release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-sa1100/pleb.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/pleb.c
   3  */
   4
   5 #include <linux/init.h>
   6 #include <linux/kernel.h>
   7 #include <linux/tty.h>
   8 #include <linux/ioport.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/irq.h>
  11
  12 #include <linux/mtd/partitions.h>
  13
  14 #include <asm/hardware.h>
  15 #include <asm/io.h>
  16 #include <asm/setup.h>
  17 #include <asm/mach-types.h>
  18
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/map.h>
  21 #include <asm/mach/flash.h>
  22 #include <asm/mach/serial_sa1100.h>
  23 #include <asm/arch/irqs.h>
  24
  25 #include "generic.h"
  26
  27
  28 /*
  29  * Ethernet IRQ mappings
  30  */
  31
  32 #define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
  33 #define PLEB_ETH0_V             (0xf6000300)
  34
  35 #define GPIO_ETH0_IRQ           GPIO_GPIO(21)
  36 #define GPIO_ETH0_EN            GPIO_GPIO(26)
  37
  38 #define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
  39
  40 static struct resource smc91x_resources[] = {
  41         [0] = {
  42                 .start  =  PLEB_ETH0_P,
  43                 .end    =  PLEB_ETH0_P | 0x03ffffff,
  44                 .flags  = IORESOURCE_MEM,
  45         },
  46 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  47         [1] = {
  48                 .start  = IRQ_GPIO_ETH0_IRQ,
  49                 .end    = IRQ_GPIO_ETH0_IRQ,
  50                 .flags  = IORESOURCE_IRQ,
  51         },
  52 #endif
  53 };
  54
  55
  56 static struct platform_device smc91x_device = {
  57         .name           = "smc91x",
  58         .id             = 0,
  59         .num_resources  = ARRAY_SIZE(smc91x_resources),
  60         .resource       = smc91x_resources,
  61 };
  62
  63 static struct platform_device *devices[] __initdata = {
  64         &smc91x_device,
  65 };
  66
  67
  68 /*
  69  * Pleb's memory map
  70  * has flash memory (typically 4 or 8 meg) selected by
  71  * the two SA1100 lowest chip select outputs.
  72  */
  73 static struct resource pleb_flash_resources[] = {
  74         [0] = {
  75                 .start = SA1100_CS0_PHYS,
  76                 .end   = SA1100_CS0_PHYS + SZ_8M - 1,
  77                 .flags = IORESOURCE_MEM,
  78         },
  79         [1] = {
  80                 .start = SA1100_CS1_PHYS,
  81                 .end   = SA1100_CS1_PHYS + SZ_8M - 1,
  82                 .flags = IORESOURCE_MEM,
  83         }
  84 };
  85
  86
  87 static struct mtd_partition pleb_partitions[] = {
  88         {
  89                 .name           = "blob",
  90                 .offset         = 0,
  91                 .size           = 0x00020000,
  92         }, {
  93                 .name           = "kernel",
  94                 .offset         = MTDPART_OFS_APPEND,
  95                 .size           = 0x000e0000,
  96         }, {
  97                 .name           = "rootfs",
  98                 .offset         = MTDPART_OFS_APPEND,
  99                 .size           = 0x00300000,
 100         }
 101 };
 102
 103
 104 static struct flash_platform_data pleb_flash_data = {
 105         .map_name = "cfi_probe",
 106         .parts = pleb_partitions,
 107         .nr_parts = ARRAY_SIZE(pleb_partitions),
 108 };
 109
 110
 111 static void __init pleb_init(void)
 112 {
 113         sa11x0_set_flash_data(&pleb_flash_data, pleb_flash_resources,
 114                               ARRAY_SIZE(pleb_flash_resources));
 115
 116
 117         platform_add_devices(devices, ARRAY_SIZE(devices));
 118 }
 119
 120
 121 static void __init pleb_map_io(void)
 122 {
 123         sa1100_map_io();
 124
 125         sa1100_register_uart(0, 3);
 126         sa1100_register_uart(1, 1);
 127
 128         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 129         GPDR |= GPIO_UART_TXD;
 130         GPDR &= ~GPIO_UART_RXD;
 131         PPAR |= PPAR_UPR;
 132
 133         /*
 134          * Fix expansion memory timing for network card
 135          */
 136         MECR = ((2<<10) | (2<<5) | (2<<0));
 137
 138         /*
 139          * Enable the SMC ethernet controller
 140          */
 141         GPDR |= GPIO_ETH0_EN;   /* set to output */
 142         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 143
 144         GPDR &= ~GPIO_ETH0_IRQ;
 145
 146         set_irq_type(GPIO_ETH0_IRQ, IRQT_FALLING);
 147 }
 148
 149 MACHINE_START(PLEB, "PLEB")
 150         .phys_io        = 0x80000000,
 151         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 152         .map_io         = pleb_map_io,
 153         .init_irq       = sa1100_init_irq,
 154         .timer          = &sa1100_timer,
 155         .init_machine   = pleb_init,
 156 MACHINE_END