text: /*
   * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
   * reserved.
   *
   * This software is available to you under a choice of one of two
   * licenses.  You may choose to be licensed under the terms of the GNU
   * General Public License (GPL) Version 2, available from the file
   * COPYING in the main directory of this source tree, or the NetLogic
   * license below:
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/threads.h>
  
  #include <asm/asm.h>
  #include <asm/asm-offsets.h>
  #include <asm/mipsregs.h>
  #include <asm/addrspace.h>
  #include <asm/string.h>
  
  #include <asm/netlogic/haldefs.h>
  #include <asm/netlogic/common.h>
  #include <asm/netlogic/mips-extns.h>
  
  #include <asm/netlogic/xlp-hal/iomap.h>
  #include <asm/netlogic/xlp-hal/pic.h>
  #include <asm/netlogic/xlp-hal/xlp.h>
  #include <asm/netlogic/xlp-hal/sys.h>
  
  static void xlp_enable_secondary_cores(void)
  {
  	uint32_t core, value, coremask, syscoremask;
  	int count;
  
  	/* read cores in reset from SYS block */
  	syscoremask = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
  
  	/* update user specified */
  	nlm_coremask = nlm_coremask & (syscoremask | 1);
  
  	for (core = 1; core < 8; core++) {
  		coremask = 1 << core;
  		if ((nlm_coremask & coremask) == 0)
  			continue;
  
  		/* Enable CPU clock */
  		value = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL);
  		value &= ~coremask;
  		nlm_write_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL, value);
  
  		/* Remove CPU Reset */
  		value = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
  		value &= ~coremask;
  		nlm_write_sys_reg(nlm_sys_base, SYS_CPU_RESET, value);
  
  		/* Poll for CPU to mark itself coherent */
  		count = 100000;
  		do {
  			value = nlm_read_sys_reg(nlm_sys_base,
  			    SYS_CPU_NONCOHERENT_MODE);
  		} while ((value & coremask) != 0 && count-- > 0);
  
  		if (count == 0)
  			pr_err("Failed to enable core %d\n", core);
  	}
  }
  
  void xlp_wakeup_secondary_cpus(void)
  {
  	/*
  	 * In case of u-boot, the secondaries are in reset
  	 * first wakeup core 0 threads
  	 */
  	xlp_boot_core0_siblings();
  
  	/* now get other cores out of reset */
  	xlp_enable_secondary_cores();
  }
  