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/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
  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
 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
 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
 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
 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