config

linux下从网卡远程启动

#
# Config for Etherboot/32
#
# Do not delete the tag OptionDescription and /OptionDescription
# It is used to automatically generate the documentation.
#
# @OptionDescription@
#	User interaction options:
#
#	-DASK_BOOT=n
#			Ask "Boot from (N)etwork ... or (Q)uit? " 
#			at startup, timeout after n seconds (0 = no timeout).
#			If unset or negative, don't ask and boot immediately
#			using the default.
#	-DBOOT_FIRST
#	-DBOOT_SECOND
#	-DBOOT_THIRD
#			On timeout or Return key from previous
#			question, selects the order to try to boot from
#			various devices.
#			(alternatives: BOOT_NIC, BOOT_DISK,
#			 BOOT_FLOPPY, BOOT_NOTHING)
#			See etherboot.h for prompt and answer strings.
#	-DBOOT_INDEX	The device to boot from 0 == any device.
#			1 == The first nic found.
#			2 == The second nic found
#			...
#			BOOT_INDEX only applies to the BOOT_FIRST.  BOOT_SECOND 
#			and BOOT_THIRD search through all of the boot devices.
#	-DBAR_PROGRESS
#			Use rotating bar instead of sequential dots
#			to indicate an IP packet transmitted.
#
#	Boot order options:
#
#	-DBOOT_CLASS_FIRST
#	-DBOOT_CLASS_SECOND
#	-DBOOT_CLASS_THIRD
#			Select the priority of the boot classes
#			Valid values are:
#				BOOT_NIC
#				BOOT_DISK
#				BOOT_FLOPPY
#
#	Boot autoconfiguration protocol options:
#
#	-DALTERNATE_DHCP_PORTS_1067_1068
#			Use ports 1067 and 1068 for DHCP instead of 67 and 68.
#			As these ports are non-standard, you need to configure
#			your DHCP server to use them. This option gets around
#			existing DHCP servers which cannot be touched, for
#			one reason or another, at the cost of non-standard
#			boot images.
#	-DNO_DHCP_SUPPORT
#			Use BOOTP instead of DHCP.
#	-DRARP_NOT_BOOTP
#			Use RARP instead of BOOTP/DHCP.
#	-DREQUIRE_VCI_ETHERBOOT
#			Require an encapsulated Vendor Class Identifier
#			of "Etherboot" in the DHCP reply
#			Requires DHCP support.
#	-DALLOW_ONLY_ENCAPSULATED
#			Ignore Etherboot-specific options that are not within
#			the Etherboot encapsulated options field.  This option
#			should be enabled unless you have a legacy DHCP server
#			configuration from the bad old days before the use of
#			encapsulated Etherboot options.
#	-DDEFAULT_BOOTFILE=\"default_bootfile_name\"
#			Define a default bootfile for the case where your DHCP
#			server does not provide the information.  Example:
#			  -DDEFAULT_BOOTFILE="tftp:///tftpboot/kernel"
#			If you do not specify this option, then DHCP offers that
#			do not specify bootfiles will be ignored.
#
#	NIC tuning parameters:
#
#	-DALLMULTI
#			Turns on multicast reception in the NICs.
#
#	Boot tuning parameters:
#
#	-DCONGESTED
#			Turns on packet retransmission.	 Use it on a
#			congested network, where the normal operation
#			can't boot the image.
#	-DBACKOFF_LIMIT
#			Sets the maximum RFC951 backoff exponent to n.
#			Do not set this unreasonably low, because on networks
#			with many machines they can saturate the link
#			(the delay corresponding to the exponent is a random
#			time in the range 0..3.5*2^n seconds).	Use 5 for a
#			VERY small network (max. 2 minutes delay), 7 for a
#			medium sized network (max. 7.5 minutes delay) or 10
#			for a really huge network with many clients, frequent
#			congestions (max. 1  hour delay).  On average the
#			delay time will be half the maximum value.  If in
#			doubt about the consequences, use a larger value.
#			Also keep in mind that the number of retransmissions
#			is not changed by this setting, so the default of 20
#			may no longer be appropriate.  You might need to set
#			MAX_ARP_RETRIES, MAX_BOOTP_RETRIES, MAX_TFTP_RETRIES
#			and MAX_RPC_RETRIES to a larger value.
#	-DTIMEOUT=n
#			Use with care!! See above.
#			Sets the base of RFC2131 sleep interval to n.
#			This can be used with -DBACKOFF_LIMIT=0 to get a small
#			and constant (predictable) retry interval for embedded
#			devices. This is to achieve short boot delays if both
#			the DHCP Server and the embedded device will be powered
#			on the same time. Otherwise if the DHCP server is ready
#			the client could sleep the next exponentially timeout,
#			e.g. 70 seconds or more. This is not what you want.
#			n should be a multiple of TICKS_PER_SEC (18).
#
#	Boot device options:
#
#	-DCAN_BOOT_DISK
#			Can boot from floppy/hd if bootimage matches the
#			pattern "/dev/[fhs]d*".
#	-DTRY_FLOPPY_FIRST
#			If > 0, tries that many times to read the boot
#			sector from a floppy drive before booting from
#			ROM. If successful, does a local boot.
#			It assumes the floppy is bootable.
#			Requires -DCAN_BOOT_DISK.
#	-DEMERGENCYDISKBOOT
#			If no BOOTP server can be found, then boot from
#			local disk. The accessibility of the TFTP server
#			has no effect, though! So configure your BOOTP
#			server properly. You should probably reduce
#			MAX_BOOTP_RETRIES to a small number like 3.
#
#	Boot image options:
#
#	-DTAGGED_IMAGE
#			Add tagged image kernel boot support (recommended).
#	-DAOUT_IMAGE
#			Add a.out kernel boot support (generic).
#	-DELF_IMAGE
#			Add generic ELF kernel boot support (recommended).
#	-DEL64F_IMAGE
#			Add generic ELF64 kernel boot support (useful for > 4GB disks).
#	-DWINCE_IMAGE
#			Add the ability to boot WINCE.... now only sis630 OK!
#	-DFREEBSD_PXEEMU
#			Add the ability to boot PXE images... only FreeBSD supported
#	-DX86_BOOTSECTOR_IMAGE
#			Add the ability to boot 512 byte x86 boot sectors
#	-DIMAGE_MULTIBOOT
#			Add Multiboot image support (currently only
#			for ELF images).
#			Without this, generic ELF support is selected.
#	-DIMAGE_FREEBSD
#			Add FreeBSD image loading support (requires at least
#			-DAOUT_IMAGE and/or -DELF_IMAGE).
#	-DFREEBSD_KERNEL_ENV
#			Pass in FreeBSD kernel environment
#	-DAOUT_LYNX_KDI
#			Add Lynx a.out KDI support
#	-DMULTICAST_LEVEL1
#			Support for sending multicast packets
#	-DMULTICAST_LEVEL2
#			Support for receiving multicast packets
#	-DDOWNLOAD_PROTO_TFTP
#			If defined, includes TFTP support (recommended).
#	-DDOWNLOAD_PROTO_NFS
#			If defined, includes NFS support.
#	-DDEFAULT_PROTO_NFS
#			If defined, makes NFS the default protocol instead
#			of TFTP. Requires DOWNLOAD_PROTO_NFS.
#	-DDOWNLOAD_PROTO_SLAM
#			If defined, includes Scalable Local Area Multicast
#			support.
#	-DDOWNLOAD_PROTO_TFTM
#			If defined, includes TFTP Multicast mode support.
#	-DDOWNLOAD_PROTO_HTTP
#			If defined, includes HTTP support.
#	-DSAFEBOOTMODE
#			Enables "Safe Boot Mode": Only boot images after verification
#			with public-key-cryptography, this is WORK IN PROGRESS
#			must be or'ed from one publickey storage method and
#			one nbi-digest method value
#			0  = store key in code (safeboot_key.h)
#			1  = store key in ROM somewhere else (to do)
#			0 = crypted digest in first 512 bytes -
#			    as bytes 446...509 (compatible with most NBIs!?)
#			16 = crypted digest as ELF block (to do... Eric?)
#			So for now, only valid mode is "0" 
#
#	Console options:
#
#	-DCONSOLE_FIRMWARE
#			Set for firmware/BIOS provided (default if nothing else is set).
#			Normally this is shows up on your CRT.
#	-DCONSOLE_SERIAL
#			Set for serial console.
#	-DCONSOLE_DUAL
#			Both of the above
#	-DCONSOLE_DIRECT_VGA
#			Set for direct VGA console (only for x86).
#	-DCOMCONSOLE
#			Set port, e.g. 0x3F8.
#	-DCONSPEED
#			Set speed, e.g. 57600.
#	-DCOMPARM
#			Set Line Control Register value for data bits, stop
#			bits and parity. See a National Semiconditor 8250/
#			16450/16550 data sheet for bit meanings.
#			If undefined, defaults to 0x03 = 8N1.
#	-DCOMPRESERVE
#			Ignore COMSPEED and COMPARAM and instead preserve
#			the com port parameters from the previous user
#			of the com port.  Examples of previous user are a BIOS
#			that implements console redirection, lilo and LinuxBIOS.
#			This makes it trivial to keep the serial port
#			speed setting in sync between multiple users.
#			You set the speed in the first user and the
#			rest follow along.
#
#	Obscure options you probably don't need to touch:
#
#	-DPOWERSAVE
#			Halt the processor when waiting for keyboard input
#			which saves power while waiting for user interaction.
#			Good for compute clusters and VMware emulation.
#			But may not work for all CPUs.
#	-DRELOCATE
#			After starting etherboot relocate to the top
#			of memory.  This allows loading fairly arbitrary
#			rom images.  This doesn't work with a couple of
#			drivers, e.g. lance.
#
#	BUS options:
#	
#	-DCONFIG_PCI
#			Include support for devices using the pci bus.
#	-DCONFIG_ISA
#			Include support for devices using isa bus.
#	-DCONFIG_PCMCIA
#			Include support for PCMCIA in general *development*
# @/OptionDescription@

# These default settings compile Etherboot with a small number of options.
# You may wish to enable more of the features if the size of your ROM allows.


# Select which buses etherboot should support
CFLAGS+=	-DCONFIG_PCI -DCONFIG_ISA
#CFLAGS+=	-DCONFIG_PCMCIA

# For prompting and default on timeout
CFLAGS+=	-DASK_BOOT=3 -DBOOT_FIRST=BOOT_NIC
# If you would like to attempt to boot from other devices as well as the network.
# CFLAGS+=	-DBOOT_SECOND=BOOT_FLOPPY
# CFLAGS+=	-DBOOT_THIRD=BOOT_DISK
# CFLAGS+=	-DBOOT_INDEX=0

# If you prefer the old style rotating bar progress display
# CFLAGS+=	-DBAR_PROGRESS

# Enabling this creates non-standard images which use ports 1067 and 1068
# for DHCP/BOOTP
# CFLAGS+=	-DALTERNATE_DHCP_PORTS_1067_1068

# Enabling this makes the boot ROM require a Vendor Class Identifier
# of "Etherboot" in the Vendor Encapsulated Options
# This can be used to reject replies from servers other than the one
# we want to give out addresses to us, but it will prevent Etherboot
# from getting an IP lease until you have configured DHCPD correctly
# CFLAGS+=	-DREQUIRE_VCI_ETHERBOOT

# Enabling this causes Etherboot to ignore Etherboot-specific options
# that are not within an Etherboot encapsulated options field.
# This option should be enabled unless you have a legacy DHCP server
# configuration from the bad old days before the use of
# encapsulated Etherboot options.
CFLAGS+=	-DALLOW_ONLY_ENCAPSULATED

# Specify a default bootfile to be used if the DHCP server does not
# provide the information.  If you do not specify this option, then
# DHCP offers that do not contain bootfiles will be ignored.
# CFLAGS+=	-DDEFAULT_BOOTFILE=\"tftp:///tftpboot/kernel\"

# Limit the delay on packet loss/congestion to a more bearable value. See
# description above.  If unset, do not limit the delay between resend.
CFLAGS+=	-DBACKOFF_LIMIT=7 -DCONGESTED

# More optional features
# CFLAGS+=	-DCAN_BOOT_DISK -DTRY_FLOPPY_FIRST=4

# For a serial console, which can run in parallel with FIRMWARE console
# CFLAGS+=	-DCONSOLE_DUAL -DCOMCONSOLE=0x3F8 -DCONSPEED=9600

# Enable tagged image, generic ELF, Multiboot ELF
# or FreeBSD ELF/a.out boot image support
CFLAGS+=	-DTAGGED_IMAGE -DELF_IMAGE
# CFLAGS+=	-DAOUT_IMAGE -DIMAGE_MULTIBOOT -DIMAGE_FREEBSD
# CFLAGS+=	-DAOUT_IMAGE -DAOUT_LYNX_KDI

# Download files via TFTP
CFLAGS+=	-DDOWNLOAD_PROTO_TFTP
# Change download protocol to NFS, default is TFTP
# CFLAGS+=	-DDOWNLOAD_PROTO_NFS

# Multicast Support
# CFLAGS+=-DALLMULTI -DMULTICAST_LEVEL1 -DMULTICAST_LEVEL2 -DDOWNLOAD_PROTO_TFTM

# Support for PXE emulation. Works only with FreeBSD to load the kernel
# via pxeboot, use only with DOWNLOAD_PROTO_NFS
# CFLAGS+=	-DFREEBSD_PXEEMU

# Relocate etherboot to just below 4GB.
# A couple of drivers do not work with relocation, notably lance.
CFLAGS+=	-DRELOCATE

# you should normally not need to change these
HOST_CC=	gcc
CPP=		gcc -E -Wp,-Wall
RM=		rm -f
TOUCH=		touch
PERL=		/usr/bin/perl
CC=		gcc
AS=		as
LD=		ld
SIZE=		size
AR=		ar
RANLIB=		ranlib
OBJCOPY=	objcopy

CFLAGS+=	-Os -ffreestanding 
CFLAGS+=	-Wall -W -Wno-format
ASFLAGS+=
LDFLAGS+=
LDBINARY=	--oformat binary	# flag for headerless binary

# Location to place generated binaries, and files
BIN=bin