1 /*
2 * Copyright (C) 2000 Deep Blue Solutions Ltd
3 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
4 * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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 as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/types.h>
22 #include <linux/init.h>
23 #include <linux/clk.h>
24 #include <linux/serial_8250.h>
25
26 #include <asm/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/memory.h>
30 #include <asm/mach/map.h>
31 #include <asm/arch/common.h>
32
33 /*!
34 * @file mx31ads.c
35 *
36 * @brief This file contains the board-specific initialization routines.
37 *
38 * @ingroup System
39 */
40
41 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
42 /*!
43 * The serial port definition structure.
44 */
45 static struct plat_serial8250_port serial_platform_data[] = {
46 {
47 .membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
48 .mapbase = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTA),
49 .irq = EXPIO_INT_XUART_INTA,
50 .uartclk = 14745600,
51 .regshift = 0,
52 .iotype = UPIO_MEM,
53 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
54 }, {
55 .membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
56 .mapbase = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTB),
57 .irq = EXPIO_INT_XUART_INTB,
58 .uartclk = 14745600,
59 .regshift = 0,
60 .iotype = UPIO_MEM,
61 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
62 },
63 {},
64 };
65
66 static struct platform_device serial_device = {
67 .name = "serial8250",
68 .id = 0,
69 .dev = {
70 .platform_data = serial_platform_data,
71 },
72 };
73
74 static int __init mxc_init_extuart(void)
75 {
76 return platform_device_register(&serial_device);
77 }
78 #else
79 static inline int mxc_init_extuart(void)
80 {
81 return 0;
82 }
83 #endif
84
85 /*!
86 * This structure defines static mappings for the i.MX31ADS board.
87 */
88 static struct map_desc mx31ads_io_desc[] __initdata = {
89 {
90 .virtual = AIPS1_BASE_ADDR_VIRT,
91 .pfn = __phys_to_pfn(AIPS1_BASE_ADDR),
92 .length = AIPS1_SIZE,
93 .type = MT_NONSHARED_DEVICE
94 }, {
95 .virtual = SPBA0_BASE_ADDR_VIRT,
96 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
97 .length = SPBA0_SIZE,
98 .type = MT_NONSHARED_DEVICE
99 }, {
100 .virtual = AIPS2_BASE_ADDR_VIRT,
101 .pfn = __phys_to_pfn(AIPS2_BASE_ADDR),
102 .length = AIPS2_SIZE,
103 .type = MT_NONSHARED_DEVICE
104 }, {
105 .virtual = CS4_BASE_ADDR_VIRT,
106 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
107 .length = CS4_SIZE / 2,
108 .type = MT_DEVICE
109 },
110 };
111
112 /*!
113 * Set up static virtual mappings.
114 */
115 void __init mx31ads_map_io(void)
116 {
117 mxc_map_io();
118 iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
119 }
120
121 /*!
122 * Board specific initialization.
123 */
124 static void __init mxc_board_init(void)
125 {
126 mxc_init_extuart();
127 }
128
129 /*
130 * The following uses standard kernel macros defined in arch.h in order to
131 * initialize __mach_desc_MX31ADS data structure.
132 */
133 MACHINE_START(MX31ADS, "Freescale MX31ADS")
134 /* Maintainer: Freescale Semiconductor, Inc. */
135 .phys_io = AIPS1_BASE_ADDR,
136 .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
137 .boot_params = PHYS_OFFSET + 0x100,
138 .map_io = mx31ads_map_io,
139 .init_irq = mxc_init_irq,
140 .init_machine = mxc_board_init,
141 .timer = &mxc_timer,
142 MACHINE_END
143
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