arch/arm/mach-sa1100/collie.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/collie.c
   3  *
   4  * May be copied or modified under the terms of the GNU General Public
   5  * License.  See linux/COPYING for more information.
   6  *
   7  * This file contains all Collie-specific tweaks.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * ChangeLog:
  14  *  03-06-2004 John Lenz <jelenz@wisc.edu>
  15  *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
  16  *  04-16-2001 Lineo Japan,Inc. ...
  17  */
  18
  19 #include <linux/config.h>
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/tty.h>
  23 #include <linux/delay.h>
  24 #include <linux/device.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/timer.h>
  28
  29 #include <asm/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/irq.h>
  32 #include <asm/setup.h>
  33 #include <asm/arch/collie.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/flash.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/serial_sa1100.h>
  39
  40 #include <asm/hardware/scoop.h>
  41 #include <asm/mach/sharpsl_param.h>
  42 #include <asm/hardware/locomo.h>
  43
  44 #include "generic.h"
  45
  46 static struct resource collie_scoop_resources[] = {
  47         [0] = {
  48                 .start          = 0x40800000,
  49                 .end            = 0x40800fff,
  50                 .flags          = IORESOURCE_MEM,
  51         },
  52 };
  53
  54 static struct scoop_config collie_scoop_setup = {
  55         .io_dir         = COLLIE_SCOOP_IO_DIR,
  56         .io_out         = COLLIE_SCOOP_IO_OUT,
  57 };
  58
  59 struct platform_device colliescoop_device = {
  60         .name           = "sharp-scoop",
  61         .id             = -1,
  62         .dev            = {
  63                 .platform_data  = &collie_scoop_setup,
  64         },
  65         .num_resources  = ARRAY_SIZE(collie_scoop_resources),
  66         .resource       = collie_scoop_resources,
  67 };
  68
  69
  70 static struct resource locomo_resources[] = {
  71         [0] = {
  72                 .start          = 0x40000000,
  73                 .end            = 0x40001fff,
  74                 .flags          = IORESOURCE_MEM,
  75         },
  76         [1] = {
  77                 .start          = IRQ_GPIO25,
  78                 .end            = IRQ_GPIO25,
  79                 .flags          = IORESOURCE_IRQ,
  80         },
  81 };
  82
  83 static struct platform_device locomo_device = {
  84         .name           = "locomo",
  85         .id             = 0,
  86         .num_resources  = ARRAY_SIZE(locomo_resources),
  87         .resource       = locomo_resources,
  88 };
  89
  90 static struct platform_device *devices[] __initdata = {
  91         &locomo_device,
  92         &colliescoop_device,
  93 };
  94
  95 static struct mtd_partition collie_partitions[] = {
  96         {
  97                 .name           = "bootloader",
  98                 .offset         = 0,
  99                 .size           = 0x000C0000,
 100                 .mask_flags     = MTD_WRITEABLE
 101         }, {
 102                 .name           = "kernel",
 103                 .offset         = MTDPART_OFS_APPEND,
 104                 .size           = 0x00100000,
 105         }, {
 106                 .name           = "rootfs",
 107                 .offset         = MTDPART_OFS_APPEND,
 108                 .size           = 0x00e20000,
 109         }
 110 };
 111
 112 static void collie_set_vpp(int vpp)
 113 {
 114         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 115         if (vpp)
 116                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 117         else
 118                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 119 }
 120
 121 static struct flash_platform_data collie_flash_data = {
 122         .map_name       = "cfi_probe",
 123         .set_vpp        = collie_set_vpp,
 124         .parts          = collie_partitions,
 125         .nr_parts       = ARRAY_SIZE(collie_partitions),
 126 };
 127
 128 static struct resource collie_flash_resources[] = {
 129         {
 130                 .start  = SA1100_CS0_PHYS,
 131                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 132                 .flags  = IORESOURCE_MEM,
 133         }
 134 };
 135
 136 static void __init collie_init(void)
 137 {
 138         int ret = 0;
 139
 140         /* cpu initialize */
 141         GAFR = ( GPIO_SSP_TXD | \
 142                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
 143                  GPIO_32_768kHz );
 144
 145         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
 146                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
 147                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
 148                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
 149         GPLR = GPIO_GPIO18;
 150
 151         // PPC pin setting
 152         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
 153                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
 154                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
 155
 156         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
 157
 158         GAFR |= GPIO_32_768kHz;
 159         GPDR |= GPIO_32_768kHz;
 160         TUCR  = TUCR_32_768kHz;
 161
 162         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 163         if (ret) {
 164                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 165         }
 166
 167         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 168                               ARRAY_SIZE(collie_flash_resources));
 169
 170         sharpsl_save_param();
 171 }
 172
 173 static struct map_desc collie_io_desc[] __initdata = {
 174         /* virtual     physical    length      type */
 175         {0xe8000000, 0x00000000, 0x02000000, MT_DEVICE},        /* 32M main flash (cs0) */
 176         {0xea000000, 0x08000000, 0x02000000, MT_DEVICE},        /* 32M boot flash (cs1) */
 177 };
 178
 179 static void __init collie_map_io(void)
 180 {
 181         sa1100_map_io();
 182         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 183 }
 184
 185 MACHINE_START(COLLIE, "Sharp-Collie")
 186         .phys_ram       = 0xc0000000,
 187         .phys_io        = 0x80000000,
 188         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 189         .map_io         = collie_map_io,
 190         .init_irq       = sa1100_init_irq,
 191         .timer          = &sa1100_timer,
 192         .init_machine   = collie_init,
 193 MACHINE_END