diff options
Diffstat (limited to 'usr/src/boot/sys/i386/include/pc/bios.h')
| -rw-r--r-- | usr/src/boot/sys/i386/include/pc/bios.h | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/usr/src/boot/sys/i386/include/pc/bios.h b/usr/src/boot/sys/i386/include/pc/bios.h new file mode 100644 index 0000000000..d1d8caff4a --- /dev/null +++ b/usr/src/boot/sys/i386/include/pc/bios.h @@ -0,0 +1,350 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_PC_BIOS_H_ +#define _MACHINE_PC_BIOS_H_ + +/* + * 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]; +}; + +/* + * 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 */ +} __packed; + +/* + * PnP BIOS return codes + */ +#define PNP_SUCCESS 0x00 +#define PNP_NOT_SET_STATICALLY 0x7f +#define PNP_UNKNOWN_FUNCTION 0x81 +#define PNP_FUNCTION_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) + */ +#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 + +/* + * 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; +} __packed; + +struct PIR_intpin +{ + u_int8_t link; + u_int16_t irqs; +} __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; +} __packed; + +struct PIR_table +{ + struct PIR_header pt_header; + struct PIR_entry pt_entry[0]; +} __packed; + +/* + * Int 15:E820 'SMAP' structure + */ +#define SMAP_SIG 0x534D4150 /* 'SMAP' */ + +#define SMAP_TYPE_MEMORY 1 +#define SMAP_TYPE_RESERVED 2 +#define SMAP_TYPE_ACPI_RECLAIM 3 +#define SMAP_TYPE_ACPI_NVS 4 +#define SMAP_TYPE_ACPI_ERROR 5 + +#define SMAP_XATTR_ENABLED 0x00000001 +#define SMAP_XATTR_NON_VOLATILE 0x00000002 +#define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) + +struct bios_smap { + u_int64_t base; + u_int64_t length; + u_int32_t type; +} __packed; + +/* Structure extended to include extended attribute field in ACPI 3.0. */ +struct bios_smap_xattr { + u_int64_t base; + u_int64_t length; + u_int32_t type; + u_int32_t xattr; +} __packed; + +/* + * System Management BIOS + */ +#define SMBIOS_START 0xf0000 +#define SMBIOS_STEP 0x10 +#define SMBIOS_OFF 0 +#define SMBIOS_LEN 4 +#define SMBIOS_SIG "_SM_" + +struct smbios_eps { + uint8_t anchor_string[4]; /* '_SM_' */ + uint8_t checksum; + uint8_t length; + uint8_t major_version; + uint8_t minor_version; + uint16_t maximum_structure_size; + uint8_t entry_point_revision; + uint8_t formatted_area[5]; + uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ + uint8_t intermediate_checksum; + uint16_t structure_table_length; + uint32_t structure_table_address; + uint16_t number_structures; + uint8_t BCD_revision; +}; + +struct smbios_structure_header { + uint8_t type; + uint8_t length; + uint16_t handle; +}; + +#ifdef _KERNEL +#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) +#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) + +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; + +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; +}; + +/* + * 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 */ +}; + +/* + * Exported lookup results + */ +extern struct bios32_SDentry PCIbios; + +int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); +uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, + int sigofs); +int bios16(struct bios_args *, char *, ...); +int bios16_call(struct bios_regs *, char *); +int bios32(struct bios_regs *, u_int, u_short); +int bios32_SDlookup(struct bios32_SDentry *ent); +void set_bios_selectors(struct bios_segments *, int); + +#endif + +#endif /* _MACHINE_PC_BIOS_H_ */ |