2024-09-09 08:52:07 +00:00
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* SGI ARCS firmware interface library for the Linux kernel.
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*
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* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
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* Copyright (C) 2001, 2002 Ralf Baechle (ralf@gnu.org)
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*/
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#ifndef _ASM_SGIALIB_H
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#define _ASM_SGIALIB_H
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#include <asm/sgiarcs.h>
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extern struct linux_romvec *romvec;
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extern int prom_argc;
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extern LONG *_prom_argv, *_prom_envp;
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/* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
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These macros take care of sign extension. */
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#define prom_argv(index) ((char *) (long) _prom_argv[(index)])
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#define prom_argc(index) ((char *) (long) _prom_argc[(index)])
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extern int prom_flags;
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#define PROM_FLAG_ARCS 1
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#define PROM_FLAG_USE_AS_CONSOLE 2
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#define PROM_FLAG_DONT_FREE_TEMP 4
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/* Simple char-by-char console I/O. */
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extern void prom_putchar(char c);
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extern char prom_getchar(void);
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/* Get next memory descriptor after CURR, returns first descriptor
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* in chain is CURR is NULL.
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*/
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extern struct linux_mdesc *prom_getmdesc(struct linux_mdesc *curr);
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2024-09-09 08:57:42 +00:00
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#define PROM_NULL_MDESC ((struct linux_mdesc *) 0)
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2024-09-09 08:52:07 +00:00
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/* Called by prom_init to setup the physical memory pmemblock
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* array.
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*/
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extern void prom_meminit(void);
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/* PROM device tree library routines. */
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#define PROM_NULL_COMPONENT ((pcomponent *) 0)
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/* Get sibling component of THIS. */
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extern pcomponent *ArcGetPeer(pcomponent *this);
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/* Get child component of THIS. */
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extern pcomponent *ArcGetChild(pcomponent *this);
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/* This is called at prom_init time to identify the
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* ARC architecture we are running on
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*/
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extern void prom_identify_arch(void);
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/* Environment variable routines. */
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extern PCHAR ArcGetEnvironmentVariable(PCHAR name);
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extern LONG ArcSetEnvironmentVariable(PCHAR name, PCHAR value);
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/* ARCS command line parsing. */
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extern void prom_init_cmdline(void);
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/* File operations. */
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extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
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extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
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/* Misc. routines. */
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extern VOID ArcReboot(VOID) __attribute__((noreturn));
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extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn));
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extern VOID ArcFlushAllCaches(VOID);
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extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
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#endif /* _ASM_SGIALIB_H */
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