1 /*
2 * linux/arch/arm/mach-nomadik/board-8815nhk.c
3 *
4 * Copyright (C) STMicroelectronics
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 * NHK15 board specifc driver definition
11 */
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/amba/bus.h>
17 #include <linux/interrupt.h>
18 #include <linux/gpio.h>
19 #include <linux/mtd/mtd.h>
20 #include <linux/mtd/nand.h>
21 #include <linux/mtd/onenand.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/io.h>
24 #include <asm/sizes.h>
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/irq.h>
28 #include <asm/mach/flash.h>
29
30 #include <plat/mtu.h>
31
32 #include <mach/setup.h>
33 #include <mach/nand.h>
34 #include <mach/fsmc.h>
35
36 /* Initial value for SRC control register: all timers use MXTAL/8 source */
37 #define SRC_CR_INIT_MASK 0x00007fff
38 #define SRC_CR_INIT_VAL 0x2aaa8000
39
40 /* These addresses span 16MB, so use three individual pages */
41 static struct resource nhk8815_nand_resources[] = {
42 {
43 .name = "nand_addr",
44 .start = NAND_IO_ADDR,
45 .end = NAND_IO_ADDR + 0xfff,
46 .flags = IORESOURCE_MEM,
47 }, {
48 .name = "nand_cmd",
49 .start = NAND_IO_CMD,
50 .end = NAND_IO_CMD + 0xfff,
51 .flags = IORESOURCE_MEM,
52 }, {
53 .name = "nand_data",
54 .start = NAND_IO_DATA,
55 .end = NAND_IO_DATA + 0xfff,
56 .flags = IORESOURCE_MEM,
57 }
58 };
59
nhk8815_nand_init(void)60 static int nhk8815_nand_init(void)
61 {
62 /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
63 writel(0x0000000E, FSMC_PCR(0));
64 writel(0x000D0A00, FSMC_PMEM(0));
65 writel(0x00100A00, FSMC_PATT(0));
66
67 /* enable access to the chip select area */
68 writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
69
70 return 0;
71 }
72
73 /*
74 * These partitions are the same as those used in the 2.6.20 release
75 * shipped by the vendor; the first two partitions are mandated
76 * by the boot ROM, and the bootloader area is somehow oversized...
77 */
78 static struct mtd_partition nhk8815_partitions[] = {
79 {
80 .name = "X-Loader(NAND)",
81 .offset = 0,
82 .size = SZ_256K,
83 }, {
84 .name = "MemInit(NAND)",
85 .offset = MTDPART_OFS_APPEND,
86 .size = SZ_256K,
87 }, {
88 .name = "BootLoader(NAND)",
89 .offset = MTDPART_OFS_APPEND,
90 .size = SZ_2M,
91 }, {
92 .name = "Kernel zImage(NAND)",
93 .offset = MTDPART_OFS_APPEND,
94 .size = 3 * SZ_1M,
95 }, {
96 .name = "Root Filesystem(NAND)",
97 .offset = MTDPART_OFS_APPEND,
98 .size = 22 * SZ_1M,
99 }, {
100 .name = "User Filesystem(NAND)",
101 .offset = MTDPART_OFS_APPEND,
102 .size = MTDPART_SIZ_FULL,
103 }
104 };
105
106 static struct nomadik_nand_platform_data nhk8815_nand_data = {
107 .parts = nhk8815_partitions,
108 .nparts = ARRAY_SIZE(nhk8815_partitions),
109 .options = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
110 | NAND_NO_READRDY | NAND_NO_AUTOINCR,
111 .init = nhk8815_nand_init,
112 };
113
114 static struct platform_device nhk8815_nand_device = {
115 .name = "nomadik_nand",
116 .dev = {
117 .platform_data = &nhk8815_nand_data,
118 },
119 .resource = nhk8815_nand_resources,
120 .num_resources = ARRAY_SIZE(nhk8815_nand_resources),
121 };
122
123 /* These are the partitions for the OneNand device, different from above */
124 static struct mtd_partition nhk8815_onenand_partitions[] = {
125 {
126 .name = "X-Loader(OneNAND)",
127 .offset = 0,
128 .size = SZ_256K,
129 }, {
130 .name = "MemInit(OneNAND)",
131 .offset = MTDPART_OFS_APPEND,
132 .size = SZ_256K,
133 }, {
134 .name = "BootLoader(OneNAND)",
135 .offset = MTDPART_OFS_APPEND,
136 .size = SZ_2M-SZ_256K,
137 }, {
138 .name = "SysImage(OneNAND)",
139 .offset = MTDPART_OFS_APPEND,
140 .size = 4 * SZ_1M,
141 }, {
142 .name = "Root Filesystem(OneNAND)",
143 .offset = MTDPART_OFS_APPEND,
144 .size = 22 * SZ_1M,
145 }, {
146 .name = "User Filesystem(OneNAND)",
147 .offset = MTDPART_OFS_APPEND,
148 .size = MTDPART_SIZ_FULL,
149 }
150 };
151
152 static struct onenand_platform_data nhk8815_onenand_data = {
153 .parts = nhk8815_onenand_partitions,
154 .nr_parts = ARRAY_SIZE(nhk8815_onenand_partitions),
155 };
156
157 static struct resource nhk8815_onenand_resource[] = {
158 {
159 .start = 0x30000000,
160 .end = 0x30000000 + SZ_128K - 1,
161 .flags = IORESOURCE_MEM,
162 },
163 };
164
165 static struct platform_device nhk8815_onenand_device = {
166 .name = "onenand-flash",
167 .id = -1,
168 .dev = {
169 .platform_data = &nhk8815_onenand_data,
170 },
171 .resource = nhk8815_onenand_resource,
172 .num_resources = ARRAY_SIZE(nhk8815_onenand_resource),
173 };
174
nhk8815_onenand_init(void)175 static void __init nhk8815_onenand_init(void)
176 {
177 #ifdef CONFIG_MTD_ONENAND
178 /* Set up SMCS0 for OneNand */
179 writel(0x000030db, FSMC_BCR(0));
180 writel(0x02100551, FSMC_BTR(0));
181 #endif
182 }
183
184 #define __MEM_4K_RESOURCE(x) \
185 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
186
187 static struct amba_device uart0_device = {
188 .dev = { .init_name = "uart0" },
189 __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
190 .irq = {IRQ_UART0, NO_IRQ},
191 };
192
193 static struct amba_device uart1_device = {
194 .dev = { .init_name = "uart1" },
195 __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
196 .irq = {IRQ_UART1, NO_IRQ},
197 };
198
199 static struct amba_device *amba_devs[] __initdata = {
200 &uart0_device,
201 &uart1_device,
202 };
203
204 static struct resource nhk8815_eth_resources[] = {
205 {
206 .name = "smc91x-regs",
207 .start = 0x34000000 + 0x300,
208 .end = 0x34000000 + SZ_64K - 1,
209 .flags = IORESOURCE_MEM,
210 }, {
211 .start = NOMADIK_GPIO_TO_IRQ(115),
212 .end = NOMADIK_GPIO_TO_IRQ(115),
213 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
214 }
215 };
216
217 static struct platform_device nhk8815_eth_device = {
218 .name = "smc91x",
219 .resource = nhk8815_eth_resources,
220 .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
221 };
222
nhk8815_eth_init(void)223 static int __init nhk8815_eth_init(void)
224 {
225 int gpio_nr = 115; /* hardwired in the board */
226 int err;
227
228 err = gpio_request(gpio_nr, "eth_irq");
229 if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
230 if (!err) err = gpio_direction_input(gpio_nr);
231 if (err)
232 pr_err("Error %i in %s\n", err, __func__);
233 return err;
234 }
235 device_initcall(nhk8815_eth_init);
236
237 static struct platform_device *nhk8815_platform_devices[] __initdata = {
238 &nhk8815_nand_device,
239 &nhk8815_onenand_device,
240 &nhk8815_eth_device,
241 /* will add more devices */
242 };
243
nomadik_timer_init(void)244 static void __init nomadik_timer_init(void)
245 {
246 u32 src_cr;
247
248 /* Configure timer sources in "system reset controller" ctrl reg */
249 src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
250 src_cr &= SRC_CR_INIT_MASK;
251 src_cr |= SRC_CR_INIT_VAL;
252 writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
253
254 /* Save global pointer to mtu, used by platform timer code */
255 mtu_base = io_p2v(NOMADIK_MTU0_BASE);
256
257 nmdk_timer_init();
258 }
259
260 static struct sys_timer nomadik_timer = {
261 .init = nomadik_timer_init,
262 };
263
nhk8815_platform_init(void)264 static void __init nhk8815_platform_init(void)
265 {
266 int i;
267
268 cpu8815_platform_init();
269 nhk8815_onenand_init();
270 platform_add_devices(nhk8815_platform_devices,
271 ARRAY_SIZE(nhk8815_platform_devices));
272
273 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
274 amba_device_register(amba_devs[i], &iomem_resource);
275 }
276
277 MACHINE_START(NOMADIK, "NHK8815")
278 /* Maintainer: ST MicroElectronics */
279 .boot_params = 0x100,
280 .map_io = cpu8815_map_io,
281 .init_irq = cpu8815_init_irq,
282 .timer = &nomadik_timer,
283 .init_machine = nhk8815_platform_init,
284 MACHINE_END
285