Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap1/io.c |
| 3 | * |
| 4 | * OMAP1 I/O mapping code |
| 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/config.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
| 15 | |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 16 | #include <asm/tlb.h> |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 17 | #include <asm/mach/map.h> |
| 18 | #include <asm/io.h> |
Tony Lindgren | 3179a01 | 2005-11-10 14:26:48 +0000 | [diff] [blame] | 19 | #include <asm/arch/mux.h> |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 20 | #include <asm/arch/tc.h> |
Tony Lindgren | 120db2c | 2006-04-02 17:46:27 +0100 | [diff] [blame] | 21 | #include <asm/arch/omapfb.h> |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 22 | |
Tony Lindgren | 3179a01 | 2005-11-10 14:26:48 +0000 | [diff] [blame] | 23 | extern int omap1_clk_init(void); |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 24 | extern void omap_check_revision(void); |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 25 | extern void omap_sram_init(void); |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 26 | |
| 27 | /* |
| 28 | * The machine specific code may provide the extra mapping besides the |
| 29 | * default mapping provided here. |
| 30 | */ |
| 31 | static struct map_desc omap_io_desc[] __initdata = { |
Deepak Saxena | 9fe133b | 2005-10-28 15:19:00 +0100 | [diff] [blame] | 32 | { |
| 33 | .virtual = IO_VIRT, |
| 34 | .pfn = __phys_to_pfn(IO_PHYS), |
| 35 | .length = IO_SIZE, |
| 36 | .type = MT_DEVICE |
| 37 | } |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 38 | }; |
| 39 | |
| 40 | #ifdef CONFIG_ARCH_OMAP730 |
| 41 | static struct map_desc omap730_io_desc[] __initdata = { |
Deepak Saxena | 9fe133b | 2005-10-28 15:19:00 +0100 | [diff] [blame] | 42 | { |
| 43 | .virtual = OMAP730_DSP_BASE, |
| 44 | .pfn = __phys_to_pfn(OMAP730_DSP_START), |
| 45 | .length = OMAP730_DSP_SIZE, |
| 46 | .type = MT_DEVICE |
| 47 | }, { |
| 48 | .virtual = OMAP730_DSPREG_BASE, |
| 49 | .pfn = __phys_to_pfn(OMAP730_DSPREG_START), |
| 50 | .length = OMAP730_DSPREG_SIZE, |
| 51 | .type = MT_DEVICE |
| 52 | } |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 53 | }; |
| 54 | #endif |
| 55 | |
Tony Lindgren | 3179a01 | 2005-11-10 14:26:48 +0000 | [diff] [blame] | 56 | #ifdef CONFIG_ARCH_OMAP15XX |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 57 | static struct map_desc omap1510_io_desc[] __initdata = { |
Deepak Saxena | 9fe133b | 2005-10-28 15:19:00 +0100 | [diff] [blame] | 58 | { |
| 59 | .virtual = OMAP1510_DSP_BASE, |
| 60 | .pfn = __phys_to_pfn(OMAP1510_DSP_START), |
| 61 | .length = OMAP1510_DSP_SIZE, |
| 62 | .type = MT_DEVICE |
| 63 | }, { |
| 64 | .virtual = OMAP1510_DSPREG_BASE, |
| 65 | .pfn = __phys_to_pfn(OMAP1510_DSPREG_START), |
| 66 | .length = OMAP1510_DSPREG_SIZE, |
| 67 | .type = MT_DEVICE |
| 68 | } |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 69 | }; |
| 70 | #endif |
| 71 | |
| 72 | #if defined(CONFIG_ARCH_OMAP16XX) |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 73 | static struct map_desc omap16xx_io_desc[] __initdata = { |
Deepak Saxena | 9fe133b | 2005-10-28 15:19:00 +0100 | [diff] [blame] | 74 | { |
| 75 | .virtual = OMAP16XX_DSP_BASE, |
| 76 | .pfn = __phys_to_pfn(OMAP16XX_DSP_START), |
| 77 | .length = OMAP16XX_DSP_SIZE, |
| 78 | .type = MT_DEVICE |
| 79 | }, { |
| 80 | .virtual = OMAP16XX_DSPREG_BASE, |
| 81 | .pfn = __phys_to_pfn(OMAP16XX_DSPREG_START), |
| 82 | .length = OMAP16XX_DSPREG_SIZE, |
| 83 | .type = MT_DEVICE |
| 84 | } |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 85 | }; |
| 86 | #endif |
| 87 | |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 88 | /* |
| 89 | * Maps common IO regions for omap1. This should only get called from |
| 90 | * board specific init. |
| 91 | */ |
| 92 | void __init omap1_map_common_io(void) |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 93 | { |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 94 | iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc)); |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 95 | |
| 96 | /* Normally devicemaps_init() would flush caches and tlb after |
| 97 | * mdesc->map_io(), but we must also do it here because of the CPU |
| 98 | * revision check below. |
| 99 | */ |
| 100 | local_flush_tlb_all(); |
| 101 | flush_cache_all(); |
| 102 | |
| 103 | /* We want to check CPU revision early for cpu_is_omapxxxx() macros. |
| 104 | * IO space mapping must be initialized before we can do that. |
| 105 | */ |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 106 | omap_check_revision(); |
| 107 | |
| 108 | #ifdef CONFIG_ARCH_OMAP730 |
| 109 | if (cpu_is_omap730()) { |
| 110 | iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc)); |
| 111 | } |
| 112 | #endif |
Tony Lindgren | 3179a01 | 2005-11-10 14:26:48 +0000 | [diff] [blame] | 113 | #ifdef CONFIG_ARCH_OMAP15XX |
Tony Lindgren | 120db2c | 2006-04-02 17:46:27 +0100 | [diff] [blame] | 114 | if (cpu_is_omap15xx()) { |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 115 | iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc)); |
| 116 | } |
| 117 | #endif |
| 118 | #if defined(CONFIG_ARCH_OMAP16XX) |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 119 | if (cpu_is_omap16xx()) { |
| 120 | iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc)); |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 121 | } |
| 122 | #endif |
| 123 | |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 124 | omap_sram_init(); |
Tony Lindgren | 120db2c | 2006-04-02 17:46:27 +0100 | [diff] [blame] | 125 | omapfb_reserve_mem(); |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 126 | } |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 127 | |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 128 | /* |
| 129 | * Common low-level hardware init for omap1. This should only get called from |
| 130 | * board specific init. |
| 131 | */ |
| 132 | void __init omap1_init_common_hw() |
| 133 | { |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 134 | /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort |
| 135 | * on a Posted Write in the TIPB Bridge". |
| 136 | */ |
| 137 | omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL); |
| 138 | omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL); |
| 139 | |
| 140 | /* Must init clocks early to assure that timer interrupt works |
| 141 | */ |
Tony Lindgren | 3179a01 | 2005-11-10 14:26:48 +0000 | [diff] [blame] | 142 | omap1_clk_init(); |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 143 | |
Tony Lindgren | 53d9cc7 | 2006-02-08 22:06:45 +0000 | [diff] [blame] | 144 | omap1_mux_init(); |
Tony Lindgren | f577ffd | 2005-07-10 19:58:12 +0100 | [diff] [blame] | 145 | } |
Tony Lindgren | 7c38cf0 | 2005-09-08 23:07:38 +0100 | [diff] [blame] | 146 | |