Commit Graph

1100 Commits

Author SHA1 Message Date
Scott Branden 4ce3e99a33 fix: libc: use long for 64-bit types on aarch64
Use long instead of long long on aarch64 for 64_t stdint types.
Introduce inttypes.h to properly support printf format specifiers for
fixed width types for such change.

Change-Id: I0bca594687a996fde0a9702d7a383055b99f10a1
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
2021-11-08 14:41:17 +00:00
Chris Kay 2062a3936f fix(amu): remove `amu_fconf.c`
This file is unused and was introduced accidentally by one of the
commits in the MPMM patch stack. This functionality was instead
introduced by `fconf_amu_getter.c`.

Change-Id: Ib15b1114bacf9a2e7414c1fb35bd4fbdf0179210
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-11-01 11:13:24 +00:00
Manish Pandey 6482255d5d Merge "refactor(fvp_r): remove unused files and clean up makefiles" into integration 2021-10-29 18:48:52 +02:00
johpow01 88c227374c refactor(fvp_r): remove unused files and clean up makefiles
This patch removes files that are not used by TF-R as well as
removes unused generic files from the TF-R makefile.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Idb15ac295dc77fd38735bf2844efdb73e6f7c89b
2021-10-29 09:43:19 -05:00
Chris Kay 68120783d6 feat(mpmm): add support for MPMM
MPMM - the Maximum Power Mitigation Mechanism - is an optional
microarchitectural feature present on some Armv9-A cores, introduced
with the Cortex-X2, Cortex-A710 and Cortex-A510 cores.

MPMM allows the SoC firmware to detect and limit high activity events
to assist in SoC processor power domain dynamic power budgeting and
limit the triggering of whole-rail (i.e. clock chopping) responses to
overcurrent conditions.

This feature is enabled via the `ENABLE_MPMM` build option.
Configuration can be done via FCONF by enabling `ENABLE_MPMM_FCONF`, or
by via the plaform-implemented `plat_mpmm_topology` function.

Change-Id: I77da82808ad4744ece8263f0bf215c5a091c3167
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:15:42 +01:00
Chris Kay 742ca2307f feat(amu): enable per-core AMU auxiliary counters
This change makes AMU auxiliary counters configurable on a per-core
basis, controlled by `ENABLE_AMU_AUXILIARY_COUNTERS`.

Auxiliary counters can be described via the `HW_CONFIG` device tree if
the `ENABLE_AMU_FCONF` build option is enabled, or the platform must
otherwise implement the `plat_amu_topology` function.

A new phandle property for `cpu` nodes (`amu`) has been introduced to
the `HW_CONFIG` specification to allow CPUs to describe the view of
their own AMU:

```
cpu0: cpu@0 {
    ...

    amu = <&cpu0_amu>;
};
```

Multiple cores may share an `amu` handle if they implement the
same set of auxiliary counters.

AMU counters are described for one or more AMUs through the use of a new
`amus` node:

```
amus {
    cpu0_amu: amu-0 {
        #address-cells = <1>;
        #size-cells = <0>;

        counter@0 {
            reg = <0>;

            enable-at-el3;
        };

        counter@n {
            reg = <n>;

            ...
        };
    };
};
```

This structure describes the **auxiliary** (group 1) AMU counters.
Architected counters have architecturally-defined behaviour, and as
such do not require DTB entries.

These `counter` nodes support two properties:

- The `reg` property represents the counter register index.
- The presence of the `enable-at-el3` property determines whether
  the firmware should enable the counter prior to exiting EL3.

Change-Id: Ie43aee010518c5725a3b338a4899b0857caf4c28
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:15:33 +01:00
Chris Kay e747a59be4 refactor(amu): refactor enablement and context switching
This change represents a general refactoring to clean up old code that
has been adapted to account for changes required to enable dynamic
auxiliary counters.

Change-Id: Ia85e0518f3f65c765f07b34b67744fc869b9070d
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:33 +01:00
Chris Kay 31d3cc2570 refactor(amu): detect auxiliary counters at runtime
This change decouples the group 1 counter macros to facilitate dynamic
detection at runtime. These counters remain disabled - we will add
dynamic enablement of them in a later patch.

Change-Id: I820d05f228d440643bdfa308d030bd51ebc0b35a
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:33 +01:00
Chris Kay 81e2ff1f36 refactor(amu): detect architected counters at runtime
This change removes the `AMU_GROUP0_COUNTERS_MASK` and
`AMU_GROUP0_MAX_COUNTERS` preprocessor definitions, instead retrieving
the number of group 0 counters dynamically through `AMCGCR_EL0.CG0NC`.

Change-Id: I70e39c30fbd5df89b214276fac79cc8758a89f72
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:32 +01:00
Chris Kay 1fd685a74d refactor(amu): conditionally compile auxiliary counter support
This change reduces preprocessor dependencies on the
`AMU_GROUP1_NR_COUNTERS` and `AMU_GROUP1_COUNTERS_MASK` definitions, as
these values will eventually be discovered dynamically.

In their stead, we introduce the `ENABLE_AMU_AUXILIARY_COUNTERS` build
option, which will enable support for dynamically detecting and
enabling auxiliary AMU counters.

This substantially reduces the amount of memory used by platforms that
know ahead of time that they do not have any auxiliary AMU counters.

Change-Id: I3d998aff44ed5489af4857e337e97634d06e3ea1
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:32 +01:00
Chris Kay 33b9be6d75 refactor(amu): factor out register accesses
This change introduces a small set of register getters and setters to
avoid having to repeatedly mask and shift in complex code.

Change-Id: Ia372f60c5efb924cd6eeceb75112e635ad13d942
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:31 +01:00
Chris Kay b4b726ea86 refactor(amu)!: privatize unused AMU APIs
This change reduces the exposed surface area of the AMU API in order to
simplify the refactoring work in following patches. The functions and
definitions privatized by this change are not used by other parts of the
code-base today.

BREAKING CHANGE: The public AMU API has been reduced to enablement only
to facilitate refactoring work. These APIs were not previously used.

Change-Id: Ibf6174fb5b3949de3c4ba6847cce47d82a6bd08c
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:31 +01:00
Chris Kay 9b43d098d8 build(amu): introduce `amu.mk`
This change introduces the `amu.mk` Makefile, used to remove the need
to manually include AMU sources into the various build images.
Makefiles requiring the list of AMU sources are expected to include
this file and use `${AMU_SOURCES}` to retrieve them.

Change-Id: I3d174033ecdce6439a110d776f0c064c67abcfe0
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:30 +01:00
Chris Kay e04da4c8e1 build(fconf)!: clean up source collection
Including the FCONF Makefile today automatically places the FCONF
sources into the source list of the BL1 and BL2 images. This may be
undesirable if, for instance, FCONF is only required for BL31.

This change moves the BL1 and BL2 source appends out of the common
Makefile to where they are required.

BREAKING CHANGE: FCONF is no longer added to BL1 and BL2 automatically
when the FCONF Makefile (`fconf.mk`) is included. When including this
Makefile, consider whether you need to add `${FCONF_SOURCES}` and
`${FCONF_DYN_SOURCES}` to `BL1_SOURCES` and `BL2_SOURCES`.

Change-Id: Ic028eabb7437ae95a57c5bcb7821044d31755c77
Signed-off-by: Chris Kay <chris.kay@arm.com>
2021-10-26 12:14:29 +01:00
johpow01 4cb576a0c5 fix(cpu): correct Demeter CPU name
This patch changes Cortex Demeter to Neoverse Demeter.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I7306d09ca60e101d0a96c9ceff9845422d75c160
2021-10-21 20:12:28 +02:00
johpow01 fb9e5f7bb7 feat(cpu): add support for Hunter CPU
This patch adds the basic CPU library code to support the Hunter CPU
in TF-A. This CPU is based on the Makalu core so that library code
was adapted as the basis for this patch.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I956b2dc0f43da7cec3e015252392e2694363e1b3
2021-10-20 20:05:59 +02:00
Manish Pandey 33d99fdb48 Merge "fix(lib/optee): correct signedness comparison" into integration 2021-10-19 22:22:55 +02:00
Manish Pandey 0271be0dab Merge "feat(psci): require validate_power_state to expose CPU_SUSPEND" into integration 2021-10-18 18:28:55 +02:00
Manish Pandey 392547c365 Merge "fix(errata_report): correct typo" into integration 2021-10-18 18:26:54 +02:00
Samuel Holland a1d5ac6a5a feat(psci): require validate_power_state to expose CPU_SUSPEND
psci_cpu_suspend unconditionally calls psci_validate_power_state, which
asserts that the platform implements ops->validate_power_state. To avoid
a failure at runtime, do not expose CPU_SUSPEND unless that callback is
implemented. This also allows a platform to provide SYSTEM_SUSPEND
without providing CPU_SUSPEND.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I5dafb7845f482ab3af03a9de562def41dd70189e
2021-10-15 14:13:54 +02:00
Manish V Badarkhe eab78e9ba4 refactor(measured_boot): remove passing of BL2 hash via device tree
Subsequent patches will provide a solution to do the BL2 hash measurement
and recording in BL1 itself, hence in preparation to adopt that solution
remove the logic of passing BL2 hash measurement to BL2 component
via TB_FW config.

Change-Id: Iff9b3d4c6a236a33b942898fcdf799cbab89b724
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
2021-10-12 17:53:47 +01:00
Yann Gautier 21d2be83a2 fix(lib/optee): correct signedness comparison
Avoid compilation errors with -Wsign-compare :
"comparison of integer expressions of different signedness"
by changing type of num to uint32_t.
And change init_load_addr check.

Change-Id: I891e4a288a964ffdb52129813ba8652c5bcf85b2
Signed-off-by: Yann Gautier <yann.gautier@st.com>
2021-10-07 18:08:01 +02:00
Soby Mathew 1d65121174 Merge changes from topic "za/feat_rme" into integration
* changes:
  refactor(gpt): productize and refactor GPT library
  feat(rme): disable Watchdog for Arm platforms if FEAT_RME enabled
  docs(rme): add build and run instructions for FEAT_RME
  fix(plat/fvp): bump BL2 stack size
  fix(plat/fvp): allow changing the kernel DTB load address
  refactor(plat/arm): rename ARM_DTB_DRAM_NS region macros
  refactor(plat/fvp): update FVP platform DTS for FEAT_RME
  feat(plat/arm): add GPT initialization code for Arm platforms
  feat(plat/fvp): add memory map for FVP platform for FEAT_RME
  refactor(plat/arm): modify memory region attributes to account for FEAT_RME
  feat(plat/fvp): add RMM image support for FVP platform
  feat(rme): add GPT Library
  feat(rme): add ENABLE_RME build option and support for RMM image
  refactor(makefile): remove BL prefixes in build macros
  feat(rme): add context management changes for FEAT_RME
  feat(rme): add Test Realm Payload (TRP)
  feat(rme): add RMM dispatcher (RMMD)
  feat(rme): run BL2 in root world when FEAT_RME is enabled
  feat(rme): add xlat table library changes for FEAT_RME
  feat(rme): add Realm security state definition
  feat(rme): add register definitions and helper functions for FEAT_RME
2021-10-06 19:44:28 +02:00
Yann Gautier 322e60a6c7 fix(errata_report): correct typo
Change wrong __arch64__ to __aarch64__.

Change-Id: I750fdb16958e0eadf8aebe24bec0e14488fa4787
Signed-off-by: Yann Gautier <yann.gautier@st.com>
2021-10-06 17:35:39 +02:00
johpow01 f19dc624a1 refactor(gpt): productize and refactor GPT library
This patch updates and refactors the GPT library and fixes bugs.

- Support all combinations of PGS, PPS, and L0GPTSZ parameters.
- PPS and PGS are set at runtime, L0GPTSZ is read from GPCCR_EL3.
- Use compiler definitions to simplify code.
- Renaming functions to better suit intended uses.
- MMU enabled before GPT APIs called.
- Add comments to make function usage more clear in GPT library.
- Added _rme suffix to file names to differentiate better from the
  GPT file system code.
- Renamed gpt_defs.h to gpt_rme_private.h to better separate private
  and public code.
- Renamed gpt_core.c to gpt_rme.c to better conform to TF-A precedent.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I4cbb23b0f81e697baa9fb23ba458aa3f7d1ed919
2021-10-05 16:24:57 -05:00
Madhukar Pappireddy de278f333b Merge "fix(errata): workaround for Cortex-A710 erratum 2058056" into integration 2021-10-05 23:17:19 +02:00
Madhukar Pappireddy e2f4b434b0 Merge changes If7dec725,Iedcb84a7,Ife0a4bec into integration
* changes:
  errata: workaround for Cortex-A78 erratum 2132060
  errata: workaround for Neoverse-V1 erratum 2108267
  fix(errata): workaround for Neoverse-N2 erratum 2138953
2021-10-05 21:02:00 +02:00
Zelalem Aweke 1839012d5b feat(rme): add GPT Library
This patch introduces the Granule Protection Table (GPT)
library code. This implementation will be updated later to
be more flexible, as the current implementation is very rigid.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I3af824a28c6e9a5d36459c0c51d2d9bebfba1505
2021-10-05 11:56:00 -05:00
Zelalem Aweke c5ea4f8a66 feat(rme): add context management changes for FEAT_RME
This patch adds a new context for realm world and realm world
awareness in context management.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Signed-off-by: Subhasish Ghosh <subhasish.ghosh@arm.com>
Change-Id: Ic17469393603e789d7adc025880346bc3d6233d7
2021-10-05 18:41:35 +02:00
Zelalem Aweke 6c09af9f8b feat(rme): run BL2 in root world when FEAT_RME is enabled
This patch enables BL2 to run in root world (EL3) which is
needed as per the security model of RME-enabled systems.

Using the existing BL2_AT_EL3 TF-A build option is not convenient
because that option assumes TF-A BL1 doesn't exist, which is not
the case for RME-enabled systems. For the purposes of RME, we use
a normal BL1 image but we also want to run BL2 in EL3 as normally as
possible, therefore rather than use the special bl2_entrypoint
function in bl2_el3_entrypoint.S, we use a new bl2_entrypoint
function (in bl2_rme_entrypoint.S) which doesn't need reset or
mailbox initialization code seen in the el3_entrypoint_common macro.

The patch also cleans up bl2_el3_entrypoint.S, moving the
bl2_run_next_image function to its own file to avoid duplicating
code.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I99821b4cd550cadcb701f4c0c4dc36da81c7ef55
2021-10-04 21:13:20 +02:00
Zelalem Aweke 362182386b feat(rme): add xlat table library changes for FEAT_RME
FEAT_RME adds a new bit (NSE) in the translation table descriptor
to determine the Physical Address Space (PAS) of an EL3 stage 1
translation according to the following mapping:

	TTD.NSE    TTD.NS  |  PAS
	=================================
	  0          0	   |  Secure
	  0	     1	   |  Non-secure
	  1	     0	   |  Root
	  1	     1	   |  Realm

This patch adds modifications to version 2 of the translation table
library accordingly. Bits 4 and 5 in mmap attribute are used to
determine the PAS.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I82790f6900b7a1ab9494c732eac7b9808a388103
2021-10-04 14:09:23 -05:00
Yann Gautier 74d720a026 fix(xlat): remove always true check in assert
This issue was found with Clang compiler:
lib/xlat_tables_v2/aarch32/xlat_tables_arch.c:206:34:
 error: result of comparison of constant 4294967296 with expression
 of type 'uintptr_t' (aka 'unsigned long') is always true
 [-Werror,-Wtautological-constant-out-of-range-compare]
                assert(virtual_addr_space_size <=
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~

On AARCH32, MAX_VIRT_ADDR_SPACE_SIZE is defined as 1 << 32, and a 32 bit
uintptr_t is always lower.
Just remove the assert line.

Change-Id: Iec2c05290cede6e9fedbbf7b7dff2118bd1f9b16
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
2021-10-04 12:43:38 +02:00
Zelalem Aweke 81c272b3b7 feat(rme): add register definitions and helper functions for FEAT_RME
This patch adds new register and bit definitions for the Armv9-A
Realm Management Extension (RME) as described in the Arm
document DDI0615 (https://developer.arm.com/documentation/ddi0615/latest).

The patch also adds TLB maintenance functions and a function to
detect the presence of RME feature.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I03d2af7ea41a20a9e8a362a36b8099e3b4d18a11
2021-10-01 16:54:44 -05:00
nayanpatel-arm b36fe21243 errata: workaround for Cortex-A78 erratum 2132060
Cortex-A78 erratum 2132060 is a Cat B erratum that applies to
revisions r0p0, r1p0, r1p1, and r1p2 of CPU. It is still open.
The workaround is to write the value 2'b11 to the PF_MODE bits
in the CPUECTLR_EL1 register which will place the data prefetcher
in the most conservative mode instead of disabling it.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1401784/latest

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: If7dec72578633d37d110d103099e406c3a970ff7
2021-10-01 21:21:07 +02:00
nayanpatel-arm 8e140272fb errata: workaround for Neoverse-V1 erratum 2108267
Neoverse-V1 erratum 2108267 is a Cat B erratum that applies to
revisions r0p0, r1p0, and r1p1 of CPU. It is still open. The
workaround is to write the value 2'b11 to the PF_MODE bits in
the CPUECTLR_EL1 register which will place the data prefetcher
in the most conservative mode instead of disabling it.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1401781/latest

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: Iedcb84a7ad34af7083116818f49d7296f7d9bf94
2021-10-01 21:17:04 +02:00
nayanpatel-arm ef8f0c52dd fix(errata): workaround for Neoverse-N2 erratum 2138953
Neoverse-N2 erratum 2138953 is a Cat B erratum that applies to
revision r0p0 of CPU. It is still open. The workaround
is to write the value 4'b1001 to the PF_MODE bits in the
IMP_CPUECTLR2_EL1 register which will place the data prefetcher
in the most conservative mode instead of disabling it.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: Ife0a4bece7ccf83cc99c1d5f5b5a43084bb69d64
2021-10-01 12:01:20 -07:00
nayanpatel-arm 744bdbf732 fix(errata): workaround for Cortex-A710 erratum 2058056
Cortex-A710 erratum 2058056 is a Cat B erratum that applies to
revisions r0p0, r1p0, and r2p0. It is still open. The workaround
is to write the value 4'b1001 to the PF_MODE bits in the
IMP_CPUECTLR2_EL1 register which will place the data prefetcher
in the most conservative mode instead of disabling it.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: I7ce5181b3b469fbbb16501e633116e119b8bf4f1
2021-10-01 20:32:00 +02:00
Bipin Ravi fe82bcc04a Merge "feat(cpu): add support for Hayes CPU" into integration 2021-09-30 23:10:09 +02:00
johpow01 7bd8dfb85a feat(cpu): add support for Hayes CPU
This patch adds the basic CPU library code to support the Hayes CPU
in TF-A. This CPU is based on the Klein core so that library code
has been adapted for use here.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: If0e0070cfa77fee8f6eebfee13d3c4f209ad84fc
2021-09-30 19:30:39 +02:00
laurenw-arm e31fb0fa1b fvp_r: load, auth, and transfer from BL1 to BL33
Adding load, authentication, and transfer functionality from FVP R BL1 to
BL33, which will be the partner runtime code.

Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Change-Id: I293cad09739dacac0d20dd57c1d98178dbe84d40
2021-09-30 17:07:11 +01:00
Gary Morrison 5fb061e761 chore: fvp_r: Initial No-EL3 and MPU Implementation
For v8-R64, especially R82, creating code to run BL1 at EL2, using MPU.

Signed-off-by: Gary Morrison <gary.morrison@arm.com>
Change-Id: I439ac3915b982ad1e61d24365bdd1584b3070425
2021-09-30 17:05:59 +01:00
Bipin Ravi 114785c9b2 Merge "errata: workaround for Cortex-A710 erratum 2083908" into integration 2021-09-29 21:31:59 +02:00
johpow01 cb4ec47b5c feat(hcx): add build option to enable FEAT_HCX
FEAT_HCX adds the extended hypervisor configuration register (HCRX_EL2)
and access to this register must be explicitly enabled through the
SCR_EL3.HXEn bit.  This patch adds a new build flag ENABLE_FEAT_HCX to
allow the register to be accessed from EL2.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Ibb36ad90622f1dc857adab4b0d4d7a89456a522b
2021-09-27 17:07:52 +02:00
nayanpatel-arm 95fe195d53 errata: workaround for Cortex-A710 erratum 2083908
Cortex-A710 erratum 2083908 is a Cat B erratum that applies to
revision r2p0 and is still open. The workaround is to set
CPUACTLR5_EL1[13] to 1.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: I876d26a7ac6ab0d7c567a9ec9f34fc0f952589d8
2021-09-24 14:00:09 -07:00
Manish Pandey b3210f4ddb Merge changes from topic "TrcDbgExt" into integration
* changes:
  feat(plat/fvp): enable trace extension features by default
  feat(trf): enable trace filter control register access from lower NS EL
  feat(trf): initialize trap settings of trace filter control registers access
  feat(sys_reg_trace): enable trace system registers access from lower NS ELs
  feat(sys_reg_trace): initialize trap settings of trace system registers access
  feat(trbe): enable access to trace buffer control registers from lower NS EL
  feat(trbe): initialize trap settings of trace buffer control registers access
2021-09-17 11:36:43 +02:00
Etienne Carriere b84a850864 feat(lib/optee): introduce optee_header_is_valid()
This new function optee_header_is_valid() allows platform to know
whether OP-TEE OS is loaded from multi-image (using OP-TEE header
image as BL32_IMAGE_ID) or from a single OP-TEE binary image.
The function tee_validate_header() is reworked to return a boolean,
and is now silent.

Change-Id: Idc7dde091f2ada8898f40d02e68c3834ca39d8e8
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
2021-09-06 13:21:54 +02:00
Madhukar Pappireddy ef03e78f42 Merge changes from topic "erratas" into integration
* changes:
  errata: workaround for Neoverse N2 erratum 2138956
  errata: workaround for Neoverse N2 erratum 2189731
  errata: workaround for Cortex-A710 erratum 2017096
  errata: workaround for Cortex-A710 erratum 2055002
2021-09-03 23:58:01 +02:00
Bipin Ravi 1cafb08deb errata: workaround for Neoverse N2 erratum 2138956
Neoverse N2 erratum 2138956 is a Cat B erratum that applies to
revision r0p0 and is still open. This erratum can be avoided by
inserting a sequence of 16 DMB ST instructions prior to WFI or WFE.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I1aac87b3075992f875451e4767b21857f596d0b2
2021-09-03 15:44:56 -05:00
Bipin Ravi 7cfae93227 errata: workaround for Neoverse N2 erratum 2189731
Neoverse N2 erratum 2189731 is a Cat B erratum that applies to
revision r0p0 and is still open. The workaround is to set
CPUACTLR5_EL1[44] to 1 which will cause the CPP instruction to
invalidate the hardware prefetcher state trained from any EL.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Iddc6a59adf9fa3cab560c46f2133e1f5a8b3ad03
2021-09-03 15:44:56 -05:00
Bipin Ravi afc2ed63f9 errata: workaround for Cortex-A710 erratum 2017096
Cortex-A710 erratum 2017096 is a Cat B erratum that applies to
revisions r0p0, r1p0 & r2p0 and is still open. The workaround is to
set CPUECLTR_EL1[8] to 1 which disables store issue prefetching.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: If5f61ec30dbc2fab7f2c68663996057086e374e3
2021-09-03 15:44:56 -05:00