1/* 2 * init.c, Common initialization routines for NEC VR4100 series. 3 * 4 * Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20#include <linux/init.h> 21#include <linux/ioport.h> 22#include <linux/irq.h> 23#include <linux/string.h> 24 25#include <asm/bootinfo.h> 26#include <asm/time.h> 27#include <asm/vr41xx/irq.h> 28#include <asm/vr41xx/vr41xx.h> 29 30#define IO_MEM_RESOURCE_START 0UL 31#define IO_MEM_RESOURCE_END 0x1fffffffUL 32 33static void __init iomem_resource_init(void) 34{ 35 iomem_resource.start = IO_MEM_RESOURCE_START; 36 iomem_resource.end = IO_MEM_RESOURCE_END; 37} 38 39void __init plat_time_init(void) 40{ 41 unsigned long tclock; 42 43 vr41xx_calculate_clock_frequency(); 44 45 tclock = vr41xx_get_tclock_frequency(); 46 if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 || 47 current_cpu_data.processor_id == PRID_VR4131_REV2_1) 48 mips_hpt_frequency = tclock / 2; 49 else 50 mips_hpt_frequency = tclock / 4; 51} 52 53void __init plat_mem_setup(void) 54{ 55 iomem_resource_init(); 56 57 vr41xx_siu_setup(); 58} 59 60void __init prom_init(void) 61{ 62 int argc, i; 63 char **argv; 64 65 argc = fw_arg0; 66 argv = (char **)fw_arg1; 67 68 for (i = 1; i < argc; i++) { 69 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); 70 if (i < (argc - 1)) 71 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); 72 } 73} 74 75void __init prom_free_prom_memory(void) 76{ 77} 78