arch/arm/mach-iop32x/glantank.c

   1 /*
   2  * arch/arm/mach-iop32x/glantank.c
   3  *
   4  * Board support code for the GLAN Tank.
   5  *
   6  * Copyright (C) 2006 Martin Michlmayr <tbm@cyrius.com>
   7  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #include <linux/mm.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/pci.h>
  19 #include <linux/string.h>
  20 #include <linux/slab.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/serial_8250.h>
  23 #include <linux/mtd/physmap.h>
  24 #include <linux/platform_device.h>
  25 #include <asm/hardware.h>
  26 #include <asm/io.h>
  27 #include <asm/irq.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/pci.h>
  31 #include <asm/mach/time.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/page.h>
  34
  35 /*
  36  * GLAN Tank timer tick configuration.
  37  */
  38 static void __init glantank_timer_init(void)
  39 {
  40         /* 33.333 MHz crystal.  */
  41         iop3xx_init_time(200000000);
  42 }
  43
  44 static struct sys_timer glantank_timer = {
  45         .init           = glantank_timer_init,
  46         .offset         = iop3xx_gettimeoffset,
  47 };
  48
  49
  50 /*
  51  * GLAN Tank I/O.
  52  */
  53 static struct map_desc glantank_io_desc[] __initdata = {
  54         {       /* on-board devices */
  55                 .virtual        = GLANTANK_UART,
  56                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  57                 .length         = 0x00100000,
  58                 .type           = MT_DEVICE
  59         },
  60 };
  61
  62 void __init glantank_map_io(void)
  63 {
  64         iop3xx_map_io();
  65         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  66 }
  67
  68
  69 /*
  70  * GLAN Tank PCI.
  71  */
  72 #define INTA    IRQ_IOP32X_XINT0
  73 #define INTB    IRQ_IOP32X_XINT1
  74 #define INTC    IRQ_IOP32X_XINT2
  75 #define INTD    IRQ_IOP32X_XINT3
  76
  77 static inline int __init
  78 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  79 {
  80         static int pci_irq_table[][4] = {
  81                 /*
  82                  * PCI IDSEL/INTPIN->INTLINE
  83                  * A       B       C       D
  84                  */
  85                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  86                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  87                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  88                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  89         };
  90
  91         BUG_ON(pin < 1 || pin > 4);
  92
  93         return pci_irq_table[slot % 4][pin - 1];
  94 }
  95
  96 static struct hw_pci glantank_pci __initdata = {
  97         .swizzle        = pci_std_swizzle,
  98         .nr_controllers = 1,
  99         .setup          = iop3xx_pci_setup,
 100         .preinit        = iop3xx_pci_preinit,
 101         .scan           = iop3xx_pci_scan_bus,
 102         .map_irq        = glantank_pci_map_irq,
 103 };
 104
 105 static int __init glantank_pci_init(void)
 106 {
 107         if (machine_is_glantank())
 108                 pci_common_init(&glantank_pci);
 109
 110         return 0;
 111 }
 112
 113 subsys_initcall(glantank_pci_init);
 114
 115
 116 /*
 117  * GLAN Tank machine initialization.
 118  */
 119 static struct physmap_flash_data glantank_flash_data = {
 120         .width          = 1,
 121 };
 122
 123 static struct resource glantank_flash_resource = {
 124         .start          = 0xf0000000,
 125         .end            = 0xf007ffff,
 126         .flags          = IORESOURCE_MEM,
 127 };
 128
 129 static struct platform_device glantank_flash_device = {
 130         .name           = "physmap-flash",
 131         .id             = 0,
 132         .dev            = {
 133                 .platform_data  = &glantank_flash_data,
 134         },
 135         .num_resources  = 1,
 136         .resource       = &glantank_flash_resource,
 137 };
 138
 139 static struct plat_serial8250_port glantank_serial_port[] = {
 140         {
 141                 .mapbase        = GLANTANK_UART,
 142                 .membase        = (char *)GLANTANK_UART,
 143                 .irq            = IRQ_IOP32X_XINT3,
 144                 .flags          = UPF_SKIP_TEST,
 145                 .iotype         = UPIO_MEM,
 146                 .regshift       = 0,
 147                 .uartclk        = 1843200,
 148         },
 149         { },
 150 };
 151
 152 static struct resource glantank_uart_resource = {
 153         .start          = GLANTANK_UART,
 154         .end            = GLANTANK_UART + 7,
 155         .flags          = IORESOURCE_MEM,
 156 };
 157
 158 static struct platform_device glantank_serial_device = {
 159         .name           = "serial8250",
 160         .id             = PLAT8250_DEV_PLATFORM,
 161         .dev            = {
 162                 .platform_data          = glantank_serial_port,
 163         },
 164         .num_resources  = 1,
 165         .resource       = &glantank_uart_resource,
 166 };
 167
 168 static void glantank_power_off(void)
 169 {
 170         __raw_writeb(0x01, 0xfe8d0004);
 171
 172         while (1)
 173                 ;
 174 }
 175
 176 static void __init glantank_init_machine(void)
 177 {
 178         platform_device_register(&iop3xx_i2c0_device);
 179         platform_device_register(&iop3xx_i2c1_device);
 180         platform_device_register(&glantank_flash_device);
 181         platform_device_register(&glantank_serial_device);
 182
 183         pm_power_off = glantank_power_off;
 184 }
 185
 186 MACHINE_START(GLANTANK, "GLAN Tank")
 187         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 188         .phys_io        = GLANTANK_UART,
 189         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
 190         .boot_params    = 0xa0000100,
 191         .map_io         = glantank_map_io,
 192         .init_irq       = iop32x_init_irq,
 193         .timer          = &glantank_timer,
 194         .init_machine   = glantank_init_machine,
 195 MACHINE_END