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1da177e4 LT |
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 | * | |
79add627 | 8 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
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 | ||
1da177e4 LT |
36 | /* Get next memory descriptor after CURR, returns first descriptor |
37 | * in chain is CURR is NULL. | |
38 | */ | |
39 | extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr); | |
70342287 | 40 | #define PROM_NULL_MDESC ((struct linux_mdesc *) 0) |
1da177e4 LT |
41 | |
42 | /* Called by prom_init to setup the physical memory pmemblock | |
43 | * array. | |
44 | */ | |
45 | extern void prom_meminit(void); | |
1da177e4 LT |
46 | |
47 | /* PROM device tree library routines. */ | |
48 | #define PROM_NULL_COMPONENT ((pcomponent *) 0) | |
49 | ||
50 | /* Get sibling component of THIS. */ | |
51 | extern pcomponent *ArcGetPeer(pcomponent *this); | |
52 | ||
53 | /* Get child component of THIS. */ | |
54 | extern pcomponent *ArcGetChild(pcomponent *this); | |
55 | ||
1da177e4 LT |
56 | /* This is called at prom_init time to identify the |
57 | * ARC architecture we are running on | |
58 | */ | |
59 | extern void prom_identify_arch(void); | |
60 | ||
61 | /* Environment variable routines. */ | |
62 | extern PCHAR ArcGetEnvironmentVariable(PCHAR name); | |
63 | extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value); | |
64 | ||
cb6edd45 | 65 | /* ARCS command line parsing. */ |
1da177e4 LT |
66 | extern void prom_init_cmdline(void); |
67 | ||
1da177e4 | 68 | /* File operations. */ |
1da177e4 | 69 | extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt); |
1da177e4 | 70 | extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt); |
1da177e4 LT |
71 | |
72 | /* Misc. routines. */ | |
1da177e4 LT |
73 | extern VOID ArcReboot(VOID) __attribute__((noreturn)); |
74 | extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn)); | |
1da177e4 LT |
75 | extern VOID ArcFlushAllCaches(VOID); |
76 | extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID); | |
77 | ||
78 | #endif /* _ASM_SGIALIB_H */ |