| 34c51f32 | 26-Jan-2023 |
Boyan Karatotev <boyan.karatotev@arm.com> |
feat(cpus): wrappers to propagate AArch32 errata info
AArch32 is not being ported to the errata framework. However, the
runtime errata list is needed at runtime for the upcoming errata ABI.
Add wrap
feat(cpus): wrappers to propagate AArch32 errata info
AArch32 is not being ported to the errata framework. However, the
runtime errata list is needed at runtime for the upcoming errata ABI.
Add wrappers to populate this information and make it accessible in the
same way as AArch64.
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I084720f34d6ed4e00e94b09babd3c90a5393298a
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| 4f748cc4 | 27-Jan-2023 |
Boyan Karatotev <boyan.karatotev@arm.com> |
feat(cpus): add a way to automatically report errata
Using the errata framework per-cpu data structure, errata can all be
reported automatically through a single standard errata reporter which
can r
feat(cpus): add a way to automatically report errata
Using the errata framework per-cpu data structure, errata can all be
reported automatically through a single standard errata reporter which
can replace the cpu-specific ones.
This reporter can also enforce the ordering requirement of errata.
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I7d2d5ac5bcb9d21aed0d560d7d23919a323ffdab
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| 3f4c1e1e | 27-Jan-2023 |
Boyan Karatotev <boyan.karatotev@arm.com> |
feat(cpus): add a concise way to implement AArch64 errata
Errata implementation involves adding a lot of boilerplate to random
places with just conventions on how to do them. Copy pasting is the
usu
feat(cpus): add a concise way to implement AArch64 errata
Errata implementation involves adding a lot of boilerplate to random
places with just conventions on how to do them. Copy pasting is the
usual method for doing this. The result is an error-prone and verbose
patch that is a nightmare to get through review.
Errata workarounds have a very large degree of similarity - most of them
involve setting a bit at reset. As such most of the boilerplate is not
strictly necessary. To solve this, add a collection of assembly macros
to wrap errata implementations such that only the actual mitigations
need to be written. A new erratum mitigation looks something like:
workaround_reset_start cortex_a77, ERRATUM(1925769), ERRATA_A77_1925769
sysreg_bit_set CORTEX_A77_CPUECTLR_EL1, CORTEX_A77_CPUECTLR_EL1_BIT_8
workaround_reset_end cortex_a77, ERRATUM(1925769)
check_erratum_ls cortex_a77, ERRATUM(1925769), CPU_REV(1, 1)
Note, that the long comment on every mitigation is missing. This is on
purpose, as this new format includes all of its contents into an easily
readable format.
The workaround wrappers add an erratum entry (24 bytes) to a per-cpu
data structure which can then be read by a standard reset function to
apply all errata automatically. This has the added benefit of collecting
all errata TF-A knows about in a central way, which was previously
missing. This can then be used at runtime with the errata ABI.
If an erratum doesn't fit this standard definition (eg. the
CVE_2022_23960), it can progressively be unwrapped to the old
convention. The only differences are that the naming format is slightly
more verbose and a call to add_erratum_entry is needed to inform the
framework about the errata.
Finally, the internal workaround names change a tiny bit, especially
CVEs.
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: Iac644f85dcf85b8279b25e83baf1e7d08b253b16
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| dd9fae1c | 25-Jan-2023 |
Boyan Karatotev <boyan.karatotev@arm.com> |
refactor(cpus): convert print_errata_status to C
The function is called in a fully initialised C environment and calls
into other C functions. The Aarch differences are minimal and are hidden
by the
refactor(cpus): convert print_errata_status to C
The function is called in a fully initialised C environment and calls
into other C functions. The Aarch differences are minimal and are hidden
by the pre-existing headers. Converting it results into cleaner code
that is the same across both Aarch64 and Aarch32.
To avoid having to do very ugly pointer arithmetic, define a C struct
for the cpu_ops for both Aarch64 and Aarch32.
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: Idc07c4064e03143c88a4a0e2d10ceda70ba19a50
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| 6bb96fa6 | 27-Jan-2023 |
Boyan Karatotev <boyan.karatotev@arm.com> |
refactor(cpus): rename errata_report.h to errata.h
The ERRATA_XXX macros, used in cpu_helpers.S, are necessary for the
check_errata_xxx family of functions. The CPU_REV should be used in the
cpu fil
refactor(cpus): rename errata_report.h to errata.h
The ERRATA_XXX macros, used in cpu_helpers.S, are necessary for the
check_errata_xxx family of functions. The CPU_REV should be used in the
cpu files but for whatever reason the values have been hard-coded so far
(at the cost of readability). It's evident this file is not strictly for
status reporting.
The new purpose of this file is to make it a one-stop-shop for all
things errata.
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I1ce22dd36df5aa0bcfc5f2772251f91af8703dfb
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| 6578343b | 13-Mar-2023 |
Govindraj Raja <govindraj.raja@arm.com> |
feat(cpus): add support for blackhawk cpu
Add basic CPU library code to support the Blackhawk CPU,
BlackHawk core is based out of Hunter ELP core,
so overall library code was adapted based on that.
feat(cpus): add support for blackhawk cpu
Add basic CPU library code to support the Blackhawk CPU,
BlackHawk core is based out of Hunter ELP core,
so overall library code was adapted based on that.
Change-Id: I4750e774732218ee669dceb734cd107f46b78492
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
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