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 #include <asm/arch/time.h>
  35
  36 /*
  37  * GLAN Tank timer tick configuration.
  38  */
  39 static void __init glantank_timer_init(void)
  40 {
  41         /* 33.333 MHz crystal.  */
  42         iop_init_time(200000000);
  43 }
  44
  45 static struct sys_timer glantank_timer = {
  46         .init           = glantank_timer_init,
  47         .offset         = iop_gettimeoffset,
  48 };
  49
  50
  51 /*
  52  * GLAN Tank I/O.
  53  */
  54 static struct map_desc glantank_io_desc[] __initdata = {
  55         {       /* on-board devices */
  56                 .virtual        = GLANTANK_UART,
  57                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  58                 .length         = 0x00100000,
  59                 .type           = MT_DEVICE
  60         },
  61 };
  62
  63 void __init glantank_map_io(void)
  64 {
  65         iop3xx_map_io();
  66         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  67 }
  68
  69
  70 /*
  71  * GLAN Tank PCI.
  72  */
  73 #define INTA    IRQ_IOP32X_XINT0
  74 #define INTB    IRQ_IOP32X_XINT1
  75 #define INTC    IRQ_IOP32X_XINT2
  76 #define INTD    IRQ_IOP32X_XINT3
  77
  78 static inline int __init
  79 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  80 {
  81         static int pci_irq_table[][4] = {
  82                 /*
  83                  * PCI IDSEL/INTPIN->INTLINE
  84                  * A       B       C       D
  85                  */
  86                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  87                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  88                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  89                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  90         };
  91
  92         BUG_ON(pin < 1 || pin > 4);
  93
  94         return pci_irq_table[slot % 4][pin - 1];
  95 }
  96
  97 static struct hw_pci glantank_pci __initdata = {
  98         .swizzle        = pci_std_swizzle,
  99         .nr_controllers = 1,
 100         .setup          = iop3xx_pci_setup,
 101         .preinit        = iop3xx_pci_preinit,
 102         .scan           = iop3xx_pci_scan_bus,
 103         .map_irq        = glantank_pci_map_irq,
 104 };
 105
 106 static int __init glantank_pci_init(void)
 107 {
 108         if (machine_is_glantank())
 109                 pci_common_init(&glantank_pci);
 110
 111         return 0;
 112 }
 113
 114 subsys_initcall(glantank_pci_init);
 115
 116
 117 /*
 118  * GLAN Tank machine initialization.
 119  */
 120 static struct physmap_flash_data glantank_flash_data = {
 121         .width          = 1,
 122 };
 123
 124 static struct resource glantank_flash_resource = {
 125         .start          = 0xf0000000,
 126         .end            = 0xf007ffff,
 127         .flags          = IORESOURCE_MEM,
 128 };
 129
 130 static struct platform_device glantank_flash_device = {
 131         .name           = "physmap-flash",
 132         .id             = 0,
 133         .dev            = {
 134                 .platform_data  = &glantank_flash_data,
 135         },
 136         .num_resources  = 1,
 137         .resource       = &glantank_flash_resource,
 138 };
 139
 140 static struct plat_serial8250_port glantank_serial_port[] = {
 141         {
 142                 .mapbase        = GLANTANK_UART,
 143                 .membase        = (char *)GLANTANK_UART,
 144                 .irq            = IRQ_IOP32X_XINT3,
 145                 .flags          = UPF_SKIP_TEST,
 146                 .iotype         = UPIO_MEM,
 147                 .regshift       = 0,
 148                 .uartclk        = 1843200,
 149         },
 150         { },
 151 };
 152
 153 static struct resource glantank_uart_resource = {
 154         .start          = GLANTANK_UART,
 155         .end            = GLANTANK_UART + 7,
 156         .flags          = IORESOURCE_MEM,
 157 };
 158
 159 static struct platform_device glantank_serial_device = {
 160         .name           = "serial8250",
 161         .id             = PLAT8250_DEV_PLATFORM,
 162         .dev            = {
 163                 .platform_data          = glantank_serial_port,
 164         },
 165         .num_resources  = 1,
 166         .resource       = &glantank_uart_resource,
 167 };
 168
 169 static void glantank_power_off(void)
 170 {
 171         __raw_writeb(0x01, 0xfe8d0004);
 172
 173         while (1)
 174                 ;
 175 }
 176
 177 static void __init glantank_init_machine(void)
 178 {
 179         platform_device_register(&iop3xx_i2c0_device);
 180         platform_device_register(&iop3xx_i2c1_device);
 181         platform_device_register(&glantank_flash_device);
 182         platform_device_register(&glantank_serial_device);
 183
 184         pm_power_off = glantank_power_off;
 185 }
 186
 187 MACHINE_START(GLANTANK, "GLAN Tank")
 188         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 189         .phys_io        = GLANTANK_UART,
 190         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
 191         .boot_params    = 0xa0000100,
 192         .map_io         = glantank_map_io,
 193         .init_irq       = iop32x_init_irq,
 194         .timer          = &glantank_timer,
 195         .init_machine   = glantank_init_machine,
 196 MACHINE_END