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/hardware/vic.h>
25 #include <asm/sizes.h>
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/irq.h>
29 #include <asm/mach/flash.h>
30
31 #include <plat/gpio-nomadik.h>
32 #include <plat/mtu.h>
33
34 #include <mach/setup.h>
35 #include <mach/nand.h>
36 #include <mach/fsmc.h>
37
38 #include "cpu-8815.h"
39
40 /* Initial value for SRC control register: all timers use MXTAL/8 source */
41 #define SRC_CR_INIT_MASK 0x00007fff
42 #define SRC_CR_INIT_VAL 0x2aaa8000
43
44 /* These addresses span 16MB, so use three individual pages */
45 static struct resource nhk8815_nand_resources[] = {
46 {
47 .name = "nand_addr",
48 .start = NAND_IO_ADDR,
49 .end = NAND_IO_ADDR + 0xfff,
50 .flags = IORESOURCE_MEM,
51 }, {
52 .name = "nand_cmd",
53 .start = NAND_IO_CMD,
54 .end = NAND_IO_CMD + 0xfff,
55 .flags = IORESOURCE_MEM,
56 }, {
57 .name = "nand_data",
58 .start = NAND_IO_DATA,
59 .end = NAND_IO_DATA + 0xfff,
60 .flags = IORESOURCE_MEM,
61 }
62 };
63
nhk8815_nand_init(void)64 static int nhk8815_nand_init(void)
65 {
66 /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
67 writel(0x0000000E, FSMC_PCR(0));
68 writel(0x000D0A00, FSMC_PMEM(0));
69 writel(0x00100A00, FSMC_PATT(0));
70
71 /* enable access to the chip select area */
72 writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
73
74 return 0;
75 }
76
77 /*
78 * These partitions are the same as those used in the 2.6.20 release
79 * shipped by the vendor; the first two partitions are mandated
80 * by the boot ROM, and the bootloader area is somehow oversized...
81 */
82 static struct mtd_partition nhk8815_partitions[] = {
83 {
84 .name = "X-Loader(NAND)",
85 .offset = 0,
86 .size = SZ_256K,
87 }, {
88 .name = "MemInit(NAND)",
89 .offset = MTDPART_OFS_APPEND,
90 .size = SZ_256K,
91 }, {
92 .name = "BootLoader(NAND)",
93 .offset = MTDPART_OFS_APPEND,
94 .size = SZ_2M,
95 }, {
96 .name = "Kernel zImage(NAND)",
97 .offset = MTDPART_OFS_APPEND,
98 .size = 3 * SZ_1M,
99 }, {
100 .name = "Root Filesystem(NAND)",
101 .offset = MTDPART_OFS_APPEND,
102 .size = 22 * SZ_1M,
103 }, {
104 .name = "User Filesystem(NAND)",
105 .offset = MTDPART_OFS_APPEND,
106 .size = MTDPART_SIZ_FULL,
107 }
108 };
109
110 static struct nomadik_nand_platform_data nhk8815_nand_data = {
111 .parts = nhk8815_partitions,
112 .nparts = ARRAY_SIZE(nhk8815_partitions),
113 .options = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
114 | NAND_NO_READRDY | NAND_NO_AUTOINCR,
115 .init = nhk8815_nand_init,
116 };
117
118 static struct platform_device nhk8815_nand_device = {
119 .name = "nomadik_nand",
120 .dev = {
121 .platform_data = &nhk8815_nand_data,
122 },
123 .resource = nhk8815_nand_resources,
124 .num_resources = ARRAY_SIZE(nhk8815_nand_resources),
125 };
126
127 /* These are the partitions for the OneNand device, different from above */
128 static struct mtd_partition nhk8815_onenand_partitions[] = {
129 {
130 .name = "X-Loader(OneNAND)",
131 .offset = 0,
132 .size = SZ_256K,
133 }, {
134 .name = "MemInit(OneNAND)",
135 .offset = MTDPART_OFS_APPEND,
136 .size = SZ_256K,
137 }, {
138 .name = "BootLoader(OneNAND)",
139 .offset = MTDPART_OFS_APPEND,
140 .size = SZ_2M-SZ_256K,
141 }, {
142 .name = "SysImage(OneNAND)",
143 .offset = MTDPART_OFS_APPEND,
144 .size = 4 * SZ_1M,
145 }, {
146 .name = "Root Filesystem(OneNAND)",
147 .offset = MTDPART_OFS_APPEND,
148 .size = 22 * SZ_1M,
149 }, {
150 .name = "User Filesystem(OneNAND)",
151 .offset = MTDPART_OFS_APPEND,
152 .size = MTDPART_SIZ_FULL,
153 }
154 };
155
156 static struct onenand_platform_data nhk8815_onenand_data = {
157 .parts = nhk8815_onenand_partitions,
158 .nr_parts = ARRAY_SIZE(nhk8815_onenand_partitions),
159 };
160
161 static struct resource nhk8815_onenand_resource[] = {
162 {
163 .start = 0x30000000,
164 .end = 0x30000000 + SZ_128K - 1,
165 .flags = IORESOURCE_MEM,
166 },
167 };
168
169 static struct platform_device nhk8815_onenand_device = {
170 .name = "onenand-flash",
171 .id = -1,
172 .dev = {
173 .platform_data = &nhk8815_onenand_data,
174 },
175 .resource = nhk8815_onenand_resource,
176 .num_resources = ARRAY_SIZE(nhk8815_onenand_resource),
177 };
178
nhk8815_onenand_init(void)179 static void __init nhk8815_onenand_init(void)
180 {
181 #ifdef CONFIG_MTD_ONENAND
182 /* Set up SMCS0 for OneNand */
183 writel(0x000030db, FSMC_BCR(0));
184 writel(0x02100551, FSMC_BTR(0));
185 #endif
186 }
187
188 #define __MEM_4K_RESOURCE(x) \
189 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
190
191 static struct amba_device uart0_device = {
192 .dev = { .init_name = "uart0" },
193 __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
194 .irq = {IRQ_UART0, NO_IRQ},
195 };
196
197 static struct amba_device uart1_device = {
198 .dev = { .init_name = "uart1" },
199 __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
200 .irq = {IRQ_UART1, NO_IRQ},
201 };
202
203 static struct amba_device *amba_devs[] __initdata = {
204 &uart0_device,
205 &uart1_device,
206 };
207
208 static struct resource nhk8815_eth_resources[] = {
209 {
210 .name = "smc91x-regs",
211 .start = 0x34000000 + 0x300,
212 .end = 0x34000000 + SZ_64K - 1,
213 .flags = IORESOURCE_MEM,
214 }, {
215 .start = NOMADIK_GPIO_TO_IRQ(115),
216 .end = NOMADIK_GPIO_TO_IRQ(115),
217 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
218 }
219 };
220
221 static struct platform_device nhk8815_eth_device = {
222 .name = "smc91x",
223 .resource = nhk8815_eth_resources,
224 .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
225 };
226
nhk8815_eth_init(void)227 static int __init nhk8815_eth_init(void)
228 {
229 int gpio_nr = 115; /* hardwired in the board */
230 int err;
231
232 err = gpio_request(gpio_nr, "eth_irq");
233 if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
234 if (!err) err = gpio_direction_input(gpio_nr);
235 if (err)
236 pr_err("Error %i in %s\n", err, __func__);
237 return err;
238 }
239 device_initcall(nhk8815_eth_init);
240
241 static struct platform_device *nhk8815_platform_devices[] __initdata = {
242 &nhk8815_nand_device,
243 &nhk8815_onenand_device,
244 &nhk8815_eth_device,
245 /* will add more devices */
246 };
247
nomadik_timer_init(void)248 static void __init nomadik_timer_init(void)
249 {
250 u32 src_cr;
251
252 /* Configure timer sources in "system reset controller" ctrl reg */
253 src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
254 src_cr &= SRC_CR_INIT_MASK;
255 src_cr |= SRC_CR_INIT_VAL;
256 writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
257
258 /* Save global pointer to mtu, used by platform timer code */
259 mtu_base = io_p2v(NOMADIK_MTU0_BASE);
260
261 nmdk_timer_init();
262 }
263
264 static struct sys_timer nomadik_timer = {
265 .init = nomadik_timer_init,
266 };
267
nhk8815_platform_init(void)268 static void __init nhk8815_platform_init(void)
269 {
270 int i;
271
272 cpu8815_platform_init();
273 nhk8815_onenand_init();
274 platform_add_devices(nhk8815_platform_devices,
275 ARRAY_SIZE(nhk8815_platform_devices));
276
277 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
278 amba_device_register(amba_devs[i], &iomem_resource);
279 }
280
281 MACHINE_START(NOMADIK, "NHK8815")
282 /* Maintainer: ST MicroElectronics */
283 .atag_offset = 0x100,
284 .map_io = cpu8815_map_io,
285 .init_irq = cpu8815_init_irq,
286 .handle_irq = vic_handle_irq,
287 .timer = &nomadik_timer,
288 .init_machine = nhk8815_platform_init,
289 .restart = cpu8815_restart,
290 MACHINE_END
291