This patch introduces an additional precautionary step to further
enhance protection against variant 4. During the context initialisation
before we enter the various BL stages, the SPSR.SSBS bit is explicitly
set to zero. As such, speculative loads/stores are by default disabled
for all BL stages when they start executing. Subsequently, each BL
stage, can choose to enable speculative loads/stores or keep them
disabled.
This change doesn't affect the initial execution context of BL33 which
is totally platform dependent and, thus, it is intentionally left up to
each platform to initialise.
For Arm platforms, SPSR.SSBS is set to zero for BL33 too. This means
that, for Arm platforms, all BL stages start with speculative
loads/stores disabled.
Change-Id: Ie47d39c391d3f20fc2852fc59dbd336f8cacdd6c
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
Add uml sequence and class diagram to illustrate the behavior of the
storage abstraction layer.
Change-Id: I338262729f8034cc3d3eea1d0ce19cca973a91bb
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
When pointer authentication is enabled, the LR value saved on the stack
contains a Pointer Authentication Code (PAC). It must be stripped to
retrieve the return address.
The PAC field is stored on the high bits of the address and defined as:
- PAC field = Xn[54:bottom_PAC_bit], when address tagging is used.
- PAC field = Xn[63:56, 54:bottom_PAC_bit], without address tagging.
With bottom_PAC_bit = 64 - TCR_ELx.TnSZ
Change-Id: I21d804e58200dfeca1da4c2554690bed5d191936
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
This patch adds support for Cortex-A5 FVP for the
DesignStart program. DesignStart aims at providing
low cost and fast access to Arm IP.
Currently with this patch only the primary CPU is booted
and the rest of them wait for an interrupt.
Signed-off-by: Usama Arif <usama.arif@arm.com>
Change-Id: I3a2281ce6de2402dda4610a89939ed53aa045fab
Update the skeleton implementation of the console interface.
The 32 bit version was outdated and has been copied from the 64 bit
version.
Change-Id: Ib3e4eb09402ffccb1a30c703a53829a7bf064dfe
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
* changes:
Enable -Wshift-overflow=2 to check for undefined shift behavior
Update base code to not rely on undefined overflow behaviour
Update hisilicon drivers to not rely on undefined overflow behaviour
Update synopsys drivers to not rely on undefined overflow behaviour
Update imx platform to not rely on undefined overflow behaviour
Update mediatek platform to not rely on undefined overflow behaviour
Update layerscape platform to not rely on undefined overflow behaviour
Update intel platform to not rely on undefined overflow behaviour
Update rockchip platform to not rely on undefined overflow behaviour
Update renesas platform to not rely on undefined overflow behaviour
Update meson platform to not rely on undefined overflow behaviour
Update marvell platform to not rely on undefined overflow behaviour
Pass the ddrBackup variable around instead of making it a global variable.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: Ib796181247712e464b77f5f8be5f851745727d74
---
NOTE: The camelcase is fixed in later patch.
Partly inline ddr_init_e3.h into ddr_init_e3.c . Drop duplicate
INITDRAM_* macros, which are defined in boot_init_dram.h .
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I758661d337a86b6a07f82cd4067fbc149cbaed1e
Replace ad-hoc register accessors with generic ones, remove the ad-hoc
implementation. No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I21446a00a38c6a39d6a48652c34f59814074e831
Unify boot_init_dram_regdef_*.h into boot_init_dram_regdef.h and
clean up it's coding style a bit.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: Iae3375969c05f80209ebf7b1ebc3633a7f6317ff
Remove the ad-hoc BITn macros and replace them with generic BIT(n) macro.
No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I5d0b44d6cba5a69895fed505f6ff780d3574907f
Currently we have some pre-rendered versions of certain diagrams
in SVG format. These diagrams have corresponding PlantUML source
that can be rendered automatically as part of the documentation
build, removing the need for any intermediate files.
This patch adds the Sphinx "plantuml" extension, replaces
references to the pre-rendered SVG files within the documents,
and finally removes the SVG files and helper script.
New requirements for building the docs are the
"sphinxcontrib-plantuml" Python module (added to the pip
requirements.txt file) and the Graphviz package (provides the
"dot" binary) which is in the Ubuntu package repositories.
Change-Id: I24b52ee40ff79676212ed7cff350294945f1b50d
Signed-off-by: Paul Beesley <paul.beesley@arm.com>
Update the revision number in the revision management file.
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I94acd1bb53d9d2453e550e2a13b6391b9088ff8d
Modify PFC code and rename macro of MFIS according to Errata of
Hardware User's Manual
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I0ece522647319286350843bbbe8b8ba8b0ae9bac
As it turns out, Gerrit's merge commits don't always respect that format
so these mistakes have to be ignored as false positives.
Change-Id: I4e38d9c34c95588e7916fba4c154f017d8c92dec
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
The -Wshift-overflow=2 option enables checks for left bit shifts.
Specifically, the option will warn when the result of a shift will be
placed into a signed integer and overflow the sign bit there, which
results in undefined behavior.
To avoid the warnings from these checks, the left operand of a shift can
be made an unsigned integer by using the U() macro or appending the u
suffix.
Change-Id: I50c67bedab86a9fdb6c87cfdc3e784f01a22d560
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: Iddd6f38139a4c6e500468b4fc48d04e0939f574e
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: I67984b6c48c08af61e95a4dbd18047e2c3151f9a
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: I54560fe290e7dc52d364d0fe1c81a16f4c8d9a7b
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: Ia0a10b4a30e63c0cbf1d0f8dfe5768e0a93ae1c7
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: If5a88e1b880bcb2be2278398cf5109a6d877e632
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: Ib63ef6e2e4616dd56828bfd3800d5fe2df109934
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: I4c7a315cb18b3bbe623e7a7a998d2dac869638a7
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: Ib7fc54e4141cc4f1952a18241bc18671b36e2168
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
John Tsichritzis
Soby Mathew
Louis Mayencourt
Hadi Asyrafi
Usama Arif
Ambroise Vincent
Marek Vasut
Madhukar Pappireddy
Paul Beesley
Sandrine Bailleux
Toshiyuki Ogasahara
Chiaki Fujii
Justin Chadwell
Hiroyuki Nakano