target/linux/ramips/patches-3.8/0004-MIPS-ralink-adds-prom-and-cmdline-code.patch

   1 From 7e47cefa69c8ed2c889522ce29fcce73ce8cf08e Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 20 Jan 2013 22:01:05 +0100
   4 Subject: [PATCH 04/14] MIPS: ralink: adds prom and cmdline code
   5
   6 Add minimal code to handle commandlines.
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  10 Patchwork: http://patchwork.linux-mips.org/patch/4892/
  11 ---
  12  arch/mips/ralink/prom.c |   69 +++++++++++++++++++++++++++++++++++++++++++++++
  13  1 file changed, 69 insertions(+)
  14  create mode 100644 arch/mips/ralink/prom.c
  15
  16 diff --git a/arch/mips/ralink/prom.c b/arch/mips/ralink/prom.c
  17 new file mode 100644
  18 index 0000000..9c64f02
  19 --- /dev/null
  20 +++ b/arch/mips/ralink/prom.c
  21 @@ -0,0 +1,69 @@
  22 +/*
  23 + *  This program is free software; you can redistribute it and/or modify it
  24 + *  under the terms of the GNU General Public License version 2 as published
  25 + *  by the Free Software Foundation.
  26 + *
  27 + *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
  28 + *  Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
  29 + *  Copyright (C) 2013 John Crispin <blogic@openwrt.org>
  30 + */
  31 +
  32 +#include <linux/string.h>
  33 +#include <linux/of_fdt.h>
  34 +#include <linux/of_platform.h>
  35 +
  36 +#include <asm/bootinfo.h>
  37 +#include <asm/addrspace.h>
  38 +
  39 +#include "common.h"
  40 +
  41 +struct ralink_soc_info soc_info;
  42 +
  43 +const char *get_system_type(void)
  44 +{
  45 +       return soc_info.sys_type;
  46 +}
  47 +
  48 +static __init void prom_init_cmdline(int argc, char **argv)
  49 +{
  50 +       int i;
  51 +
  52 +       pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
  53 +              (unsigned int)fw_arg0, (unsigned int)fw_arg1,
  54 +              (unsigned int)fw_arg2, (unsigned int)fw_arg3);
  55 +
  56 +       argc = fw_arg0;
  57 +       argv = (char **) KSEG1ADDR(fw_arg1);
  58 +
  59 +       if (!argv) {
  60 +               pr_debug("argv=%p is invalid, skipping\n",
  61 +                      argv);
  62 +               return;
  63 +       }
  64 +
  65 +       for (i = 0; i < argc; i++) {
  66 +               char *p = (char *) KSEG1ADDR(argv[i]);
  67 +
  68 +               if (CPHYSADDR(p) && *p) {
  69 +                       pr_debug("argv[%d]: %s\n", i, p);
  70 +                       strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
  71 +                       strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
  72 +               }
  73 +       }
  74 +}
  75 +
  76 +void __init prom_init(void)
  77 +{
  78 +       int argc;
  79 +       char **argv;
  80 +
  81 +       prom_soc_init(&soc_info);
  82 +
  83 +       pr_info("SoC Type: %s\n", get_system_type());
  84 +
  85 +       prom_init_cmdline(argc, argv);
  86 +}
  87 +
  88 +void __init prom_free_prom_memory(void)
  89 +{
  90 +}
  91 --
  92 1.7.10.4
  93