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path: root/payloads/libpayload/arch/x86/exception.c
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2019-03-07payloads: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)Julius Werner
This patch is a raw application of find payloads/ -type f | \ xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g' Change-Id: I883b03b189f59b5d998a09a2596b0391a2d5cf33 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31775 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-10-04libpayload/x86/exception: Add ability to ignore unknown interruptsRaul E Rangel
This will make enabling the APIC safer by ignoring unknown interrupts and not halting the system. Once all interrupt sources have been found and handled DIE_ON_UNKNOWN_INTERRUPT can be set if desired. BUG=b:116777191 TEST=Booted grunt, halted the kernel, and pushed the power button while in S5. Verified that depthcharge logged the unknown exception. APIC Init Started APIC Configured Ignoring interrupt vector 39 Change-Id: If4ed566ec284d69786c369f37e4e331d7f892c74 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28882 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-10-04libpayload/x86/exception.c: Remove exception_install_hookRaul E Rangel
Not used by x86 code anymore. BUG=b:116777191 TEST=Validated that depthcharge can be built. Change-Id: I25ad3903989a5433ce73d657cfdb93dd1f34f7b5 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28881 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-10-04libpayload/apic: Only ACK interrupts triggered by the APICRaul E Rangel
Only set end of interrupt (EOI) when the APIC In-Service vector matches the interrupt vector. This makes it so we don't EOI a non APIC interrupt. BUG=b:116777191 TEST=Booted grunt with APIC enabled and verified depthcharge still works. Change-Id: I00bd1e7a0fcf2fc004feadc40d22ebfefe68b384 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28879 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-09-12libpayload/arch/x86: Add support for initializing the APICRaul E Rangel
This is just the bare minimum required to initialize the APIC. I only support xAPIC and chose not to support x2APIC. We can add that functionality later when it's required. I also made the exception dispatcher call apic_eoi so that the callbacks won't forget to call it. BUG=b:109749762 TEST=Booted grunt and verified that depthcharge continued to function and that linux booted correctly. Also verified GDB still works. Change-Id: I420a4eadae84df088525e727b481089ef615183f Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28241 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-09-10libpayload/x86/exception: Add ability to handle user defined interruptsRaul E Rangel
I need to setup the APIC timer to fire interrupts. I would like to reuse the existing interrupt table. So I extended it to support user defined interrupts. I just added all 255 vectors so there wouldn't need to be any additional build time configuration. I'm going to deprecate exception_install_hook and remove it in a follow up. It will be replaced with set_interrupt_handler. This way the exception lookup does not have to manage a list of callbacks, or have to worry about the order they are processed. BUG=b:109749762 TEST=Wrote an interrupt handler and fired an APIC timer interrupt and verified that vector 32 was returned. Change-Id: Id9c2583c7c3d9be4a06a25e546e64399f2b0620c Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28100 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-08-23libpayload/x86/exception: Add methods to enable/disable interruptsRaul E Rangel
Will be used by the APIC. BUG=b:109749762 TEST=Verified by the other cls in the stack. Change-Id: Id86f2719d98a90318ac625e09601e5dbb06e3765 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28239 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2018-08-06exception: Fix segment error code maskRaul E Rangel
The segment error descriptor is actually 13 bits long. BUG=b:109749762 TEST=Verified by causing a segment error Change-Id: I3439f9ce1e8cf0c472c4eb82d74a787718c9609f Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/27812 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2015-01-09libpayload: Rework exception hook interfaceJulius Werner
This patch makes some slight changes to the exception hook interface. The old code provides a different handler hook for every exception type... however, in practice all those hook functions often need to look very similar, so this creates more boilerplate than it removes. The new interface just allows for a single hook with the exception type passed as an argument, and the consumer can signal whether the exception was handled through the return value. (Right now this still only supports one consumer, but it could easily be extended to walk through a list of hooks if the need arises.) Also move the excepton state from an argument to a global. This avoids a lot of boilerplate since some consumers need to change the state from many places, so they would have to pass the same pointer around many times. It also removes the false suggestion that the exception state was not global and you could have multiple copies of it (which the exception core doesn't support for any architecture). On the ARM side, the exception state is separated from the exception stack for easier access. (This requires some assembly changes, and I threw in a few comments and corrected the immediate sigils from '$' to the official '#' while I'm there.) Since the exception state is now both stored and loaded through an indirection pointer, this allows for some very limited reentrance (you could point it to a different struct while handling an exception, and while you still won't be able to return to the outer-level exception from there, you could at least swap out the pointer and return back to System Mode in one go). BUG=chrome-os-partner:18390 TEST=Made sure normal exceptions still get dumped correctly on both archs. Original-Change-Id: I5d9a934fab7c14ccb2c9d7ee4b3465c825521fa2 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/202562 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 97542110f0b385b9b8d89675866e65db8ca32aeb) Signed-off-by: Marc Jones <marc.jones@se-eng.com> *** Squashed to prevent build failures. *** libpayload: align arm64 with new exception handling model The exception handling was previously updated, however the arm64 changes raced with hat one. Make the arm64 align with the new model. Without these changes compilation will fail. BUG=None BRANCH=None TEST=Can build libpayload for rush. Original-Change-Id: I320b39a57b985d1f87446ea7757955664f8dba8f Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/204402 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit 0080df41b311ef20f9214b386fa4e38ee54aa1a1) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I9a0bb3848cf5286f9f4bb08172a9f4a15278348e Reviewed-on: http://review.coreboot.org/8117 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-12-30libpayload: don't dereference null pointer in exception handlerPatrick Georgi
Change-Id: I93e5e2488ddd616c91769beb1acd96f8ebd7d505 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Found-by: Coverity Scan Reviewed-on: http://review.coreboot.org/7971 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <gaumless@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-12-09libpayload: Make it possible to install callbacks for particular exceptions.Gabe Black
To support a GDB stub, it will be necessary to trap various exceptions which will be used to implement breakpoints, single stepping, etc. BUG=None TEST=Built and booted on Link with hooks installed and saw that they triggered when exceptions occurred. Built and booted on nyan. BRANCH=None Original-Change-Id: Iab659365864a3055159a50b8f6e5c44290d3ba2b Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/179602 Original-Reviewed-by: Gabe Black <gabeblack@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 8db0897b1ddad600e247cb4df147c757a8187626) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I5e7f724b99988cd259909dd3bd01166fa52317ec Reviewed-on: http://review.coreboot.org/7656 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-09-15libpayload: x86: Add support for catching processor exceptions.Gabe Black
This functionality is already available for ARM, so lets add it to x86 as well. We'll want to be able to hook exceptions when running as a remote GDB target. Change-Id: I42f640b08eb9eb86a1bcab3c327f7780191a2eb5 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/179601 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 5b8cf0c9f70a7e14766a2b095e6739a8d6321a34) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6898 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>