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/device.h>
  10
  11 #include <linux/mtd/partitions.h>
  12
  13 #include <asm/hardware.h>
  14 #include <asm/io.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 <asm/arch/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 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  46         [1] = {
  47                 .start  = IRQ_GPIO_ETH0_IRQ,
  48                 .end    = IRQ_GPIO_ETH0_IRQ,
  49                 .flags  = IORESOURCE_IRQ,
  50         },
  51 #endif
  52 };
  53
  54
  55 static struct platform_device smc91x_device = {
  56         .name           = "smc91x",
  57         .id             = 0,
  58         .num_resources  = ARRAY_SIZE(smc91x_resources),
  59         .resource       = smc91x_resources,
  60 };
  61
  62 static struct platform_device *devices[] __initdata = {
  63         &smc91x_device,
  64 };
  65
  66
  67 /*
  68  * Pleb's memory map
  69  * has flash memory (typically 4 or 8 meg) selected by
  70  * the two SA1100 lowest chip select outputs.
  71  */
  72 static struct resource pleb_flash_resources[] = {
  73         [0] = {
  74                 .start = SA1100_CS0_PHYS,
  75                 .end   = SA1100_CS0_PHYS + SZ_8M - 1,
  76                 .flags = IORESOURCE_MEM,
  77         },
  78         [1] = {
  79                 .start = SA1100_CS1_PHYS,
  80                 .end   = SA1100_CS1_PHYS + SZ_8M - 1,
  81                 .flags = IORESOURCE_MEM,
  82         }
  83 };
  84
  85
  86 static struct mtd_partition pleb_partitions[] = {
  87         {
  88                 .name           = "blob",
  89                 .offset         = 0,
  90                 .size           = 0x00020000,
  91         }, {
  92                 .name           = "kernel",
  93                 .offset         = MTDPART_OFS_APPEND,
  94                 .size           = 0x000e0000,
  95         }, {
  96                 .name           = "rootfs",
  97                 .offset         = MTDPART_OFS_APPEND,
  98                 .size           = 0x00300000,
  99         }
 100 };
 101
 102
 103 static struct flash_platform_data pleb_flash_data = {
 104         .map_name = "cfi_probe",
 105         .parts = pleb_partitions,
 106         .nr_parts = ARRAY_SIZE(pleb_partitions),
 107 };
 108
 109
 110 static void __init pleb_init(void)
 111 {
 112         sa11x0_set_flash_data(&pleb_flash_data, pleb_flash_resources,
 113                               ARRAY_SIZE(pleb_flash_resources));
 114
 115
 116         platform_add_devices(devices, ARRAY_SIZE(devices));
 117 }
 118
 119
 120 static void __init pleb_map_io(void)
 121 {
 122         sa1100_map_io();
 123
 124         sa1100_register_uart(0, 3);
 125         sa1100_register_uart(1, 1);
 126
 127         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 128         GPDR |= GPIO_UART_TXD;
 129         GPDR &= ~GPIO_UART_RXD;
 130         PPAR |= PPAR_UPR;
 131
 132         /*
 133          * Fix expansion memory timing for network card
 134          */
 135         MECR = ((2<<10) | (2<<5) | (2<<0));
 136
 137         /*
 138          * Enable the SMC ethernet controller
 139          */
 140         GPDR |= GPIO_ETH0_EN;   /* set to output */
 141         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 142
 143         GPDR &= ~GPIO_ETH0_IRQ;
 144
 145         set_irq_type(GPIO_ETH0_IRQ, IRQT_FALLING);
 146 }
 147
 148 MACHINE_START(PLEB, "PLEB")
 149         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
 150         MAPIO(pleb_map_io)
 151         INITIRQ(sa1100_init_irq)
 152         .timer          = &sa1100_timer,
 153         .init_machine   = pleb_init,
 154 MACHINE_END