target/linux/ramips/patches-3.8/0200-MIPS-read-the-mips_machine-name-from-OF-and-output-i.patch

   1 From 0184f7b64c68fe9606559e86bdd288de01c87a85 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 17 Mar 2013 10:30:48 +0100
   4 Subject: [PATCH 200/208] MIPS: read the mips_machine name from OF and output
   5  it in /proc/cpuinfo
   6
   7 This allows the userland to be compatible to the devive probing of mips_machine.
   8
   9 Signed-off-by: John Crispin <blogic@openwrt.org>
  10 ---
  11  arch/mips/include/asm/prom.h |    3 +++
  12  arch/mips/kernel/proc.c      |    6 +++++-
  13  arch/mips/kernel/prom.c      |   24 ++++++++++++++++++++++++
  14  3 files changed, 32 insertions(+), 1 deletion(-)
  15
  16 diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h
  17 index 8808bf5..a4ad354 100644
  18 --- a/arch/mips/include/asm/prom.h
  19 +++ b/arch/mips/include/asm/prom.h
  20 @@ -44,8 +44,11 @@ extern void __dt_setup_arch(struct boot_param_header *bph);
  21         __dt_setup_arch(&__dtb_##sym##_begin);                          \
  22  })
  23
  24 +extern char *of_mips_get_machine_name(void);
  25 +
  26  #else /* CONFIG_OF */
  27  static inline void device_tree_init(void) { }
  28 +static char *of_mips_get_machine_name(void) { return NULL; }
  29  #endif /* CONFIG_OF */
  30
  31  #endif /* __ASM_PROM_H */
  32 diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
  33 index 135c4aa..9ab3d13 100644
  34 --- a/arch/mips/kernel/proc.c
  35 +++ b/arch/mips/kernel/proc.c
  36 @@ -12,6 +12,7 @@
  37  #include <asm/cpu-features.h>
  38  #include <asm/mipsregs.h>
  39  #include <asm/processor.h>
  40 +#include <asm/prom.h>
  41  #include <asm/mips_machine.h>
  42
  43  unsigned int vced_count, vcei_count;
  44 @@ -34,7 +35,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
  45          */
  46         if (n == 0) {
  47                 seq_printf(m, "system type\t\t: %s\n", get_system_type());
  48 -               if (mips_get_machine_name())
  49 +               if (of_mips_get_machine_name())
  50 +                       seq_printf(m, "machine\t\t\t: %s\n",
  51 +                                  of_mips_get_machine_name());
  52 +               else if (mips_get_machine_name())
  53                         seq_printf(m, "machine\t\t\t: %s\n",
  54                                    mips_get_machine_name());
  55         }
  56 diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
  57 index 028f6f8..1aa68a2 100644
  58 --- a/arch/mips/kernel/prom.c
  59 +++ b/arch/mips/kernel/prom.c
  60 @@ -23,6 +23,13 @@
  61  #include <asm/page.h>
  62  #include <asm/prom.h>
  63
  64 +static char of_mips_machine_name[64] = "Unknown";
  65 +
  66 +char *of_mips_get_machine_name(void)
  67 +{
  68 +       return of_mips_machine_name;
  69 +}
  70 +
  71  int __init early_init_dt_scan_memory_arch(unsigned long node,
  72                                           const char *uname, int depth,
  73                                           void *data)
  74 @@ -50,6 +57,20 @@ void __init early_init_dt_setup_initrd_arch(unsigned long start,
  75  }
  76  #endif
  77
  78 +int __init early_init_dt_scan_model(unsigned long node,
  79 +       const char *uname, int depth,
  80 +       void *data)
  81 +{
  82 +       if (!depth) {
  83 +               char *model = of_get_flat_dt_prop(node, "model", NULL);
  84 +               if (model) {
  85 +                       snprintf(of_mips_machine_name, sizeof(of_mips_machine_name), model);
  86 +                       pr_info("MIPS: machine is %s\n", of_mips_machine_name);
  87 +               }
  88 +       }
  89 +       return 0;
  90 +}
  91 +
  92  void __init early_init_devtree(void *params)
  93  {
  94         /* Setup flat device-tree pointer */
  95 @@ -65,6 +86,9 @@ void __init early_init_devtree(void *params)
  96         /* Scan memory nodes */
  97         of_scan_flat_dt(early_init_dt_scan_root, NULL);
  98         of_scan_flat_dt(early_init_dt_scan_memory_arch, NULL);
  99 +
 100 +       /* try to load the mips machine name */
 101 +       of_scan_flat_dt(early_init_dt_scan_model, NULL);
 102  }
 103
 104  void __init __dt_setup_arch(struct boot_param_header *bph)
 105 --
 106 1.7.10.4
 107