arch/ppc/amiga/bootinfo.c

   1 /*
   2  *  Extracted from arch/m68k/kernel/setup.c.
   3  *  Should be properly generalized and put somewhere else.
   4  *                              Jesper
   5  */
   6
   7 #include <linux/types.h>
   8 #include <linux/kernel.h>
   9 #include <linux/string.h>
  10 #include <linux/init.h>
  11
  12 #include <asm/setup.h>
  13 #include <asm/bootinfo.h>
  14
  15 extern char cmd_line[CL_SIZE];
  16
  17 extern int num_memory;
  18 extern int m68k_realnum_memory;
  19 extern struct mem_info memory[NUM_MEMINFO];
  20 extern struct mem_info m68k_memory[NUM_MEMINFO];
  21 extern struct mem_info ramdisk;
  22
  23 extern int amiga_parse_bootinfo(const struct bi_record *);
  24 extern int atari_parse_bootinfo(const struct bi_record *);
  25 extern int mac_parse_bootinfo(const struct bi_record *);
  26
  27 void __init parse_bootinfo(const struct bi_record *record)
  28 {
  29     while (record->tag != BI_LAST) {
  30         int unknown = 0;
  31         const u_long *data = record->data;
  32         switch (record->tag) {
  33             case BI_MACHTYPE:
  34             case BI_CPUTYPE:
  35             case BI_FPUTYPE:
  36             case BI_MMUTYPE:
  37                 /* Already set up by head.S */
  38                 break;
  39
  40             case BI_MEMCHUNK:
  41                 if (num_memory < NUM_MEMINFO) {
  42                     memory[num_memory].addr = data[0];
  43                     memory[num_memory].size = data[1];
  44                     num_memory++;
  45
  46                     /* FIXME: duplicate for m68k drivers. */
  47                     m68k_memory[m68k_realnum_memory].addr = data[0];
  48                     m68k_memory[m68k_realnum_memory].size = data[1];
  49                     m68k_realnum_memory++;
  50                 } else
  51                     printk("parse_bootinfo: too many memory chunks\n");
  52                 break;
  53
  54             case BI_RAMDISK:
  55                 ramdisk.addr = data[0];
  56                 ramdisk.size = data[1];
  57                 break;
  58
  59             case BI_COMMAND_LINE:
  60                 strlcpy(cmd_line, (const char *)data, sizeof(cmd_line));
  61                 break;
  62
  63             default:
  64                 if (MACH_IS_AMIGA)
  65                     unknown = amiga_parse_bootinfo(record);
  66                 else if (MACH_IS_ATARI)
  67                     unknown = atari_parse_bootinfo(record);
  68                 else if (MACH_IS_MAC)
  69                     unknown = mac_parse_bootinfo(record);
  70                 else
  71                     unknown = 1;
  72         }
  73         if (unknown)
  74             printk("parse_bootinfo: unknown tag 0x%04x ignored\n",
  75                    record->tag);
  76         record = (struct bi_record *)((u_long)record+record->size);
  77     }
  78 }