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/* * 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_argc; extern LONG *_prom_argv, *_prom_envp; /* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer. These macros take care of sign extension. */ #define prom_argv(index) ((char *) (long) _prom_argv[(index)]) #define prom_argc(index) ((char *) (long) _prom_argc[(index)]) 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 void prom_putchar(char c); 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) /* Get sibling component of THIS. */ extern pcomponent *ArcGetPeer(pcomponent *this); /* Get child component of THIS. */ extern pcomponent *ArcGetChild(pcomponent *this); /* 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); extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value); /* ARCS command line parsing. */ extern void prom_init_cmdline(void); /* 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 ArcHalt(VOID) __noreturn; extern VOID ArcPowerDown(VOID) __noreturn; extern VOID ArcRestart(VOID) __noreturn; extern VOID ArcReboot(VOID) __noreturn; extern VOID ArcEnterInteractiveMode(VOID) __noreturn; extern VOID ArcFlushAllCaches(VOID); extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID); #endif /* _ASM_SGIALIB_H */