arch/sh/boards/board-urquell.c

   1 /*
   2  * Renesas Technology Corp. SH7786 Urquell Support.
   3  *
   4  * Copyright (C) 2008  Kuninori Morimoto <morimoto.kuninori@renesas.com>
   5  * Copyright (C) 2009, 2010  Paul Mundt
   6  *
   7  * Based on board-sh7785lcr.c
   8  * Copyright (C) 2008  Yoshihiro Shimoda
   9  *
  10  * This file is subject to the terms and conditions of the GNU General Public
  11  * License.  See the file "COPYING" in the main directory of this archive
  12  * for more details.
  13  */
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/fb.h>
  17 #include <linux/smc91x.h>
  18 #include <linux/mtd/physmap.h>
  19 #include <linux/delay.h>
  20 #include <linux/gpio.h>
  21 #include <linux/irq.h>
  22 #include <linux/clk.h>
  23 #include <mach/urquell.h>
  24 #include <cpu/sh7786.h>
  25 #include <asm/heartbeat.h>
  26 #include <asm/sizes.h>
  27 #include <asm/smp-ops.h>
  28
  29 /*
  30  * bit  1234 5678
  31  *----------------------------
  32  * SW1  0101 0010  -> Pck 33MHz version
  33  *     (1101 0010)    Pck 66MHz version
  34  * SW2  0x1x xxxx  -> little endian
  35  *                    29bit mode
  36  * SW47 0001 1000  -> CS0 : on-board flash
  37  *                    CS1 : SRAM, registers, LAN, PCMCIA
  38  *                    38400 bps for SCIF1
  39  *
  40  * Address
  41  * 0x00000000 - 0x04000000  (CS0)     Nor Flash
  42  * 0x04000000 - 0x04200000  (CS1)     SRAM
  43  * 0x05000000 - 0x05800000  (CS1)     on board register
  44  * 0x05800000 - 0x06000000  (CS1)     LAN91C111
  45  * 0x06000000 - 0x06400000  (CS1)     PCMCIA
  46  * 0x08000000 - 0x10000000  (CS2-CS3) DDR3
  47  * 0x10000000 - 0x14000000  (CS4)     PCIe
  48  * 0x14000000 - 0x14800000  (CS5)     Core0 LRAM/URAM
  49  * 0x14800000 - 0x15000000  (CS5)     Core1 LRAM/URAM
  50  * 0x18000000 - 0x1C000000  (CS6)     ATA/NAND-Flash
  51  * 0x1C000000 -             (CS7)     SH7786 Control register
  52  */
  53
  54 /* HeartBeat */
  55 static struct resource heartbeat_resource = {
  56         .start  = BOARDREG(SLEDR),
  57         .end    = BOARDREG(SLEDR),
  58         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
  59 };
  60
  61 static struct platform_device heartbeat_device = {
  62         .name           = "heartbeat",
  63         .id             = -1,
  64         .num_resources  = 1,
  65         .resource       = &heartbeat_resource,
  66 };
  67
  68 /* LAN91C111 */
  69 static struct smc91x_platdata smc91x_info = {
  70         .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  71 };
  72
  73 static struct resource smc91x_eth_resources[] = {
  74         [0] = {
  75                 .name   = "SMC91C111" ,
  76                 .start  = 0x05800300,
  77                 .end    = 0x0580030f,
  78                 .flags  = IORESOURCE_MEM,
  79         },
  80         [1] = {
  81                 .start  = 11,
  82                 .flags  = IORESOURCE_IRQ,
  83         },
  84 };
  85
  86 static struct platform_device smc91x_eth_device = {
  87         .name           = "smc91x",
  88         .num_resources  = ARRAY_SIZE(smc91x_eth_resources),
  89         .resource       = smc91x_eth_resources,
  90         .dev    = {
  91                 .platform_data  = &smc91x_info,
  92         },
  93 };
  94
  95 /* Nor Flash */
  96 static struct mtd_partition nor_flash_partitions[] = {
  97         {
  98                 .name           = "loader",
  99                 .offset         = 0x00000000,
 100                 .size           = SZ_512K,
 101                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
 102         },
 103         {
 104                 .name           = "bootenv",
 105                 .offset         = MTDPART_OFS_APPEND,
 106                 .size           = SZ_512K,
 107                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
 108         },
 109         {
 110                 .name           = "kernel",
 111                 .offset         = MTDPART_OFS_APPEND,
 112                 .size           = SZ_4M,
 113         },
 114         {
 115                 .name           = "data",
 116                 .offset         = MTDPART_OFS_APPEND,
 117                 .size           = MTDPART_SIZ_FULL,
 118         },
 119 };
 120
 121 static struct physmap_flash_data nor_flash_data = {
 122         .width          = 2,
 123         .parts          = nor_flash_partitions,
 124         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
 125 };
 126
 127 static struct resource nor_flash_resources[] = {
 128         [0] = {
 129                 .start  = NOR_FLASH_ADDR,
 130                 .end    = NOR_FLASH_ADDR + NOR_FLASH_SIZE - 1,
 131                 .flags  = IORESOURCE_MEM,
 132         }
 133 };
 134
 135 static struct platform_device nor_flash_device = {
 136         .name           = "physmap-flash",
 137         .dev            = {
 138                 .platform_data  = &nor_flash_data,
 139         },
 140         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 141         .resource       = nor_flash_resources,
 142 };
 143
 144 static struct platform_device *urquell_devices[] __initdata = {
 145         &heartbeat_device,
 146         &smc91x_eth_device,
 147         &nor_flash_device,
 148 };
 149
 150 static int __init urquell_devices_setup(void)
 151 {
 152         /* USB */
 153         gpio_request(GPIO_FN_USB_OVC0,  NULL);
 154         gpio_request(GPIO_FN_USB_PENC0, NULL);
 155
 156         /* enable LAN */
 157         __raw_writew(__raw_readw(UBOARDREG(IRL2MSKR)) & ~0x00000001,
 158                   UBOARDREG(IRL2MSKR));
 159
 160         return platform_add_devices(urquell_devices,
 161                                     ARRAY_SIZE(urquell_devices));
 162 }
 163 device_initcall(urquell_devices_setup);
 164
 165 static void urquell_power_off(void)
 166 {
 167         __raw_writew(0xa5a5, UBOARDREG(SRSTR));
 168 }
 169
 170 static void __init urquell_init_irq(void)
 171 {
 172         plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK);
 173 }
 174
 175 static int urquell_mode_pins(void)
 176 {
 177         return __raw_readw(UBOARDREG(MDSWMR));
 178 }
 179
 180 static int urquell_clk_init(void)
 181 {
 182         struct clk *clk;
 183         int ret;
 184
 185         /*
 186          * Only handle the EXTAL case, anyone interfacing a crystal
 187          * resonator will need to provide their own input clock.
 188          */
 189         if (test_mode_pin(MODE_PIN9))
 190                 return -EINVAL;
 191
 192         clk = clk_get(NULL, "extal");
 193         if (!clk || IS_ERR(clk))
 194                 return PTR_ERR(clk);
 195         ret = clk_set_rate(clk, 33333333);
 196         clk_put(clk);
 197
 198         return ret;
 199 }
 200
 201 /* Initialize the board */
 202 static void __init urquell_setup(char **cmdline_p)
 203 {
 204         printk(KERN_INFO "Renesas Technology Corp. Urquell support.\n");
 205
 206         pm_power_off = urquell_power_off;
 207
 208         register_smp_ops(&shx3_smp_ops);
 209 }
 210
 211 /*
 212  * The Machine Vector
 213  */
 214 static struct sh_machine_vector mv_urquell __initmv = {
 215         .mv_name        = "Urquell",
 216         .mv_setup       = urquell_setup,
 217         .mv_init_irq    = urquell_init_irq,
 218         .mv_mode_pins   = urquell_mode_pins,
 219         .mv_clk_init    = urquell_clk_init,
 220 };