target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/setup.c

   1 /*
   2  *  ADM5120 specific setup
   3  *
   4  *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  *  This code was based on the ADM5120 specific port of the Linux 2.6.10 kernel
   7  *  done by Jeroen Vreeken
   8  *      Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   9  *
  10  *  Jeroen's code was based on the Linux 2.4.xx source codes found in various
  11  *  tarballs released by Edimax for it's ADM5120 based devices
  12  *      Copyright (C) ADMtek Incorporated
  13  *
  14  *  This program is free software; you can redistribute it and/or modify it
  15  *  under the terms of the GNU General Public License version 2 as published
  16  *  by the Free Software Foundation.
  17  *
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/io.h>
  23
  24 #include <asm/reboot.h>
  25 #include <asm/time.h>
  26
  27 #include <asm/mach-adm5120/adm5120_info.h>
  28 #include <asm/mach-adm5120/adm5120_defs.h>
  29 #include <asm/mach-adm5120/adm5120_switch.h>
  30 #include <asm/mach-adm5120/adm5120_board.h>
  31
  32 void (*adm5120_board_reset)(void);
  33
  34 static char *prom_names[ADM5120_PROM_LAST+1] __initdata = {
  35         [ADM5120_PROM_GENERIC]          = "Generic",
  36         [ADM5120_PROM_CFE]              = "CFE",
  37         [ADM5120_PROM_UBOOT]            = "U-Boot",
  38         [ADM5120_PROM_MYLOADER]         = "MyLoader",
  39         [ADM5120_PROM_ROUTERBOOT]       = "RouterBOOT",
  40         [ADM5120_PROM_BOOTBASE]         = "Bootbase"
  41 };
  42
  43 static void __init adm5120_report(void)
  44 {
  45         printk(KERN_INFO "SoC      : ADM%04X%s revision %d, running "
  46                 "at %ldMHz\n",
  47                 adm5120_product_code,
  48                 adm5120_package_bga() ? "" : "P",
  49                 adm5120_revision, (adm5120_speed / 1000000));
  50         printk(KERN_INFO "Bootdev  : %s flash\n",
  51                 adm5120_nand_boot ? "NAND":"NOR");
  52         printk(KERN_INFO "Prom     : %s\n", prom_names[adm5120_prom_type]);
  53 }
  54
  55 static void adm5120_restart(char *command)
  56 {
  57         /* TODO: stop switch before reset */
  58
  59         if (adm5120_board_reset)
  60                 adm5120_board_reset();
  61
  62         SW_WRITE_REG(SWITCH_REG_SOFT_RESET, 1);
  63 }
  64
  65 static void adm5120_halt(void)
  66 {
  67         local_irq_disable();
  68
  69         while (1) {
  70                 if (cpu_wait)
  71                         cpu_wait();
  72         }
  73 }
  74
  75 void __init plat_time_init(void)
  76 {
  77         mips_hpt_frequency = adm5120_speed / 2;
  78 }
  79
  80 void __init plat_mem_setup(void)
  81 {
  82         adm5120_soc_init();
  83         adm5120_mem_init();
  84         adm5120_report();
  85
  86         _machine_restart = adm5120_restart;
  87         _machine_halt = adm5120_halt;
  88         pm_power_off = adm5120_halt;
  89
  90         set_io_port_base(KSEG1);
  91 }