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1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * SGI ARCS firmware interface library for the Linux kernel. | |
7 | * | |
8 | * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) | |
9 | * Copyright (C) 2001, 2002 Ralf Baechle (ralf@gnu.org) | |
10 | */ | |
11 | #ifndef _ASM_SGIALIB_H | |
12 | #define _ASM_SGIALIB_H | |
13 | ||
14 | #include <asm/sgiarcs.h> | |
15 | ||
16 | extern struct linux_romvec *romvec; | |
17 | extern int prom_argc; | |
18 | ||
19 | extern LONG *_prom_argv, *_prom_envp; | |
20 | ||
21 | /* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer. | |
22 | These macros take care of sign extension. */ | |
23 | #define prom_argv(index) ((char *) (long) _prom_argv[(index)]) | |
24 | #define prom_argc(index) ((char *) (long) _prom_argc[(index)]) | |
25 | ||
26 | extern int prom_flags; | |
27 | ||
28 | #define PROM_FLAG_ARCS 1 | |
29 | #define PROM_FLAG_USE_AS_CONSOLE 2 | |
30 | #define PROM_FLAG_DONT_FREE_TEMP 4 | |
31 | ||
32 | /* Simple char-by-char console I/O. */ | |
33 | extern void prom_putchar(char c); | |
34 | extern char prom_getchar(void); | |
35 | ||
36 | /* Generic printf() using ARCS console I/O. */ | |
37 | extern void prom_printf(char *fmt, ...); | |
38 | ||
39 | /* Memory descriptor management. */ | |
40 | #define PROM_MAX_PMEMBLOCKS 32 | |
41 | struct prom_pmemblock { | |
42 | LONG base; /* Within KSEG0 or XKPHYS. */ | |
43 | ULONG size; /* In bytes. */ | |
44 | ULONG type; /* free or prom memory */ | |
45 | }; | |
46 | ||
47 | /* Get next memory descriptor after CURR, returns first descriptor | |
48 | * in chain is CURR is NULL. | |
49 | */ | |
50 | extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr); | |
51 | #define PROM_NULL_MDESC ((struct linux_mdesc *) 0) | |
52 | ||
53 | /* Called by prom_init to setup the physical memory pmemblock | |
54 | * array. | |
55 | */ | |
56 | extern void prom_meminit(void); | |
57 | extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem); | |
58 | ||
59 | /* PROM device tree library routines. */ | |
60 | #define PROM_NULL_COMPONENT ((pcomponent *) 0) | |
61 | ||
62 | /* Get sibling component of THIS. */ | |
63 | extern pcomponent *ArcGetPeer(pcomponent *this); | |
64 | ||
65 | /* Get child component of THIS. */ | |
66 | extern pcomponent *ArcGetChild(pcomponent *this); | |
67 | ||
68 | /* Get parent component of CHILD. */ | |
69 | extern pcomponent *prom_getparent(pcomponent *child); | |
70 | ||
71 | /* Copy component opaque data of component THIS into BUFFER | |
72 | * if component THIS has opaque data. Returns success or | |
73 | * failure status. | |
74 | */ | |
75 | extern long prom_getcdata(void *buffer, pcomponent *this); | |
76 | ||
77 | /* Other misc. component routines. */ | |
78 | extern pcomponent *prom_childadd(pcomponent *this, pcomponent *tmp, void *data); | |
79 | extern long prom_delcomponent(pcomponent *this); | |
80 | extern pcomponent *prom_componentbypath(char *path); | |
81 | ||
82 | /* This is called at prom_init time to identify the | |
83 | * ARC architecture we are running on | |
84 | */ | |
85 | extern void prom_identify_arch(void); | |
86 | ||
87 | /* Environment variable routines. */ | |
88 | extern PCHAR ArcGetEnvironmentVariable(PCHAR name); | |
89 | extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value); | |
90 | ||
91 | /* ARCS command line acquisition and parsing. */ | |
92 | extern char *prom_getcmdline(void); | |
93 | extern void prom_init_cmdline(void); | |
94 | ||
95 | /* Acquiring info about the current time, etc. */ | |
96 | extern struct linux_tinfo *prom_gettinfo(void); | |
97 | extern unsigned long prom_getrtime(void); | |
98 | ||
99 | /* File operations. */ | |
100 | extern long prom_getvdirent(unsigned long fd, struct linux_vdirent *ent, unsigned long num, unsigned long *cnt); | |
101 | extern long prom_open(char *name, enum linux_omode md, unsigned long *fd); | |
102 | extern long prom_close(unsigned long fd); | |
103 | extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt); | |
104 | extern long prom_getrstatus(unsigned long fd); | |
105 | extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt); | |
106 | extern long prom_seek(unsigned long fd, struct linux_bigint *off, enum linux_seekmode sm); | |
107 | extern long prom_mount(char *name, enum linux_mountops op); | |
108 | extern long prom_getfinfo(unsigned long fd, struct linux_finfo *buf); | |
109 | extern long prom_setfinfo(unsigned long fd, unsigned long flags, unsigned long msk); | |
110 | ||
111 | /* Running stand-along programs. */ | |
112 | extern long prom_load(char *name, unsigned long end, unsigned long *pc, unsigned long *eaddr); | |
113 | extern long prom_invoke(unsigned long pc, unsigned long sp, long argc, char **argv, char **envp); | |
114 | extern long prom_exec(char *name, long argc, char **argv, char **envp); | |
115 | ||
116 | /* Misc. routines. */ | |
117 | extern VOID prom_halt(VOID) __attribute__((noreturn)); | |
118 | extern VOID prom_powerdown(VOID) __attribute__((noreturn)); | |
119 | extern VOID prom_restart(VOID) __attribute__((noreturn)); | |
120 | extern VOID ArcReboot(VOID) __attribute__((noreturn)); | |
121 | extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn)); | |
122 | extern long prom_cfgsave(VOID); | |
123 | extern struct linux_sysid *prom_getsysid(VOID); | |
124 | extern VOID ArcFlushAllCaches(VOID); | |
125 | extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID); | |
126 | ||
127 | #endif /* _ASM_SGIALIB_H */ |