LXR linux/arch/mips/xilfpga/init.c

   1/*
   2 * Xilfpga platform setup
   3 *
   4 * Copyright (C) 2015 Imagination Technologies
   5 * Author: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms and conditions of the GNU General Public License,
   9 * version 2, as published by the Free Software Foundation.
  10 */
  11
  12#include <linux/of_fdt.h>
  13#include <linux/of_platform.h>
  14
  15#include <asm/prom.h>
  16
  17#define XILFPGA_UART_BASE       0xb0401000
  18
  19const char *get_system_type(void)
  20{
  21        return "MIPSfpga";
  22}
  23
  24void __init plat_mem_setup(void)
  25{
  26        __dt_setup_arch(__dtb_start);
  27        strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
  28}
  29
  30void __init prom_init(void)
  31{
  32        setup_8250_early_printk_port(XILFPGA_UART_BASE, 2, 50000);
  33}
  34
  35void __init prom_free_prom_memory(void)
  36{
  37}
  38
  39void __init device_tree_init(void)
  40{
  41        if (!initial_boot_params)
  42                return;
  43
  44        unflatten_and_copy_device_tree();
  45}
  46
  47static int __init plat_of_setup(void)
  48{
  49        if (!of_have_populated_dt())
  50                panic("Device tree not present");
  51
  52        if (of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL))
  53                panic("Failed to populate DT");
  54
  55        return 0;
  56}
  57arch_initcall(plat_of_setup);
  58