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/partitions.h>
  22 #include <linux/io.h>
  23 #include <asm/sizes.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/irq.h>
  27 #include <asm/mach/flash.h>
  28 #include <mach/setup.h>
  29 #include <mach/nand.h>
  30 #include <mach/fsmc.h>
  31 #include "clock.h"
  32
  33 /* These adresses span 16MB, so use three individual pages */
  34 static struct resource nhk8815_nand_resources[] = {
  35         {
  36                 .name = "nand_addr",
  37                 .start = NAND_IO_ADDR,
  38                 .end = NAND_IO_ADDR + 0xfff,
  39                 .flags = IORESOURCE_MEM,
  40         }, {
  41                 .name = "nand_cmd",
  42                 .start = NAND_IO_CMD,
  43                 .end = NAND_IO_CMD + 0xfff,
  44                 .flags = IORESOURCE_MEM,
  45         }, {
  46                 .name = "nand_data",
  47                 .start = NAND_IO_DATA,
  48                 .end = NAND_IO_DATA + 0xfff,
  49                 .flags = IORESOURCE_MEM,
  50         }
  51 };
  52
  53 static int nhk8815_nand_init(void)
  54 {
  55         /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
  56         writel(0x0000000E, FSMC_PCR(0));
  57         writel(0x000D0A00, FSMC_PMEM(0));
  58         writel(0x00100A00, FSMC_PATT(0));
  59
  60         /* enable access to the chip select area */
  61         writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
  62
  63         return 0;
  64 }
  65
  66 /*
  67  * These partitions are the same as those used in the 2.6.20 release
  68  * shipped by the vendor; the first two partitions are mandated
  69  * by the boot ROM, and the bootloader area is somehow oversized...
  70  */
  71 static struct mtd_partition nhk8815_partitions[] = {
  72         {
  73                 .name   = "X-Loader(NAND)",
  74                 .offset = 0,
  75                 .size   = SZ_256K,
  76         }, {
  77                 .name   = "MemInit(NAND)",
  78                 .offset = MTDPART_OFS_APPEND,
  79                 .size   = SZ_256K,
  80         }, {
  81                 .name   = "BootLoader(NAND)",
  82                 .offset = MTDPART_OFS_APPEND,
  83                 .size   = SZ_2M,
  84         }, {
  85                 .name   = "Kernel zImage(NAND)",
  86                 .offset = MTDPART_OFS_APPEND,
  87                 .size   = 3 * SZ_1M,
  88         }, {
  89                 .name   = "Root Filesystem(NAND)",
  90                 .offset = MTDPART_OFS_APPEND,
  91                 .size   = 22 * SZ_1M,
  92         }, {
  93                 .name   = "User Filesystem(NAND)",
  94                 .offset = MTDPART_OFS_APPEND,
  95                 .size   = MTDPART_SIZ_FULL,
  96         }
  97 };
  98
  99 static struct nomadik_nand_platform_data nhk8815_nand_data = {
 100         .parts          = nhk8815_partitions,
 101         .nparts         = ARRAY_SIZE(nhk8815_partitions),
 102         .options        = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
 103                         | NAND_NO_READRDY | NAND_NO_AUTOINCR,
 104         .init           = nhk8815_nand_init,
 105 };
 106
 107 static struct platform_device nhk8815_nand_device = {
 108         .name           = "nomadik_nand",
 109         .dev            = {
 110                 .platform_data = &nhk8815_nand_data,
 111         },
 112         .resource       = nhk8815_nand_resources,
 113         .num_resources  = ARRAY_SIZE(nhk8815_nand_resources),
 114 };
 115
 116 /* These are the partitions for the OneNand device, different from above */
 117 static struct mtd_partition nhk8815_onenand_partitions[] = {
 118         {
 119                 .name   = "X-Loader(OneNAND)",
 120                 .offset = 0,
 121                 .size   = SZ_256K,
 122         }, {
 123                 .name   = "MemInit(OneNAND)",
 124                 .offset = MTDPART_OFS_APPEND,
 125                 .size   = SZ_256K,
 126         }, {
 127                 .name   = "BootLoader(OneNAND)",
 128                 .offset = MTDPART_OFS_APPEND,
 129                 .size   = SZ_2M-SZ_256K,
 130         }, {
 131                 .name   = "SysImage(OneNAND)",
 132                 .offset = MTDPART_OFS_APPEND,
 133                 .size   = 4 * SZ_1M,
 134         }, {
 135                 .name   = "Root Filesystem(OneNAND)",
 136                 .offset = MTDPART_OFS_APPEND,
 137                 .size   = 22 * SZ_1M,
 138         }, {
 139                 .name   = "User Filesystem(OneNAND)",
 140                 .offset = MTDPART_OFS_APPEND,
 141                 .size   = MTDPART_SIZ_FULL,
 142         }
 143 };
 144
 145 static struct flash_platform_data nhk8815_onenand_data = {
 146         .parts          = nhk8815_onenand_partitions,
 147         .nr_parts       = ARRAY_SIZE(nhk8815_onenand_partitions),
 148 };
 149
 150 static struct resource nhk8815_onenand_resource[] = {
 151         {
 152                 .start          = 0x30000000,
 153                 .end            = 0x30000000 + SZ_128K - 1,
 154                 .flags          = IORESOURCE_MEM,
 155         },
 156 };
 157
 158 static struct platform_device nhk8815_onenand_device = {
 159         .name           = "onenand",
 160         .id             = -1,
 161         .dev            = {
 162                 .platform_data  = &nhk8815_onenand_data,
 163         },
 164         .resource       = nhk8815_onenand_resource,
 165         .num_resources  = ARRAY_SIZE(nhk8815_onenand_resource),
 166 };
 167
 168 static void __init nhk8815_onenand_init(void)
 169 {
 170 #ifdef CONFIG_ONENAND
 171        /* Set up SMCS0 for OneNand */
 172        writel(0x000030db, FSMC_BCR0);
 173        writel(0x02100551, FSMC_BTR0);
 174 #endif
 175 }
 176
 177 #define __MEM_4K_RESOURCE(x) \
 178         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
 179
 180 static struct amba_device uart0_device = {
 181         .dev = { .init_name = "uart0" },
 182         __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
 183         .irq = {IRQ_UART0, NO_IRQ},
 184 };
 185
 186 static struct amba_device uart1_device = {
 187         .dev = { .init_name = "uart1" },
 188         __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
 189         .irq = {IRQ_UART1, NO_IRQ},
 190 };
 191
 192 static struct amba_device *amba_devs[] __initdata = {
 193         &uart0_device,
 194         &uart1_device,
 195 };
 196
 197 /* We have a fixed clock alone, by now */
 198 static struct clk nhk8815_clk_48 = {
 199         .rate = 48*1000*1000,
 200 };
 201
 202 static struct resource nhk8815_eth_resources[] = {
 203         {
 204                 .name = "smc91x-regs",
 205                 .start = 0x34000000 + 0x300,
 206                 .end = 0x34000000 + SZ_64K - 1,
 207                 .flags = IORESOURCE_MEM,
 208         }, {
 209                 .start = NOMADIK_GPIO_TO_IRQ(115),
 210                 .end = NOMADIK_GPIO_TO_IRQ(115),
 211                 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
 212         }
 213 };
 214
 215 static struct platform_device nhk8815_eth_device = {
 216         .name = "smc91x",
 217         .resource = nhk8815_eth_resources,
 218         .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
 219 };
 220
 221 static int __init nhk8815_eth_init(void)
 222 {
 223         int gpio_nr = 115; /* hardwired in the board */
 224         int err;
 225
 226         err = gpio_request(gpio_nr, "eth_irq");
 227         if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
 228         if (!err) err = gpio_direction_input(gpio_nr);
 229         if (err)
 230                 pr_err("Error %i in %s\n", err, __func__);
 231         return err;
 232 }
 233 device_initcall(nhk8815_eth_init);
 234
 235 static struct platform_device *nhk8815_platform_devices[] __initdata = {
 236         &nhk8815_nand_device,
 237         &nhk8815_onenand_device,
 238         &nhk8815_eth_device,
 239         /* will add more devices */
 240 };
 241
 242 static void __init nhk8815_platform_init(void)
 243 {
 244         int i;
 245
 246         cpu8815_platform_init();
 247         nhk8815_onenand_init();
 248         platform_add_devices(nhk8815_platform_devices,
 249                              ARRAY_SIZE(nhk8815_platform_devices));
 250
 251         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 252                 nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
 253                 amba_device_register(amba_devs[i], &iomem_resource);
 254         }
 255 }
 256
 257 MACHINE_START(NOMADIK, "NHK8815")
 258         /* Maintainer: ST MicroElectronics */
 259         .phys_io        = NOMADIK_UART0_BASE,
 260         .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
 261         .boot_params    = 0x100,
 262         .map_io         = cpu8815_map_io,
 263         .init_irq       = cpu8815_init_irq,
 264         .timer          = &nomadik_timer,
 265         .init_machine   = nhk8815_platform_init,
 266 MACHINE_END