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 * Updated map desc to add 2430 support : <x0khasim@ti.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/kernel.h> 17 #include <linux/init.h> 18 19 #include <asm/tlb.h> 20 #include <asm/io.h> 21 22 #include <asm/mach/map.h> 23 24 #include <asm/arch/mux.h> 25 #include <asm/arch/omapfb.h> 26 27 extern void omap_sram_init(void); 28 extern int omap2_clk_init(void); 29 extern void omap2_check_revision(void); 30 extern void omap2_init_memory(void); 31 extern void gpmc_init(void); 32 extern void omapfb_reserve_sdram(void); 33 34 /* 35 * The machine specific code may provide the extra mapping besides the 36 * default mapping provided here. 37 */ 38 static struct map_desc omap2_io_desc[] __initdata = { 39 { 40 .virtual = L3_24XX_VIRT, 41 .pfn = __phys_to_pfn(L3_24XX_PHYS), 42 .length = L3_24XX_SIZE, 43 .type = MT_DEVICE 44 }, 45 #ifdef CONFIG_ARCH_OMAP2430 46 { 47 .virtual = L4_WK_243X_VIRT, 48 .pfn = __phys_to_pfn(L4_WK_243X_PHYS), 49 .length = L4_WK_243X_SIZE, 50 .type = MT_DEVICE 51 }, 52 { 53 .virtual = OMAP243X_GPMC_VIRT, 54 .pfn = __phys_to_pfn(OMAP243X_GPMC_PHYS), 55 .length = OMAP243X_GPMC_SIZE, 56 .type = MT_DEVICE 57 }, 58 #endif 59 { 60 .virtual = DSP_MEM_24XX_VIRT, 61 .pfn = __phys_to_pfn(DSP_MEM_24XX_PHYS), 62 .length = DSP_MEM_24XX_SIZE, 63 .type = MT_DEVICE 64 }, 65 { 66 .virtual = DSP_IPI_24XX_VIRT, 67 .pfn = __phys_to_pfn(DSP_IPI_24XX_PHYS), 68 .length = DSP_IPI_24XX_SIZE, 69 .type = MT_DEVICE 70 }, 71 { 72 .virtual = DSP_MMU_24XX_VIRT, 73 .pfn = __phys_to_pfn(DSP_MMU_24XX_PHYS), 74 .length = DSP_MMU_24XX_SIZE, 75 .type = MT_DEVICE 76 } 77 }; 78 79 void __init omap2_map_common_io(void) 80 { 81 iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc)); 82 83 /* Normally devicemaps_init() would flush caches and tlb after 84 * mdesc->map_io(), but we must also do it here because of the CPU 85 * revision check below. 86 */ 87 local_flush_tlb_all(); 88 flush_cache_all(); 89 90 omap2_check_revision(); 91 omap_sram_init(); 92 omapfb_reserve_sdram(); 93 } 94 95 void __init omap2_init_common_hw(void) 96 { 97 omap2_mux_init(); 98 omap2_clk_init(); 99 /* 100 * Need to Fix this for 2430 101 */ 102 #ifndef CONFIG_ARCH_OMAP2430 103 omap2_init_memory(); 104 #endif 105 gpmc_init(); 106 } 107