FreeBSD/Linux Kernel Cross Reference
sys/include/asm-mips64/sgialib.h

     /*
      * This file is subject to the terms and conditions of the GNU General Public
      * License.  See the file "COPYING" in the main directory of this archive
      * for more details.
      *
      * SGI ARCS firmware interface library for the Linux kernel.
      *
      * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
      * Copyright (C) 2001, 2002 Ralf Baechle (ralf@gnu.org)
     */
    #ifndef _ASM_SGIALIB_H
    #define _ASM_SGIALIB_H
    
    #include <asm/sgiarcs.h>
    
    extern struct linux_romvec *romvec;
    extern int prom_argc;
    
    extern LONG *_prom_argv, *_prom_envp;
    
    /* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
       These macros take care of sign extension.  */
    #define prom_argv(index) ((char *) (long) _prom_argv[(index)])
    #define prom_argc(index) ((char *) (long) _prom_argc[(index)])
    
    extern int prom_flags;
    #define PROM_FLAG_ARCS                  1
    #define PROM_FLAG_USE_AS_CONSOLE        2
    
    /* Init the PROM library and it's internal data structures. */
    extern void prom_init(int argc, char **argv, char **envp, int *prom_vec);
    
    /* Simple char-by-char console I/O. */
    extern void prom_putchar(char c);
    extern char prom_getchar(void);
    
    /* Generic printf() using ARCS console I/O. */
    extern void prom_printf(char *fmt, ...);
    
    /* Memory descriptor management. */
    #define PROM_MAX_PMEMBLOCKS    32
    struct prom_pmemblock {
            LONG base;              /* Within KSEG0 or XKPHYS. */
            ULONG size;             /* In bytes. */
            ULONG type;             /* free or prom memory */
    };
    
    /* Get next memory descriptor after CURR, returns first descriptor
     * in chain is CURR is NULL.
     */
    extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
    #define PROM_NULL_MDESC   ((struct linux_mdesc *) 0)
    
    /* Called by prom_init to setup the physical memory pmemblock
     * array.
     */
    extern void prom_meminit(void);
    extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
    
    /* PROM device tree library routines. */
    #define PROM_NULL_COMPONENT ((pcomponent *) 0)
    
    /* Get sibling component of THIS. */
    extern pcomponent *ArcGetPeer(pcomponent *this);
    
    /* Get child component of THIS. */
    extern pcomponent *ArcGetChild(pcomponent *this);
    
    /* Get parent component of CHILD. */
    extern pcomponent *prom_getparent(pcomponent *child);
    
    /* Copy component opaque data of component THIS into BUFFER
     * if component THIS has opaque data.  Returns success or
     * failure status.
     */
    extern long prom_getcdata(void *buffer, pcomponent *this);
    
    /* Other misc. component routines. */
    extern pcomponent *prom_childadd(pcomponent *this, pcomponent *tmp, void *data);
    extern long prom_delcomponent(pcomponent *this);
    extern pcomponent *prom_componentbypath(char *path);
    
    /* This is called at prom_init time to identify the
     * ARC architecture we are running on
     */
    extern void prom_identify_arch(void);
    
    /* Environment variable routines. */
    extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
    extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value);
    
    /* ARCS command line acquisition and parsing. */
    extern char *prom_getcmdline(void);
    extern void prom_init_cmdline(void);
    
    /* Acquiring info about the current time, etc. */
    extern struct linux_tinfo *prom_gettinfo(void);
    extern unsigned long prom_getrtime(void);
    
   /* File operations. */
   extern long prom_getvdirent(unsigned long fd, struct linux_vdirent *ent, unsigned long num, unsigned long *cnt);
   extern long prom_open(char *name, enum linux_omode md, unsigned long *fd);
   extern long prom_close(unsigned long fd);
   extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
   extern long prom_getrstatus(unsigned long fd);
   extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
   extern long prom_seek(unsigned long fd, struct linux_bigint *off, enum linux_seekmode sm);
   extern long prom_mount(char *name, enum linux_mountops op);
   extern long prom_getfinfo(unsigned long fd, struct linux_finfo *buf);
   extern long prom_setfinfo(unsigned long fd, unsigned long flags, unsigned long msk);
   
   /* Running stand-along programs. */
   extern long prom_load(char *name, unsigned long end, unsigned long *pc, unsigned long *eaddr);
   extern long prom_invoke(unsigned long pc, unsigned long sp, long argc, char **argv, char **envp);
   extern long prom_exec(char *name, long argc, char **argv, char **envp);
   
   /* Misc. routines. */
   extern VOID prom_halt(VOID) __attribute__((noreturn));
   extern VOID prom_powerdown(VOID) __attribute__((noreturn));
   extern VOID prom_restart(VOID) __attribute__((noreturn));
   extern VOID ArcReboot(VOID) __attribute__((noreturn));
   extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn));
   extern long prom_cfgsave(VOID);
   extern struct linux_sysid *prom_getsysid(VOID);
   extern VOID ArcFlushAllCaches(VOID);
   
   #endif /* _ASM_SGIALIB_H */

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