Boyan Karatotev [Wed, 26 Oct 2022 14:10:39 +0000 (15:10 +0100)]
fix(pmu): add sensible default for MDCR_EL2
When TF-A is set to save and restore EL2 registers it initially zeroes
all of them so that it does not leak any information. However,
MDCR_EL2.HPMN of 0 is poorly defined when FEAT_HPMN0 is not implemented.
Set it to its hardware reset value so that lower ELs don't inherit a
wrong value.
Arm has decided to deprecate the TC0 platform. The development of
software and fast models for TC0 platform has been discontinued.
TC0 platform has been superseded by the TC1 and TC2 platforms,
which are already supported in TF-A and CI repositories.
Change-Id: I0269816a6ee733f732669027eae4e14cd60b6084 Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Govindraj Raja [Thu, 10 Nov 2022 15:27:35 +0000 (15:27 +0000)]
chore(docs): fix broken url references to arm procedure call
Couple for urls under section: `5.6. Use of built-in C and libc
data types` from docs has broken urls since the new arm procedure
call doc is moved to be part of `ARM-software/abi-aa`.
Change-Id: Ied184ed56c8335d4cbc687e56962439091a18e42 Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
Boyan Karatotev [Tue, 1 Nov 2022 11:22:12 +0000 (11:22 +0000)]
fix(cpus): workaround for Cortex-A77 erratum 2743100
Cortex-A77 erratum 2743100 is a Cat B erratum that applies to revisions
r0p0, r1p0, r1p1, and is still open. The workaround is to insert a dsb
before the isb in the power down sequence.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1152370/latest
Okash Khawaja [Fri, 4 Nov 2022 12:38:01 +0000 (12:38 +0000)]
feat(cpus): make cache ops conditional
When a core is in debug recovery mode its caches are not invalidated
upon reset, so the L1 and L2 cache contents from before reset are
observable after reset. Similarly, debug recovery mode of DynamIQ
cluster ensures that contents of the shared L3 cache are also not
invalidated upon transition to On mode.
Booting cores in debug recovery mode means booting with caches disabled
and preserving the caches until a point where software can dump the
caches and retrieve their contents. TF-A however unconditionally cleans
and invalidates caches at multiple points during boot. This can lead to
memory corruption as well as loss of cache contents to be used for
debugging.
This patch fixes this by calling a platform hook before performing CMOs
in helper routines in cache_helpers.S. The platform hook plat_can_cmo is
an assembly routine which must not clobber x2 and x3, and avoid using
stack. The whole checking is conditional upon `CONDITIONAL_CMO` which
can be set at compile time.
instead of it being lost in the middle of supported platform ports.
Regarding a), this gets moved under the "Processes & Policies" section.
More specifically, it gets clubbed with the existing platform
compatibility policy. The combined document gets renamed into a
"Platforms Ports Policy" document.
Manish Pandey [Wed, 2 Nov 2022 16:30:09 +0000 (16:30 +0000)]
docs: document do_panic() and panic() helper functions
panic() and do_panic() are widely used helper functions called when
encountering a critical failure that cannot be recovered from.
Document them in porting guide. Also, remove panic() documentation
from PSCI guide(where it is unused anyways).
This patch adds the following changes to complete the existing
TRNG implementation:
1. Adds a feature specific scope for buildlog generation.
2. Updates the docs on the build flag "TRNG_SUPPORT" and its values.
3. Makefile update and improves the existing comments at few sections
for better understanding of the underlying logic.
- Remove mentions of Arm SGM-775 and MediaTek MT6795 platforms.
Both platform ports were deleted from TF-A source tree in the
last release (v2.7).
- Remove mention of Arm Morello platform, as it now has a dedicated
documentation page accessible from the table of contents
(see docs/plat/arm/morello/).
Manish Pandey [Mon, 10 Oct 2022 10:43:08 +0000 (11:43 +0100)]
fix(ras): restrict RAS support for NS world
Current RAS framework in TF-A only supports handling errors originating
from NS world but the HANDLE_EA_EL3_FIRST flag configures it for all
lower Els. To make the current design of RAS explicit, rename this macro
to HANDLE_EA_EL3_FIRST_NS and set EA bit in scr_el3 only when
switching to NS world.
Note: I am unaware of any platform which traps errors originating in
Secure world to EL3, if there is any such platform then it need to
be explicitly implemented in TF-A
Manish Pandey [Tue, 1 Nov 2022 16:16:55 +0000 (16:16 +0000)]
fix(debug): decouple "get_el_str()" from backtrace
get_el_str() was implemented under ENABLE_BACKTRACE macro but being
used at generic places too, this causes multiple definition of this
function.
Remove duplicate definition of this function and move it out of
backtrace scope. Also, this patch fixes a small bug where in default
case S-EL1 is returned which ideally should be EL1, as there is no
notion of security state in EL string.
Olivier Deprez [Tue, 11 Oct 2022 13:38:27 +0000 (15:38 +0200)]
feat: pass SMCCCv1.3 SVE hint bit to dispatchers
SMCCCv1.3 introduces the SVE hint bit added to the SMC FID (bit 16)
denoting that the world issuing an SMC doesn't expect the callee to
preserve the SVE state (FFR, predicates, Zn vector bits greater than
127). Update the generic SMC handler to copy the SVE hint bit state
to SMC flags and mask out the bit by default for the services called
by the standard dispatcher. It is permitted by the SMCCC standard to
ignore the bit as long as the SVE state is preserved. In any case a
callee must preserve the NEON state (FPCR/FPSR, Vn 128b vectors)
whichever the SVE hint bit state.
Manish Pandey [Tue, 11 Oct 2022 16:28:14 +0000 (17:28 +0100)]
fix(bl31): harden check in delegate_async_ea
Following hardening done around ESR_EL3 register usage
- Panic if exception is anyting other than SError
- AET bit is only valid if DFSC is 0x11, move DFSC check before AET.
Marc Bonnici [Tue, 18 Oct 2022 13:03:13 +0000 (14:03 +0100)]
fix(el3-spmc): check descriptor size for overflow
Ensure that the provided descriptor size used when reserving space
for a memory descriptor does not overflow to prevent scope for
memory corruption. Reported by Matt Oh, Google Android Red Team.
Reported-by: mattoh@google.com Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: If06985c4de9a88ff82ce60d10e346da948ed383f
Marc Bonnici [Tue, 18 Oct 2022 12:50:04 +0000 (13:50 +0100)]
fix(el3-spmc): fix detection of overlapping memory regions
The current logic does not cover all scenarios of overlapping
memory regions. Update the implementation to verify non-overlapping
regions instead. Reported by Matt Oh, Google Android Red Team.
Reported-by: mattoh@google.com Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I16c53d081e4455bc0e28399d28a1b27b1a9eb49c
Marc Bonnici [Tue, 18 Oct 2022 12:39:48 +0000 (13:39 +0100)]
fix(el3-spmc): fix incomplete reclaim validation
Ensure that the full memory transaction descriptor has been transmitted
before a request to reclaim the memory transaction is permitted.
This prevents any potential accesses to the incomplete descriptor.
Reported by Matt Oh, Google Android Red Team.
Reported-by: mattoh@google.com Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I33e993c6b754632051e899ab20edd19b18b6cf65
This change updates the version of the Node Version Manager suggested by
the prerequisites documentation. The NVM installation command line hint
has been replaced with the snippet provided by NVM's user guide, and the
second line now automatically installs a version of Node.js compatible
with TF-A's repository scripts.
Change-Id: I6ef5e504118238716ceb45a52083450c424c5d20 Signed-off-by: Chris Kay <chris.kay@arm.com>
Olivier Deprez [Fri, 4 Nov 2022 09:47:54 +0000 (10:47 +0100)]
Merge changes from topic "hikey960-el3-spmc" into integration
* changes:
feat(hikey960): read serial number from UFS
feat(hikey960): add a FF-A logical partition
feat(hikey960): add memory sharing hooks for SPMC_AT_EL3
feat(hikey960): add plat-defines for SPMC_AT_EL3
feat(hikey960): define a datastore for SPMC_AT_EL3
feat(hikey960): add SP manifest for SPMC_AT_EL3
feat(hikey960): increase secure workspace to 64MB
feat(hikey960): upgrade to xlat_tables_v2
Bipin Ravi [Wed, 2 Nov 2022 21:50:03 +0000 (16:50 -0500)]
fix(cpus): workaround for Cortex-A76 erratum 2743102
Cortex-A76 erratum 2743102 is a Cat B erratum that applies to
all revisions <=r4p1 and is still open. The workaround is to
insert a dsb before the isb in the power down sequence.
Bipin Ravi [Wed, 2 Nov 2022 21:12:01 +0000 (16:12 -0500)]
fix(cpus): workaround for Neoverse N1 erratum 2743102
Neoverse N1 erratum 2743102 is a Cat B erratum that applies to
all revisions <=r4p1 and is still open. The workaround is to
insert a dsb before the isb in the power down sequence.
feat(drtm): add DRTM parameters structure version check
Added DRTM parameters structure version check that as per
the current released DRTM specification [1].
Mainly to cater below mentioned in the specification [1]
section 3.12 -
For a given DRTM major version number this structure will
always be extended in a backwards compatible manner.
vallau01 [Mon, 8 Aug 2022 12:10:14 +0000 (14:10 +0200)]
fix(el3-spmc): compute full FF-A V1.1 desc size
This patch fixes an issue in spmc_ffa_fill_desc.
In order to compute the spmc_shm_get_v1_1_descriptor_size,
fragment_length which is a fraction of the descriptor size is used as
desc_size parameter. It has to be replaced with the
full V1.0 descriptor size(obj->desc_filled).
Boyan Karatotev [Mon, 3 Oct 2022 13:21:28 +0000 (14:21 +0100)]
fix(cpus): workaround for Cortex-A710 erratum 2291219
Cortex-A710 erratum 2291219 is a Cat B erratum that applies to revisions
r0p0, r1p0, and r2p0, and is fixed in r2p1. The workaround is to set
CPUACTLR2_EL1[36] to 1 before the power down sequence that sets
CORE_PWRDN_EN. This allows the cpu to retry the power down and prevents
the deadlock. TF-A never clears this bit even if it wakes up from the
wfi in the sequence since it is not expected to do anything but retry to
power down after and the bit is cleared on reset.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest
Boyan Karatotev [Mon, 3 Oct 2022 13:18:28 +0000 (14:18 +0100)]
fix(cpus): workaround for Cortex-X3 erratum 2313909
Cortex-X3 erratum 2313909 is a Cat B erratum that applies to revisions
r0p0 and r1p0, and is fixed in r1p1. The workaround is to set
CPUACTLR2_EL1[36] to 1 before the power down sequence that sets
CORE_PWRDN_EN. This allows the cpu to retry the power down and prevents
the deadlock. TF-A never clears this bit even if it wakes up from the
wfi in the sequence since it is not expected to do anything but retry to
power down after and the bit is cleared on reset.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN2055130/latest
Boyan Karatotev [Mon, 3 Oct 2022 13:07:08 +0000 (14:07 +0100)]
fix(cpus): workaround for Neoverse-N2 erratum 2326639
Neoverse-N2 erratum 2326639 is a Cat B erratum that applies to revision
r0p0 and is fixed in r0p1. The workaround is to set CPUACTLR2_EL1[36] to
1 before the power down sequence that sets CORE_PWRDN_EN. This allows
the cpu to retry the power down and prevents the deadlock. TF-A never
clears this bit even if it wakes up from the wfi in the sequence since
it is not expected to do anything but retry to power down after and the
bit is cleared on reset.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest/
Platforms which implement pwr_domain_pwr_down_wfi differ substantially
in behaviour. However, different cpus require similar sequences to power
down. This patch tightens the behaviour of these platforms to end on a
wfi loop after performing platform power down. This is required so that
platforms behave more consistently on power down, in cases where the wfi
can fall through.
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