Commit 8984fba2f2 added setting the
EFI_MEMORY_XP attribute on DMA buffers. However, it did not ensure
that the XP capability was set on that region.
This patch adds setting the XP capability before attempting to set
the attribute. If setting the capability fails, it defaults to the
old behavior of not setting the XP bit.
Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
When allocating memory for a non-coherent DMA device, the current core
code removes the XP attribute, allowing code to execute from that
region. This is a security vulnerability and unneeded. This change
updates to mark the region as XP when allocating memory for the
non-coherent DMA device.
Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
__FUNCTION__ is a pre-standard extension that gcc and Visual C++ among
others support, while __func__ was standardized in C99.
Since it's more standard, replace __FUNCTION__ with __func__ throughout
EmbeddedPkg.
Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Abner Chang <abner.chang@amd.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737
Apply uncrustify changes to .c/.h files in the EmbeddedPkg package
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Andrew Fish <afish@apple.com>
Map->Operation is used to select whether a DMA region that
is being bounced has the source buffer copied to it. Except
Map->Operation isn't yet set, so the behavior is somewhat
random. Instead use the passed in Operation parameter.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
The bounce buffering code in NonCoherentDmaLib copies data into the
bounce buffer using CopyMem(), but passes Map->HostAddress as the
source of the copy before it has been assigned its correct value.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Andrei Warkentin <awarkentin@vmware.com>
Implement support for driving peripherals with limited DMA ranges to
NonCoherentDmaLib, by adding a device address limit, and taking it,
along with the device offset, into account when allocating or mapping
DMA buffers.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Pete Batard <pete@akeo.ie>
Acked-by: Philippe Mathieu-Daude <philmd@redhat.com>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
The non-coherent DmaLib implementation in ArmDmaLib no longer relies on
anything in ArmPkg. So clone it into EmbeddedPkg, and rename it to
NonCoherentDmaLib.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Oliver Smith-Denny
Oliver Smith-Denny
Rebecca Cran
Michael Kubacki
Jeremy Linton
Ard Biesheuvel
Ard Biesheuvel
Michael D Kinney