kernel/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 <linux/sh_intc.h>
  24 #include <mach/urquell.h>
  25 #include <cpu/sh7786.h>
  26 #include <asm/heartbeat.h>
  27 #include <asm/sizes.h>
  28 #include <asm/smp-ops.h>
  29
  30 /*
  31  * bit  1234 5678
  32  *----------------------------
  33  * SW1  0101 0010  -> Pck 33MHz version
  34  *     (1101 0010)    Pck 66MHz version
  35  * SW2  0x1x xxxx  -> little endian
  36  *                    29bit mode
  37  * SW47 0001 1000  -> CS0 : on-board flash
  38  *                    CS1 : SRAM, registers, LAN, PCMCIA
  39  *                    38400 bps for SCIF1
  40  *
  41  * Address
  42  * 0x00000000 - 0x04000000  (CS0)     Nor Flash
  43  * 0x04000000 - 0x04200000  (CS1)     SRAM
  44  * 0x05000000 - 0x05800000  (CS1)     on board register
  45  * 0x05800000 - 0x06000000  (CS1)     LAN91C111
  46  * 0x06000000 - 0x06400000  (CS1)     PCMCIA
  47  * 0x08000000 - 0x10000000  (CS2-CS3) DDR3
  48  * 0x10000000 - 0x14000000  (CS4)     PCIe
  49  * 0x14000000 - 0x14800000  (CS5)     Core0 LRAM/URAM
  50  * 0x14800000 - 0x15000000  (CS5)     Core1 LRAM/URAM
  51  * 0x18000000 - 0x1C000000  (CS6)     ATA/NAND-Flash
  52  * 0x1C000000 -             (CS7)     SH7786 Control register
  53  */
  54
  55 /* HeartBeat */
  56 static struct resource heartbeat_resource = {
  57         .start  = BOARDREG(SLEDR),
  58         .end    = BOARDREG(SLEDR),
  59         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
  60 };
  61
  62 static struct platform_device heartbeat_device = {
  63         .name           = "heartbeat",
  64         .id             = -1,
  65         .num_resources  = 1,
  66         .resource       = &heartbeat_resource,
  67 };
  68
  69 /* LAN91C111 */
  70 static struct smc91x_platdata smc91x_info = {
  71         .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  72 };
  73
  74 static struct resource smc91x_eth_resources[] = {
  75         [0] = {
  76                 .name   = "SMC91C111" ,
  77                 .start  = 0x05800300,
  78                 .end    = 0x0580030f,
  79                 .flags  = IORESOURCE_MEM,
  80         },
  81         [1] = {
  82                 .start  = evt2irq(0x360),
  83                 .flags  = IORESOURCE_IRQ,
  84         },
  85 };
  86
  87 static struct platform_device smc91x_eth_device = {
  88         .name           = "smc91x",
  89         .num_resources  = ARRAY_SIZE(smc91x_eth_resources),
  90         .resource       = smc91x_eth_resources,
  91         .dev    = {
  92                 .platform_data  = &smc91x_info,
  93         },
  94 };
  95
  96 /* Nor Flash */
  97 static struct mtd_partition nor_flash_partitions[] = {
  98         {
  99                 .name           = "loader",
 100                 .offset         = 0x00000000,
 101                 .size           = SZ_512K,
 102                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
 103         },
 104         {
 105                 .name           = "bootenv",
 106                 .offset         = MTDPART_OFS_APPEND,
 107                 .size           = SZ_512K,
 108                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
 109         },
 110         {
 111                 .name           = "kernel",
 112                 .offset         = MTDPART_OFS_APPEND,
 113                 .size           = SZ_4M,
 114         },
 115         {
 116                 .name           = "data",
 117                 .offset         = MTDPART_OFS_APPEND,
 118                 .size           = MTDPART_SIZ_FULL,
 119         },
 120 };
 121
 122 static struct physmap_flash_data nor_flash_data = {
 123         .width          = 2,
 124         .parts          = nor_flash_partitions,
 125         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
 126 };
 127
 128 static struct resource nor_flash_resources[] = {
 129         [0] = {
 130                 .start  = NOR_FLASH_ADDR,
 131                 .end    = NOR_FLASH_ADDR + NOR_FLASH_SIZE - 1,
 132                 .flags  = IORESOURCE_MEM,
 133         }
 134 };
 135
 136 static struct platform_device nor_flash_device = {
 137         .name           = "physmap-flash",
 138         .dev            = {
 139                 .platform_data  = &nor_flash_data,
 140         },
 141         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 142         .resource       = nor_flash_resources,
 143 };
 144
 145 static struct platform_device *urquell_devices[] __initdata = {
 146         &heartbeat_device,
 147         &smc91x_eth_device,
 148         &nor_flash_device,
 149 };
 150
 151 static int __init urquell_devices_setup(void)
 152 {
 153         /* USB */
 154         gpio_request(GPIO_FN_USB_OVC0,  NULL);
 155         gpio_request(GPIO_FN_USB_PENC0, NULL);
 156
 157         /* enable LAN */
 158         __raw_writew(__raw_readw(UBOARDREG(IRL2MSKR)) & ~0x00000001,
 159                   UBOARDREG(IRL2MSKR));
 160
 161         return platform_add_devices(urquell_devices,
 162                                     ARRAY_SIZE(urquell_devices));
 163 }
 164 device_initcall(urquell_devices_setup);
 165
 166 static void urquell_power_off(void)
 167 {
 168         __raw_writew(0xa5a5, UBOARDREG(SRSTR));
 169 }
 170
 171 static void __init urquell_init_irq(void)
 172 {
 173         plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK);
 174 }
 175
 176 static int urquell_mode_pins(void)
 177 {
 178         return __raw_readw(UBOARDREG(MDSWMR));
 179 }
 180
 181 static int urquell_clk_init(void)
 182 {
 183         struct clk *clk;
 184         int ret;
 185
 186         /*
 187          * Only handle the EXTAL case, anyone interfacing a crystal
 188          * resonator will need to provide their own input clock.
 189          */
 190         if (test_mode_pin(MODE_PIN9))
 191                 return -EINVAL;
 192
 193         clk = clk_get(NULL, "extal");
 194         if (IS_ERR(clk))
 195                 return PTR_ERR(clk);
 196         ret = clk_set_rate(clk, 33333333);
 197         clk_put(clk);
 198
 199         return ret;
 200 }
 201
 202 /* Initialize the board */
 203 static void __init urquell_setup(char **cmdline_p)
 204 {
 205         printk(KERN_INFO "Renesas Technology Corp. Urquell support.\n");
 206
 207         pm_power_off = urquell_power_off;
 208
 209         register_smp_ops(&shx3_smp_ops);
 210 }
 211
 212 /*
 213  * The Machine Vector
 214  */
 215 static struct sh_machine_vector mv_urquell __initmv = {
 216         .mv_name        = "Urquell",
 217         .mv_setup       = urquell_setup,
 218         .mv_init_irq    = urquell_init_irq,
 219         .mv_mode_pins   = urquell_mode_pins,
 220         .mv_clk_init    = urquell_clk_init,
 221 };