linux/arch/arm/mach-nomadik/board-nhk8815.c
<<
>>
Prefs
   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