sgialib.h
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上传日期:2013-02-24
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- /*
- * 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 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
- /* Init the PROM library and it's internal data structures. Called
- * at boot time from head.S before start_kernel is invoked.
- */
- extern int prom_init(int argc, char **argv, char **envp);
- /* 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);
- /* Returns pointer to PROM physical memory block array. */
- extern struct prom_pmemblock *prom_getpblock_array(void);
- /* 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 */