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kernel/linux-rt-4.4.41/arch/mips/xilfpga/init.c 1.15 KB
5113f6f70   김현기   kernel add
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  /*
   * Xilfpga platform setup
   *
   * Copyright (C) 2015 Imagination Technologies
   * Author: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   */
  
  #include <linux/of_fdt.h>
  #include <linux/of_platform.h>
  
  #include <asm/prom.h>
  
  #define XILFPGA_UART_BASE	0xb0401000
  
  const char *get_system_type(void)
  {
  	return "MIPSfpga";
  }
  
  void __init plat_mem_setup(void)
  {
  	__dt_setup_arch(__dtb_start);
  	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
  }
  
  void __init prom_init(void)
  {
  	setup_8250_early_printk_port(XILFPGA_UART_BASE, 2, 50000);
  }
  
  void __init prom_free_prom_memory(void)
  {
  }
  
  void __init device_tree_init(void)
  {
  	if (!initial_boot_params)
  		return;
  
  	unflatten_and_copy_device_tree();
  }
  
  static int __init plat_of_setup(void)
  {
  	if (!of_have_populated_dt())
  		panic("Device tree not present");
  
  	if (of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL))
  		panic("Failed to populate DT");
  
  	return 0;
  }
  arch_initcall(plat_of_setup);