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gerrit-public.fairphone.software / kernel / msm-4.9 / f36861d550e6f1a1a7a851b88938f52bdaed7682 / . / include / asm-mips / sgialib.h
blob: bfce5c786f1c2772c0a5515c3e10b62b7e6d6185 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
16extern struct linux_romvec *romvec;
17extern int prom_argc;
18
19extern 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
26extern 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. */
33extern void prom_putchar(char c);
34extern char prom_getchar(void);
35
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]36/* Memory descriptor management. */
37#define PROM_MAX_PMEMBLOCKS 32
38struct prom_pmemblock {
39 LONG base; /* Within KSEG0 or XKPHYS. */
40 ULONG size; /* In bytes. */
41 ULONG type; /* free or prom memory */
42};
43
44/* Get next memory descriptor after CURR, returns first descriptor
45 * in chain is CURR is NULL.
46 */
47extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
48#define PROM_NULL_MDESC ((struct linux_mdesc *) 0)
49
50/* Called by prom_init to setup the physical memory pmemblock
51 * array.
52 */
53extern void prom_meminit(void);
54extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
55
56/* PROM device tree library routines. */
57#define PROM_NULL_COMPONENT ((pcomponent *) 0)
58
59/* Get sibling component of THIS. */
60extern pcomponent *ArcGetPeer(pcomponent *this);
61
62/* Get child component of THIS. */
63extern pcomponent *ArcGetChild(pcomponent *this);
64
65/* Get parent component of CHILD. */
66extern pcomponent *prom_getparent(pcomponent *child);
67
68/* Copy component opaque data of component THIS into BUFFER
69 * if component THIS has opaque data. Returns success or
70 * failure status.
71 */
72extern long prom_getcdata(void *buffer, pcomponent *this);
73
74/* Other misc. component routines. */
75extern pcomponent *prom_childadd(pcomponent *this, pcomponent *tmp, void *data);
76extern long prom_delcomponent(pcomponent *this);
77extern pcomponent *prom_componentbypath(char *path);
78
79/* This is called at prom_init time to identify the
80 * ARC architecture we are running on
81 */
82extern void prom_identify_arch(void);
83
84/* Environment variable routines. */
85extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
86extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value);
87
88/* ARCS command line acquisition and parsing. */
89extern char *prom_getcmdline(void);
90extern void prom_init_cmdline(void);
91
92/* Acquiring info about the current time, etc. */
93extern struct linux_tinfo *prom_gettinfo(void);
94extern unsigned long prom_getrtime(void);
95
96/* File operations. */
97extern long prom_getvdirent(unsigned long fd, struct linux_vdirent *ent, unsigned long num, unsigned long *cnt);
98extern long prom_open(char *name, enum linux_omode md, unsigned long *fd);
99extern long prom_close(unsigned long fd);
100extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
101extern long prom_getrstatus(unsigned long fd);
102extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
103extern long prom_seek(unsigned long fd, struct linux_bigint *off, enum linux_seekmode sm);
104extern long prom_mount(char *name, enum linux_mountops op);
105extern long prom_getfinfo(unsigned long fd, struct linux_finfo *buf);
106extern long prom_setfinfo(unsigned long fd, unsigned long flags, unsigned long msk);
107
108/* Running stand-along programs. */
109extern long prom_load(char *name, unsigned long end, unsigned long *pc, unsigned long *eaddr);
110extern long prom_invoke(unsigned long pc, unsigned long sp, long argc, char **argv, char **envp);
111extern long prom_exec(char *name, long argc, char **argv, char **envp);
112
113/* Misc. routines. */
114extern VOID prom_halt(VOID) __attribute__((noreturn));
115extern VOID prom_powerdown(VOID) __attribute__((noreturn));
116extern VOID prom_restart(VOID) __attribute__((noreturn));
117extern VOID ArcReboot(VOID) __attribute__((noreturn));
118extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn));
119extern long prom_cfgsave(VOID);
120extern struct linux_sysid *prom_getsysid(VOID);
121extern VOID ArcFlushAllCaches(VOID);
122extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
123
124#endif /* _ASM_SGIALIB_H */