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170 lines
5.1 KiB
170 lines
5.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* include/asm-mips/dec/prom.h |
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* |
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* DECstation PROM interface. |
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* |
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* Copyright (C) 2002 Maciej W. Rozycki |
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* |
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* Based on arch/mips/dec/prom/prom.h by the Anonymous. |
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*/ |
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#ifndef _ASM_DEC_PROM_H |
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#define _ASM_DEC_PROM_H |
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#include <linux/types.h> |
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#include <asm/addrspace.h> |
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/* |
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* PMAX/3MAX PROM entry points for DS2100/3100's and DS5000/2xx's. |
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* Many of these will work for MIPSen as well! |
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*/ |
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#define VEC_RESET (u64 *)CKSEG1ADDR(0x1fc00000) |
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/* Prom base address */ |
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#define PMAX_PROM_ENTRY(x) (VEC_RESET + (x)) /* Prom jump table */ |
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#define PMAX_PROM_HALT PMAX_PROM_ENTRY(2) /* valid on MIPSen */ |
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#define PMAX_PROM_AUTOBOOT PMAX_PROM_ENTRY(5) /* valid on MIPSen */ |
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#define PMAX_PROM_OPEN PMAX_PROM_ENTRY(6) |
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#define PMAX_PROM_READ PMAX_PROM_ENTRY(7) |
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#define PMAX_PROM_CLOSE PMAX_PROM_ENTRY(10) |
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#define PMAX_PROM_LSEEK PMAX_PROM_ENTRY(11) |
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#define PMAX_PROM_GETCHAR PMAX_PROM_ENTRY(12) |
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#define PMAX_PROM_PUTCHAR PMAX_PROM_ENTRY(13) /* 12 on MIPSen */ |
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#define PMAX_PROM_GETS PMAX_PROM_ENTRY(15) |
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#define PMAX_PROM_PRINTF PMAX_PROM_ENTRY(17) |
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#define PMAX_PROM_GETENV PMAX_PROM_ENTRY(33) /* valid on MIPSen */ |
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/* |
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* Magic number indicating REX PROM available on DECstation. Found in |
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* register a2 on transfer of control to program from PROM. |
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*/ |
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#define REX_PROM_MAGIC 0x30464354 |
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#ifdef CONFIG_64BIT |
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#define prom_is_rex(magic) 1 /* KN04 and KN05 are REX PROMs. */ |
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#else /* !CONFIG_64BIT */ |
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#define prom_is_rex(magic) ((magic) == REX_PROM_MAGIC) |
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#endif /* !CONFIG_64BIT */ |
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/* |
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* 3MIN/MAXINE PROM entry points for DS5000/1xx's, DS5000/xx's and |
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* DS5000/2x0. |
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*/ |
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#define REX_PROM_GETBITMAP 0x84/4 /* get mem bitmap */ |
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#define REX_PROM_GETCHAR 0x24/4 /* getch() */ |
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#define REX_PROM_GETENV 0x64/4 /* get env. variable */ |
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#define REX_PROM_GETSYSID 0x80/4 /* get system id */ |
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#define REX_PROM_GETTCINFO 0xa4/4 |
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#define REX_PROM_PRINTF 0x30/4 /* printf() */ |
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#define REX_PROM_SLOTADDR 0x6c/4 /* slotaddr */ |
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#define REX_PROM_BOOTINIT 0x54/4 /* open() */ |
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#define REX_PROM_BOOTREAD 0x58/4 /* read() */ |
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#define REX_PROM_CLEARCACHE 0x7c/4 |
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/* |
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* Used by rex_getbitmap(). |
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*/ |
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typedef struct { |
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int pagesize; |
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unsigned char bitmap[0]; |
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} memmap; |
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/* |
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* Function pointers as read from a PROM's callback vector. |
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*/ |
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extern int (*__rex_bootinit)(void); |
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extern int (*__rex_bootread)(void); |
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extern int (*__rex_getbitmap)(memmap *); |
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extern unsigned long *(*__rex_slot_address)(int); |
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extern void *(*__rex_gettcinfo)(void); |
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extern int (*__rex_getsysid)(void); |
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extern void (*__rex_clear_cache)(void); |
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extern int (*__prom_getchar)(void); |
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extern char *(*__prom_getenv)(char *); |
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extern int (*__prom_printf)(char *, ...); |
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extern int (*__pmax_open)(char*, int); |
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extern int (*__pmax_lseek)(int, long, int); |
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extern int (*__pmax_read)(int, void *, int); |
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extern int (*__pmax_close)(int); |
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#ifdef CONFIG_64BIT |
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/* |
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* On MIPS64 we have to call PROM functions via a helper |
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* dispatcher to accommodate ABI incompatibilities. |
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*/ |
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#define __DEC_PROM_O32(fun, arg) fun arg __asm__(#fun); \ |
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__asm__(#fun " = call_o32") |
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int __DEC_PROM_O32(_rex_bootinit, (int (*)(void), void *)); |
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int __DEC_PROM_O32(_rex_bootread, (int (*)(void), void *)); |
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int __DEC_PROM_O32(_rex_getbitmap, (int (*)(memmap *), void *, memmap *)); |
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unsigned long *__DEC_PROM_O32(_rex_slot_address, |
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(unsigned long *(*)(int), void *, int)); |
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void *__DEC_PROM_O32(_rex_gettcinfo, (void *(*)(void), void *)); |
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int __DEC_PROM_O32(_rex_getsysid, (int (*)(void), void *)); |
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void __DEC_PROM_O32(_rex_clear_cache, (void (*)(void), void *)); |
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int __DEC_PROM_O32(_prom_getchar, (int (*)(void), void *)); |
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char *__DEC_PROM_O32(_prom_getenv, (char *(*)(char *), void *, char *)); |
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int __DEC_PROM_O32(_prom_printf, (int (*)(char *, ...), void *, char *, ...)); |
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#define rex_bootinit() _rex_bootinit(__rex_bootinit, NULL) |
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#define rex_bootread() _rex_bootread(__rex_bootread, NULL) |
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#define rex_getbitmap(x) _rex_getbitmap(__rex_getbitmap, NULL, x) |
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#define rex_slot_address(x) _rex_slot_address(__rex_slot_address, NULL, x) |
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#define rex_gettcinfo() _rex_gettcinfo(__rex_gettcinfo, NULL) |
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#define rex_getsysid() _rex_getsysid(__rex_getsysid, NULL) |
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#define rex_clear_cache() _rex_clear_cache(__rex_clear_cache, NULL) |
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#define prom_getchar() _prom_getchar(__prom_getchar, NULL) |
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#define prom_getenv(x) _prom_getenv(__prom_getenv, NULL, x) |
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#define prom_printf(x...) _prom_printf(__prom_printf, NULL, x) |
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#else /* !CONFIG_64BIT */ |
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/* |
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* On plain MIPS we just call PROM functions directly. |
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*/ |
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#define rex_bootinit __rex_bootinit |
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#define rex_bootread __rex_bootread |
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#define rex_getbitmap __rex_getbitmap |
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#define rex_slot_address __rex_slot_address |
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#define rex_gettcinfo __rex_gettcinfo |
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#define rex_getsysid __rex_getsysid |
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#define rex_clear_cache __rex_clear_cache |
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#define prom_getchar __prom_getchar |
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#define prom_getenv __prom_getenv |
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#define prom_printf __prom_printf |
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#define pmax_open __pmax_open |
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#define pmax_lseek __pmax_lseek |
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#define pmax_read __pmax_read |
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#define pmax_close __pmax_close |
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#endif /* !CONFIG_64BIT */ |
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extern void prom_meminit(u32); |
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extern void prom_identify_arch(u32); |
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extern void prom_init_cmdline(s32, s32 *, u32); |
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extern void register_prom_console(void); |
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extern void unregister_prom_console(void); |
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#endif /* _ASM_DEC_PROM_H */
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