arch/arm/mach-shmobile/board-marzen.c

   1 /*
   2  * marzen board support
   3  *
   4  * Copyright (C) 2011  Renesas Solutions Corp.
   5  * Copyright (C) 2011  Magnus Damm
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/init.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/irq.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/delay.h>
  27 #include <linux/io.h>
  28 #include <linux/gpio.h>
  29 #include <linux/dma-mapping.h>
  30 #include <linux/smsc911x.h>
  31 #include <mach/hardware.h>
  32 #include <mach/r8a7779.h>
  33 #include <mach/common.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/hardware/gic.h>
  39 #include <asm/traps.h>
  40
  41 /* SMSC LAN89218 */
  42 static struct resource smsc911x_resources[] = {
  43         [0] = {
  44                 .start          = 0x18000000, /* ExCS0 */
  45                 .end            = 0x180000ff, /* A1->A7 */
  46                 .flags          = IORESOURCE_MEM,
  47         },
  48         [1] = {
  49                 .start          = gic_spi(28), /* IRQ 1 */
  50                 .flags          = IORESOURCE_IRQ,
  51         },
  52 };
  53
  54 static struct smsc911x_platform_config smsc911x_platdata = {
  55         .flags          = SMSC911X_USE_32BIT, /* 32-bit SW on 16-bit HW bus */
  56         .phy_interface  = PHY_INTERFACE_MODE_MII,
  57         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  58         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  59 };
  60
  61 static struct platform_device eth_device = {
  62         .name           = "smsc911x",
  63         .id             = 0,
  64         .dev  = {
  65                 .platform_data = &smsc911x_platdata,
  66         },
  67         .resource       = smsc911x_resources,
  68         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  69 };
  70
  71 static struct platform_device *marzen_devices[] __initdata = {
  72         &eth_device,
  73 };
  74
  75 static struct map_desc marzen_io_desc[] __initdata = {
  76         /* 2M entity map for 0xf0000000 (MPCORE) */
  77         {
  78                 .virtual        = 0xf0000000,
  79                 .pfn            = __phys_to_pfn(0xf0000000),
  80                 .length         = SZ_2M,
  81                 .type           = MT_DEVICE_NONSHARED
  82         },
  83         /* 16M entity map for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
  84         {
  85                 .virtual        = 0xfe000000,
  86                 .pfn            = __phys_to_pfn(0xfe000000),
  87                 .length         = SZ_16M,
  88                 .type           = MT_DEVICE_NONSHARED
  89         },
  90 };
  91
  92 static void __init marzen_map_io(void)
  93 {
  94         iotable_init(marzen_io_desc, ARRAY_SIZE(marzen_io_desc));
  95 }
  96
  97 static void __init marzen_init_early(void)
  98 {
  99         r8a7779_add_early_devices();
 100
 101         /* Early serial console setup is not included here due to
 102          * memory map collisions. The SCIF serial ports in r8a7779
 103          * are difficult to entity map 1:1 due to collision with the
 104          * virtual memory range used by the coherent DMA code on ARM.
 105          *
 106          * Anyone wanting to debug early can remove UPF_IOREMAP from
 107          * the sh-sci serial console platform data, adjust mapbase
 108          * to a static M:N virt:phys mapping that needs to be added to
 109          * the mappings passed with iotable_init() above.
 110          *
 111          * Then add a call to shmobile_setup_console() from this function.
 112          *
 113          * As a final step pass earlyprint=sh-sci.2,115200 on the kernel
 114          * command line.
 115          */
 116 }
 117
 118 static void __init marzen_init(void)
 119 {
 120         r8a7779_pinmux_init();
 121
 122         /* SCIF2 (CN18: DEBUG0) */
 123         gpio_request(GPIO_FN_TX2_C, NULL);
 124         gpio_request(GPIO_FN_RX2_C, NULL);
 125
 126         /* SCIF4 (CN19: DEBUG1) */
 127         gpio_request(GPIO_FN_TX4, NULL);
 128         gpio_request(GPIO_FN_RX4, NULL);
 129
 130         /* LAN89218 */
 131         gpio_request(GPIO_FN_EX_CS0, NULL); /* nCS */
 132         gpio_request(GPIO_FN_IRQ1_B, NULL); /* IRQ + PME */
 133
 134         r8a7779_add_standard_devices();
 135         platform_add_devices(marzen_devices, ARRAY_SIZE(marzen_devices));
 136 }
 137
 138 static void __init marzen_timer_init(void)
 139 {
 140         r8a7779_clock_init();
 141         shmobile_timer.init();
 142         return;
 143 }
 144
 145 struct sys_timer marzen_timer = {
 146         .init   = marzen_timer_init,
 147 };
 148
 149 MACHINE_START(MARZEN, "marzen")
 150         .map_io         = marzen_map_io,
 151         .init_early     = marzen_init_early,
 152         .nr_irqs        = NR_IRQS_LEGACY,
 153         .init_irq       = r8a7779_init_irq,
 154         .handle_irq     = gic_handle_irq,
 155         .init_machine   = marzen_init,
 156         .timer          = &marzen_timer,
 157 MACHINE_END