arch/arm/mach-sa1100/hackkit.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/hackkit.c
   3  *
   4  * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
   5  *
   6  * This file contains all HackKit tweaks. Based on original work from
   7  * Nicolas Pitre's assabet fixes
   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  */
  14 #include <linux/init.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/tty.h>
  18 #include <linux/module.h>
  19 #include <linux/errno.h>
  20 #include <linux/cpufreq.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/setup.h>
  28 #include <asm/page.h>
  29 #include <asm/pgtable.h>
  30 #include <asm/irq.h>
  31
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/flash.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/irq.h>
  36 #include <asm/mach/serial_sa1100.h>
  37
  38 #include "generic.h"
  39
  40 /**********************************************************************
  41  *  prototypes
  42  */
  43
  44 /* init funcs */
  45 static void __init hackkit_map_io(void);
  46
  47 static u_int hackkit_get_mctrl(struct uart_port *port);
  48 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
  49 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
  50
  51 /**********************************************************************
  52  *  global data
  53  */
  54
  55 /**********************************************************************
  56  *  static data
  57  */
  58
  59 static struct map_desc hackkit_io_desc[] __initdata = {
  60  /* virtual     physical    length      type */
  61   { 0xe8000000, 0x00000000, 0x01000000, MT_DEVICE } /* Flash bank 0 */
  62 };
  63
  64 static struct sa1100_port_fns hackkit_port_fns __initdata = {
  65         .set_mctrl      = hackkit_set_mctrl,
  66         .get_mctrl      = hackkit_get_mctrl,
  67         .pm             = hackkit_uart_pm,
  68 };
  69
  70 /**********************************************************************
  71  *  Static functions
  72  */
  73
  74 static void __init hackkit_map_io(void)
  75 {
  76         sa1100_map_io();
  77         iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
  78
  79         sa1100_register_uart_fns(&hackkit_port_fns);
  80         sa1100_register_uart(0, 1);     /* com port */
  81         sa1100_register_uart(1, 2);
  82         sa1100_register_uart(2, 3);     /* radio module */
  83
  84         Ser1SDCR0 |= SDCR0_SUS;
  85 }
  86
  87 /**
  88  *      hackkit_uart_pm - powermgmt callback function for system 3 UART
  89  *      @port: uart port structure
  90  *      @state: pm state
  91  *      @oldstate: old pm state
  92  *
  93  */
  94 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  95 {
  96         /* TODO: switch on/off uart in powersave mode */
  97 }
  98
  99 /*
 100  * Note! this can be called from IRQ context.
 101  * FIXME: No modem ctrl lines yet.
 102  */
 103 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
 104 {
 105 #if 0
 106         if (port->mapbase == _Ser1UTCR0) {
 107                 u_int set = 0, clear = 0;
 108
 109                 if (mctrl & TIOCM_RTS)
 110                         set |= PT_CTRL2_RS1_RTS;
 111                 else
 112                         clear |= PT_CTRL2_RS1_RTS;
 113
 114                 if (mctrl & TIOCM_DTR)
 115                         set |= PT_CTRL2_RS1_DTR;
 116                 else
 117                         clear |= PT_CTRL2_RS1_DTR;
 118
 119                 PTCTRL2_clear(clear);
 120                 PTCTRL2_set(set);
 121         }
 122 #endif
 123 }
 124
 125 static u_int hackkit_get_mctrl(struct uart_port *port)
 126 {
 127         u_int ret = 0;
 128 #if 0
 129         u_int irqsr = PT_IRQSR;
 130
 131         /* need 2 reads to read current value */
 132         irqsr = PT_IRQSR;
 133
 134         /* TODO: check IRQ source register for modem/com
 135          status lines and set them correctly. */
 136 #endif
 137
 138         ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
 139
 140         return ret;
 141 }
 142
 143 static struct mtd_partition hackkit_partitions[] = {
 144         {
 145                 .name           = "BLOB",
 146                 .size           = 0x00040000,
 147                 .offset         = 0x00000000,
 148                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
 149         }, {
 150                 .name           = "config",
 151                 .size           = 0x00040000,
 152                 .offset         = MTDPART_OFS_APPEND,
 153         }, {
 154                 .name           = "kernel",
 155                 .size           = 0x00100000,
 156                 .offset         = MTDPART_OFS_APPEND,
 157         }, {
 158                 .name           = "initrd",
 159                 .size           = 0x00180000,
 160                 .offset         = MTDPART_OFS_APPEND,
 161         }, {
 162                 .name           = "rootfs",
 163                 .size           = 0x700000,
 164                 .offset         = MTDPART_OFS_APPEND,
 165         }, {
 166                 .name           = "data",
 167                 .size           = MTDPART_SIZ_FULL,
 168                 .offset         = MTDPART_OFS_APPEND,
 169         }
 170 };
 171
 172 static struct flash_platform_data hackkit_flash_data = {
 173         .map_name       = "cfi_probe",
 174         .parts          = hackkit_partitions,
 175         .nr_parts       = ARRAY_SIZE(hackkit_partitions),
 176 };
 177
 178 static struct resource hackkit_flash_resource = {
 179         .start          = SA1100_CS0_PHYS,
 180         .end            = SA1100_CS0_PHYS + SZ_32M,
 181         .flags          = IORESOURCE_MEM,
 182 };
 183
 184 static void __init hackkit_init(void)
 185 {
 186         sa11x0_set_flash_data(&hackkit_flash_data, &hackkit_flash_resource, 1);
 187 }
 188
 189 /**********************************************************************
 190  *  Exported Functions
 191  */
 192
 193 MACHINE_START(HACKKIT, "HackKit Cpu Board")
 194         .phys_ram       = 0xc0000000,
 195         .phys_io        = 0x80000000,
 196         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 197         .boot_params    = 0xc0000100,
 198         .map_io         = hackkit_map_io,
 199         .init_irq       = sa1100_init_irq,
 200         .timer          = &sa1100_timer,
 201         .init_machine   = hackkit_init,
 202 MACHINE_END