| /* | |
| * 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 */ |