Root/arch/arm/mach-nomadik/board-nhk8815.c

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 */
41static 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
60static 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 */
78static 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
106static 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
114static 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 */
124static 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
152static struct onenand_platform_data nhk8815_onenand_data = {
153    .parts = nhk8815_onenand_partitions,
154    .nr_parts = ARRAY_SIZE(nhk8815_onenand_partitions),
155};
156
157static struct resource nhk8815_onenand_resource[] = {
158    {
159        .start = 0x30000000,
160        .end = 0x30000000 + SZ_128K - 1,
161        .flags = IORESOURCE_MEM,
162    },
163};
164
165static 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
175static 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
187static 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
193static 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
199static struct amba_device *amba_devs[] __initdata = {
200    &uart0_device,
201    &uart1_device,
202};
203
204static 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
217static struct platform_device nhk8815_eth_device = {
218    .name = "smc91x",
219    .resource = nhk8815_eth_resources,
220    .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
221};
222
223static 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}
235device_initcall(nhk8815_eth_init);
236
237static 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
244static 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
260static struct sys_timer nomadik_timer = {
261    .init = nomadik_timer_init,
262};
263
264static 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
277MACHINE_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,
284MACHINE_END
285

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