arch/mips/netlogic/xlp/setup.c

   1 /*
   2  * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
   3  * reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the NetLogic
   9  * license below:
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  *
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  29  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  31  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  32  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <linux/kernel.h>
  36 #include <linux/serial_8250.h>
  37 #include <linux/pm.h>
  38
  39 #include <asm/reboot.h>
  40 #include <asm/time.h>
  41 #include <asm/bootinfo.h>
  42
  43 #include <linux/of_fdt.h>
  44
  45 #include <asm/netlogic/haldefs.h>
  46 #include <asm/netlogic/common.h>
  47
  48 #include <asm/netlogic/xlp-hal/iomap.h>
  49 #include <asm/netlogic/xlp-hal/xlp.h>
  50 #include <asm/netlogic/xlp-hal/sys.h>
  51
  52 unsigned long nlm_common_ebase = 0x0;
  53
  54 /* default to uniprocessor */
  55 uint32_t nlm_coremask = 1, nlm_cpumask  = 1;
  56 int  nlm_threads_per_core = 1;
  57
  58 static void nlm_linux_exit(void)
  59 {
  60         nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 1);
  61         for ( ; ; )
  62                 cpu_wait();
  63 }
  64
  65 void __init plat_mem_setup(void)
  66 {
  67         panic_timeout   = 5;
  68         _machine_restart = (void (*)(char *))nlm_linux_exit;
  69         _machine_halt   = nlm_linux_exit;
  70         pm_power_off    = nlm_linux_exit;
  71 }
  72
  73 const char *get_system_type(void)
  74 {
  75         return "Netlogic XLP Series";
  76 }
  77
  78 void __init prom_free_prom_memory(void)
  79 {
  80         /* Nothing yet */
  81 }
  82
  83 void xlp_mmu_init(void)
  84 {
  85         write_c0_config6(read_c0_config6() | 0x24);
  86         current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
  87         write_c0_config7(PM_DEFAULT_MASK >>
  88                 (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
  89 }
  90
  91 void __init prom_init(void)
  92 {
  93         void *fdtp;
  94
  95         fdtp = (void *)(long)fw_arg0;
  96         xlp_mmu_init();
  97         nlm_hal_init();
  98         early_init_devtree(fdtp);
  99
 100         nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
 101 #ifdef CONFIG_SMP
 102         nlm_wakeup_secondary_cpus(0xffffffff);
 103         register_smp_ops(&nlm_smp_ops);
 104 #endif
 105 }