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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* $Id: sgialib.h,v 1.3 1999/12/04 03:59:12 ralf Exp $ * * 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) */ #ifndef _ASM_SGIALIB_H #define _ASM_SGIALIB_H #include <asm/sgiarcs.h> extern PSYSTEM_PARAMETER_BLOCK sgi_pblock; 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); /* Environemt variable routines. */ extern PCHAR ArcGetEnvironmentVariable(PCHAR name); extern LONG SetEnvironmentVariable(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 */ |