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* [bios] Add bin-x86_64-pcbios build platformMichael Brown2016-02-169-3641/+0Star
| | | | | | | | | | | | | | Move most arch/i386 files to arch/x86, and adjust the contents of the Makefiles and the include/bits/*.h headers to reflect the new locations. This patch makes no substantive code changes, as can be seen using a rename-aware diff (e.g. "git show -M5"). This patch does not make the pcbios platform functional for x86_64; it merely allows it to compile without errors. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [bios] Use size_t when casting _text16_memsz and _data16_memszMichael Brown2016-02-161-4/+5
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [bios] Use intptr_t when casting .text16 function pointersMichael Brown2016-02-161-2/+2
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [libc] Split rmsetjmp() and rmlongjmp() into a separate rmsetjmp.hMichael Brown2016-02-162-2/+2
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Add debug message to display real-mode segment addressesMichael Brown2016-01-111-0/+11
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Colourise debug outputMichael Brown2016-01-111-3/+3
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Notify BIOS via INT 1a,564e for each new network deviceMichael Brown2015-09-151-0/+26
| | | | | | | | | Use INT 1a,564e to notify the BIOS of each network device that we detect. This provides an opportunity for the BIOS to implement platform policy such as changing the MAC address by issuing a call to PXENV_UNDI_SET_STATION_ADDRESS. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Invoke INT 1a,564e when PXE stack is activatedMichael Brown2015-09-151-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Invoke INT 1a,564e whenever a PXE stack is activated, passing the address of the PXENV+ structure in %es:%bx. This is designed to allow a BIOS to be notified when a PXE stack has been installed, providing an opportunity for start-of-day commands such as setting the MAC address according to a policy chosen by the BIOS. PXE defines INT 1a,5650 as a means of locating the PXENV+ structure: this call returns %ax=0x564e and the address of the PXENV+ structure in %es:%bx. We choose INT 1a,564e as a fairly natural notification call, using the parameters as would be returned by INT 1a,5650. The full calling convention (documented as per section 3.1 of the PXE specification) is: INT 1a,564e - PXE installation notification Enter: %ax = 0x564e %es = 16-bit segment address of the PXENV+ structure %bx = 16-bit offset of the PXENV+ structure Exit: %edx may be trashed (as is the case for INT 1a,5650) All other register contents must be preserved CF is cleared IF is preserved All other flags are undefined Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [uri] Generalise tftp_uri() to pxe_uri()Michael Brown2015-09-021-13/+11Star
| | | | | | | | | | | | | | | | | | Merge the functionality of parse_next_server_and_filename() and tftp_uri() into a single pxe_uri(), which takes a server address (IPv4/IPv6/none) and a filename, and produces a URI using the rule: - if the filename is a hierarchical absolute URI (i.e. includes a scheme such as "http://" or "tftp://") then use that URI and ignore the server address, - otherwise, if the server address is recognised (according to sa_family) then construct a TFTP URI based on the server address, port, and filename - otherwise fail. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Construct all fake DHCP packets before starting PXE NBPMichael Brown2015-08-291-24/+34
| | | | | | | | | | | | | | | | Commit edf74df ("[pxe] Always reconstruct packet for PXENV_GET_CACHED_INFO") fixed the problems caused by returning stale DHCP packets (e.g. from an earlier boot attempt using a different network device), but broke interoperability with NBPs such as WDS which may overwrite our cached (fake) DHCP packets and expect the modified packets to be returned by a subsequent call to PXENV_GET_CACHED_INFO. Fix by constructing the fake DHCP packets immediately before transferring control to a PXE NBP. Calls to PXENV_GET_CACHED_INFO will now never modify the cached packets. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Always reconstruct packet for PXENV_GET_CACHED_INFOMichael Brown2015-06-291-10/+8Star
| | | | | | | Avoid accidentally returning stale packets (e.g. for a previously attempted network device) by always constructing a fresh DHCP packet. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [i386] Move real_to_user() to realmode.hMichael Brown2015-03-052-0/+2
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Fix the REQUIRE_SYMBOL mechanismMichael Brown2015-03-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | At some point in the past few years, binutils became more aggressive at removing unused symbols. To function as a symbol requirement, a relocation record must now be in a section marked with @progbits and must not be in a section which gets discarded during the link (either via --gc-sections or via /DISCARD/). Update REQUIRE_SYMBOL() to generate relocation records meeting these criteria. To minimise the impact upon the final binary size, we use existing symbols (specified via the REQUIRING_SYMBOL() macro) as the relocation targets where possible. We use R_386_NONE or R_X86_64_NONE relocation types to prevent any actual unwanted relocation taking place. Where no suitable symbol exists for REQUIRING_SYMBOL() (such as in config.c), the macro PROVIDE_REQUIRING_SYMBOL() can be used to generate a one-byte-long symbol to act as the relocation target. If there are versions of binutils for which this approach fails, then the fallback will probably involve killing off REQUEST_SYMBOL(), redefining REQUIRE_SYMBOL() to use the current definition of REQUEST_SYMBOL(), and postprocessing the linked ELF file with something along the lines of "nm -u | wc -l" to check that there are no undefined symbols remaining. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Relicense files under GPL2_OR_LATER_OR_UBDLMichael Brown2015-03-024-4/+20
| | | | | | | | | | These files cannot be automatically relicensed by util/relicense.pl since they either contain unusual but trivial contributions (such as the addition of __nonnull function attributes), or contain lines dating back to the initial git revision (and so require manual knowledge of the code's origin). Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Relicense files under GPL2_OR_LATER_OR_UBDLMichael Brown2015-03-023-3/+15
| | | | | | | | | | | | | | | Relicence files with kind permission from the following contributors: Alex Williamson <alex.williamson@redhat.com> Eduardo Habkost <ehabkost@redhat.com> Greg Jednaszewski <jednaszewski@gmail.com> H. Peter Anvin <hpa@zytor.com> Marin Hannache <git@mareo.fr> Robin Smidsrød <robin@smidsrod.no> Shao Miller <sha0.miller@gmail.com> Thomas Horsten <thomas@horsten.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Relicense files under GPL2_OR_LATER_OR_UBDLMichael Brown2015-03-022-2/+10
| | | | | | | Relicense files for which I am the sole author (as identified by util/relicense.pl). Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Maintain a queue for received PXE UDP packetsMichael Brown2015-02-061-38/+85
| | | | | | | | | Some devices return multiple packets in a single poll. Handle such devices gracefully by enqueueing received PXE UDP packets (along with a pseudo-header to hold the IPv4 addresses and port numbers) and dequeueing them on subsequent calls to PXENV_UDP_READ. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Use tftp_uri() to construct PXE TFTP URIsMichael Brown2015-02-061-12/+15
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [tftp] Explicitly abort connection whenever parent interface is closedMichael Brown2015-02-061-10/+7Star
| | | | | | | | | Fetching the TFTP file size is currently implemented via a custom "tftpsize://" protocol hack. Generalise this approach to instead close the TFTP connection whenever the parent data-transfer interface is closed. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Work around missing PXENV_UNDI_OPEN only when necessaryMichael Brown2014-05-031-2/+4
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Profile UNDI transmit datapathMichael Brown2014-05-031-0/+8
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Profile all PXE API callsMichael Brown2014-05-031-0/+49
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Work around bug in gcc >= 4.8Michael Brown2013-06-071-3/+5
| | | | | | | | | | | | | | | | | | | gcc 4.8 and 4.9 fail to compile pxe_call.c with the error "bp cannot be used in asm here". Other points in the codebase which use "ebp" in the asm clobber list do not seem to be affected. Unfortunately gcc provides no way to specify %ebp as an output register, so we cannot use this as a workaround. The only viable solution is to explicitly push/pop %ebp within the asm itself. This is ugly for two reasons: firstly, it may be unnecessary; secondly, it may cause gcc to generate invalid %esp-relative addresses if the asm happens to use memory operands. This specific block of asm uses no memory operands and so will not generate invalid code. Reported-by: Daniel P. Berrange <berrange@redhat.com> Reported-by: Christian Hesse <list@eworm.de> Originally-fixed-by: Christian Hesse <list@eworm.de> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Convert external PXE API errors into iPXE platform-generated errorsMichael Brown2013-04-291-3/+11
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [tftp] Allow TFTP block size to be controlled via the PXE TFTP APIMichael Brown2013-03-061-7/+20
| | | | | | | | | | | | | | The PXE TFTP API allows the caller to request a particular TFTP block size. Since mid-2008, iPXE has appended a "?blksize=xxx" parameter to the TFTP URI constructed internally; nothing has ever parsed this parameter. Nobody seems to have cared that this parameter has been ignored for almost five years. Fix by using xfer_window(), which provides a fairly natural way to convey the block size information from the PXE TFTP API to the TFTP protocol layer. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [ipoib] Expose Ethernet-compatible eIPoIB link-layer addresses and headersMichael Brown2012-08-311-1/+2
| | | | | | | | | | | | | Almost all clients of the raw-packet interfaces (UNDI and SNP) can handle only Ethernet link layers. Expose an Ethernet-compatible link layer to local clients, while remaining compatible with IPoIB on the wire. This requires manipulation of ARP (but not DHCP) packets within the IPoIB driver. This is ugly, but it's the only viable way to allow IPoIB devices to be driven via the raw-packet interfaces. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Update FSF mailing address in GPL licence textsMichael Brown2012-07-209-9/+18
| | | | | Suggested-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Add PXENV_FILE_CMDLINE API callMichael Brown2012-07-111-0/+38
| | | | | | | Allow a PXE NBP to obtain its command line (if any) via the new PXE API call PXENV_FILE_CMDLINE. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Provide PXENV_FILE_EXIT_HOOK only for ipxelinux.0 buildsMichael Brown2011-12-112-47/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PXENV_FILE_EXIT_HOOK is designed to allow ipxelinux.0 to unload both the iPXE and pxelinux components without affecting the underlying PXE stack. Unfortunately, it causes unexpected behaviour in other situations, such as when loading a non-embedded pxelinux.0 via undionly.kpxe. For example: PXE ROM -> undionly.kpxe -> pxelinux.0 -> chain.c32 to boot hd0 would cause control to return to iPXE instead of booting from the hard disk. In some cases, this would result in a harmless but confusing "No more network devices" message; in other cases stranger things would happen, such as being returned to the iPXE shell prompt. The fundamental problem is that when pxelinux detects PXENV_FILE_EXIT_HOOK, it may attempt to specify an exit hook and then exit back to iPXE, assuming that iPXE will in turn exit cleanly via the specified exit hook. This is not a valid assumption in the general case, since the action of exiting back to iPXE does not directly cause iPXE to exit itself. (In the specific case of ipxelinux.0, this will work since the embedded script exits as soon as pxelinux.0 exits.) Fix the unexpected behaviour in the non-ipxelinux.0 cases by including support for PXENV_FILE_EXIT_HOOK only when using a new .kkkpxe format. The ipxelinux.0 build process should therefore now use undionly.kkkpxe instead of undionly.kkpxe. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Modularise PXE API provisionMichael Brown2011-12-116-348/+225Star
| | | | | | | Use the linker table infrastructure to dispatch PXE API calls to the relevant function. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Tidy up debugging outputMichael Brown2011-12-081-13/+16
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Check for a valid PXE network device when applicableMichael Brown2011-12-082-11/+213
| | | | | | | | | Very nasty things can happen if a NULL network device is used. Check that pxe_netdev is non-NULL at the applicable entry points, so that this type of problem gets reported to the caller rather than being allowed to crash the system. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Improve pxe_preboot debugging messagesMichael Brown2011-11-141-23/+48
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Improve pxe_undi debugging messagesMichael Brown2011-11-141-76/+84
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Allow link layer to report broadcast/multicast packets via pull()Michael Brown2011-07-151-7/+7
| | | | | | | | Allow the link layer to directly report whether or not a packet is multicast or broadcast at the time of calling pull(), rather than relying on heuristics to determine this at a later stage. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Report an IRQ number only if device supports interruptsMichael Brown2011-03-101-1/+2
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [init] Remove concept of "shutdown exit flags"Michael Brown2011-01-272-1/+3
| | | | | | | | Remove the concept of shutdown exit flags, and replace it with a counter used to keep track of exposed interfaces that require devices to remain active. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Report SUPPORTED_IRQ only if device supports interruptsMichael Brown2011-01-251-1/+3
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Improve pxe_udp debug messagesMichael Brown2010-12-151-9/+14
| | | | | | | | | | The PXE debugging messages have remained pretty much unaltered since Etherboot 5.4, and are now difficult to read in comparison to most of the rest of iPXE. Bring the pxe_udp debug messages up to normal iPXE standards. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Set correct PktType in PXENV_UNDI_ISRMichael Brown2010-12-091-1/+9
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Avoid touching fields that may not exist in PXENV_UNDI_GET_NIC_TYPEMichael Brown2010-12-091-5/+5
| | | | | | | | | | | Earlier versions of the PXE specification do not have the SubVendor_ID and SubDevice_ID fields, and some NBPs may not provide space for them. Avoid overwriting the contents of these fields, just in case. This is similar to the problem with the BufferLimit field in PXENV_GET_CACHED_INFO. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Use network device receive queue freezingMichael Brown2010-11-201-6/+11
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Always allow MAX_LL_HEADER_LEN for the link-layer headerMichael Brown2010-11-191-4/+2Star
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [xfer] Generalise metadata "whence" field to "flags" fieldMichael Brown2010-09-031-1/+1
| | | | | | | | | | | | | iPXE has never supported SEEK_END; the usage of "whence" offers only the options of SEEK_SET and SEEK_CUR and so is effectively a boolean flag. Further flags will be required to support additional metadata required by the Fibre Channel network model, so repurpose the "whence" field as a generic "flags" field. xfer_seek() has always been used with SEEK_SET, so remove the "whence" field altogether from its argument list. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [interface] Convert all data-xfer interfaces to generic interfacesMichael Brown2010-06-222-69/+58Star
| | | | | | | | | | | | | | Remove data-xfer as an interface type, and replace data-xfer interfaces with generic interfaces supporting the data-xfer methods. Filter interfaces (as used by the TLS layer) are handled using the generic pass-through interface capability. A side-effect of this is that deliver_raw() no longer exists as a data-xfer method. (In practice this doesn't lose any efficiency, since there are no instances within the current codebase where xfer_deliver_raw() is used to pass data to an interface supporting the deliver_raw() method.) Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Remove obsolete pxe_errortab.cMichael Brown2010-05-311-103/+0Star
| | | | | | | strerror() has not been able to use the PXE-only error table since commit 9aa61ad ("Add per-file error identifiers") back in 2007. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Use weak definitions instead of weak declarationsJoshua Oreman2010-05-271-1/+1
| | | | | | | | | | | | | | | This removes the need for inline safety wrappers, marginally reducing the size penalty of weak functions, and works around an apparent binutils bug that causes undefined weak symbols to not actually be NULL when compiling with -fPIE (as EFI builds do). A bug in versions of binutils prior to 2.16 (released in 2005) will cause same-file weak definitions to not work with those toolchains. Update the README to reflect our new dependency on binutils >= 2.16. Signed-off-by: Joshua Oreman <oremanj@rwcr.net> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Treat PXENV_RESTART_TFTP as unreturnableMichael Brown2010-05-212-7/+13
| | | | | | | | | | | | | | | | | | | | | | | Microsoft WDS can end up calling PXENV_RESTART_TFTP to execute a second-stage NBP which then exits. Specifically, wdsnbp.com uses PXENV_RESTART_TFTP to execute pxeboot.com, which will exit if the user does not press F12. iPXE currently treats PXENV_RESTART_TFTP as a normal PXE API call, and so attempts to return to wdsnbp.com, which has just been vaporised by pxeboot.com. Use rmsetjmp/rmlongjmp to preserve the stack state as of the initial NBP execution, and to restore this state immediately prior to executing the NBP loaded via PXENV_RESTART_TFTP. This matches the behaviour in the PXE spec (which says that "if TFTP is restarted, control is never returned to the caller"), and allows pxeboot.com to exit relatively cleanly back to iPXE. As with all usage of setjmp/longjmp, there may be subtle corner case bugs due to not gracefully unwinding any state accumulated by the time of the longjmp call, but this seems to be the only viable way to provide the specified behaviour. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Rename gPXE to iPXEMichael Brown2010-04-208-35/+35
| | | | | | | | | | | Access to the gpxe.org and etherboot.org domains and associated resources has been revoked by the registrant of the domain. Work around this problem by renaming project from gPXE to iPXE, and updating URLs to match. Also update README, LOG and COPYRIGHTS to remove obsolete information. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [pxe] Remove pxe_set_cached_filename()Michael Brown2010-03-262-35/+0Star
| | | | | | | | | | | | | | | | | gPXE currently overwrites the filename stored in the cached DHCP packets when a call to PXENV_TFTP_READ_FILE or PXENV_RESTART_TFTP is made. This code has existed for many years as a workaround for RIS, which seemed to require that this be done. pxe_set_cached_filename() causes problems with the Bootix NBP, and a recent test demonstrates that RIS will complete successfully even with pxe_set_cached_filename() removed. There have been many changes to the DHCP and PXE logic since this code was first added, and it is quite plausible that it was masking a bug that no longer exists. Reported-by: Alex Zeffertt <alex.zeffertt@eu.citrix.com> Debugged-by: Shao Miller <Shao.Miller@yrdsb.edu.on.ca> Signed-off-by: Michael Brown <mcb30@etherboot.org>
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