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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>
Tony Lindgrence491cf2009-10-20 09:40:47 -070018#include <plat/mux.h>
19#include <plat/tc.h>
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010020
Paul Walmsley52650502009-12-08 16:29:38 -070021#include "clock.h"
22
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010023extern void omap_check_revision(void);
Tony Lindgren7c38cf02005-09-08 23:07:38 +010024extern void omap_sram_init(void);
Imre Deakb7cc6d42007-03-06 03:16:36 -080025extern void omapfb_reserve_sdram(void);
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010026
27/*
28 * The machine specific code may provide the extra mapping besides the
29 * default mapping provided here.
30 */
31static struct map_desc omap_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010032 {
Tony Lindgrendb326be2009-08-28 10:50:37 -070033 .virtual = OMAP1_IO_VIRT,
34 .pfn = __phys_to_pfn(OMAP1_IO_PHYS),
35 .length = OMAP1_IO_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010036 .type = MT_DEVICE
37 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010038};
39
Alistair Buxtonab49df72009-09-22 05:58:08 +010040#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
Alistair Buxton7c006922009-09-22 10:02:58 +010041static struct map_desc omap7xx_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010042 {
Alistair Buxtonb51988d2009-09-22 07:34:13 +010043 .virtual = OMAP7XX_DSP_BASE,
44 .pfn = __phys_to_pfn(OMAP7XX_DSP_START),
45 .length = OMAP7XX_DSP_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010046 .type = MT_DEVICE
47 }, {
Alistair Buxtonb51988d2009-09-22 07:34:13 +010048 .virtual = OMAP7XX_DSPREG_BASE,
49 .pfn = __phys_to_pfn(OMAP7XX_DSPREG_START),
50 .length = OMAP7XX_DSPREG_SIZE,
Deepak Saxena9fe133b2005-10-28 15:19:00 +010051 .type = MT_DEVICE
52 }
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010053};
54#endif
55
Tony Lindgren3179a012005-11-10 14:26:48 +000056#ifdef CONFIG_ARCH_OMAP15XX
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010057static struct map_desc omap1510_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010058 {
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 Lindgrenf577ffd2005-07-10 19:58:12 +010069};
70#endif
71
72#if defined(CONFIG_ARCH_OMAP16XX)
Tony Lindgren7c38cf02005-09-08 23:07:38 +010073static struct map_desc omap16xx_io_desc[] __initdata = {
Deepak Saxena9fe133b2005-10-28 15:19:00 +010074 {
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 Lindgrenf577ffd2005-07-10 19:58:12 +010085};
86#endif
87
Tony Lindgren53d9cc72006-02-08 22:06:45 +000088/*
89 * Maps common IO regions for omap1. This should only get called from
90 * board specific init.
91 */
92void __init omap1_map_common_io(void)
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010093{
Tony Lindgrenf577ffd2005-07-10 19:58:12 +010094 iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
Tony Lindgren53d9cc72006-02-08 22:06:45 +000095
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 Lindgrenf577ffd2005-07-10 19:58:12 +0100106 omap_check_revision();
107
Alistair Buxtonab49df72009-09-22 05:58:08 +0100108#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850)
109 if (cpu_is_omap7xx()) {
Alistair Buxton7c006922009-09-22 10:02:58 +0100110 iotable_init(omap7xx_io_desc, ARRAY_SIZE(omap7xx_io_desc));
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100111 }
112#endif
Tony Lindgren3179a012005-11-10 14:26:48 +0000113#ifdef CONFIG_ARCH_OMAP15XX
Tony Lindgren120db2c2006-04-02 17:46:27 +0100114 if (cpu_is_omap15xx()) {
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100115 iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
116 }
117#endif
118#if defined(CONFIG_ARCH_OMAP16XX)
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100119 if (cpu_is_omap16xx()) {
120 iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc));
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100121 }
122#endif
123
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100124 omap_sram_init();
Imre Deakb7cc6d42007-03-06 03:16:36 -0800125 omapfb_reserve_sdram();
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000126}
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100127
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000128/*
129 * Common low-level hardware init for omap1. This should only get called from
130 * board specific init.
131 */
Russell King020f9702008-12-01 17:40:54 +0000132void __init omap1_init_common_hw(void)
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000133{
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100134 /* 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 Lindgren3179a012005-11-10 14:26:48 +0000142 omap1_clk_init();
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100143
Tony Lindgren53d9cc72006-02-08 22:06:45 +0000144 omap1_mux_init();
Tony Lindgrenf577ffd2005-07-10 19:58:12 +0100145}
Tony Lindgren7c38cf02005-09-08 23:07:38 +0100146