/* * 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 #define PROM_FLAG_DONT_FREE_TEMP 4 /* 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); extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID); #endif /* _ASM_SGIALIB_H */