ioport_resource.start = IOPORT_RESOURCE_START; 28 ioport_resource.end = IOPORT_RESOURCE_END; 29 iomem_resource.start = IOMEM_RESOURCE_START; 30 iomem_resource.end = IOMEM_RESOURCE_END; 31 32 set_io_port_base((unsigned long) KSEG1); 33 34 while (*envp) { 35 char *e = (char *)KSEG1ADDR(*envp); 36 if (!strncmp(e, "memsize=", 8)) { 37 e += 8; 38 if (strict_strtoul(e, 0, &memsize)) 39 pr_warn("bad memsize specified\n"); 40 } 41 envp++; 42 } 43 memsize *= 1024 * 1024; 44 add_memory_region(0x00000000, memsize, BOOT_MEM_RAM); 45} 46 47static int __init 48lantiq_setup(void) 49{ 50 ltq_soc_setup(); 51 mips_machine_setup(); 52 return 0; 53} 54 55arch_initcall(lantiq_setup); 56 57static void __init 58lantiq_generic_init(void) 59{ 60 /* Nothing to do */ 61} 62 63MIPS_MACHINE(LTQ_MACH_GENERIC, 64 "Generic", 65 "Generic Lantiq based board", 66 lantiq_generic_init); 67