arch/arm/mach-pxa/idp.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/idp.c
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License version 2 as
   6  *  published by the Free Software Foundation.
   7  *
   8  *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
   9  *
  10  *  2001-09-13: Cliff Brake <cbrake@accelent.com>
  11  *              Initial code
  12  *
  13  * Expected command line: mem=32M initrd=0xa1000000,4M root=/dev/ram ramdisk=8192
  14  */
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/major.h>
  18 #include <linux/fs.h>
  19 #include <linux/interrupt.h>
  20
  21 #include <asm/setup.h>
  22 #include <asm/memory.h>
  23 #include <asm/mach-types.h>
  24 #include <asm/hardware.h>
  25 #include <asm/irq.h>
  26
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <asm/arch/pxa-regs.h>
  31 #include <asm/arch/idp.h>
  32
  33 #include "generic.h"
  34
  35 #ifndef PXA_IDP_REV02
  36 /* shadow registers for write only registers */
  37 unsigned int idp_cpld_led_control_shadow = 0x1;
  38 unsigned int idp_cpld_periph_pwr_shadow = 0xd;
  39 unsigned int ipd_cpld_cir_shadow = 0;
  40 unsigned int idp_cpld_kb_col_high_shadow = 0;
  41 unsigned int idp_cpld_kb_col_low_shadow = 0;
  42 unsigned int idp_cpld_pccard_en_shadow = 0xC3;
  43 unsigned int idp_cpld_gpioh_dir_shadow = 0;
  44 unsigned int idp_cpld_gpioh_value_shadow = 0;
  45 unsigned int idp_cpld_gpiol_dir_shadow = 0;
  46 unsigned int idp_cpld_gpiol_value_shadow = 0;
  47
  48 /*
  49  * enable all LCD signals -- they should still be on
  50  * write protect flash
  51  * enable all serial port transceivers
  52  */
  53
  54 unsigned int idp_control_port_shadow = ((0x7 << 21) |           /* LCD power */
  55                                         (0x1 << 19) |           /* disable flash write enable */
  56                                         (0x7 << 9));            /* enable serial port transeivers */
  57
  58 #endif
  59
  60 static void __init idp_init(void)
  61 {
  62         printk("idp_init()\n");
  63 }
  64
  65 static void __init idp_init_irq(void)
  66 {
  67         pxa_init_irq();
  68 }
  69
  70 static struct map_desc idp_io_desc[] __initdata = {
  71  /* virtual     physical    length      type */
  72
  73
  74 #ifndef PXA_IDP_REV02
  75   { IDP_CTRL_PORT_BASE,
  76     IDP_CTRL_PORT_PHYS,
  77     IDP_CTRL_PORT_SIZE,
  78     MT_DEVICE },
  79 #endif
  80
  81   { IDP_IDE_BASE,
  82     IDP_IDE_PHYS,
  83     IDP_IDE_SIZE,
  84     MT_DEVICE },
  85   { IDP_ETH_BASE,
  86     IDP_ETH_PHYS,
  87     IDP_ETH_SIZE,
  88     MT_DEVICE },
  89   { IDP_COREVOLT_BASE,
  90     IDP_COREVOLT_PHYS,
  91     IDP_COREVOLT_SIZE,
  92     MT_DEVICE },
  93   { IDP_CPLD_BASE,
  94     IDP_CPLD_PHYS,
  95     IDP_CPLD_SIZE,
  96     MT_DEVICE }
  97 };
  98
  99 static void __init idp_map_io(void)
 100 {
 101         pxa_map_io();
 102         iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 103
 104         set_irq_type(TOUCH_PANEL_IRQ, TOUCH_PANEL_IRQ_EDGE);
 105
 106         // serial ports 2 & 3
 107         pxa_gpio_mode(GPIO42_BTRXD_MD);
 108         pxa_gpio_mode(GPIO43_BTTXD_MD);
 109         pxa_gpio_mode(GPIO44_BTCTS_MD);
 110         pxa_gpio_mode(GPIO45_BTRTS_MD);
 111         pxa_gpio_mode(GPIO46_STRXD_MD);
 112         pxa_gpio_mode(GPIO47_STTXD_MD);
 113
 114 }
 115
 116
 117 MACHINE_START(PXA_IDP, "Accelent Xscale IDP")
 118         MAINTAINER("Accelent Systems Inc.")
 119         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 120         MAPIO(idp_map_io)
 121         INITIRQ(idp_init_irq)
 122         INITTIME(pxa_init_time)
 123         INIT_MACHINE(idp_init)
 124 MACHINE_END