sh: Add support for AP-SH4A-3A board.
[~shefty/rdma-dev.git] / arch / sh / boards / board-apsh4a3a.c
1 /*
2  * ALPHAPROJECT AP-SH4A-3A Support.
3  *
4  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
5  * Copyright (C) 2008  Yoshihiro Shimoda
6  * Copyright (C) 2009  Paul Mundt
7  *
8  * This file is subject to the terms and conditions of the GNU General Public
9  * License.  See the file "COPYING" in the main directory of this archive
10  * for more details.
11  */
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/io.h>
15 #include <linux/mtd/physmap.h>
16 #include <linux/smsc911x.h>
17 #include <linux/irq.h>
18 #include <linux/clk.h>
19 #include <asm/machvec.h>
20 #include <asm/sizes.h>
21 #include <asm/clock.h>
22
23 static struct mtd_partition nor_flash_partitions[] = {
24         {
25                 .name           = "loader",
26                 .offset         = 0x00000000,
27                 .size           = 512 * 1024,
28         },
29         {
30                 .name           = "bootenv",
31                 .offset         = MTDPART_OFS_APPEND,
32                 .size           = 512 * 1024,
33         },
34         {
35                 .name           = "kernel",
36                 .offset         = MTDPART_OFS_APPEND,
37                 .size           = 4 * 1024 * 1024,
38         },
39         {
40                 .name           = "data",
41                 .offset         = MTDPART_OFS_APPEND,
42                 .size           = MTDPART_SIZ_FULL,
43         },
44 };
45
46 static struct physmap_flash_data nor_flash_data = {
47         .width          = 4,
48         .parts          = nor_flash_partitions,
49         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
50 };
51
52 static struct resource nor_flash_resources[] = {
53         [0]     = {
54                 .start  = 0x00000000,
55                 .end    = 0x01000000 - 1,
56                 .flags  = IORESOURCE_MEM,
57         }
58 };
59
60 static struct platform_device nor_flash_device = {
61         .name           = "physmap-flash",
62         .dev            = {
63                 .platform_data  = &nor_flash_data,
64         },
65         .num_resources  = ARRAY_SIZE(nor_flash_resources),
66         .resource       = nor_flash_resources,
67 };
68
69 static struct resource smsc911x_resources[] = {
70         [0] = {
71                 .name           = "smsc911x-memory",
72                 .start          = 0xA4000000,
73                 .end            = 0xA4000000 + SZ_256 - 1,
74                 .flags          = IORESOURCE_MEM,
75         },
76         [1] = {
77                 .name           = "smsc911x-irq",
78                 .start          = evt2irq(0x200),
79                 .end            = evt2irq(0x200),
80                 .flags          = IORESOURCE_IRQ,
81         },
82 };
83
84 static struct smsc911x_platform_config smsc911x_config = {
85         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
86         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
87         .flags          = SMSC911X_USE_16BIT,
88         .phy_interface  = PHY_INTERFACE_MODE_MII,
89 };
90
91 static struct platform_device smsc911x_device = {
92         .name           = "smsc911x",
93         .id             = -1,
94         .num_resources  = ARRAY_SIZE(smsc911x_resources),
95         .resource       = smsc911x_resources,
96         .dev = {
97                 .platform_data = &smsc911x_config,
98         },
99 };
100
101 static struct platform_device *apsh4a3a_devices[] __initdata = {
102         &nor_flash_device,
103         &smsc911x_device,
104 };
105
106 static int __init apsh4a3a_devices_setup(void)
107 {
108         return platform_add_devices(apsh4a3a_devices,
109                                     ARRAY_SIZE(apsh4a3a_devices));
110 }
111 device_initcall(apsh4a3a_devices_setup);
112
113 static int apsh4a3a_clk_init(void)
114 {
115         struct clk *clk;
116         int ret;
117
118         clk = clk_get(NULL, "extal");
119         if (!clk || IS_ERR(clk))
120                 return PTR_ERR(clk);
121         ret = clk_set_rate(clk, 33333000);
122         clk_put(clk);
123
124         return ret;
125 }
126
127 /* Initialize the board */
128 static void __init apsh4a3a_setup(char **cmdline_p)
129 {
130         printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n");
131 }
132
133 static void __init apsh4a3a_init_irq(void)
134 {
135         plat_irq_setup_pins(IRQ_MODE_IRQ7654);
136 }
137
138 /* Return the board specific boot mode pin configuration */
139 static int apsh4a3a_mode_pins(void)
140 {
141         int value = 0;
142
143         /* These are the factory default settings of SW1 and SW2.
144          * If you change these dip switches then you will need to
145          * adjust the values below as well.
146          */
147         value &= ~MODE_PIN0;  /* Clock Mode 16 */
148         value &= ~MODE_PIN1;
149         value &= ~MODE_PIN2;
150         value &= ~MODE_PIN3;
151         value |=  MODE_PIN4;
152         value &= ~MODE_PIN5;  /* 16-bit Area0 bus width */
153         value |=  MODE_PIN6;  /* Area 0 SRAM interface */
154         value |=  MODE_PIN7;
155         value |=  MODE_PIN8;  /* Little Endian */
156         value |=  MODE_PIN9;  /* Master Mode */
157         value |=  MODE_PIN10; /* Crystal resonator */
158         value |=  MODE_PIN11; /* Display Unit */
159         value |=  MODE_PIN12;
160         value &= ~MODE_PIN13; /* 29-bit address mode */
161         value |=  MODE_PIN14; /* No PLL step-up */
162
163         return value;
164 }
165
166 /*
167  * The Machine Vector
168  */
169 static struct sh_machine_vector mv_apsh4a3a __initmv = {
170         .mv_name                = "AP-SH4A-3A",
171         .mv_setup               = apsh4a3a_setup,
172         .mv_clk_init            = apsh4a3a_clk_init,
173         .mv_init_irq            = apsh4a3a_init_irq,
174         .mv_mode_pins           = apsh4a3a_mode_pins,
175 };