release/src-rt-6.x.4708/linux/linux-2.6.36/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 */
  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
  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
 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
 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
 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
 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         .phys_io        = NOMADIK_UART0_BASE,
 280         .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
 281         .boot_params    = 0x100,
 282         .map_io         = cpu8815_map_io,
 283         .init_irq       = cpu8815_init_irq,
 284         .timer          = &nomadik_timer,
 285         .init_machine   = nhk8815_platform_init,
 286 MACHINE_END