include/asm-mips/sgialib.h

   1 /* $Id: sgialib.h,v 1.2 1998/07/08 16:01:13 ralf Exp $
   2  * sgialib.h: SGI ARCS firmware interface library for the Linux kernel.
   3  *
   4  * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
   5  */
   6
   7 #ifndef _MIPS_SGIALIB_H
   8 #define _MIPS_SGIALIB_H
   9
  10 #include <asm/sgiarcs.h>
  11
  12 extern struct linux_promblock *sgi_pblock;
  13 extern struct linux_romvec *romvec;
  14 extern int prom_argc;
  15 extern char **prom_argv, **prom_envp;
  16
  17 extern int prom_flags;
  18 #define PROM_FLAG_ARCS  1
  19
  20 /* Init the PROM library and it's internal data structures.  Called
  21  * at boot time from head.S before start_kernel is invoked.
  22  */
  23 extern int prom_init(int argc, char **argv, char **envp);
  24
  25 /* Simple char-by-char console I/O. */
  26 extern void prom_putchar(char c);
  27 extern char prom_getchar(void);
  28
  29 /* Generic printf() using ARCS console I/O. */
  30 extern void prom_printf(char *fmt, ...);
  31
  32 /* Memory descriptor management. */
  33 #define PROM_MAX_PMEMBLOCKS    32
  34 struct prom_pmemblock {
  35         unsigned long base; /* Within KSEG0. */
  36         unsigned int size;  /* In bytes. */
  37         unsigned int type;  /* free or prom memory */
  38 };
  39
  40 /* Get next memory descriptor after CURR, returns first descriptor
  41  * in chain is CURR is NULL.
  42  */
  43 extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
  44 #define PROM_NULL_MDESC   ((struct linux_mdesc *) 0)
  45
  46 /* Called by prom_init to setup the physical memory pmemblock
  47  * array.
  48  */
  49 extern void prom_meminit(void);
  50 extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
  51
  52 /* Returns pointer to PROM physical memory block array. */
  53 extern struct prom_pmemblock *prom_getpblock_array(void);
  54
  55 /* PROM device tree library routines. */
  56 #define PROM_NULL_COMPONENT ((pcomponent *) 0)
  57
  58 /* Get sibling component of THIS. */
  59 extern pcomponent *prom_getsibling(pcomponent *this);
  60
  61 /* Get child component of THIS. */
  62 extern pcomponent *prom_getchild(pcomponent *this);
  63
  64 /* Get parent component of CHILD. */
  65 extern pcomponent *prom_getparent(pcomponent *child);
  66
  67 /* Copy component opaque data of component THIS into BUFFER
  68  * if component THIS has opaque data.  Returns success or
  69  * failure status.
  70  */
  71 extern long prom_getcdata(void *buffer, pcomponent *this);
  72
  73 /* Other misc. component routines. */
  74 extern pcomponent *prom_childadd(pcomponent *this, pcomponent *tmp, void *data);
  75 extern long prom_delcomponent(pcomponent *this);
  76 extern pcomponent *prom_componentbypath(char *path);
  77
  78 /* This is called at prom_init time to identify the
  79  * ARC architecture we are running on
  80  */
  81 extern void prom_identify_arch(void);
  82
  83 /* Environemt variable routines. */
  84 extern char *prom_getenv(char *name);
  85 extern long prom_setenv(char *name, char *value);
  86
  87 /* ARCS command line acquisition and parsing. */
  88 extern char *prom_getcmdline(void);
  89 extern void prom_init_cmdline(void);
  90
  91 /* Acquiring info about the current time, etc. */
  92 extern struct linux_tinfo *prom_gettinfo(void);
  93 extern unsigned long prom_getrtime(void);
  94
  95 /* File operations. */
  96 extern long prom_getvdirent(unsigned long fd, struct linux_vdirent *ent, unsigned long num, unsigned long *cnt);
  97 extern long prom_open(char *name, enum linux_omode md, unsigned long *fd);
  98 extern long prom_close(unsigned long fd);
  99 extern long prom_read(unsigned long fd, void *buf, unsigned long num, unsigned long *cnt);
 100 extern long prom_getrstatus(unsigned long fd);
 101 extern long prom_write(unsigned long fd, void *buf, unsigned long num, unsigned long *cnt);
 102 extern long prom_seek(unsigned long fd, struct linux_bigint *off, enum linux_seekmode sm);
 103 extern long prom_mount(char *name, enum linux_mountops op);
 104 extern long prom_getfinfo(unsigned long fd, struct linux_finfo *buf);
 105 extern long prom_setfinfo(unsigned long fd, unsigned long flags, unsigned long msk);
 106
 107 /* Running stand-along programs. */
 108 extern long prom_load(char *name, unsigned long end, unsigned long *pc, unsigned long *eaddr);
 109 extern long prom_invoke(unsigned long pc, unsigned long sp, long argc, char **argv, char **envp);
 110 extern long prom_exec(char *name, long argc, char **argv, char **envp);
 111
 112 /* Misc. routines. */
 113 extern void prom_halt(void) __attribute__((noreturn));
 114 extern void prom_powerdown(void) __attribute__((noreturn));
 115 extern void prom_restart(void) __attribute__((noreturn));
 116 extern void prom_reboot(void) __attribute__((noreturn));
 117 extern void prom_imode(void) __attribute__((noreturn));
 118 extern long prom_cfgsave(void);
 119 extern struct linux_sysid *prom_getsysid(void);
 120 extern void prom_cacheflush(void);
 121
 122 #endif /* !(_MIPS_SGIALIB_H) */