/*- * Copyright (c) 1997 Michael Smith * Copyright (c) 1998 Jonathan Lemon * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/i386/include/pc/bios.h,v 1.7.2.3 2001/10/21 03:16:56 yokota Exp $ * $DragonFly: src/sys/platform/pc32/include/pc/bios.h,v 1.3 2003/11/08 02:55:19 dillon Exp $ */ /* * Signature structure for the BIOS32 Service Directory header */ struct bios32_SDheader { u_int8_t sig[4]; u_int32_t entry; u_int8_t revision; u_int8_t len; u_int8_t cksum; u_int8_t pad[5]; }; /* * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup * fills in the rest of the details. */ struct bios32_SDentry { union { u_int8_t name[4]; /* service identifier */ u_int32_t id; /* as a 32-bit value */ } ident; u_int32_t base; /* base of service */ u_int32_t len; /* service length */ u_int32_t entry; /* entrypoint offset from base */ vm_offset_t ventry; /* entrypoint in kernel virtual segment */ }; extern int bios32_SDlookup(struct bios32_SDentry *ent); extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, int paralen, int sigofs); #define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase) #define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START) /* * PnP BIOS presence structure */ struct PnPBIOS_table { u_int8_t sig[4]; /* "$PnP */ u_int8_t version; /* should be 0x10 */ u_int8_t len; /* total structure length */ u_int16_t control; /* BIOS feature flags */ u_int8_t cksum; /* checksum */ u_int32_t evflagaddr; /* address of event notificaton flag */ u_int16_t rmentryoffset; /* real-mode entry offset */ u_int16_t rmentryseg; /* segment */ u_int16_t pmentryoffset; /* protected-mode entry offset */ u_int32_t pmentrybase; /* segment base */ u_int32_t oemdevid; /* motherboard EISA ID */ u_int16_t rmbiosseg; /* real-mode BIOS segment */ u_int32_t pmdataseg; /* protected-mode data segment */ } __attribute__ ((packed)); /* * Exported lookup results */ extern struct bios32_SDentry PCIbios; extern struct PnPBIOS_table *PnPBIOStable; struct segment_info { u_int base; u_int limit; }; #define BIOSCODE_FLAG 0x01 #define BIOSDATA_FLAG 0x02 #define BIOSUTIL_FLAG 0x04 #define BIOSARGS_FLAG 0x08 struct bios_segments { struct segment_info code32; /* 32-bit code (mandatory) */ struct segment_info code16; /* 16-bit code */ struct segment_info data; /* 16-bit data */ struct segment_info util; /* 16-bit utility */ struct segment_info args; /* 16-bit args */ }; struct bios_regs { u_int eax; u_int ebx; u_int ecx; u_int edx; u_int esi; u_int edi; }; struct bios_args { u_int entry; /* entry point of routine */ struct bios_regs r; struct bios_segments seg; }; /* * PnP BIOS return codes */ #define PNP_SUCCESS 0x00 #define PNP_NOT_SET_STATICALLY 0x7f #define PNP_UNKNOWN_FUNCTION 0x81 #define PNP_FUNTION_NOT_SUPPORTED 0x82 #define PNP_INVALID_HANDLE 0x83 #define PNP_BAD_PARAMETER 0x84 #define PNP_SET_FAILED 0x85 #define PNP_EVENTS_NOT_PENDING 0x86 #define PNP_SYSTEM_NOT_DOCKED 0x87 #define PNP_NO_ISA_PNP_CARDS 0x88 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b #define PNP_BUFFER_TOO_SMALL 0x8c #define PNP_USE_ESCD_SUPPORT 0x8d #define PNP_MESSAGE_NOT_SUPPORTED 0x8e #define PNP_HARDWARE_ERROR 0x8f /* * DMI return codes */ #define DMI_SUCCESS 0x00 #define DMI_UNKNOWN_FUNCTION 0x81 #define DMI_FUNCTION_NOT_SUPPORTED 0x82 #define DMI_INVALID_HANDLE 0x83 #define DMI_BAD_PARAMETER 0x84 #define DMI_INVALID_SUBFUNCTION 0x85 #define DMI_NO_CHANGE 0x86 #define DMI_ADD_STRUCTURE_FAILED 0x87 #define DMI_READ_ONLY 0x8d #define DMI_LOCK_NOT_SUPPORTED 0x90 #define DMI_CURRENTLY_LOCKED 0x91 #define DMI_INVALID_LOCK 0x92 /* * format specifiers and defines for bios16() * s = short (16 bits) * i = int (32 bits) * p = pointer (converted to seg:offset) * C,D,U = selector (corresponding to code/data/utility segment) * * GetDevNodes(0x01, nodenumptr, nodebuf, control, biossel) * * Required. if *nodenumptr is 0 the system bios will return the * first node. On return *nodenumptr will contain the next node * number or 0xFFh if no more nodes exist. * * Control flag: bit 1: do not get info for how the device will be * configured for the next boot. * bit 0: do not get info on how the device is configured * right now. * bit 0 or bit 1 must be set. 0 is illegal, both are * illegal. * * Returns %ax 0 if success, !0 if an error (bit 7 set) or warning * occured. */ #define PNP_COUNT_DEVNODES "sppD", 0x00 #define PNP_GET_DEVNODE "sppsD", 0x01 #define PNP_SET_DEVNODE "sspsD", 0x02 #define PNP_GET_EVENT "spD", 0x03 #define PNP_SEND_MSG "ssD", 0x04 #define PNP_GET_DOCK_INFO "spD", 0x05 #define PNP_SEL_PRIBOOT "ssiiisspD", 0x07 #define PNP_GET_PRIBOOT "sspppppD", 0x08 #define PNP_SET_RESINFO "spD", 0x09 #define PNP_GET_RESINFO "spD", 0x0A #define PNP_GET_APM_ID "sppD", 0x0B #define PNP_GET_ISA_INFO "spD", 0x40 #define PNP_GET_ECSD_INFO "spppD", 0x41 #define PNP_READ_ESCD "spUD", 0x42 #define PNP_WRITE_ESCD "spUD", 0x43 #define PNP_GET_DMI_INFO "spppppD", 0x50 #define PNP_GET_DMI_STRUCTURE "sppUD", 0x51 #define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52 #define PNP_GET_DMI_CHANGE "spUD" 0x53 #define PNP_DMI_CONTROL "sspsUD" 0x54 #define PNP_GET_GPNV_INFO "sppppD" 0x55 #define PNP_READ_GPNV_DATA "ssppUD" 0x56 #define PNP_WRITE_GPNV_DATA "sspsUD" 0x57 #define PNP_BOOT_CHECK "sp", 0x60 #define PNP_COUNT_IPL "sppp", 0x61 #define PNP_GET_BOOTPRI "spp", 0x62 #define PNP_SET_BOOTPRI "sp", 0x63 #define PNP_GET_LASTBOOT "sp", 0x64 #define PNP_GET_BOOTFIRST "sp", 0x65 #define PNP_SET_BOOTFIRST "sp", 0x66 /* * PCI BIOS functions */ #define PCIBIOS_BIOS_PRESENT 0xb101 #define PCIBIOS_READ_CONFIG_BYTE 0xb108 #define PCIBIOS_READ_CONFIG_WORD 0xb109 #define PCIBIOS_READ_CONFIG_DWORD 0xb10a #define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b #define PCIBIOS_WRITE_CONFIG_WORD 0xb10c #define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d #define PCIBIOS_GET_IRQ_ROUTING 0xb10e #define PCIBIOS_ROUTE_INTERRUPT 0xb10f extern int bios16(struct bios_args *, char *, ...); extern int bios16_call(struct bios_regs *, char *); extern int bios32(struct bios_regs *, u_int, u_short); extern void set_bios_selectors(struct bios_segments *, int); /* * PCI interrupt routing table. * * $PIR in the BIOS segment contains a PIR_table * int 1a:b106 returns PIR_table in buffer at es:(e)di * int 1a:b18e returns PIR_table in buffer at es:(e)di * int 1a:b406 returns es:di pointing to the BIOS PIR_table */ struct PIR_header { int8_t ph_signature[4]; u_int16_t ph_version; u_int16_t ph_length; u_int8_t ph_router_bus; u_int8_t ph_router_dev_fn; u_int16_t ph_pci_irqs; u_int16_t ph_router_vendor; u_int16_t ph_router_device; u_int32_t ph_miniport; u_int8_t ph_res[11]; u_int8_t ph_checksum; } __attribute__ ((packed)); struct PIR_intpin { u_int8_t link; u_int16_t irqs; } __attribute__ ((packed)); struct PIR_entry { u_int8_t pe_bus; u_int8_t pe_res1:3; u_int8_t pe_device:5; struct PIR_intpin pe_intpin[4]; u_int8_t pe_slot; u_int8_t pe_res3; } __attribute__ ((packed)); struct PIR_table { struct PIR_header pt_header; struct PIR_entry pt_entry[0]; } __attribute__ ((packed)); /* * Int 15:E820 'SMAP' structure * * XXX add constants for type */ #define SMAP_SIG 0x534D4150 /* 'SMAP' */ struct bios_smap { u_int64_t base; u_int64_t length; u_int32_t type; } __attribute__ ((packed)); struct bios_oem_signature { char * anchor; /* search anchor string in BIOS memory */ size_t offset; /* offset from anchor (may be negative) */ size_t totlen; /* total length of BIOS string to copy */ } __packed; struct bios_oem_range { u_int from; /* shouldn't be below 0xe0000 */ u_int to; /* shouldn't be above 0xfffff */ } __packed; struct bios_oem { struct bios_oem_range range; struct bios_oem_signature signature[]; } __packed; extern int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);