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 #include "clock.h"
  36
  37 /* Initial value for SRC control register: all timers use MXTAL/8 source */
  38 #define SRC_CR_INIT_MASK        0x00007fff
  39 #define SRC_CR_INIT_VAL         0x2aaa8000
  40
  41 /* These adresses span 16MB, so use three individual pages */
  42 static struct resource nhk8815_nand_resources[] = {
  43         {
  44                 .name = "nand_addr",
  45                 .start = NAND_IO_ADDR,
  46                 .end = NAND_IO_ADDR + 0xfff,
  47                 .flags = IORESOURCE_MEM,
  48         }, {
  49                 .name = "nand_cmd",
  50                 .start = NAND_IO_CMD,
  51                 .end = NAND_IO_CMD + 0xfff,
  52                 .flags = IORESOURCE_MEM,
  53         }, {
  54                 .name = "nand_data",
  55                 .start = NAND_IO_DATA,
  56                 .end = NAND_IO_DATA + 0xfff,
  57                 .flags = IORESOURCE_MEM,
  58         }
  59 };
  60
  61 static int nhk8815_nand_init(void)
  62 {
  63         /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
  64         writel(0x0000000E, FSMC_PCR(0));
  65         writel(0x000D0A00, FSMC_PMEM(0));
  66         writel(0x00100A00, FSMC_PATT(0));
  67
  68         /* enable access to the chip select area */
  69         writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
  70
  71         return 0;
  72 }
  73
  74 /*
  75  * These partitions are the same as those used in the 2.6.20 release
  76  * shipped by the vendor; the first two partitions are mandated
  77  * by the boot ROM, and the bootloader area is somehow oversized...
  78  */
  79 static struct mtd_partition nhk8815_partitions[] = {
  80         {
  81                 .name   = "X-Loader(NAND)",
  82                 .offset = 0,
  83                 .size   = SZ_256K,
  84         }, {
  85                 .name   = "MemInit(NAND)",
  86                 .offset = MTDPART_OFS_APPEND,
  87                 .size   = SZ_256K,
  88         }, {
  89                 .name   = "BootLoader(NAND)",
  90                 .offset = MTDPART_OFS_APPEND,
  91                 .size   = SZ_2M,
  92         }, {
  93                 .name   = "Kernel zImage(NAND)",
  94                 .offset = MTDPART_OFS_APPEND,
  95                 .size   = 3 * SZ_1M,
  96         }, {
  97                 .name   = "Root Filesystem(NAND)",
  98                 .offset = MTDPART_OFS_APPEND,
  99                 .size   = 22 * SZ_1M,
 100         }, {
 101                 .name   = "User Filesystem(NAND)",
 102                 .offset = MTDPART_OFS_APPEND,
 103                 .size   = MTDPART_SIZ_FULL,
 104         }
 105 };
 106
 107 static struct nomadik_nand_platform_data nhk8815_nand_data = {
 108         .parts          = nhk8815_partitions,
 109         .nparts         = ARRAY_SIZE(nhk8815_partitions),
 110         .options        = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
 111                         | NAND_NO_READRDY | NAND_NO_AUTOINCR,
 112         .init           = nhk8815_nand_init,
 113 };
 114
 115 static struct platform_device nhk8815_nand_device = {
 116         .name           = "nomadik_nand",
 117         .dev            = {
 118                 .platform_data = &nhk8815_nand_data,
 119         },
 120         .resource       = nhk8815_nand_resources,
 121         .num_resources  = ARRAY_SIZE(nhk8815_nand_resources),
 122 };
 123
 124 /* These are the partitions for the OneNand device, different from above */
 125 static struct mtd_partition nhk8815_onenand_partitions[] = {
 126         {
 127                 .name   = "X-Loader(OneNAND)",
 128                 .offset = 0,
 129                 .size   = SZ_256K,
 130         }, {
 131                 .name   = "MemInit(OneNAND)",
 132                 .offset = MTDPART_OFS_APPEND,
 133                 .size   = SZ_256K,
 134         }, {
 135                 .name   = "BootLoader(OneNAND)",
 136                 .offset = MTDPART_OFS_APPEND,
 137                 .size   = SZ_2M-SZ_256K,
 138         }, {
 139                 .name   = "SysImage(OneNAND)",
 140                 .offset = MTDPART_OFS_APPEND,
 141                 .size   = 4 * SZ_1M,
 142         }, {
 143                 .name   = "Root Filesystem(OneNAND)",
 144                 .offset = MTDPART_OFS_APPEND,
 145                 .size   = 22 * SZ_1M,
 146         }, {
 147                 .name   = "User Filesystem(OneNAND)",
 148                 .offset = MTDPART_OFS_APPEND,
 149                 .size   = MTDPART_SIZ_FULL,
 150         }
 151 };
 152
 153 static struct onenand_platform_data nhk8815_onenand_data = {
 154         .parts          = nhk8815_onenand_partitions,
 155         .nr_parts       = ARRAY_SIZE(nhk8815_onenand_partitions),
 156 };
 157
 158 static struct resource nhk8815_onenand_resource[] = {
 159         {
 160                 .start          = 0x30000000,
 161                 .end            = 0x30000000 + SZ_128K - 1,
 162                 .flags          = IORESOURCE_MEM,
 163         },
 164 };
 165
 166 static struct platform_device nhk8815_onenand_device = {
 167         .name           = "onenand-flash",
 168         .id             = -1,
 169         .dev            = {
 170                 .platform_data  = &nhk8815_onenand_data,
 171         },
 172         .resource       = nhk8815_onenand_resource,
 173         .num_resources  = ARRAY_SIZE(nhk8815_onenand_resource),
 174 };
 175
 176 static void __init nhk8815_onenand_init(void)
 177 {
 178 #ifdef CONFIG_MTD_ONENAND
 179        /* Set up SMCS0 for OneNand */
 180         writel(0x000030db, FSMC_BCR(0));
 181         writel(0x02100551, FSMC_BTR(0));
 182 #endif
 183 }
 184
 185 #define __MEM_4K_RESOURCE(x) \
 186         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
 187
 188 static struct amba_device uart0_device = {
 189         .dev = { .init_name = "uart0" },
 190         __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
 191         .irq = {IRQ_UART0, NO_IRQ},
 192 };
 193
 194 static struct amba_device uart1_device = {
 195         .dev = { .init_name = "uart1" },
 196         __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
 197         .irq = {IRQ_UART1, NO_IRQ},
 198 };
 199
 200 static struct amba_device *amba_devs[] __initdata = {
 201         &uart0_device,
 202         &uart1_device,
 203 };
 204
 205 /* We have a fixed clock alone, by now */
 206 static struct clk nhk8815_clk_48 = {
 207         .rate = 48*1000*1000,
 208 };
 209
 210 static struct resource nhk8815_eth_resources[] = {
 211         {
 212                 .name = "smc91x-regs",
 213                 .start = 0x34000000 + 0x300,
 214                 .end = 0x34000000 + SZ_64K - 1,
 215                 .flags = IORESOURCE_MEM,
 216         }, {
 217                 .start = NOMADIK_GPIO_TO_IRQ(115),
 218                 .end = NOMADIK_GPIO_TO_IRQ(115),
 219                 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
 220         }
 221 };
 222
 223 static struct platform_device nhk8815_eth_device = {
 224         .name = "smc91x",
 225         .resource = nhk8815_eth_resources,
 226         .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
 227 };
 228
 229 static int __init nhk8815_eth_init(void)
 230 {
 231         int gpio_nr = 115; /* hardwired in the board */
 232         int err;
 233
 234         err = gpio_request(gpio_nr, "eth_irq");
 235         if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
 236         if (!err) err = gpio_direction_input(gpio_nr);
 237         if (err)
 238                 pr_err("Error %i in %s\n", err, __func__);
 239         return err;
 240 }
 241 device_initcall(nhk8815_eth_init);
 242
 243 static struct platform_device *nhk8815_platform_devices[] __initdata = {
 244         &nhk8815_nand_device,
 245         &nhk8815_onenand_device,
 246         &nhk8815_eth_device,
 247         /* will add more devices */
 248 };
 249
 250 static void __init nomadik_timer_init(void)
 251 {
 252         u32 src_cr;
 253
 254         /* Configure timer sources in "system reset controller" ctrl reg */
 255         src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
 256         src_cr &= SRC_CR_INIT_MASK;
 257         src_cr |= SRC_CR_INIT_VAL;
 258         writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
 259
 260         /* Save global pointer to mtu, used by platform timer code */
 261         mtu_base = io_p2v(NOMADIK_MTU0_BASE);
 262
 263         nmdk_timer_init();
 264 }
 265
 266 static struct sys_timer nomadik_timer = {
 267         .init   = nomadik_timer_init,
 268 };
 269
 270 static void __init nhk8815_platform_init(void)
 271 {
 272         int i;
 273
 274         cpu8815_platform_init();
 275         nhk8815_onenand_init();
 276         platform_add_devices(nhk8815_platform_devices,
 277                              ARRAY_SIZE(nhk8815_platform_devices));
 278
 279         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 280                 nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
 281                 amba_device_register(amba_devs[i], &iomem_resource);
 282         }
 283 }
 284
 285 MACHINE_START(NOMADIK, "NHK8815")
 286         /* Maintainer: ST MicroElectronics */
 287         .phys_io        = NOMADIK_UART0_BASE,
 288         .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
 289         .boot_params    = 0x100,
 290         .map_io         = cpu8815_map_io,
 291         .init_irq       = cpu8815_init_irq,
 292         .timer          = &nomadik_timer,
 293         .init_machine   = nhk8815_platform_init,
 294 MACHINE_END