diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 2000-08-17 20:15:41 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 2000-08-17 20:15:41 +0000 |
| commit | 1e70b280d824eb2effad54d6a1674d9f5ee4c4bc (patch) | |
| tree | 0af02e86aa98936a133bde55403cff3b7de0b326 /sys/arch/i386/include/biosvar.h | |
| parent | 6a1696496f37d377d2cdfb30b4dc44eed02bba1b (diff) | |
pcibios0 at bios0 flags 0x0000
this is now a real device, which looks in flags for disabling
address, interrupt or bus fixup.
bios0's flags are to disable bios32 and pcibios probing.
since boot_config support editing flags, it's posible
to adjust pcibios functionality in the generic kernel
upon boot time. man is coming.
Diffstat (limited to 'sys/arch/i386/include/biosvar.h')
| -rw-r--r-- | sys/arch/i386/include/biosvar.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/sys/arch/i386/include/biosvar.h b/sys/arch/i386/include/biosvar.h index a80bf2f4a2d..f2d2b5231e0 100644 --- a/sys/arch/i386/include/biosvar.h +++ b/sys/arch/i386/include/biosvar.h @@ -1,4 +1,4 @@ -/* $OpenBSD: biosvar.h,v 1.35 2000/03/26 22:38:33 mickey Exp $ */ +/* $OpenBSD: biosvar.h,v 1.36 2000/08/17 20:15:39 mickey Exp $ */ /* * Copyright (c) 1997-1999 Michael Shalayeff @@ -39,6 +39,10 @@ #define BOOTARG_LEN (NBPG*1) #define BOOTBIOS_ADDR (0x7c00) + /* BIOS configure flags */ +#define BIOSF_BIOS32 0x0001 +#define BIOSF_PCIBIOS 0x0002 + /* BIOS media ID */ #define BIOSM_F320K 0xff /* floppy ds/sd 8 spt */ #define BIOSM_F160K 0xfe /* floppy ss/sd 8 spt */ @@ -64,6 +68,16 @@ * BIOS32 */ typedef +struct bios32_header { + u_int32_t signature; /* 00: signature "_32_" */ + u_int32_t entry; /* 04: entry point */ + u_int8_t rev; /* 08: revision */ + u_int8_t length; /* 09: header length */ + u_int8_t cksum; /* 0a: modulo 256 checksum */ + u_int8_t reserved[5]; +} *bios32_header_t; + +typedef struct bios32_entry_info { paddr_t bei_base; psize_t bei_size; @@ -72,12 +86,18 @@ struct bios32_entry_info { typedef struct bios32_entry { - caddr_t offset; + u_int32_t offset; u_int16_t segment; } __attribute__((__packed__)) *bios32_entry_t; +#define BIOS32_START 0xe0000 +#define BIOS32_SIZE 0x20000 +#define BIOS32_END (BIOS32_START + BIOS32_SIZE - 0x10) + #define BIOS32_MAKESIG(a, b, c, d) \ ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24)) +#define BIOS32_SIGNATURE BIOS32_MAKESIG('_', '3', '2', '_') +#define PCIBIOS_SIGNATURE BIOS32_MAKESIG('$', 'P', 'C', 'I') /* * CTL_BIOS definitions. @@ -212,7 +232,6 @@ void bioscnpollc __P((dev_t, int)); void bios_getopt __P((void)); /* bios32.c */ -void bios32_init __P((void)); int bios32_service __P((u_int32_t, bios32_entry_t, bios32_entry_info_t)); extern u_int bootapiver; |