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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *
   4 *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
   5 *  Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
   6 *  Copyright (C) 2013 John Crispin <john@phrozen.org>
   7 */
   8
   9#include <linux/string.h>
  10#include <linux/of_fdt.h>
  11#include <linux/of_platform.h>
  12
  13#include <asm/bootinfo.h>
  14#include <asm/addrspace.h>
  15
  16#include <asm/mach-ralink/ralink_regs.h>
  17
  18#include "common.h"
  19
  20struct ralink_soc_info soc_info;
  21struct rt2880_pmx_group *rt2880_pinmux_data = NULL;
  22
  23enum ralink_soc_type ralink_soc;
  24EXPORT_SYMBOL_GPL(ralink_soc);
  25
  26const char *get_system_type(void)
  27{
  28        return soc_info.sys_type;
  29}
  30
  31static __init void prom_init_cmdline(void)
  32{
  33        int argc;
  34        char **argv;
  35        int i;
  36
  37        pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
  38               (unsigned int)fw_arg0, (unsigned int)fw_arg1,
  39               (unsigned int)fw_arg2, (unsigned int)fw_arg3);
  40
  41        argc = fw_arg0;
  42        argv = (char **) KSEG1ADDR(fw_arg1);
  43
  44        if (!argv) {
  45                pr_debug("argv=%p is invalid, skipping\n",
  46                       argv);
  47                return;
  48        }
  49
  50        for (i = 0; i < argc; i++) {
  51                char *p = (char *) KSEG1ADDR(argv[i]);
  52
  53                if (CPHYSADDR(p) && *p) {
  54                        pr_debug("argv[%d]: %s\n", i, p);
  55                        strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
  56                        strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
  57                }
  58        }
  59}
  60
  61void __init prom_init(void)
  62{
  63        prom_soc_init(&soc_info);
  64
  65        pr_info("SoC Type: %s\n", get_system_type());
  66
  67        prom_init_cmdline();
  68}
  69
  70void __init prom_free_prom_memory(void)
  71{
  72}
  73