Some RTL8169 cards (observed with an RTL8169SC) power up with
TCR.MXDMA set to 16 bytes. While this does not prevent proper
operation, it almost certainly degrades performance.
Fix by explicitly setting TCR.MXDMA to "unlimited".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[realtek] Use explicit values for RCR.RXFTH and RCR.MXDMA
Some RTL8169 cards (observed with an RTL8169SC) power up with invalid
values in RCR.RXFTH and RCR.MXDMA, causing receive DMA to fail. Fix
by setting explicit values for both fields.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[realtek] Always set high dword of ring address registers
Some RTL8169 cards (observed with an RTL8169SC) power up with garbage
values in the ring address registers, and do not clear the registers
on reset.
Fix by always setting the high dword of the ring address registers.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 501527d ("[http] Treat any unexpected connection close as an
error") introduced a regression causing HTTP SAN booting to fail. At
the end of the response to the HEAD request, the call to http_done()
would erroneously believe that the server had disconnected in the
middle of the HTTP headers.
Fix by treating the header block from a HEAD request as a trailer
block. This fixes the problem and also simplifies the logic in
http_rx_header().
Reported-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The FTP SIZE command allows us to get the size of a particular file,
as a consequence, we can now show proper transfer progression while
fetching a file using the FTP protocol.
Signed-off-by: Marin Hannache <git@mareo.fr>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[http] Treat any unexpected connection close as an error
iPXE currently checks that the server has not closed the connection
mid-stream (i.e. in the middle of a chunked transfer, or before the
specified Content-Length has been received), but does not check that
the server got as far as starting to send data. Consequently, if the
server closes the connection before any data is transferred (e.g. if
the server gives up waiting while iPXE performs the validation steps
for TLS), then iPXE will treat this as a successful transfer of a
zero-length file.
Fix by checking the RX connection state, and forcing an error if the
server has closed the connection at an unexpected point.
Originally-fixed-by: Marin Hannache <mareo@mareo.fr>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[util] Fix up checksum in UNDI ROM header, if present
The UNDI ROM header does contain a checksum byte. Apparently no-one
cares about this, since iPXE has left it as zero for years without
anyone noticing.
Since Option::ROM now understands the UNDI ROM header, we may as well
fix up the checksum byte for the sake of completeness.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[util] Allow for CALL NEAR in the option ROM initialisation entry point
Option::ROM currently understands only JMP NEAR and JMP SHORT
instructions in the initialisation entry point. At least one Broadcom
option ROM has been observed to use a CALL NEAR instruction.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[comboot] Accept only ".cbt" as an extension for COMBOOT images
COMBOOT images are detected by looking for a ".com" or ".cbt" filename
extension. There are widely-used files with a ".com" extension, such
as "wdsnbp.com", which are PXE images rather than COMBOOT images.
Avoid false detection of PXE images as COMBOOT images by accepting
only a ".cbt" extension as indicating a COMBOOT image.
Interestingly, this bug has been present for a long time but was
frequently concealed because the filename was truncated to fit the
fixed-length "name" field in struct image. (PXE binaries ending in
".com" tend to be related to Windows deployment products and so often
use pathnames including backslashes, which iPXE doesn't recognise as a
path separator and so treats as part of a very long filename.)
Commit 1c127a6 ("[image] Simplify image management commands and
internal API") made the image name a variable-length field, and so
exposed this flaw in the COMBOOT image detection algorithm.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[romprefix] Round up PMM allocation sizes to nearest 4kB
Some AMI BIOSes apparently break in exciting ways when asked for PMM
allocations for sizes that are not multiples of 4kB.
Fix by rounding up the image source area to the nearest 4kB. (The
temporary decompression area is already rounded up to the nearest
128kB, to facilitate sharing between multiple iPXE ROMs.)
Reported-by: Itay Gazit <itayg@mellanox.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Change the DMA alignment from 4096 bytes to 16 bytes, to conserve
available DMA memory. The hardware doesn't have any specific
alignment requirements.
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Reduce CPU usage while waiting for user input. This is particularly
important for virtual machines, where CPU is a shared resource.
Reported-by: Alessandro Salvatori <alessandro@embrane.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Similarly to FreeBSD, OpenBSD requires the object format to be
specified as elf_i386_obsd rather than elf_i386.
Reported-by: Jiri B <jirib@devio.us>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[romprefix] Report a pessimistic runtime size estimate
PCI3.0 allows us to report a "runtime size" which can be smaller than
the actual ROM size. On systems that support PMM our runtime size
will be small (~2.5kB), which helps to conserve the limited option ROM
space. However, there is no guarantee that the PMM allocation will
succeed, and so we need to report the worst-case runtime size in the
PCI header.
Move the "shrunk ROM size" field from the PCI header to a new "iPXE
ROM header", allowing it to be accessed by ROM-manipulation utilities
such as disrom.pl.
Reported-by: Anton D. Kachalov <mouse@yandex-team.ru>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
gcc 4.7 produces a spurious warning about an array subscript being out
of bounds. Use a pointer dereference instead of an array lookup to
inhibit this spurious warning.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Simplify the process of booting by ensuring that old images are not
left registered after an unsuccessful autoboot attempt.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expose image tail-recursion to iPXE scripts via the "--replace"
option. This functions similarly to exec() under Unix: the
currently-executing script is replaced with the new image (as opposed
to running the new image as a subroutine).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[efi] Standardise #include guard in ipxe_download.h
The script include/ipxe/efi/import.pl relies on a particular format
for the #include guard in order to detect EFI headers that are not
imported.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
PXENV_FILE_CMDLINE is an iPXE extension, and will not be supported by
most PXE stacks. Do not report any errors to the user, since in
almost all cases the error will mean simply "not loaded by iPXE".
Reported-by: Patrick Domack <patrickdk@patrickdk.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The EFI_CPU_IO_PROTOCOL is not available on all EFI platforms. In
particular, it is not available under OVMF, as used for qemu.
Since the EFI_CPU_IO_PROTOCOL is an abomination of unnecessary
complexity, banish it and use raw I/O instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Attempt to restore the network device to the state it was in prior to
calling the NBP. This simplifies the task of taking follow-up action
in an iPXE script.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[settings] Expose exit status of failed command via ${errno}
Allow scripts to report errors in more detail by exposing the most
recent error via the ${errno} setting. For example:
chain ${filename} || goto failed
...
:failed
imgfree http://192.168.0.1/ipxe_error.php?error=${errno}
Note that ${errno} is valid only immediately after executing a failed
command.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[pxeprefix] Place temporary stack after iPXE binary
Some BIOSes (observed on a Supermicro system with an AMI BIOS) seem to
use the area immediately below 0x7c00 to store data related to the
boot process. This data is currently liable to be overwritten by the
temporary stack used while decompressing and installing iPXE.
Try to avoid any such problems by placing the temporary stack
immediately after the loaded iPXE binary. Any memory used by the
stack could then potentially have been overwritten anyway by a larger
binary.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
On i350 the datasheet contradicts itself in stating that the default
value of RXDCTL.ENABLE for queue zero is both set (according to the
"Receive Initialization" section) and unset (according to the "Receive
Descriptor Control - RXDCTL" section). Empirical evidence suggests
that the default value is unset.
Explicitly enable both transmit and receive queues to avoid any
ambiguity.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[intel] Refill receive ring only after enabling receiver
On 82576 (and probably others), the datasheet states that "the tail
register of the queue (RDT[n]) should not be bumped until the queue is
enabled". There is some confusion over exactly what constitutes
"enabled": the initialisation blurb says that we should "poll the
RXDCTL register until the ENABLE bit is set", while the description
for the RXDCTL register says that the ENABLE bit is set by default
(for queue zero). Empirical evidence suggests that the ENABLE bit
reads as set immediately after writing to RCTL.EN, and so polling is
not necessary.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown