target/linux/generic/patches-2.6.31/020-mips_multi_machine_support.patch

   1 --- /dev/null
   2 +++ b/arch/mips/include/asm/mips_machine.h
   3 @@ -0,0 +1,47 @@
   4 +/*
   5 + *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   6 + *
   7 + *  This program is free software; you can redistribute it and/or modify it
   8 + *  under the terms of the GNU General Public License version 2 as published
   9 + *  by the Free Software Foundation.
  10 + *
  11 + */
  12 +
  13 +#ifndef __ASM_MIPS_MACHINE_H
  14 +#define __ASM_MIPS_MACHINE_H
  15 +
  16 +#include <linux/init.h>
  17 +#include <linux/list.h>
  18 +
  19 +struct mips_machine {
  20 +       unsigned long           mach_type;
  21 +       void                    (*mach_setup)(void);
  22 +       char                    *mach_name;
  23 +       struct list_head        list;
  24 +};
  25 +
  26 +void mips_machine_register(struct mips_machine *) __init;
  27 +void mips_machine_setup(unsigned long machtype) __init;
  28 +void mips_machine_set_name(char *name) __init;
  29 +
  30 +extern char *mips_machine_name;
  31 +
  32 +#define MIPS_MACHINE(_type, _name, _setup)                     \
  33 +static char machine_name_##_type[] __initdata = _name;         \
  34 +static struct mips_machine machine_##_type __initdata =                \
  35 +{                                                              \
  36 +       .mach_type      = _type,                                \
  37 +       .mach_name      = machine_name_##_type,                 \
  38 +       .mach_setup     = _setup,                               \
  39 +};                                                             \
  40 +                                                               \
  41 +static int __init register_machine_##_type(void)               \
  42 +{                                                              \
  43 +       mips_machine_register(&machine_##_type);                \
  44 +       return 0;                                               \
  45 +}                                                              \
  46 +                                                               \
  47 +pure_initcall(register_machine_##_type)
  48 +
  49 +#endif /* __ASM_MIPS_MACHINE_H */
  50 +
  51 --- /dev/null
  52 +++ b/arch/mips/kernel/mips_machine.c
  53 @@ -0,0 +1,74 @@
  54 +/*
  55 + *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
  56 + *
  57 + *  This program is free software; you can redistribute it and/or modify it
  58 + *  under the terms of the GNU General Public License version 2 as published
  59 + *  by the Free Software Foundation.
  60 + *
  61 + */
  62 +#include <linux/mm.h>
  63 +
  64 +#include <asm/mips_machine.h>
  65 +#include <asm/bootinfo.h>
  66 +
  67 +static struct list_head mips_machines __initdata =
  68 +               LIST_HEAD_INIT(mips_machines);
  69 +
  70 +char *mips_machine_name = "Unknown";
  71 +
  72 +static struct mips_machine * __init mips_machine_find(unsigned long machtype)
  73 +{
  74 +       struct list_head *this;
  75 +
  76 +       list_for_each(this, &mips_machines) {
  77 +               struct mips_machine *mach;
  78 +
  79 +               mach = list_entry(this, struct mips_machine, list);
  80 +               if (mach->mach_type == machtype)
  81 +                       return mach;
  82 +       }
  83 +
  84 +       return NULL;
  85 +}
  86 +
  87 +void __init mips_machine_register(struct mips_machine *mach)
  88 +{
  89 +       list_add_tail(&mach->list, &mips_machines);
  90 +}
  91 +
  92 +void __init mips_machine_set_name(char *name)
  93 +{
  94 +       unsigned int len;
  95 +       char *p;
  96 +
  97 +       if (name == NULL)
  98 +               return;
  99 +
 100 +       len = strlen(name);
 101 +       p = kmalloc(len + 1, GFP_KERNEL);
 102 +       if (p) {
 103 +               strncpy(p, name, len);
 104 +               p[len] = '\0';
 105 +               mips_machine_name = p;
 106 +       } else {
 107 +               printk(KERN_WARNING "MIPS: no memory for machine_name\n");
 108 +       }
 109 +}
 110 +
 111 +void __init mips_machine_setup(unsigned long machtype)
 112 +{
 113 +       struct mips_machine *mach;
 114 +
 115 +       mach = mips_machine_find(machtype);
 116 +       if (!mach) {
 117 +               printk(KERN_ALERT "MIPS: no machine registered for "
 118 +                       "machtype %lu\n", machtype);
 119 +               return;
 120 +       }
 121 +
 122 +       mips_machine_set_name(mach->mach_name);
 123 +       printk(KERN_INFO "MIPS: machine is %s\n", mips_machine_name);
 124 +
 125 +       if (mach->mach_setup)
 126 +               mach->mach_setup();
 127 +}
 128 --- a/arch/mips/kernel/Makefile
 129 +++ b/arch/mips/kernel/Makefile
 130 @@ -87,6 +87,7 @@ obj-$(CONFIG_GPIO_TXX9)               += gpio_txx9.o
 131
 132  obj-$(CONFIG_KEXEC)            += machine_kexec.o relocate_kernel.o
 133  obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
 134 +obj-$(CONFIG_MIPS_MACHINE)     += mips_machine.o
 135
 136  CFLAGS_cpu-bugs64.o    = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
 137
 138 --- a/arch/mips/Kconfig
 139 +++ b/arch/mips/Kconfig
 140 @@ -837,6 +837,9 @@ config MIPS_DISABLE_OBSOLETE_IDE
 141  config SYNC_R4K
 142         bool
 143
 144 +config MIPS_MACHINE
 145 +       def_bool n
 146 +
 147  config NO_IOPORT
 148         def_bool n
 149
 150 --- a/arch/mips/kernel/proc.c
 151 +++ b/arch/mips/kernel/proc.c
 152 @@ -12,6 +12,7 @@
 153  #include <asm/cpu-features.h>
 154  #include <asm/mipsregs.h>
 155  #include <asm/processor.h>
 156 +#include <asm/mips_machine.h>
 157
 158  unsigned int vced_count, vcei_count;
 159
 160 @@ -31,8 +32,12 @@ static int show_cpuinfo(struct seq_file
 161         /*
 162          * For the first processor also print the system type
 163          */
 164 -       if (n == 0)
 165 +       if (n == 0) {
 166                 seq_printf(m, "system type\t\t: %s\n", get_system_type());
 167 +#ifdef CONFIG_MIPS_MACHINE
 168 +               seq_printf(m, "machine\t\t\t: %s\n", mips_machine_name);
 169 +#endif
 170 +       }
 171
 172         seq_printf(m, "processor\t\t: %ld\n", n);
 173         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",