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kernel/linux-rt-4.4.41/arch/powerpc/platforms/85xx/socrates.c 2.3 KB
5113f6f70   김현기   kernel add
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  /*
   * Copyright (c) 2008 Emcraft Systems
   * Sergei Poselenov <sposelenov@emcraft.com>
   *
   * Based on MPC8560 ADS and arch/ppc tqm85xx ports
   *
   * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   *
   * Copyright 2008 Freescale Semiconductor Inc.
   *
   * Copyright (c) 2005-2006 DENX Software Engineering
   * Stefan Roese <sr@denx.de>
   *
   * Based on original work by
   * 	Kumar Gala <kumar.gala@freescale.com>
   *      Copyright 2004 Freescale Semiconductor Inc.
   *
   * This program is free software; you can redistribute  it and/or modify it
   * under  the terms of  the GNU General  Public License as published by the
   * Free Software Foundation;  either version 2 of the  License, or (at your
   * option) any later version.
   */
  
  #include <linux/stddef.h>
  #include <linux/kernel.h>
  #include <linux/pci.h>
  #include <linux/kdev_t.h>
  #include <linux/delay.h>
  #include <linux/seq_file.h>
  #include <linux/of_platform.h>
  
  #include <asm/time.h>
  #include <asm/machdep.h>
  #include <asm/pci-bridge.h>
  #include <asm/mpic.h>
  #include <asm/prom.h>
  #include <mm/mmu_decl.h>
  #include <asm/udbg.h>
  
  #include <sysdev/fsl_soc.h>
  #include <sysdev/fsl_pci.h>
  
  #include "mpc85xx.h"
  #include "socrates_fpga_pic.h"
  
  static void __init socrates_pic_init(void)
  {
  	struct device_node *np;
  
  	struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
  			0, 256, " OpenPIC  ");
  	BUG_ON(mpic == NULL);
  	mpic_init(mpic);
  
  	np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
  	if (!np) {
  		printk(KERN_ERR "Could not find socrates-fpga-pic node
  ");
  		return;
  	}
  	socrates_fpga_pic_init(np);
  	of_node_put(np);
  }
  
  /*
   * Setup the architecture
   */
  static void __init socrates_setup_arch(void)
  {
  	if (ppc_md.progress)
  		ppc_md.progress("socrates_setup_arch()", 0);
  
  	fsl_pci_assign_primary();
  }
  
  machine_arch_initcall(socrates, mpc85xx_common_publish_devices);
  
  /*
   * Called very early, device-tree isn't unflattened
   */
  static int __init socrates_probe(void)
  {
  	unsigned long root = of_get_flat_dt_root();
  
  	if (of_flat_dt_is_compatible(root, "abb,socrates"))
  		return 1;
  
  	return 0;
  }
  
  define_machine(socrates) {
  	.name			= "Socrates",
  	.probe			= socrates_probe,
  	.setup_arch		= socrates_setup_arch,
  	.init_IRQ		= socrates_pic_init,
  	.get_irq		= mpic_get_irq,
  	.restart		= fsl_rstcr_restart,
  	.calibrate_decr		= generic_calibrate_decr,
  	.progress		= udbg_progress,
  };