LXR linux/arch/mips/ralink/prom.c

   1/*
   2 *  This program is free software; you can redistribute it and/or modify it
   3 *  under the terms of the GNU General Public License version 2 as published
   4 *  by the Free Software Foundation.
   5 *
   6 *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
   7 *  Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
   8 *  Copyright (C) 2013 John Crispin <john@phrozen.org>
   9 */
  10
  11#include <linux/string.h>
  12#include <linux/of_fdt.h>
  13#include <linux/of_platform.h>
  14
  15#include <asm/bootinfo.h>
  16#include <asm/addrspace.h>
  17
  18#include <asm/mach-ralink/ralink_regs.h>
  19
  20#include "common.h"
  21
  22struct ralink_soc_info soc_info;
  23struct rt2880_pmx_group *rt2880_pinmux_data = NULL;
  24
  25enum ralink_soc_type ralink_soc;
  26EXPORT_SYMBOL_GPL(ralink_soc);
  27
  28const char *get_system_type(void)
  29{
  30        return soc_info.sys_type;
  31}
  32
  33static __init void prom_init_cmdline(void)
  34{
  35        int argc;
  36        char **argv;
  37        int i;
  38
  39        pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
  40               (unsigned int)fw_arg0, (unsigned int)fw_arg1,
  41               (unsigned int)fw_arg2, (unsigned int)fw_arg3);
  42
  43        argc = fw_arg0;
  44        argv = (char **) KSEG1ADDR(fw_arg1);
  45
  46        if (!argv) {
  47                pr_debug("argv=%p is invalid, skipping\n",
  48                       argv);
  49                return;
  50        }
  51
  52        for (i = 0; i < argc; i++) {
  53                char *p = (char *) KSEG1ADDR(argv[i]);
  54
  55                if (CPHYSADDR(p) && *p) {
  56                        pr_debug("argv[%d]: %s\n", i, p);
  57                        strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
  58                        strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
  59                }
  60        }
  61}
  62
  63void __init prom_init(void)
  64{
  65        prom_soc_init(&soc_info);
  66
  67        pr_info("SoC Type: %s\n", get_system_type());
  68
  69        prom_init_cmdline();
  70}
  71
  72void __init prom_free_prom_memory(void)
  73{
  74}
  75