Commit | Line | Data |
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eba2645a SS |
1 | /* |
2 | * board-overo.c (Gumstix Overo) | |
3 | * | |
4 | * Initial code: Steve Sakoman <steve@sakoman.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * version 2 as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
18 | * 02110-1301 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/clk.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/err.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/io.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/platform_device.h> | |
29 | ||
30 | #include <linux/mtd/mtd.h> | |
31 | #include <linux/mtd/nand.h> | |
32 | #include <linux/mtd/partitions.h> | |
33 | ||
34 | #include <asm/mach-types.h> | |
35 | #include <asm/mach/arch.h> | |
36 | #include <asm/mach/flash.h> | |
37 | #include <asm/mach/map.h> | |
38 | ||
39 | #include <mach/board-overo.h> | |
40 | #include <mach/board.h> | |
41 | #include <mach/common.h> | |
42 | #include <mach/gpio.h> | |
43 | #include <mach/gpmc.h> | |
44 | #include <mach/hardware.h> | |
45 | #include <mach/nand.h> | |
46 | ||
47 | #define NAND_BLOCK_SIZE SZ_128K | |
48 | #define GPMC_CS0_BASE 0x60 | |
49 | #define GPMC_CS_SIZE 0x30 | |
50 | ||
51 | static struct mtd_partition overo_nand_partitions[] = { | |
52 | { | |
53 | .name = "xloader", | |
54 | .offset = 0, /* Offset = 0x00000 */ | |
55 | .size = 4 * NAND_BLOCK_SIZE, | |
56 | .mask_flags = MTD_WRITEABLE | |
57 | }, | |
58 | { | |
59 | .name = "uboot", | |
60 | .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */ | |
61 | .size = 14 * NAND_BLOCK_SIZE, | |
62 | }, | |
63 | { | |
64 | .name = "uboot environment", | |
65 | .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */ | |
66 | .size = 2 * NAND_BLOCK_SIZE, | |
67 | }, | |
68 | { | |
69 | .name = "linux", | |
70 | .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */ | |
71 | .size = 32 * NAND_BLOCK_SIZE, | |
72 | }, | |
73 | { | |
74 | .name = "rootfs", | |
75 | .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */ | |
76 | .size = MTDPART_SIZ_FULL, | |
77 | }, | |
78 | }; | |
79 | ||
80 | static struct omap_nand_platform_data overo_nand_data = { | |
81 | .parts = overo_nand_partitions, | |
82 | .nr_parts = ARRAY_SIZE(overo_nand_partitions), | |
83 | .dma_channel = -1, /* disable DMA in OMAP NAND driver */ | |
84 | }; | |
85 | ||
86 | static struct resource overo_nand_resource = { | |
87 | .flags = IORESOURCE_MEM, | |
88 | }; | |
89 | ||
90 | static struct platform_device overo_nand_device = { | |
91 | .name = "omap2-nand", | |
92 | .id = -1, | |
93 | .dev = { | |
94 | .platform_data = &overo_nand_data, | |
95 | }, | |
96 | .num_resources = 1, | |
97 | .resource = &overo_nand_resource, | |
98 | }; | |
99 | ||
100 | ||
101 | static void __init overo_flash_init(void) | |
102 | { | |
103 | u8 cs = 0; | |
104 | u8 nandcs = GPMC_CS_NUM + 1; | |
105 | ||
106 | u32 gpmc_base_add = OMAP34XX_GPMC_VIRT; | |
107 | ||
108 | /* find out the chip-select on which NAND exists */ | |
109 | while (cs < GPMC_CS_NUM) { | |
110 | u32 ret = 0; | |
111 | ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); | |
112 | ||
113 | if ((ret & 0xC00) == 0x800) { | |
114 | printk(KERN_INFO "Found NAND on CS%d\n", cs); | |
115 | if (nandcs > GPMC_CS_NUM) | |
116 | nandcs = cs; | |
117 | } | |
118 | cs++; | |
119 | } | |
120 | ||
121 | if (nandcs > GPMC_CS_NUM) { | |
122 | printk(KERN_INFO "NAND: Unable to find configuration " | |
123 | "in GPMC\n "); | |
124 | return; | |
125 | } | |
126 | ||
127 | if (nandcs < GPMC_CS_NUM) { | |
128 | overo_nand_data.cs = nandcs; | |
129 | overo_nand_data.gpmc_cs_baseaddr = (void *) | |
130 | (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE); | |
131 | overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add); | |
132 | ||
133 | printk(KERN_INFO "Registering NAND on CS%d\n", nandcs); | |
134 | if (platform_device_register(&overo_nand_device) < 0) | |
135 | printk(KERN_ERR "Unable to register NAND device\n"); | |
136 | } | |
137 | } | |
138 | static struct omap_uart_config overo_uart_config __initdata = { | |
139 | .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)), | |
140 | }; | |
141 | ||
142 | static int __init overo_i2c_init(void) | |
143 | { | |
144 | /* i2c2 pins are used for gpio */ | |
145 | omap_register_i2c_bus(3, 400, NULL, 0); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static void __init overo_init_irq(void) | |
150 | { | |
151 | omap2_init_common_hw(); | |
152 | omap_init_irq(); | |
153 | omap_gpio_init(); | |
154 | } | |
155 | ||
156 | static struct platform_device overo_lcd_device = { | |
157 | .name = "overo_lcd", | |
158 | .id = -1, | |
159 | }; | |
160 | ||
161 | static struct omap_lcd_config overo_lcd_config __initdata = { | |
162 | .ctrl_name = "internal", | |
163 | }; | |
164 | ||
165 | static struct omap_board_config_kernel overo_config[] __initdata = { | |
166 | { OMAP_TAG_UART, &overo_uart_config }, | |
167 | { OMAP_TAG_LCD, &overo_lcd_config }, | |
168 | }; | |
169 | ||
170 | static struct platform_device *overo_devices[] __initdata = { | |
171 | &overo_lcd_device, | |
172 | }; | |
173 | ||
174 | static void __init overo_init(void) | |
175 | { | |
176 | overo_i2c_init(); | |
177 | platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices)); | |
178 | omap_board_config = overo_config; | |
179 | omap_board_config_size = ARRAY_SIZE(overo_config); | |
180 | omap_serial_init(); | |
181 | overo_flash_init(); | |
182 | ||
183 | if ((gpio_request(OVERO_GPIO_W2W_NRESET, | |
184 | "OVERO_GPIO_W2W_NRESET") == 0) && | |
185 | (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) { | |
186 | gpio_export(OVERO_GPIO_W2W_NRESET, 0); | |
187 | gpio_set_value(OVERO_GPIO_W2W_NRESET, 0); | |
188 | udelay(10); | |
189 | gpio_set_value(OVERO_GPIO_W2W_NRESET, 1); | |
190 | } else { | |
191 | printk(KERN_ERR "could not obtain gpio for " | |
192 | "OVERO_GPIO_W2W_NRESET\n"); | |
193 | } | |
194 | ||
195 | if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) && | |
196 | (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0)) | |
197 | gpio_export(OVERO_GPIO_BT_XGATE, 0); | |
198 | else | |
199 | printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n"); | |
200 | ||
201 | if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) && | |
202 | (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) { | |
203 | gpio_export(OVERO_GPIO_BT_NRESET, 0); | |
204 | gpio_set_value(OVERO_GPIO_BT_NRESET, 0); | |
205 | mdelay(6); | |
206 | gpio_set_value(OVERO_GPIO_BT_NRESET, 1); | |
207 | } else { | |
208 | printk(KERN_ERR "could not obtain gpio for " | |
209 | "OVERO_GPIO_BT_NRESET\n"); | |
210 | } | |
211 | ||
212 | if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) && | |
213 | (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0)) | |
214 | gpio_export(OVERO_GPIO_USBH_CPEN, 0); | |
215 | else | |
216 | printk(KERN_ERR "could not obtain gpio for " | |
217 | "OVERO_GPIO_USBH_CPEN\n"); | |
218 | ||
219 | if ((gpio_request(OVERO_GPIO_USBH_NRESET, | |
220 | "OVERO_GPIO_USBH_NRESET") == 0) && | |
221 | (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0)) | |
222 | gpio_export(OVERO_GPIO_USBH_NRESET, 0); | |
223 | else | |
224 | printk(KERN_ERR "could not obtain gpio for " | |
225 | "OVERO_GPIO_USBH_NRESET\n"); | |
226 | } | |
227 | ||
228 | static void __init overo_map_io(void) | |
229 | { | |
230 | omap2_set_globals_343x(); | |
231 | omap2_map_common_io(); | |
232 | } | |
233 | ||
234 | MACHINE_START(OVERO, "Gumstix Overo") | |
235 | .phys_io = 0x48000000, | |
236 | .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc, | |
237 | .boot_params = 0x80000100, | |
238 | .map_io = overo_map_io, | |
239 | .init_irq = overo_init_irq, | |
240 | .init_machine = overo_init, | |
241 | .timer = &omap_timer, | |
242 | MACHINE_END |