release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include <linux/io.h>
  12 #include <linux/mtd/partitions.h>
  13
  14 #include <mach/hardware.h>
  15 #include <asm/setup.h>
  16 #include <asm/mach-types.h>
  17
  18 #include <asm/mach/arch.h>
  19 #include <asm/mach/map.h>
  20 #include <asm/mach/flash.h>
  21 #include <asm/mach/serial_sa1100.h>
  22 #include <mach/irqs.h>
  23
  24 #include "generic.h"
  25
  26
  27 /*
  28  * Ethernet IRQ mappings
  29  */
  30
  31 #define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
  32 #define PLEB_ETH0_V             (0xf6000300)
  33
  34 #define GPIO_ETH0_IRQ           GPIO_GPIO(21)
  35 #define GPIO_ETH0_EN            GPIO_GPIO(26)
  36
  37 #define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
  38
  39 static struct resource smc91x_resources[] = {
  40         [0] = {
  41                 .start  = PLEB_ETH0_P,
  42                 .end    = PLEB_ETH0_P | 0x03ffffff,
  43                 .flags  = IORESOURCE_MEM,
  44         },
  45 };
  46
  47
  48 static struct platform_device smc91x_device = {
  49         .name           = "smc91x",
  50         .id             = 0,
  51         .num_resources  = ARRAY_SIZE(smc91x_resources),
  52         .resource       = smc91x_resources,
  53 };
  54
  55 static struct platform_device *devices[] __initdata = {
  56         &smc91x_device,
  57 };
  58
  59
  60 /*
  61  * Pleb's memory map
  62  * has flash memory (typically 4 or 8 meg) selected by
  63  * the two SA1100 lowest chip select outputs.
  64  */
  65 static struct resource pleb_flash_resources[] = {
  66         [0] = {
  67                 .start = SA1100_CS0_PHYS,
  68                 .end   = SA1100_CS0_PHYS + SZ_8M - 1,
  69                 .flags = IORESOURCE_MEM,
  70         },
  71         [1] = {
  72                 .start = SA1100_CS1_PHYS,
  73                 .end   = SA1100_CS1_PHYS + SZ_8M - 1,
  74                 .flags = IORESOURCE_MEM,
  75         }
  76 };
  77
  78
  79 static struct mtd_partition pleb_partitions[] = {
  80         {
  81                 .name           = "blob",
  82                 .offset         = 0,
  83                 .size           = 0x00020000,
  84         }, {
  85                 .name           = "kernel",
  86                 .offset         = MTDPART_OFS_APPEND,
  87                 .size           = 0x000e0000,
  88         }, {
  89                 .name           = "rootfs",
  90                 .offset         = MTDPART_OFS_APPEND,
  91                 .size           = 0x00300000,
  92         }
  93 };
  94
  95
  96 static struct flash_platform_data pleb_flash_data = {
  97         .map_name = "cfi_probe",
  98         .parts = pleb_partitions,
  99         .nr_parts = ARRAY_SIZE(pleb_partitions),
 100 };
 101
 102
 103 static void __init pleb_init(void)
 104 {
 105         sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
 106                               ARRAY_SIZE(pleb_flash_resources));
 107
 108
 109         platform_add_devices(devices, ARRAY_SIZE(devices));
 110 }
 111
 112
 113 static void __init pleb_map_io(void)
 114 {
 115         sa1100_map_io();
 116
 117         sa1100_register_uart(0, 3);
 118         sa1100_register_uart(1, 1);
 119
 120         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 121         GPDR |= GPIO_UART_TXD;
 122         GPDR &= ~GPIO_UART_RXD;
 123         PPAR |= PPAR_UPR;
 124
 125         /*
 126          * Fix expansion memory timing for network card
 127          */
 128         MECR = ((2<<10) | (2<<5) | (2<<0));
 129
 130         /*
 131          * Enable the SMC ethernet controller
 132          */
 133         GPDR |= GPIO_ETH0_EN;   /* set to output */
 134         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 135
 136         GPDR &= ~GPIO_ETH0_IRQ;
 137
 138         set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
 139 }
 140
 141 MACHINE_START(PLEB, "PLEB")
 142         .phys_io        = 0x80000000,
 143         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 144         .map_io         = pleb_map_io,
 145         .init_irq       = sa1100_init_irq,
 146         .timer          = &sa1100_timer,
 147         .init_machine   = pleb_init,
 148 MACHINE_END