/*
* 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 ( davem @ davemloft . net )
* Copyright ( C ) 2001 , 2002 Ralf Baechle ( ralf @ gnu . org )
*/
#ifndef _ASM_SGIALIB_H
#define _ASM_SGIALIB_H
#include <linux/compiler.h>
#include <asm /sgiarcs.h>
extern struct linux_romvec *romvec;
extern int prom_flags;
#define PROM_FLAG_ARCS 1
#define PROM_FLAG_USE_AS_CONSOLE 2
#define PROM_FLAG_DONT_FREE_TEMP 4
/* Simple char-by-char console I/O. */
extern char prom_getchar(void );
/* 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 );
/* PROM device tree library routines. */
#define PROM_NULL_COMPONENT ((pcomponent *) 0 )
/* This is called at prom_init time to identify the
* ARC architecture we are running on
*/
extern void prom_identify_arch(void );
/* Environment variable routines. */
extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
/* ARCS command line parsing. */
extern void prom_init_cmdline(int argc, LONG *argv);
/* File operations. */
extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
/* Misc. routines. */
extern VOID ArcEnterInteractiveMode(VOID ) __noreturn;
extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
#endif /* _ASM_SGIALIB_H */
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