include/asm-ppc/bootinfo.h

   1 /*
   2  * Non-machine dependent bootinfo structure.  Basic idea
   3  * borrowed from the m68k.
   4  *
   5  * Copyright (C) 1999 Cort Dougan <cort@ppc.kernel.org>
   6  */
   7
   8 #ifdef __KERNEL__
   9 #ifndef _PPC_BOOTINFO_H
  10 #define _PPC_BOOTINFO_H
  11
  12 #include <asm/page.h>
  13
  14 struct bi_record {
  15         unsigned long tag;              /* tag ID */
  16         unsigned long size;             /* size of record (in bytes) */
  17         unsigned long data[0];          /* data */
  18 };
  19
  20 #define BI_FIRST                0x1010  /* first record - marker */
  21 #define BI_LAST                 0x1011  /* last record - marker */
  22 #define BI_CMD_LINE             0x1012
  23 #define BI_BOOTLOADER_ID        0x1013
  24 #define BI_INITRD               0x1014
  25 #define BI_SYSMAP               0x1015
  26 #define BI_MACHTYPE             0x1016
  27 #define BI_MEMSIZE              0x1017
  28 #define BI_BOARD_INFO           0x1018
  29
  30 extern struct bi_record *find_bootinfo(void);
  31 extern void bootinfo_init(struct bi_record *rec);
  32 extern void bootinfo_append(unsigned long tag, unsigned long size, void * data);
  33 extern void parse_bootinfo(struct bi_record *rec);
  34 extern unsigned long boot_mem_size;
  35
  36 static inline struct bi_record *
  37 bootinfo_addr(unsigned long offset)
  38 {
  39
  40         return (struct bi_record *)_ALIGN((offset) + (1 << 20) - 1,
  41                                           (1 << 20));
  42 }
  43
  44
  45 #endif /* _PPC_BOOTINFO_H */
  46 #endif /* __KERNEL__ */