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