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 (davem@davemloft.net)
9 * Copyright (C) 2001, 2002 Ralf Baechle (ralf@gnu.org)
10 */
11#ifndef _ASM_SGIALIB_H
12#define _ASM_SGIALIB_H
13
14#include <linux/compiler.h>
15#include <asm/sgiarcs.h>
16
17extern struct linux_romvec *romvec;
18
19extern int prom_flags;
20
21#define PROM_FLAG_ARCS			1
22#define PROM_FLAG_USE_AS_CONSOLE	2
23#define PROM_FLAG_DONT_FREE_TEMP	4
24
25/* Simple char-by-char console I/O. */
26extern char prom_getchar(void);
27
28/* Get next memory descriptor after CURR, returns first descriptor
29 * in chain is CURR is NULL.
30 */
31extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
32#define PROM_NULL_MDESC	  ((struct linux_mdesc *) 0)
33
34/* Called by prom_init to setup the physical memory pmemblock
35 * array.
36 */
37extern void prom_meminit(void);
38
39/* PROM device tree library routines. */
40#define PROM_NULL_COMPONENT ((pcomponent *) 0)
41
42/* This is called at prom_init time to identify the
43 * ARC architecture we are running on
44 */
45extern void prom_identify_arch(void);
46
47/* Environment variable routines. */
48extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
49
50/* ARCS command line parsing. */
51extern void prom_init_cmdline(int argc, LONG *argv);
52
53/* File operations. */
54extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
55extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
56
57/* Misc. routines. */
58extern VOID ArcEnterInteractiveMode(VOID) __noreturn;
59extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
60
61#endif /* _ASM_SGIALIB_H */
62