1 /* 2 * linux/arch/arm/mach-omap2/io.c 3 * 4 * OMAP2 I/O mapping code 5 * 6 * Copyright (C) 2005 Nokia Corporation 7 * Author: Juha Yrj�l� <juha.yrjola@nokia.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 18 #include <asm/tlb.h> 19 #include <asm/io.h> 20 21 #include <asm/mach/map.h> 22 23 #include <asm/arch/mux.h> 24 #include <asm/arch/omapfb.h> 25 26 extern void omap_sram_init(void); 27 extern int omap2_clk_init(void); 28 extern void omap2_check_revision(void); 29 extern void gpmc_init(void); 30 extern void omapfb_reserve_sdram(void); 31 32 /* 33 * The machine specific code may provide the extra mapping besides the 34 * default mapping provided here. 35 */ 36 static struct map_desc omap2_io_desc[] __initdata = { 37 { 38 .virtual = L3_24XX_VIRT, 39 .pfn = __phys_to_pfn(L3_24XX_PHYS), 40 .length = L3_24XX_SIZE, 41 .type = MT_DEVICE 42 }, 43 { 44 .virtual = DSP_MEM_24XX_VIRT, 45 .pfn = __phys_to_pfn(DSP_MEM_24XX_PHYS), 46 .length = DSP_MEM_24XX_SIZE, 47 .type = MT_DEVICE 48 }, 49 { 50 .virtual = DSP_IPI_24XX_VIRT, 51 .pfn = __phys_to_pfn(DSP_IPI_24XX_PHYS), 52 .length = DSP_IPI_24XX_SIZE, 53 .type = MT_DEVICE 54 }, 55 { 56 .virtual = DSP_MMU_24XX_VIRT, 57 .pfn = __phys_to_pfn(DSP_MMU_24XX_PHYS), 58 .length = DSP_MMU_24XX_SIZE, 59 .type = MT_DEVICE 60 } 61 }; 62 63 void __init omap2_map_common_io(void) 64 { 65 iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc)); 66 67 /* Normally devicemaps_init() would flush caches and tlb after 68 * mdesc->map_io(), but we must also do it here because of the CPU 69 * revision check below. 70 */ 71 local_flush_tlb_all(); 72 flush_cache_all(); 73 74 omap2_check_revision(); 75 omap_sram_init(); 76 omapfb_reserve_sdram(); 77 } 78 79 void __init omap2_init_common_hw(void) 80 { 81 omap2_mux_init(); 82 omap2_clk_init(); 83 gpmc_init(); 84 } 85