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 omap2_init_memory(void); 30 extern void gpmc_init(void); 31 extern void omapfb_reserve_sdram(void); 32 33 /* 34 * The machine specific code may provide the extra mapping besides the 35 * default mapping provided here. 36 */ 37 static struct map_desc omap2_io_desc[] __initdata = { 38 { 39 .virtual = L3_24XX_VIRT, 40 .pfn = __phys_to_pfn(L3_24XX_PHYS), 41 .length = L3_24XX_SIZE, 42 .type = MT_DEVICE 43 }, 44 { 45 .virtual = DSP_MEM_24XX_VIRT, 46 .pfn = __phys_to_pfn(DSP_MEM_24XX_PHYS), 47 .length = DSP_MEM_24XX_SIZE, 48 .type = MT_DEVICE 49 }, 50 { 51 .virtual = DSP_IPI_24XX_VIRT, 52 .pfn = __phys_to_pfn(DSP_IPI_24XX_PHYS), 53 .length = DSP_IPI_24XX_SIZE, 54 .type = MT_DEVICE 55 }, 56 { 57 .virtual = DSP_MMU_24XX_VIRT, 58 .pfn = __phys_to_pfn(DSP_MMU_24XX_PHYS), 59 .length = DSP_MMU_24XX_SIZE, 60 .type = MT_DEVICE 61 } 62 }; 63 64 void __init omap2_map_common_io(void) 65 { 66 iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc)); 67 68 /* Normally devicemaps_init() would flush caches and tlb after 69 * mdesc->map_io(), but we must also do it here because of the CPU 70 * revision check below. 71 */ 72 local_flush_tlb_all(); 73 flush_cache_all(); 74 75 omap2_check_revision(); 76 omap_sram_init(); 77 omapfb_reserve_sdram(); 78 } 79 80 void __init omap2_init_common_hw(void) 81 { 82 omap2_mux_init(); 83 omap2_clk_init(); 84 omap2_init_memory(); 85 gpmc_init(); 86 } 87