1 /* 2 * DaVinci I/O mapping code 3 * 4 * Copyright (C) 2005-2006 Texas Instruments 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 version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #include <linux/module.h> 12 #include <linux/kernel.h> 13 #include <linux/init.h> 14 #include <linux/io.h> 15 16 #include <asm/tlb.h> 17 #include <asm/memory.h> 18 19 #include <asm/mach/map.h> 20 #include <mach/clock.h> 21 22 extern void davinci_check_revision(void); 23 24 /* 25 * The machine specific code may provide the extra mapping besides the 26 * default mapping provided here. 27 */ 28 static struct map_desc davinci_io_desc[] __initdata = { 29 { 30 .virtual = IO_VIRT, 31 .pfn = __phys_to_pfn(IO_PHYS), 32 .length = IO_SIZE, 33 .type = MT_DEVICE 34 }, 35 }; 36 davinci_map_common_io(void)37void __init davinci_map_common_io(void) 38 { 39 iotable_init(davinci_io_desc, ARRAY_SIZE(davinci_io_desc)); 40 41 /* Normally devicemaps_init() would flush caches and tlb after 42 * mdesc->map_io(), but we must also do it here because of the CPU 43 * revision check below. 44 */ 45 local_flush_tlb_all(); 46 flush_cache_all(); 47 48 /* We want to check CPU revision early for cpu_is_xxxx() macros. 49 * IO space mapping must be initialized before we can do that. 50 */ 51 davinci_check_revision(); 52 } 53 davinci_init_common_hw(void)54void __init davinci_init_common_hw(void) 55 { 56 davinci_clk_init(); 57 } 58