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] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
  41 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  42         [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
  43 #endif
  44 };
  45
  46
  47 static struct platform_device smc91x_device = {
  48         .name           = "smc91x",
  49         .id             = 0,
  50         .num_resources  = ARRAY_SIZE(smc91x_resources),
  51         .resource       = smc91x_resources,
  52 };
  53
  54 static struct platform_device *devices[] __initdata = {
  55         &smc91x_device,
  56 };
  57
  58
  59 /*
  60  * Pleb's memory map
  61  * has flash memory (typically 4 or 8 meg) selected by
  62  * the two SA1100 lowest chip select outputs.
  63  */
  64 static struct resource pleb_flash_resources[] = {
  65         [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
  66         [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
  67 };
  68
  69
  70 static struct mtd_partition pleb_partitions[] = {
  71         {
  72                 .name           = "blob",
  73                 .offset         = 0,
  74                 .size           = 0x00020000,
  75         }, {
  76                 .name           = "kernel",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = 0x000e0000,
  79         }, {
  80                 .name           = "rootfs",
  81                 .offset         = MTDPART_OFS_APPEND,
  82                 .size           = 0x00300000,
  83         }
  84 };
  85
  86
  87 static struct flash_platform_data pleb_flash_data = {
  88         .map_name = "cfi_probe",
  89         .parts = pleb_partitions,
  90         .nr_parts = ARRAY_SIZE(pleb_partitions),
  91 };
  92
  93
  94 static void __init pleb_init(void)
  95 {
  96         sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
  97                               ARRAY_SIZE(pleb_flash_resources));
  98
  99
 100         platform_add_devices(devices, ARRAY_SIZE(devices));
 101 }
 102
 103
 104 static void __init pleb_map_io(void)
 105 {
 106         sa1100_map_io();
 107
 108         sa1100_register_uart(0, 3);
 109         sa1100_register_uart(1, 1);
 110
 111         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 112         GPDR |= GPIO_UART_TXD;
 113         GPDR &= ~GPIO_UART_RXD;
 114         PPAR |= PPAR_UPR;
 115
 116         /*
 117          * Fix expansion memory timing for network card
 118          */
 119         MECR = ((2<<10) | (2<<5) | (2<<0));
 120
 121         /*
 122          * Enable the SMC ethernet controller
 123          */
 124         GPDR |= GPIO_ETH0_EN;   /* set to output */
 125         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 126
 127         GPDR &= ~GPIO_ETH0_IRQ;
 128
 129         irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
 130 }
 131
 132 MACHINE_START(PLEB, "PLEB")
 133         .map_io         = pleb_map_io,
 134         .nr_irqs        = SA1100_NR_IRQS,
 135         .init_irq       = sa1100_init_irq,
 136         .timer          = &sa1100_timer,
 137         .init_machine   = pleb_init,
 138         .init_late      = sa11x0_init_late,
 139         .restart        = sa11x0_restart,
 140 MACHINE_END