128 строки
4.5 KiB
C
128 строки
4.5 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* SGI ARCS firmware interface library for the Linux kernel.
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*
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* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
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* Copyright (C) 2001, 2002 Ralf Baechle (ralf@gnu.org)
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*/
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#ifndef _ASM_SGIALIB_H
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#define _ASM_SGIALIB_H
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#include <asm/sgiarcs.h>
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extern struct linux_romvec *romvec;
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extern int prom_argc;
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extern LONG *_prom_argv, *_prom_envp;
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/* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
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These macros take care of sign extension. */
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#define prom_argv(index) ((char *) (long) _prom_argv[(index)])
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#define prom_argc(index) ((char *) (long) _prom_argc[(index)])
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extern int prom_flags;
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#define PROM_FLAG_ARCS 1
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#define PROM_FLAG_USE_AS_CONSOLE 2
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#define PROM_FLAG_DONT_FREE_TEMP 4
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/* Simple char-by-char console I/O. */
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extern void prom_putchar(char c);
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extern char prom_getchar(void);
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/* Generic printf() using ARCS console I/O. */
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extern void prom_printf(char *fmt, ...);
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/* Memory descriptor management. */
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#define PROM_MAX_PMEMBLOCKS 32
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struct prom_pmemblock {
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LONG base; /* Within KSEG0 or XKPHYS. */
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ULONG size; /* In bytes. */
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ULONG type; /* free or prom memory */
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};
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/* Get next memory descriptor after CURR, returns first descriptor
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* in chain is CURR is NULL.
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*/
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extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
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#define PROM_NULL_MDESC ((struct linux_mdesc *) 0)
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/* Called by prom_init to setup the physical memory pmemblock
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* array.
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*/
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extern void prom_meminit(void);
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extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
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/* PROM device tree library routines. */
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#define PROM_NULL_COMPONENT ((pcomponent *) 0)
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/* Get sibling component of THIS. */
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extern pcomponent *ArcGetPeer(pcomponent *this);
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/* Get child component of THIS. */
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extern pcomponent *ArcGetChild(pcomponent *this);
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/* Get parent component of CHILD. */
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extern pcomponent *prom_getparent(pcomponent *child);
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/* Copy component opaque data of component THIS into BUFFER
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* if component THIS has opaque data. Returns success or
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* failure status.
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*/
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extern long prom_getcdata(void *buffer, pcomponent *this);
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/* Other misc. component routines. */
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extern pcomponent *prom_childadd(pcomponent *this, pcomponent *tmp, void *data);
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extern long prom_delcomponent(pcomponent *this);
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extern pcomponent *prom_componentbypath(char *path);
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/* This is called at prom_init time to identify the
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* ARC architecture we are running on
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*/
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extern void prom_identify_arch(void);
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/* Environment variable routines. */
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extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
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extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value);
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/* ARCS command line acquisition and parsing. */
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extern char *prom_getcmdline(void);
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extern void prom_init_cmdline(void);
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/* Acquiring info about the current time, etc. */
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extern struct linux_tinfo *prom_gettinfo(void);
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extern unsigned long prom_getrtime(void);
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/* File operations. */
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extern long prom_getvdirent(unsigned long fd, struct linux_vdirent *ent, unsigned long num, unsigned long *cnt);
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extern long prom_open(char *name, enum linux_omode md, unsigned long *fd);
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extern long prom_close(unsigned long fd);
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extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
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extern long prom_getrstatus(unsigned long fd);
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extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
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extern long prom_seek(unsigned long fd, struct linux_bigint *off, enum linux_seekmode sm);
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extern long prom_mount(char *name, enum linux_mountops op);
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extern long prom_getfinfo(unsigned long fd, struct linux_finfo *buf);
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extern long prom_setfinfo(unsigned long fd, unsigned long flags, unsigned long msk);
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/* Running stand-along programs. */
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extern long prom_load(char *name, unsigned long end, unsigned long *pc, unsigned long *eaddr);
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extern long prom_invoke(unsigned long pc, unsigned long sp, long argc, char **argv, char **envp);
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extern long prom_exec(char *name, long argc, char **argv, char **envp);
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/* Misc. routines. */
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extern VOID prom_halt(VOID) __attribute__((noreturn));
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extern VOID prom_powerdown(VOID) __attribute__((noreturn));
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extern VOID prom_restart(VOID) __attribute__((noreturn));
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extern VOID ArcReboot(VOID) __attribute__((noreturn));
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extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn));
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extern long prom_cfgsave(VOID);
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extern struct linux_sysid *prom_getsysid(VOID);
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extern VOID ArcFlushAllCaches(VOID);
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extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
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#endif /* _ASM_SGIALIB_H */
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