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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [asm-mips/] [dec/] [prom.h] - Rev 1780
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/* * 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 *)KSEG1ADDR(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_MIPS64 #define prom_is_rex(magic) 1 /* KN04 and KN05 are REX PROMs. */ #else /* !CONFIG_MIPS64 */ #define prom_is_rex(magic) ((magic) == REX_PROM_MAGIC) #endif /* !CONFIG_MIPS64 */ /* * 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_MIPS64 /* * On MIPS64 we have to call PROM functions via a helper * dispatcher to accomodate ABI incompatibilities. */ #define __DEC_PROM_O32 __attribute__((alias("call_o32"))) int _rex_bootinit(int (*)(void)) __DEC_PROM_O32; int _rex_bootread(int (*)(void)) __DEC_PROM_O32; int _rex_getbitmap(int (*)(memmap *), memmap *) __DEC_PROM_O32; unsigned long *_rex_slot_address(unsigned long *(*)(int), int) __DEC_PROM_O32; void *_rex_gettcinfo(void *(*)(void)) __DEC_PROM_O32; int _rex_getsysid(int (*)(void)) __DEC_PROM_O32; void _rex_clear_cache(void (*)(void)) __DEC_PROM_O32; int _prom_getchar(int (*)(void)) __DEC_PROM_O32; char *_prom_getenv(char *(*)(char *), char *) __DEC_PROM_O32; int _prom_printf(int (*)(char *, ...), char *, ...) __DEC_PROM_O32; #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_MIPS64 */ /* * 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_MIPS64 */ extern void prom_meminit(u32); extern void prom_identify_arch(u32); extern void prom_init_cmdline(s32, s32 *, u32); #endif /* __ASM_DEC_PROM_H */
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