This has interesting side-effects such as producing sizes for .bss
segments that are negative, causing the majority of addressable memory
to be zeroed out.
Fix by using the form
ABSOLUTE ( x ) - ABSOLUTE ( y )
rather than
ABSOLUTE ( x - y )
Reported-by: H. Peter Anvin <hpa@zytor.com> Suggested-by: H. Peter Anvin <hpa@zytor.com> Tested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Fri, 22 Apr 2011 22:31:25 +0000 (23:31 +0100)]
[undi] Assume that interrupts are not supported if IRQ=0
Some PXE stacks (notably old Etherboot/gPXE stacks) will claim to use
the timer interrupt, rather than reporting that interrupts are not
supported. Since using the timer interrupt is equivalent to polling
anyway, we may as well genuinely poll these stacks.
Michael Brown [Sat, 9 Apr 2011 22:34:34 +0000 (23:34 +0100)]
[build] Run parserom.pl only on potential driver files
PCI_ROM() and ISA_ROM() macros occur only within driver files.
Running parserom.pl on non-driver files is therefore redundant.
Skip running parserom.pl on any files outside a "drivers" directory.
This reduces the time taken to generate build rules and dependencies
after a "make veryclean" by around 12%.
Michael Brown [Fri, 8 Apr 2011 02:19:06 +0000 (03:19 +0100)]
[cmdline] Simplify "isset" command
There is no plausible scenario I can think of in which "isset" would
be used with more than one argument. Simplify the code by specifying
that exactly one argument is required.
Michael Brown [Thu, 7 Apr 2011 12:53:28 +0000 (13:53 +0100)]
[hermon] Work around missing mport support in current BOFM implementations
Current BOFM versions are unable to create entries with mport>1, which
means that only the port 1 MAC address can be explicitly specified.
Work around this by using the provided MAC address as a base address
for all subsequent ports. For example, if BOFM assigns the address
00:1A:64:76:00:09 for port 1
then we will assign the addresses
00:1A:64:76:00:09 for port 1
00:1A:64:76:00:0a for port 2
Future BOFM versions that may correctly support mport will work with
this scheme without modification provided that the BOFM entries are
created in increasing order of mport. Since BOFM tools tend to
generate entries in increasing order (of slot, port, etc), this is not
an unreasonable compromise.
Michael Brown [Tue, 5 Apr 2011 13:59:27 +0000 (14:59 +0100)]
[build] Refuse to attempt building with the GNU gold linker
GNU gold (part of newer binutils builds) does not appear to be
designed to support generic linker functionality, since its source
code contains several Linux-specific hard-coded assumptions about the
layout of ELF binaries. Attempting to build iPXE using GNU gold will
generally cause some kind of "linker internal error".
Provide an explicit error message suggesting the use of GNU ld
instead.
Reported-by: Chris Hills <chaz@chaz6.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Sat, 2 Apr 2011 23:37:27 +0000 (00:37 +0100)]
[tcp] Update ts_recent whenever window is advanced
Commit 3f442d3 ("[tcp] Record ts_recent on first received packet")
failed to achieve its stated intention.
Fix this (and reduce the code size) by moving the ts_recent update to
tcp_rx_seq(). This is the code responsible for advancing the window,
called by both tcp_rx_syn() and tcp_rx_data(), and so the window check
is now redundant.
Reported-by: Frank Weed <zorbustheknight@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Fri, 1 Apr 2011 19:07:17 +0000 (20:07 +0100)]
[cmdline] Fix "isset" command
Commit b5f5f73 ("[cmdline] Expand settings within each command-line
token individually") introduced a regression into the "isset" command:
it is now possible for command-line arguments to be empty strings, and
so "isset" cannot simply check for a non-empty argument list.
Restore previous behaviour by checking for the presence of any
non-empty arguments, rather than checking for a non-empty argument
list.
Reported-by: Nemtallah Daher <n.daher@csuohio.edu> Tested-by: Nemtallah Daher <n.daher@csuohio.edu> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 30 Mar 2011 14:57:33 +0000 (15:57 +0100)]
[build] Avoid generating ROMs with "match-any" vendor or device IDs
A PCI_ROM() entry containing a vendor or device ID of PCI_ANY_ID
(0xffff) indicates to pci_find_driver() that the entry's vendor or
device ID should be ignored when matching against the device's vendor
or device ID. It does not represent a PCI ROM that should be built.
Michael Brown [Wed, 30 Mar 2011 14:49:00 +0000 (15:49 +0100)]
[build] Include only one copy of each ROM in "make allroms"
Each PCI ROM currently ends up appearing twice in the $(ROMS) list:
once under its designated name (e.g. "rtl8139.rom"), once under its
PCI IDs (e.g. "bin/10ec8139.rom").
Include only the latter of these in the $(ROMS) list, so that doing
"make allroms" will generate only one copy of each ROM.
Reported-by: Bastian Blank <waldi@debian.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 30 Mar 2011 00:34:51 +0000 (01:34 +0100)]
[bofm] Use BOFM protocol version 2 if available
The original EFI BOFM protocol has a design flaw that limits the size
of the table to 1kB, since the table is embedded within the
IBM_BOFM_DRIVER_CONFIGURATION_PROTOCOL structure. Version 2 of the
protocol works around this problem.
Michael Brown [Tue, 29 Mar 2011 23:33:48 +0000 (00:33 +0100)]
[forcedeth] Never change the NVREG_TRANSMITPOLL_MAC_ADDR_REV flag
iPXE operates the forcedeth NIC in promiscuous mode, and never changes
the unicast MAC address filter registers. We should not therefore set
the flag indicating (to other drivers loaded later) that the MAC
address order has already been corrected.
Reported-by: Tal Aloni <tal.aloni.il@gmail.com> Tested-by: Tal Aloni <tal.aloni.il@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Tue, 29 Mar 2011 20:55:04 +0000 (21:55 +0100)]
[forcedeth] Remove software unicast MAC address filter
The forcedeth driver currently implements unicast MAC address
filtering in software. This is almost invariably the wrong thing to
do (since the network stack must already be able to cope with unwanted
packets) and it breaks FCoE (which requires the card to operate in
promiscuous mode).
Also, the implementation is buggy: is_local_ether_addr() is used to
check for a locally-assigned Ethernet address (not to check for a
unicast address), and the current link-layer address is in
netdev->ll_addr, not netdev->hw_addr.
Fix by removing this code.
Reported-by: Tal Aloni <tal.aloni.il@gmail.com> Tested-by: Tal Aloni <tal.aloni.il@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Mon, 28 Mar 2011 17:48:48 +0000 (18:48 +0100)]
[main] Add the "scriptlet" setting
A scriptlet is a single iPXE command that can be stored in
non-volatile option storage and used to override the default
"autoboot" behaviour without having to reflash the iPXE image.
For example, a scriptlet could contain
autoboot || reboot
to instruct iPXE to reboot the system if booting fails.
Unlike an embedded image, the presence of a scriptlet does not inhibit
the initial "Press Ctrl-B..." prompt. This allows the user to recover
from setting a faulty scriptlet.
Originally-implemented-by: Glenn Brown <glenn@myri.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Mon, 28 Mar 2011 15:32:30 +0000 (16:32 +0100)]
[cmdline] Allow ";" as an unconditional command separator
It is currently possible to construct a sequence of commands to be
executed regardless of success or failure using "|| &&" as the command
separator. (The "||" captures the failure case, the blank command
converts it to a success case.)
Allow ";" to be used as a more visually appealing (and
space-efficient) alternative.
Thomas Miletich [Mon, 28 Mar 2011 12:43:31 +0000 (14:43 +0200)]
[linux] Avoid unused-but-set variable warning in gcc 4.6
Temporary modification to prevent valgrind.h from breaking compilation
with gcc 4.6. When this problem is fixed upstream, a new and
unmodified copy of valgrind.h should be imported.
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Thomas Miletich [Mon, 28 Mar 2011 12:48:59 +0000 (14:48 +0200)]
[forcedeth] Avoid unused-but-set variable warning in gcc 4.6
Avoid unused-but-set variable warning in gcc 4.6 which was introduced
by commit 9215b7f ("[forcedeth] Clear the MII link status register on
link status changes").
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Mon, 28 Mar 2011 00:05:40 +0000 (01:05 +0100)]
[exeprefix] Add .exe prefix
An iPXE .exe image can be loaded from DOS. Tested using bin/ipxe.exe
to load a Linux kernel and simple initramfs from within MS-DOS 6.22.
(EDD must be disabled using the "edd=off" kernel parameter, since the
loaded kernel image has already overwritten parts of DOS' INT 13
wrapper.)
Michael Brown [Sun, 27 Mar 2011 23:55:15 +0000 (00:55 +0100)]
[prefix] Avoid using base memory for temporary decompression area
In the unlikely (but observable) event that INT 15,88 returns less
memory above 1MB than is required for the temporary decompression
area, ignore it and use the 1MB point anyway.
Michael Brown [Sun, 27 Mar 2011 18:36:00 +0000 (19:36 +0100)]
[image] Remove redundant call to basename()
There is no need to explicitly call basename() to construct an image
name in imgfetch_core_exec(), since image_set_uri() will do so
automatically anyway (and will do so without getting confused by URIs
with query strings).
Michael Brown [Sat, 26 Mar 2011 14:58:17 +0000 (14:58 +0000)]
[tcp] Record ts_recent on first received packet
Commit 6861304 ("[tcp] Handle out-of-order received packets")
introduced a regression in which ts_recent would not be updated until
the first packet is received in the ESTABLISHED state, i.e. the
timestamp from the SYN+ACK packet would be ignored. This causes the
connection to be dropped by strictly-conforming TCP peers, such as
FreeBSD.
Fix by delaying the timestamp window check until after processing the
received SYN flag.
Reported-by: winders@sonnet.com Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 23 Mar 2011 13:51:32 +0000 (13:51 +0000)]
[undi] Cope with devices that erroneously claim not to use interrupts
Some PXE stacks advertise that interrupts are not supported, despite
requiring the use of interrupts. Attempt to cope with such cards
without breaking others by always hooking the interrupt, and using the
"interrupts supported" flag only to decide whether or not to wait for
an interrupt before calling PXENV_UNDI_ISR_IN_PROCESS.
The possible combinations are therefore:
1. Card generates interrupts and claims to support interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS only after an interrupt
has been observed. (This is required to avoid lockups in some PXE
stacks, which spuriously sulk if called before an interrupt has
been generated.)
Such a card should work correctly.
2. Card does not generate interrupts and does not claim to support
interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS indiscriminately, matching
the observed behaviour of at least one other PXE NBP (winBoot/i).
Such a card should work correctly.
3. Card generates interrupts but claims not to support interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS indiscriminately. An
interrupt will still result in a call to PXENV_UNDI_ISR_IN_START.
Such a card may work correctly.
4. Card does not generate interrupts but claims to support interrupts
Such a card will not work at all.
Reported-by: Jerry Cheng <jaspers.cheng@msa.hinet.net> Tested-by: Jerry Cheng <jaspers.cheng@msa.hinet.net> Reported-by: Mauricio Silveira <mauricio@livreti.com.br> Tested-by: Mauricio Silveira <mauricio@livreti.com.br> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 23 Mar 2011 10:08:16 +0000 (10:08 +0000)]
[settings] Fix setting expansion
Commit 5fbd020 ("[settings] Display canonical setting name in output
of "show" command") introduced a regression causing all setting
expansions (e.g. "${net0/mac}") to expand to an empty string.
Fix by returning the formatted value length from
fetchf_named_setting(), as expected by the caller.
Michael Brown [Tue, 22 Mar 2011 21:07:22 +0000 (21:07 +0000)]
[settings] Display only applicable settings in "config" user interface
Display only settings relevant to the current scope. For example,
"config net0" no longer displays SMBIOS settings, and "config smbios"
displays only SMBIOS settings.
Originally-implemented-by: Glenn Brown <glenn@myri.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 16 Mar 2011 21:31:16 +0000 (21:31 +0000)]
[console] Try to avoid problems caused by keycode 86
The "us" keyboard layout contains a mapping for keycode 86 (which
seems not to correspond to any physical key on many US keyboards) to
the ASCII character '<'. This mapping causes conflicts with the
mapping for keycode 51, which also maps (with shift) to '<'.
Change the keyboard mapping generator to choose the lowest keycode for
each ASCII character as indicating the relevant mapping to use, on the
basis that a lower keycode roughly indicates a "more normal" key. On
a German keyboard, which has keys for both keycode 51 and keycode 86
present, this causes '<' to be remapped to ';', which is a closer
match to typical user expectations.
Reported-by: Sven Dreyer <sven@dreyer-net.de> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 16 Mar 2011 19:51:02 +0000 (19:51 +0000)]
[eepro] Avoid unused variable warning in gcc 4.6
From a cursory examination, it appears as though the calculation of
tx_available is redundant, since eepro_transmit() waits for transmit
completion before returning anyway.
Reported-by: Ralph Giles <giles@thaumas.net> Tested-by: Ralph Giles <giles@thaumas.net> Signed-off-by: Michael Brown <mcb30@ipxe.org>
projects / thirdparty / ipxe.git / log
