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Tony Lindgrenf577ffd2005-07-10 19:58:12 +01001/*
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
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010011#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/init.h>
Russell Kingfced80c2008-09-06 12:10:45 +010014#include <linux/io.h>
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010015
Tony Lindgren53d9cc72006-02-08 22:06:45 +000016#include <asm/tlb.h>
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010017#include <asm/mach/map.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010018#include <mach/mux.h>
19#include <mach/tc.h>
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010020
Tony Lindgren3179a012005-11-10 14:26:48 +000021extern int omap1_clk_init(void);
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010022extern void omap_check_revision(void);
Tony Lindgren7c38cf02005-09-08 23:07:38 +010023extern void omap_sram_init(void);
Imre Deakb7cc6d42007-03-06 03:16:36 -080024extern void omapfb_reserve_sdram(void);
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010025
26/*
27 * The machine specific code may provide the extra mapping besides the
28 * default mapping provided here.
29 */
30static struct map_desc omap_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010031 {
Tony Lindgrendb326be2009-08-28 10:50:37 -070032 .virtual = OMAP1_IO_VIRT,
33 .pfn = __phys_to_pfn(OMAP1_IO_PHYS),
34 .length = OMAP1_IO_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010035 .type = MT_DEVICE
36 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010037};
38
Alistair Buxtonab49df72009-09-22 05:58:08 +010039#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
Alistair Buxton7c006922009-09-22 10:02:58 +010040static struct map_desc omap7xx_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010041 {
Alistair Buxtonb51988d2009-09-22 07:34:13 +010042 .virtual = OMAP7XX_DSP_BASE,
43 .pfn = __phys_to_pfn(OMAP7XX_DSP_START),
44 .length = OMAP7XX_DSP_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010045 .type = MT_DEVICE
46 }, {
Alistair Buxtonb51988d2009-09-22 07:34:13 +010047 .virtual = OMAP7XX_DSPREG_BASE,
48 .pfn = __phys_to_pfn(OMAP7XX_DSPREG_START),
49 .length = OMAP7XX_DSPREG_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010050 .type = MT_DEVICE
51 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010052};
53#endif
54
Tony Lindgren3179a012005-11-10 14:26:48 +000055#ifdef CONFIG_ARCH_OMAP15XX
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010056static struct map_desc omap1510_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010057 {
58 .virtual = OMAP1510_DSP_BASE,
59 .pfn = __phys_to_pfn(OMAP1510_DSP_START),
60 .length = OMAP1510_DSP_SIZE,
61 .type = MT_DEVICE
62 }, {
63 .virtual = OMAP1510_DSPREG_BASE,
64 .pfn = __phys_to_pfn(OMAP1510_DSPREG_START),
65 .length = OMAP1510_DSPREG_SIZE,
66 .type = MT_DEVICE
67 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010068};
69#endif
70
71#if defined(CONFIG_ARCH_OMAP16XX)
Tony Lindgren7c38cf02005-09-08 23:07:38 +010072static struct map_desc omap16xx_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010073 {
74 .virtual = OMAP16XX_DSP_BASE,
75 .pfn = __phys_to_pfn(OMAP16XX_DSP_START),
76 .length = OMAP16XX_DSP_SIZE,
77 .type = MT_DEVICE
78 }, {
79 .virtual = OMAP16XX_DSPREG_BASE,
80 .pfn = __phys_to_pfn(OMAP16XX_DSPREG_START),
81 .length = OMAP16XX_DSPREG_SIZE,
82 .type = MT_DEVICE
83 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010084};
85#endif
86
Tony Lindgren53d9cc72006-02-08 22:06:45 +000087/*
88 * Maps common IO regions for omap1. This should only get called from
89 * board specific init.
90 */
91void __init omap1_map_common_io(void)
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010092{
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010093 iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
Tony Lindgren53d9cc72006-02-08 22:06:45 +000094
95 /* Normally devicemaps_init() would flush caches and tlb after
96 * mdesc->map_io(), but we must also do it here because of the CPU
97 * revision check below.
98 */
99 local_flush_tlb_all();
100 flush_cache_all();
101
102 /* We want to check CPU revision early for cpu_is_omapxxxx() macros.
103 * IO space mapping must be initialized before we can do that.
104 */
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100105 omap_check_revision();
106
Alistair Buxtonab49df72009-09-22 05:58:08 +0100107#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
108 if (cpu_is_omap7xx()) {
Alistair Buxton7c006922009-09-22 10:02:58 +0100109 iotable_init(omap7xx_io_desc, ARRAY_SIZE(omap7xx_io_desc));
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100110 }
111#endif
Tony Lindgren3179a012005-11-10 14:26:48 +0000112#ifdef CONFIG_ARCH_OMAP15XX
Tony Lindgren120db2c2006-04-02 17:46:27 +0100113 if (cpu_is_omap15xx()) {
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100114 iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
115 }
116#endif
117#if defined(CONFIG_ARCH_OMAP16XX)
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100118 if (cpu_is_omap16xx()) {
119 iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc));
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100120 }
121#endif
122
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100123 omap_sram_init();
Imre Deakb7cc6d42007-03-06 03:16:36 -0800124 omapfb_reserve_sdram();
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000125}
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100126
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000127/*
128 * Common low-level hardware init for omap1. This should only get called from
129 * board specific init.
130 */
Russell King020f9702008-12-01 17:40:54 +0000131void __init omap1_init_common_hw(void)
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000132{
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100133 /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
134 * on a Posted Write in the TIPB Bridge".
135 */
136 omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL);
137 omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL);
138
139 /* Must init clocks early to assure that timer interrupt works
140 */
Tony Lindgren3179a012005-11-10 14:26:48 +0000141 omap1_clk_init();
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100142
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000143 omap1_mux_init();
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100144}
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100145