[mirror_ubuntu-bionic-kernel.git] / arch / mips / include / asm / dec / prom.h

/*
 *	include/asm-mips/dec/prom.h
 *
 *	DECstation PROM interface.
 *
 *	Copyright (C) 2002  Maciej W. Rozycki
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 *
 *	Based on arch/mips/dec/prom/prom.h by the Anonymous.
 */
#ifndef _ASM_DEC_PROM_H
#define _ASM_DEC_PROM_H

#include <linux/types.h>

#include <asm/addrspace.h>

/*
 * PMAX/3MAX PROM entry points for DS2100/3100's and DS5000/2xx's.
 * Many of these will work for MIPSen as well!
 */
#define VEC_RESET		(u64 *)CKSEG1ADDR(0x1fc00000)
							/* Prom base address */

#define PMAX_PROM_ENTRY(x)	(VEC_RESET + (x))	/* Prom jump table */

#define PMAX_PROM_HALT		PMAX_PROM_ENTRY(2)	/* valid on MIPSen */
#define PMAX_PROM_AUTOBOOT	PMAX_PROM_ENTRY(5)	/* valid on MIPSen */
#define PMAX_PROM_OPEN		PMAX_PROM_ENTRY(6)
#define PMAX_PROM_READ		PMAX_PROM_ENTRY(7)
#define PMAX_PROM_CLOSE		PMAX_PROM_ENTRY(10)
#define PMAX_PROM_LSEEK		PMAX_PROM_ENTRY(11)
#define PMAX_PROM_GETCHAR	PMAX_PROM_ENTRY(12)
#define PMAX_PROM_PUTCHAR	PMAX_PROM_ENTRY(13)	/* 12 on MIPSen */
#define PMAX_PROM_GETS		PMAX_PROM_ENTRY(15)
#define PMAX_PROM_PRINTF	PMAX_PROM_ENTRY(17)
#define PMAX_PROM_GETENV	PMAX_PROM_ENTRY(33)	/* valid on MIPSen */


/*
 * Magic number indicating REX PROM available on DECstation.  Found in
 * register a2 on transfer of control to program from PROM.
 */
#define REX_PROM_MAGIC		0x30464354

#ifdef CONFIG_64BIT

#define prom_is_rex(magic)	1	/* KN04 and KN05 are REX PROMs.  */

#else /* !CONFIG_64BIT */

#define prom_is_rex(magic)	((magic) == REX_PROM_MAGIC)

#endif /* !CONFIG_64BIT */


/*
 * 3MIN/MAXINE PROM entry points for DS5000/1xx's, DS5000/xx's and
 * DS5000/2x0.
 */
#define REX_PROM_GETBITMAP	0x84/4	/* get mem bitmap */
#define REX_PROM_GETCHAR	0x24/4	/* getch() */
#define REX_PROM_GETENV		0x64/4	/* get env. variable */
#define REX_PROM_GETSYSID	0x80/4	/* get system id */
#define REX_PROM_GETTCINFO	0xa4/4
#define REX_PROM_PRINTF		0x30/4	/* printf() */
#define REX_PROM_SLOTADDR	0x6c/4	/* slotaddr */
#define REX_PROM_BOOTINIT	0x54/4	/* open() */
#define REX_PROM_BOOTREAD	0x58/4	/* read() */
#define REX_PROM_CLEARCACHE	0x7c/4


/*
 * Used by rex_getbitmap().
 */
typedef struct {
	int pagesize;
	unsigned char bitmap[0];
} memmap;


/*
 * Function pointers as read from a PROM's callback vector.
 */
extern int (*__rex_bootinit)(void);
extern int (*__rex_bootread)(void);
extern int (*__rex_getbitmap)(memmap *);
extern unsigned long *(*__rex_slot_address)(int);
extern void *(*__rex_gettcinfo)(void);
extern int (*__rex_getsysid)(void);
extern void (*__rex_clear_cache)(void);

extern int (*__prom_getchar)(void);
extern char *(*__prom_getenv)(char *);
extern int (*__prom_printf)(char *, ...);

extern int (*__pmax_open)(char*, int);
extern int (*__pmax_lseek)(int, long, int);
extern int (*__pmax_read)(int, void *, int);
extern int (*__pmax_close)(int);


#ifdef CONFIG_64BIT

/*
 * On MIPS64 we have to call PROM functions via a helper
 * dispatcher to accommodate ABI incompatibilities.
 */
#define __DEC_PROM_O32(fun, arg) fun arg __asm__(#fun); \
				 __asm__(#fun " = call_o32")

int __DEC_PROM_O32(_rex_bootinit, (int (*)(void)));
int __DEC_PROM_O32(_rex_bootread, (int (*)(void)));
int __DEC_PROM_O32(_rex_getbitmap, (int (*)(memmap *), memmap *));
unsigned long *__DEC_PROM_O32(_rex_slot_address,
			     (unsigned long *(*)(int), int));
void *__DEC_PROM_O32(_rex_gettcinfo, (void *(*)(void)));
int __DEC_PROM_O32(_rex_getsysid, (int (*)(void)));
void __DEC_PROM_O32(_rex_clear_cache, (void (*)(void)));

int __DEC_PROM_O32(_prom_getchar, (int (*)(void)));
char *__DEC_PROM_O32(_prom_getenv, (char *(*)(char *), char *));
int __DEC_PROM_O32(_prom_printf, (int (*)(char *, ...), char *, ...));


#define rex_bootinit()		_rex_bootinit(__rex_bootinit)
#define rex_bootread()		_rex_bootread(__rex_bootread)
#define rex_getbitmap(x)	_rex_getbitmap(__rex_getbitmap, x)
#define rex_slot_address(x)	_rex_slot_address(__rex_slot_address, x)
#define rex_gettcinfo()		_rex_gettcinfo(__rex_gettcinfo)
#define rex_getsysid()		_rex_getsysid(__rex_getsysid)
#define rex_clear_cache()	_rex_clear_cache(__rex_clear_cache)

#define prom_getchar()		_prom_getchar(__prom_getchar)
#define prom_getenv(x)		_prom_getenv(__prom_getenv, x)
#define prom_printf(x...)	_prom_printf(__prom_printf, x)

#else /* !CONFIG_64BIT */

/*
 * On plain MIPS we just call PROM functions directly.
 */
#define rex_bootinit		__rex_bootinit
#define rex_bootread		__rex_bootread
#define rex_getbitmap		__rex_getbitmap
#define rex_slot_address	__rex_slot_address
#define rex_gettcinfo		__rex_gettcinfo
#define rex_getsysid		__rex_getsysid
#define rex_clear_cache		__rex_clear_cache

#define prom_getchar		__prom_getchar
#define prom_getenv		__prom_getenv
#define prom_printf		__prom_printf

#define pmax_open		__pmax_open
#define pmax_lseek		__pmax_lseek
#define pmax_read		__pmax_read
#define pmax_close		__pmax_close

#endif /* !CONFIG_64BIT */


extern void prom_meminit(u32);
extern void prom_identify_arch(u32);
extern void prom_init_cmdline(s32, s32 *, u32);

extern void register_prom_console(void);
extern void unregister_prom_console(void);

#endif /* _ASM_DEC_PROM_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/asm-mips/dec/prom.h
	3	*
	4	* DECstation PROM interface.
	5	*
	6	* Copyright (C) 2002 Maciej W. Rozycki
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version
	11	* 2 of the License, or (at your option) any later version.
	12	*
	13	* Based on arch/mips/dec/prom/prom.h by the Anonymous.
	14	*/
	15	#ifndef _ASM_DEC_PROM_H
	16	#define _ASM_DEC_PROM_H
	17
1da177e4 LT	18	#include <linux/types.h>
	19
	20	#include <asm/addrspace.h>
	21
	22	/*
	23	* PMAX/3MAX PROM entry points for DS2100/3100's and DS5000/2xx's.
	24	* Many of these will work for MIPSen as well!
	25	*/
3bd4c902	26	#define VEC_RESET (u64 *)CKSEG1ADDR(0x1fc00000)
1da177e4 LT	27	/* Prom base address */
	28
	29	#define PMAX_PROM_ENTRY(x) (VEC_RESET + (x)) /* Prom jump table */
	30
	31	#define PMAX_PROM_HALT PMAX_PROM_ENTRY(2) /* valid on MIPSen */
	32	#define PMAX_PROM_AUTOBOOT PMAX_PROM_ENTRY(5) /* valid on MIPSen */
	33	#define PMAX_PROM_OPEN PMAX_PROM_ENTRY(6)
	34	#define PMAX_PROM_READ PMAX_PROM_ENTRY(7)
	35	#define PMAX_PROM_CLOSE PMAX_PROM_ENTRY(10)
	36	#define PMAX_PROM_LSEEK PMAX_PROM_ENTRY(11)
	37	#define PMAX_PROM_GETCHAR PMAX_PROM_ENTRY(12)
	38	#define PMAX_PROM_PUTCHAR PMAX_PROM_ENTRY(13) /* 12 on MIPSen */
	39	#define PMAX_PROM_GETS PMAX_PROM_ENTRY(15)
	40	#define PMAX_PROM_PRINTF PMAX_PROM_ENTRY(17)
	41	#define PMAX_PROM_GETENV PMAX_PROM_ENTRY(33) /* valid on MIPSen */
	42
	43
	44	/*
	45	* Magic number indicating REX PROM available on DECstation. Found in
	46	* register a2 on transfer of control to program from PROM.
	47	*/
	48	#define REX_PROM_MAGIC 0x30464354
	49
875d43e7	50	#ifdef CONFIG_64BIT
1da177e4 LT	51
	52	#define prom_is_rex(magic) 1 /* KN04 and KN05 are REX PROMs. */
	53
875d43e7	54	#else /* !CONFIG_64BIT */
1da177e4 LT	55
	56	#define prom_is_rex(magic) ((magic) == REX_PROM_MAGIC)
	57
875d43e7	58	#endif /* !CONFIG_64BIT */
1da177e4 LT	59
	60
	61	/*
	62	* 3MIN/MAXINE PROM entry points for DS5000/1xx's, DS5000/xx's and
	63	* DS5000/2x0.
	64	*/
	65	#define REX_PROM_GETBITMAP 0x84/4 /* get mem bitmap */
	66	#define REX_PROM_GETCHAR 0x24/4 /* getch() */
	67	#define REX_PROM_GETENV 0x64/4 /* get env. variable */
	68	#define REX_PROM_GETSYSID 0x80/4 /* get system id */
	69	#define REX_PROM_GETTCINFO 0xa4/4
	70	#define REX_PROM_PRINTF 0x30/4 /* printf() */
	71	#define REX_PROM_SLOTADDR 0x6c/4 /* slotaddr */
	72	#define REX_PROM_BOOTINIT 0x54/4 /* open() */
	73	#define REX_PROM_BOOTREAD 0x58/4 /* read() */
	74	#define REX_PROM_CLEARCACHE 0x7c/4
	75
	76
	77	/*
	78	* Used by rex_getbitmap().
	79	*/
	80	typedef struct {
	81	int pagesize;
	82	unsigned char bitmap[0];
	83	} memmap;
	84
	85
	86	/*
	87	* Function pointers as read from a PROM's callback vector.
	88	*/
	89	extern int (*__rex_bootinit)(void);
	90	extern int (*__rex_bootread)(void);
	91	extern int (__rex_getbitmap)(memmap );
	92	extern unsigned long (__rex_slot_address)(int);
	93	extern void (__rex_gettcinfo)(void);
	94	extern int (*__rex_getsysid)(void);
	95	extern void (*__rex_clear_cache)(void);
	96
	97	extern int (*__prom_getchar)(void);
	98	extern char (__prom_getenv)(char *);
	99	extern int (__prom_printf)(char , ...);
	100
	101	extern int (__pmax_open)(char, int);
	102	extern int (*__pmax_lseek)(int, long, int);
	103	extern int (__pmax_read)(int, void , int);
	104	extern int (*__pmax_close)(int);
	105
	106
875d43e7	107	#ifdef CONFIG_64BIT
1da177e4 LT	108
	109	/*
	110	* On MIPS64 we have to call PROM functions via a helper
25985edc	111	* dispatcher to accommodate ABI incompatibilities.
1da177e4	112	*/
a76f9fe1 MR	113	#define __DEC_PROM_O32(fun, arg) fun arg __asm__(#fun); \
	114	__asm__(#fun " = call_o32")
	115
	116	int __DEC_PROM_O32(_rex_bootinit, (int (*)(void)));
	117	int __DEC_PROM_O32(_rex_bootread, (int (*)(void)));
	118	int __DEC_PROM_O32(_rex_getbitmap, (int ()(memmap ), memmap *));
	119	unsigned long *__DEC_PROM_O32(_rex_slot_address,
	120	(unsigned long ()(int), int));
	121	void __DEC_PROM_O32(_rex_gettcinfo, (void (*)(void)));
	122	int __DEC_PROM_O32(_rex_getsysid, (int (*)(void)));
	123	void __DEC_PROM_O32(_rex_clear_cache, (void (*)(void)));
	124
	125	int __DEC_PROM_O32(_prom_getchar, (int (*)(void)));
	126	char __DEC_PROM_O32(_prom_getenv, (char ()(char ), char *));
	127	int __DEC_PROM_O32(_prom_printf, (int ()(char , ...), char *, ...));
1da177e4 LT	128
	129
	130	#define rex_bootinit() _rex_bootinit(__rex_bootinit)
	131	#define rex_bootread() _rex_bootread(__rex_bootread)
	132	#define rex_getbitmap(x) _rex_getbitmap(__rex_getbitmap, x)
	133	#define rex_slot_address(x) _rex_slot_address(__rex_slot_address, x)
	134	#define rex_gettcinfo() _rex_gettcinfo(__rex_gettcinfo)
	135	#define rex_getsysid() _rex_getsysid(__rex_getsysid)
	136	#define rex_clear_cache() _rex_clear_cache(__rex_clear_cache)
	137
	138	#define prom_getchar() _prom_getchar(__prom_getchar)
	139	#define prom_getenv(x) _prom_getenv(__prom_getenv, x)
	140	#define prom_printf(x...) _prom_printf(__prom_printf, x)
	141
875d43e7	142	#else /* !CONFIG_64BIT */
1da177e4 LT	143
	144	/*
	145	* On plain MIPS we just call PROM functions directly.
	146	*/
	147	#define rex_bootinit __rex_bootinit
	148	#define rex_bootread __rex_bootread
	149	#define rex_getbitmap __rex_getbitmap
	150	#define rex_slot_address __rex_slot_address
	151	#define rex_gettcinfo __rex_gettcinfo
	152	#define rex_getsysid __rex_getsysid
	153	#define rex_clear_cache __rex_clear_cache
	154
	155	#define prom_getchar __prom_getchar
	156	#define prom_getenv __prom_getenv
	157	#define prom_printf __prom_printf
	158
	159	#define pmax_open __pmax_open
	160	#define pmax_lseek __pmax_lseek
	161	#define pmax_read __pmax_read
	162	#define pmax_close __pmax_close
	163
875d43e7	164	#endif /* !CONFIG_64BIT */
1da177e4 LT	165
	166
	167	extern void prom_meminit(u32);
	168	extern void prom_identify_arch(u32);
	169	extern void prom_init_cmdline(s32, s32 *, u32);
	170
	171	extern void register_prom_console(void);
	172	extern void unregister_prom_console(void);
	173
	174	#endif /* _ASM_DEC_PROM_H */