/*
* pxe.h for Etherboot.
*
* PXE is technically specified only for i386, but there's no reason
* why we shouldn't make the API available for other architectures,
* provided that someone wants to write the shim that allows an
* external program to call pxe_api_call().
*
* We stick with Intel's data structure definitions as far as possible
* on other architectures. Generally the only i386-specific stuff is
* related to addressing: real-mode segment:offset addresses, segment
* selectors, segment descriptors etc. We allow an architecture-
* specific header to define these types, then build the PXE
* structures. Note that we retain the names from the PXE
* specification document (e.g. SEGOFF16_t) even if the architecture
* in question doesn't represent a SEGOFF16_t as anything resembling a
* 16-bit segment:offset address. This is done in order to keep the
* structure definitions as close as possible to those in the spec, to
* minimise confusion.
*
* This file derives from several originals. One is pxe.h from
* FreeBSD. Another is general.h86 from netboot. The original
* copyright notices are reproduced below. This entire file is
* licensed under the GPL; the netboot code is GPL anyway and the
* FreeBSD code allows us to relicense under the GPL provided that we
* retain the FreeBSD copyright notice. This is my understanding,
* anyway. Other portions are my own and therefore Copyright (C) 2004
* Michael Brown <mbrown@fensystems.co.uk>.
*
* 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 any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef PXE_H
#define PXE_H
/* Include architecture-specific PXE data types
*
* May define SEGOFF16_t, SEGDESC_t and SEGSEL_t. These should be
* #defines to underlying * types. May also define
* IS_NULL_SEGOFF16(segoff16), SEGOFF16_TO_PTR(segoff16) and
* PTR_TO_SEGOFF16(ptr,segoff16)
*/
#ifndef PXE_TYPES_H
#include <pxe_types.h>
#endif
#include "errno.h"
/* Defaults in case pxe_types.h did not define a type. These are
* placeholder structures just to make the code compile.
*/
#ifndef SEGOFF16_t
#define SEGOFF16_t void*
#endif
#ifndef IS_NULL_SEGOFF16
#define IS_NULL_SEGOFF16(segoff16) ( (segoff16) == NULL )
#endif
#ifndef SEGOFF16_TO_PTR
#define SEGOFF16_TO_PTR(segoff16) (segoff16)
#endif
#ifndef PTR_TO_SEGOFF16
#define PTR_TO_SEGOFF16(ptr,segoff16) (segoff16) = (ptr);
#endif
#ifndef SEGDESC_t
#define SEGDESC_t void
#endif
#ifndef SEGSEL_t
#define SEGSEL_t void
#endif
/*****************************************************************************
* The following portion of this file is derived from FreeBSD's pxe.h.
* Do not remove the copyright notice below.
*****************************************************************************
*/
/*
* Copyright (c) 2000 Alfred Perlstein <alfred@freebsd.org>
* All rights reserved.
* Copyright (c) 2000 Paul Saab <ps@freebsd.org>
* All rights reserved.
* Copyright (c) 2000 John Baldwin <jhb@freebsd.org>
* 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/boot/i386/libi386/pxe.h,v 1.4.2.2 2000/09/10 02:52:18 ps Exp $
*/
/*
* The typedefs and structures declared in this file
* clearly violate style(9), the reason for this is to conform to the
* typedefs/structure-names used in the Intel literature to avoid confusion.
*
* It's for your own good. :)
*/
/* It seems that intel didn't think about ABI,
* either that or 16bit ABI != 32bit ABI (which seems reasonable)
* I have to thank Intel for the hair loss I incurred trying to figure
* out why PXE was mis-reading structures I was passing it (at least
* from my point of view)
*
* Solution: use gcc's '__attribute__ ((packed))' to correctly align
* structures passed into PXE
* Question: does this really work for PXE's expected ABI?
*/
#ifndef PACKED
#define PACKED __attribute__ ((packed))
#endif
#define S_SIZE(s) s, sizeof(s) - 1
#define IP_STR "%d.%d.%d.%d"
#define IP_ARGS(ip) \
(int)(ip >> 24) & 0xff, (int)(ip >> 16) & 0xff, \
(int)(ip >> 8) & 0xff, (int)ip & 0xff
#define MAC_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_ARGS(mac) \
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]
typedef uint16_t PXENV_EXIT_t;
typedef uint16_t PXENV_STATUS_t;
typedef uint32_t IP4_t;
typedef uint32_t ADDR32_t;
/* It seems as though UDP_PORT_t is in network order, although I can't
* find anything in the spec to back this up. (Michael Brown)
*/
typedef uint16_t UDP_PORT_t;
#define MAC_ADDR_LEN 16
typedef uint8_t MAC_ADDR[MAC_ADDR_LEN];
/* PXENV+ */
typedef struct {
uint8_t Signature[6]; /* 'PXENV+' */
uint16_t Version; /* MSB = major, LSB = minor */
uint8_t Length; /* structure length */
uint8_t Checksum; /* checksum pad */
SEGOFF16_t RMEntry; /* SEG:OFF to PXE entry point */
/* don't use PMOffset and PMSelector (from the 2.1 PXE manual) */
uint32_t PMOffset; /* Protected mode entry */
SEGSEL_t PMSelector; /* Protected mode selector */
SEGSEL_t StackSeg; /* Stack segment address */
uint16_t StackSize; /* Stack segment size (bytes) */
SEGSEL_t BC_CodeSeg; /* BC Code segment address */
uint16_t BC_CodeSize; /* BC Code segment size (bytes) */
SEGSEL_t BC_DataSeg; /* BC Data segment address */
uint16_t BC_DataSize; /* BC Data segment size (bytes) */
SEGSEL_t UNDIDataSeg; /* UNDI Data segment address */
uint16_t UNDIDataSize; /* UNDI Data segment size (bytes) */
SEGSEL_t UNDICodeSeg; /* UNDI Code segment address */
uint16_t UNDICodeSize; /* UNDI Code segment size (bytes) */
SEGOFF16_t PXEPtr; /* SEG:OFF to !PXE struct,
only present when Version > 2.1 */
} PACKED pxenv_t;
/* !PXE */
typedef struct {
uint8_t Signature[4];
uint8_t StructLength;
uint8_t StructCksum;
uint8_t StructRev;
uint8_t reserved_1;
SEGOFF16_t UNDIROMID;
SEGOFF16_t BaseROMID;
SEGOFF16_t EntryPointSP;
SEGOFF16_t EntryPointESP;
SEGOFF16_t StatusCallout;
uint8_t reserved_2;
uint8_t SegDescCn;
SEGSEL_t FirstSelector;
SEGDESC_t Stack;
SEGDESC_t UNDIData;
SEGDESC_t UNDICode;
SEGDESC_t UNDICodeWrite;
SEGDESC_t BC_Data;
SEGDESC_t BC_Code;
SEGDESC_t BC_CodeWrite;
} PACKED pxe_t;
#define PXENV_START_UNDI 0x0000
typedef struct {
PXENV_STATUS_t Status;
uint16_t ax;
uint16_t bx;
uint16_t dx;
uint16_t di;
uint16_t es;
} PACKED t_PXENV_START_UNDI;
#define PXENV_UNDI_STARTUP 0x0001
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_STARTUP;
#define PXENV_UNDI_CLEANUP 0x0002
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_CLEANUP;
#define PXENV_UNDI_INITIALIZE 0x0003
typedef struct {
PXENV_STATUS_t Status;
ADDR32_t ProtocolIni; /* Phys addr of a copy of the driver module */
uint8_t reserved[8];
} PACKED t_PXENV_UNDI_INITIALIZE;
#define MAXNUM_MCADDR 8
typedef struct {
uint16_t MCastAddrCount;
MAC_ADDR McastAddr[MAXNUM_MCADDR];
} PACKED t_PXENV_UNDI_MCAST_ADDRESS;
#define PXENV_UNDI_RESET_ADAPTER 0x0004
typedef struct {
PXENV_STATUS_t Status;
t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED t_PXENV_UNDI_RESET_ADAPTER;
#define PXENV_UNDI_SHUTDOWN 0x0005
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_SHUTDOWN;
#define PXENV_UNDI_OPEN 0x0006
typedef struct {
PXENV_STATUS_t Status;
uint16_t OpenFlag;
uint16_t PktFilter;
# define FLTR_DIRECTED 0x0001
# define FLTR_BRDCST 0x0002
# define FLTR_PRMSCS 0x0003
# define FLTR_SRC_RTG 0x0004
t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED t_PXENV_UNDI_OPEN;
#define PXENV_UNDI_CLOSE 0x0007
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_CLOSE;
#define PXENV_UNDI_TRANSMIT 0x0008
typedef struct {
PXENV_STATUS_t Status;
uint8_t Protocol;
# define P_UNKNOWN 0
# define P_IP 1
# define P_ARP 2
# define P_RARP 3
uint8_t XmitFlag;
# define XMT_DESTADDR 0x0000
# define XMT_BROADCAST 0x0001
SEGOFF16_t DestAddr;
SEGOFF16_t TBD;
uint32_t Reserved[2];
} PACKED t_PXENV_UNDI_TRANSMIT;
#define MAX_DATA_BLKS 8
typedef struct {
uint16_t ImmedLength;
SEGOFF16_t Xmit;
uint16_t DataBlkCount;
struct DataBlk {
uint8_t TDPtrType;
uint8_t TDRsvdByte;
uint16_t TDDataLen;
SEGOFF16_t TDDataPtr;
} DataBlock[MAX_DATA_BLKS];
} PACKED t_PXENV_UNDI_TBD;
#define PXENV_UNDI_SET_MCAST_ADDRESS 0x0009
typedef struct {
PXENV_STATUS_t Status;
t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED t_PXENV_UNDI_SET_MCAST_ADDRESS;
#define PXENV_UNDI_SET_STATION_ADDRESS 0x000A
typedef struct {
PXENV_STATUS_t Status;
MAC_ADDR StationAddress; /* Temp MAC addres to use */
} PACKED t_PXENV_UNDI_SET_STATION_ADDRESS;
#define PXENV_UNDI_SET_PACKET_FILTER 0x000B
typedef struct {
PXENV_STATUS_t Status;
uint8_t filter; /* see UNDI_OPEN (0x0006) */
} PACKED t_PXENV_UNDI_SET_PACKET_FILTER;
#define PXENV_UNDI_GET_INFORMATION 0x000C
typedef struct {
PXENV_STATUS_t Status;
uint16_t BaseIo; /* Adapter base I/O address */
uint16_t IntNumber; /* Adapter IRQ number */
uint16_t MaxTranUnit; /* Adapter maximum transmit unit */
uint16_t HwType; /* Type of protocol at the hardware addr */
# define ETHER_TYPE 1
# define EXP_ETHER_TYPE 2
# define IEEE_TYPE 6
# define ARCNET_TYPE 7
uint16_t HwAddrLen; /* Length of hardware address */
MAC_ADDR CurrentNodeAddress; /* Current hardware address */
MAC_ADDR PermNodeAddress; /* Permanent hardware address */
SEGSEL_t ROMAddress; /* Real mode ROM segment address */
uint16_t RxBufCt; /* Receive queue length */
uint16_t TxBufCt; /* Transmit queue length */
} PACKED t_PXENV_UNDI_GET_INFORMATION;
#define PXENV_UNDI_GET_STATISTICS 0x000D
typedef struct {
PXENV_STATUS_t Status;
uint32_t XmitGoodFrames; /* Number of successful transmissions */
uint32_t RcvGoodFrames; /* Number of good frames received */
uint32_t RcvCRCErrors; /* Number of frames with CRC errors */
uint32_t RcvResourceErrors; /* Number of frames dropped */
} PACKED t_PXENV_UNDI_GET_STATISTICS;
#define PXENV_UNDI_CLEAR_STATISTICS 0x000E
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_CLEAR_STATISTICS;
#define PXENV_UNDI_INITIATE_DIAGS 0x000F
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_INITIATE_DIAGS;
#define PXENV_UNDI_FORCE_INTERRUPT 0x0010
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UNDI_FORCE_INTERRUPT;
#define PXENV_UNDI_GET_MCAST_ADDRESS 0x0011
typedef struct {
PXENV_STATUS_t Status;
IP4_t InetAddr; /* IP mulicast address */
MAC_ADDR MediaAddr; /* MAC multicast address */
} PACKED t_PXENV_UNDI_GET_MCAST_ADDRESS;
#define PXENV_UNDI_GET_NIC_TYPE 0x0012
typedef struct {
PXENV_STATUS_t Status;
uint8_t NicType; /* Type of NIC */
# define PCI_NIC 2
# define PnP_NIC 3
# define CardBus_NIC 4
union {
struct {
uint16_t Vendor_ID;
uint16_t Dev_ID;
uint8_t Base_Class;
uint8_t Sub_Class;
uint8_t Prog_Intf;
uint8_t Rev;
uint16_t BusDevFunc;
uint16_t SubVendor_ID;
uint16_t SubDevice_ID;
} pci, cardbus;
struct {
uint32_t EISA_Dev_ID;
uint8_t Base_Class;
uint8_t Sub_Class;
uint8_t Prog_Intf;
uint16_t CardSelNum;
} pnp;
} info;
} PACKED t_PXENV_UNDI_GET_NIC_TYPE;
#define PXENV_UNDI_GET_IFACE_INFO 0x0013
typedef struct {
PXENV_STATUS_t Status;
uint8_t IfaceType[16]; /* Name of MAC type in ASCII. */
uint32_t LinkSpeed; /* Defined in NDIS 2.0 spec */
uint32_t ServiceFlags; /* Defined in NDIS 2.0 spec */
uint32_t Reserved[4]; /* must be 0 */
} PACKED t_PXENV_UNDI_GET_IFACE_INFO;
#define PXENV_UNDI_ISR 0x0014
typedef struct {
PXENV_STATUS_t Status;
uint16_t FuncFlag; /* PXENV_UNDI_ISR_OUT_xxx */
uint16_t BufferLength; /* Length of Frame */
uint16_t FrameLength; /* Total length of reciever frame */
uint16_t FrameHeaderLength; /* Length of the media header in Frame */
SEGOFF16_t Frame; /* receive buffer */
uint8_t ProtType; /* Protocol type */
uint8_t PktType; /* Packet Type */
# define PXENV_UNDI_ISR_IN_START 1
# define PXENV_UNDI_ISR_IN_PROCESS 2
# define PXENV_UNDI_ISR_IN_GET_NEXT 3
/* one of these will be returned for PXENV_UNDI_ISR_IN_START */
# define PXENV_UNDI_ISR_OUT_OURS 0
# define PXENV_UNDI_ISR_OUT_NOT_OURS 1
/*
* one of these will bre returnd for PXEND_UNDI_ISR_IN_PROCESS
* and PXENV_UNDI_ISR_IN_GET_NEXT
*/
# define PXENV_UNDI_ISR_OUT_DONE 0
# define PXENV_UNDI_ISR_OUT_TRANSMIT 2
# define PXENV_UNDI_ISR_OUT_RECEIVE 3
# define PXENV_UNDI_ISR_OUT_BUSY 4
} PACKED t_PXENV_UNDI_ISR;
#define PXENV_STOP_UNDI 0x0015
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_STOP_UNDI;
#define PXENV_TFTP_OPEN 0x0020
typedef struct {
PXENV_STATUS_t Status;
IP4_t ServerIPAddress;
IP4_t GatewayIPAddress;
uint8_t FileName[128];
UDP_PORT_t TFTPPort;
uint16_t PacketSize;
} PACKED t_PXENV_TFTP_OPEN;
#define PXENV_TFTP_CLOSE 0x0021
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_TFTP_CLOSE;
#define PXENV_TFTP_READ 0x0022
typedef struct {
PXENV_STATUS_t Status;
uint16_t PacketNumber;
uint16_t BufferSize;
SEGOFF16_t Buffer;
} PACKED t_PXENV_TFTP_READ;
#define PXENV_TFTP_READ_FILE 0x0023
typedef struct {
PXENV_STATUS_t Status;
uint8_t FileName[128];
uint32_t BufferSize;
ADDR32_t Buffer;
IP4_t ServerIPAddress;
IP4_t GatewayIPAdress;
IP4_t McastIPAdress;
UDP_PORT_t TFTPClntPort;
UDP_PORT_t TFTPSrvPort;
uint16_t TFTPOpenTimeOut;
uint16_t TFTPReopenDelay;
} PACKED t_PXENV_TFTP_READ_FILE;
#define PXENV_TFTP_GET_FSIZE 0x0025
typedef struct {
PXENV_STATUS_t Status;
IP4_t ServerIPAddress;
IP4_t GatewayIPAdress;
uint8_t FileName[128];
uint32_t FileSize;
} PACKED t_PXENV_TFTP_GET_FSIZE;
#define PXENV_UDP_OPEN 0x0030
typedef struct {
PXENV_STATUS_t Status;
IP4_t src_ip; /* IP address of this station */
} PACKED t_PXENV_UDP_OPEN;
#define PXENV_UDP_CLOSE 0x0031
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_UDP_CLOSE;
#define PXENV_UDP_READ 0x0032
typedef struct {
PXENV_STATUS_t Status;
IP4_t src_ip; /* IP of sender */
IP4_t dest_ip; /* Only accept packets sent to this IP */
UDP_PORT_t s_port; /* UDP source port of sender */
UDP_PORT_t d_port; /* Only accept packets sent to this port */
uint16_t buffer_size; /* Size of the packet buffer */
SEGOFF16_t buffer; /* SEG:OFF to the packet buffer */
} PACKED t_PXENV_UDP_READ;
#define PXENV_UDP_WRITE 0x0033
typedef struct {
PXENV_STATUS_t Status;
IP4_t ip; /* dest ip addr */
IP4_t gw; /* ip gateway */
UDP_PORT_t src_port; /* source udp port */
UDP_PORT_t dst_port; /* destination udp port */
uint16_t buffer_size; /* Size of the packet buffer */
SEGOFF16_t buffer; /* SEG:OFF to the packet buffer */
} PACKED t_PXENV_UDP_WRITE;
#define PXENV_UNLOAD_STACK 0x0070
typedef struct {
PXENV_STATUS_t Status;
uint8_t reserved[10];
} PACKED t_PXENV_UNLOAD_STACK;
#define PXENV_GET_CACHED_INFO 0x0071
typedef struct {
PXENV_STATUS_t Status;
uint16_t PacketType; /* type (defined right here) */
# define PXENV_PACKET_TYPE_DHCP_DISCOVER 1
# define PXENV_PACKET_TYPE_DHCP_ACK 2
# define PXENV_PACKET_TYPE_BINL_REPLY 3
uint16_t BufferSize; /* max to copy, leave at 0 for pointer */
SEGOFF16_t Buffer; /* copy to, leave at 0 for pointer */
uint16_t BufferLimit; /* max size of buffer in BC dataseg ? */
} PACKED t_PXENV_GET_CACHED_INFO;
/* structure filled in by PXENV_GET_CACHED_INFO
* (how we determine which IP we downloaded the initial bootstrap from)
* words can't describe...
*/
typedef struct {
uint8_t opcode;
# define BOOTP_REQ 1
# define BOOTP_REP 2
uint8_t Hardware; /* hardware type */
uint8_t Hardlen; /* hardware addr len */
uint8_t Gatehops; /* zero it */
uint32_t ident; /* random number chosen by client */
uint16_t seconds; /* seconds since did initial bootstrap */
uint16_t Flags; /* seconds since did initial bootstrap */
# define BOOTP_BCAST 0x8000 /* ? */
IP4_t cip; /* Client IP */
IP4_t yip; /* Your IP */
IP4_t sip; /* IP to use for next boot stage */
IP4_t gip; /* Relay IP ? */
MAC_ADDR CAddr; /* Client hardware address */
uint8_t Sname[64]; /* Server's hostname (Optional) */
uint8_t bootfile[128]; /* boot filename */
union {
# if 1
# define BOOTP_DHCPVEND 1024 /* DHCP extended vendor field size */
# else
# define BOOTP_DHCPVEND 312 /* DHCP standard vendor field size */
# endif
uint8_t d[BOOTP_DHCPVEND]; /* raw array of vendor/dhcp options */
struct {
uint8_t magic[4]; /* DHCP magic cookie */
# ifndef VM_RFC1048
# define VM_RFC1048 0x63825363L /* ? */
# endif
uint32_t flags; /* bootp flags/opcodes */
uint8_t pad[56]; /* I don't think intel knows what a
union does... */
} v;
} vendor;
} PACKED BOOTPLAYER;
#define PXENV_RESTART_TFTP 0x0073
#define t_PXENV_RESTART_TFTP t_PXENV_TFTP_READ_FILE
#define PXENV_START_BASE 0x0075
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_START_BASE;
#define PXENV_STOP_BASE 0x0076
typedef struct {
PXENV_STATUS_t Status;
} PACKED t_PXENV_STOP_BASE;
/*****************************************************************************
* The following portion of this file is derived from netboot's
* general.h86. Do not remove the copyright notice below.
*****************************************************************************
*/
/*
* general.h86 - Common PXE definitions
*
* Copyright (C) 2003 Gero Kuhlmann <gero@gkminix.han.de>
*
* 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
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
/*
**************************************************************************
*
* This file contains the Preboot API common definitions as
* per Intels PXE specification version 2.0.
*
* Updated to comply with PXE specification version 2.1 by Michael Brown.
*
**************************************************************************
*
* Result codes returned in AX by a PXENV API service:
*/
#define PXENV_EXIT_SUCCESS 0x0000
#define PXENV_EXIT_FAILURE 0x0001
/*
**************************************************************************
*
* CPU types (defined in WfM 1.1):
*/
#define PXENV_CPU_X86 0
#define PXENV_CPU_ALPHA 1
#define PXENV_CPU_PPC 2
/*
**************************************************************************
*
* Bus types (defined in WfM 1.1):
*/
#define PXENV_BUS_ISA 0
#define PXENV_BUS_EISA 1
#define PXENV_BUS_MCA 2
#define PXENV_BUS_PCI 3
#define PXENV_BUS_VESA 4
#define PXENV_BUS_PCMCIA 5
/*****************************************************************************
* The remainder of this file is original to Etherboot.
*****************************************************************************
*/
/* Dummy PXE opcode for the loader routine. We do this to make the
* API simpler
*/
#define PXENV_UNDI_LOADER 0x104d /* 'load' */
typedef struct undi_loader {
union {
struct {
PXENV_STATUS_t Status;
uint16_t ax;
uint16_t bx;
uint16_t dx;
uint16_t di;
uint16_t es;
};
t_PXENV_START_UNDI start_undi;
};
uint16_t undi_ds;
uint16_t undi_cs;
SEGOFF16_t pxe_ptr;
SEGOFF16_t pxenv_ptr;
} PACKED undi_loader_t;
/* Union used for PXE API calls; we don't know the type of the
* structure until we interpret the opcode. Also, Status is available
* in the same location for any opcode, and it's convenient to have
* non-specific access to it.
*/
typedef union {
PXENV_STATUS_t Status; /* Make it easy to read status
for any operation */
t_PXENV_START_UNDI start_undi;
t_PXENV_UNDI_STARTUP undi_startup;
t_PXENV_UNDI_CLEANUP undi_cleanup;
t_PXENV_UNDI_INITIALIZE undi_initialize;
t_PXENV_UNDI_RESET_ADAPTER undi_reset_adapter;
t_PXENV_UNDI_SHUTDOWN undi_shutdown;
t_PXENV_UNDI_OPEN undi_open;
t_PXENV_UNDI_CLOSE undi_close;
t_PXENV_UNDI_TRANSMIT undi_transmit;
t_PXENV_UNDI_SET_MCAST_ADDRESS undi_set_mcast_address;
t_PXENV_UNDI_SET_STATION_ADDRESS undi_set_station_address;
t_PXENV_UNDI_SET_PACKET_FILTER undi_set_packet_filter;
t_PXENV_UNDI_GET_INFORMATION undi_get_information;
t_PXENV_UNDI_GET_STATISTICS undi_get_statistics;
t_PXENV_UNDI_CLEAR_STATISTICS undi_clear_statistics;
t_PXENV_UNDI_INITIATE_DIAGS undi_initiate_diags;
t_PXENV_UNDI_FORCE_INTERRUPT undi_force_interrupt;
t_PXENV_UNDI_GET_MCAST_ADDRESS undi_get_mcast_address;
t_PXENV_UNDI_GET_NIC_TYPE undi_get_nic_type;
t_PXENV_UNDI_GET_IFACE_INFO undi_get_iface_info;
t_PXENV_UNDI_ISR undi_isr;
t_PXENV_STOP_UNDI stop_undi;
t_PXENV_TFTP_OPEN tftp_open;
t_PXENV_TFTP_CLOSE tftp_close;
t_PXENV_TFTP_READ tftp_read;
t_PXENV_TFTP_READ_FILE tftp_read_file;
t_PXENV_TFTP_GET_FSIZE tftp_get_fsize;
t_PXENV_UDP_OPEN udp_open;
t_PXENV_UDP_CLOSE udp_close;
t_PXENV_UDP_READ udp_read;
t_PXENV_UDP_WRITE udp_write;
t_PXENV_UNLOAD_STACK unload_stack;
t_PXENV_GET_CACHED_INFO get_cached_info;
t_PXENV_RESTART_TFTP restart_tftp;
t_PXENV_START_BASE start_base;
t_PXENV_STOP_BASE stop_base;
undi_loader_t loader;
} t_PXENV_ANY;
/* PXE stack status indicator. See pxe_export.c for further
* explanation.
*/
typedef enum {
CAN_UNLOAD = 0,
MIDWAY,
READY
} pxe_stack_state_t;
/* Data structures installed as part of a PXE stack. Architectures
* will have extra information to append to the end of this.
*/
#define PXE_TFTP_MAGIC_COOKIE ( ( 'P'<<24 ) | ( 'x'<<16 ) | ( 'T'<<8 ) | 'f' )
typedef struct {
pxe_t pxe __attribute__ ((aligned(16)));
pxenv_t pxenv __attribute__ ((aligned(16)));
pxe_stack_state_t state;
union {
BOOTPLAYER cached_info;
char packet[ETH_FRAME_LEN];
struct {
uint32_t magic_cookie;
unsigned int len;
int eof;
char data[TFTP_MAX_PACKET];
} tftpdata;
struct {
char *buffer;
uint32_t offset;
uint32_t bufferlen;
} readfile;
};
struct {} arch_data __attribute__ ((aligned(16)));
} pxe_stack_t;
#endif /* PXE_H */
