summaryrefslogtreecommitdiff
path: root/lib/cpus
AgeCommit message (Collapse)Author
2018-06-21Merge pull request #1397 from dp-arm/dp/cortex-a76Dimitris Papastamos
Add support for Cortex-A76 and Cortex-Ares
2018-06-21Merge pull request #1405 from dp-arm/dp/cve_2017_5715Dimitris Papastamos
Fast path SMCCC_ARCH_WORKAROUND_1 calls from AArch32
2018-06-21Merge pull request #1392 from dp-arm/dp/cve_2018_3639Dimitris Papastamos
Implement workaround for CVE-2018-3639 on Cortex A57/A72/A73 and A75 Conflicts: services/arm_arch_svc/arm_arch_svc_setup.c
2018-03-14Fixup `SMCCC_ARCH_FEATURES` semanticsDimitris Papastamos
When querying `SMCCC_ARCH_WORKAROUND_1` through `SMCCC_ARCH_FEATURES`, return either: * -1 to indicate the PE on which `SMCCC_ARCH_FEATURES` is called requires firmware mitigation for CVE-2017-5715 but the mitigation is not compiled in. * 0 to indicate that firmware mitigation is required, or * 1 to indicate that no firmware mitigation is required. This patch complies with v1.2 of the firmware interfaces specification (ARM DEN 0070A). Change-Id: Ibc32d6620efdac6c340758ec502d95554a55f02a Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-03-14Use PFR0 to identify need for mitigation of CVE-2017-5715Dimitris Papastamos
If the CSV2 field reads as 1 then branch targets trained in one context cannot affect speculative execution in a different context. In that case skip the workaround on Cortex A72 and A73. Change-Id: Ide24fb6efc77c548e4296295adc38dca87d042ee Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-02-27MISRA fixes for Cortex A75 AMU implementationDimitris Papastamos
Change-Id: I61c9fdfda0c0b3c3ec6249519db23602cf4c2100 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-02-27Refactor AMU support for Cortex A75Dimitris Papastamos
This patch also fixes the assumption that the counters are disabled on the resume path. This is incorrect as the AMU counters are enabled early in the CPU reset function before `cpuamu_context_restore()` runs. Change-Id: I38a94eb166a523f00de18e86860434ffccff2131 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-02-27Factor out CPU AMU helpersDimitris Papastamos
This patch also fixes `cpuamu_write_cpuamcntenclr_el0()` to use an MSR instruction instead of an MRS instruction. Change-Id: Ia6531f64b5ebc60ba432124eaa8d8eaccba40ed0 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-02-22Fixup AArch32 errata printing frameworkSoby Mathew
The AArch32 assembly implementation of `print_errata_status` did not save a register which was getting clobbered by a `get_cpu_ops_ptr`. This patch fixes that. Change-Id: Id0711e46b7c685a18a10328d4b513e952a5d860b Signed-off-by: Soby Mathew <soby.mathew@arm.com>
2018-02-02Merge pull request #1253 from dp-arm/dp/amu32davidcunado-arm
AMUv1 support for AArch32
2018-01-31AMU: Implement context save/restore for aarch32Joel Hutton
Add amu_context_save() and amu_context_restore() functions for aarch32 Change-Id: I4df83d447adeaa9d9f203e16dc5a919ffc04d87a Signed-off-by: Joel Hutton <joel.hutton@arm.com>
2018-01-29Optimize SMCCC_ARCH_WORKAROUND_1 on Cortex A57/A72/A73 and A75Dimitris Papastamos
This patch implements a fast path for this SMC call on affected PEs by detecting and returning immediately after executing the workaround. NOTE: The MMU disable/enable workaround now assumes that the MMU was enabled on entry to EL3. This is a valid assumption as the code turns on the MMU after reset and leaves it on until the core powers off. Change-Id: I13c336d06a52297620a9760fb2461b4d606a30b3 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-29Optimize/cleanup BPIALL workaroundDimitris Papastamos
In the initial implementation of this workaround we used a dedicated workaround context to save/restore state. This patch reduces the footprint as no additional context is needed. Additionally, this patch reduces the memory loads and stores by 20%, reduces the instruction count and exploits static branch prediction to optimize the SMC path. Change-Id: Ia9f6bf06fbf8a9037cfe7f1f1fb32e8aec38ec7d Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-25Merge pull request #1228 from dp-arm/dp/cve_2017_5715davidcunado-arm
Workarounds for CVE-2017-5715 on A9/A15 and A17 + serial console reporting
2018-01-20Merge pull request #1229 from ↵davidcunado-arm
manojkumar-arm/manojkumar-arm/ca72-aarch32-reset-fix lib/cpus: fix branching in reset function for cortex-a72 AARCH32 mode
2018-01-19Merge pull request #1200 from robertovargas-arm/bl2-el3davidcunado-arm
Add BL2_AT_EL3 build option
2018-01-19lib/cpus: fix branching in reset function for cortex-a72 AARCH32 modeManoj Kumar
In AARCH32 mode, cortex_a72_reset_func branches to address in lr register instead of r5 register. This leads to linux boot failure of Cortex-A72 cores in AARCH32 mode on Juno-R2 board. This patch fixes the branching of cortex_a72_reset_func to r5 register as in cortex_a57_reset_func implementation. Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com>
2018-01-18Workaround for CVE-2017-5715 for Cortex A9, A15 and A17Dimitris Papastamos
A per-cpu vbar is installed that implements the workaround by invalidating the branch target buffer (BTB) directly in the case of A9 and A17 and indirectly by invalidating the icache in the case of A15. For Cortex A57 and A72 there is currently no workaround implemented when EL3 is in AArch32 mode so report it as missing. For other vulnerable CPUs (e.g. Cortex A73 and Cortex A75), there are no changes since there is currently no upstream AArch32 EL3 support for these CPUs. Change-Id: Ib42c6ef0b3c9ff2878a9e53839de497ff736258f Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-18Print erratum application report for CVE-2017-5715Dimitris Papastamos
Even though the workaround for CVE-2017-5715 is not a CPU erratum, the code is piggybacking on the errata framework to print whether the workaround was applied, missing or not needed. Change-Id: I821197a4b8560c73fd894cd7cd9ecf9503c72fa3 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-18Change the default errata format stringDimitris Papastamos
As we are using the errata framework to handle workarounds in a more general sense, change the default string to reflect that. Change-Id: I2e266af2392c9d95e18fe4e965f9a1d46fd0e95e Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-18bl2-el3: Add BL2_EL3 imageRoberto Vargas
This patch enables BL2 to execute at the highest exception level without any dependancy on TF BL1. This enables platforms which already have a non-TF Boot ROM to directly load and execute BL2 and subsequent BL stages without need for BL1. This is not currently possible because BL2 executes at S-EL1 and cannot jump straight to EL3. Change-Id: Ief1efca4598560b1b8c8e61fbe26d1f44e929d69 Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
2018-01-12Merge pull request #1197 from dp-arm/dp/amudavidcunado-arm
AMUv1 support
2018-01-11Add hooks to save/restore AMU context for Cortex A75Dimitris Papastamos
Change-Id: I504d3f65ca5829bc1f4ebadb764931f8379ee81f Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-11Use PFR0 to identify need for mitigation of CVE-2017-5915Dimitris Papastamos
If the CSV2 field reads as 1 then branch targets trained in one context cannot affect speculative execution in a different context. In that case skip the workaround on Cortex A75. Change-Id: I4d5504cba516a67311fb5f0657b08f72909cbd38 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-11Workaround for CVE-2017-5715 on Cortex A73 and A75Dimitris Papastamos
Invalidate the Branch Target Buffer (BTB) on entry to EL3 by temporarily dropping into AArch32 Secure-EL1 and executing the `BPIALL` instruction. This is achieved by using 3 vector tables. There is the runtime vector table which is used to handle exceptions and 2 additional tables which are required to implement this workaround. The additional tables are `vbar0` and `vbar1`. The sequence of events for handling a single exception is as follows: 1) Install vector table `vbar0` which saves the CPU context on entry to EL3 and sets up the Secure-EL1 context to execute in AArch32 mode with the MMU disabled and I$ enabled. This is the default vector table. 2) Before doing an ERET into Secure-EL1, switch vbar to point to another vector table `vbar1`. This is required to restore EL3 state when returning from the workaround, before proceeding with normal EL3 exception handling. 3) While in Secure-EL1, the `BPIALL` instruction is executed and an SMC call back to EL3 is performed. 4) On entry to EL3 from Secure-EL1, the saved context from step 1) is restored. The vbar is switched to point to `vbar0` in preparation to handle further exceptions. Finally a branch to the runtime vector table entry is taken to complete the handling of the original exception. This workaround is enabled by default on the affected CPUs. NOTE ==== There are 4 different stubs in Secure-EL1. Each stub corresponds to an exception type such as Sync/IRQ/FIQ/SError. Each stub will move a different value in `R0` before doing an SMC call back into EL3. Without this piece of information it would not be possible to know what the original exception type was as we cannot use `ESR_EL3` to distinguish between IRQs and FIQs. Change-Id: I90b32d14a3735290b48685d43c70c99daaa4b434 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2018-01-11Workaround for CVE-2017-5715 on Cortex A57 and A72Dimitris Papastamos
Invalidate the Branch Target Buffer (BTB) on entry to EL3 by disabling and enabling the MMU. To achieve this without performing any branch instruction, a per-cpu vbar is installed which executes the workaround and then branches off to the corresponding vector entry in the main vector table. A side effect of this change is that the main vbar is configured before any reset handling. This is to allow the per-cpu reset function to override the vbar setting. This workaround is enabled by default on the affected CPUs. Change-Id: I97788d38463a5840a410e3cea85ed297a1678265 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2017-12-04Merge pull request #1168 from matt2048/masterdavidcunado-arm
Replace macro ASM_ASSERTION with macro ENABLE_ASSERTIONS
2017-11-29Implement support for the Activity Monitor Unit on Cortex A75Dimitris Papastamos
The Cortex A75 has 5 AMU counters. The first three counters are fixed and the remaining two are programmable. A new build option is introduced, `ENABLE_AMU`. When set, the fixed counters will be enabled for use by lower ELs. The programmable counters are currently disabled. Change-Id: I4bd5208799bb9ed7d2596e8b0bfc87abbbe18740 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2017-11-23Replace macro ASM_ASSERTION with macro ENABLE_ASSERTIONSMatt Ma
This patch replaces the macro ASM_ASSERTION with the macro ENABLE_ASSERTIONS in ARM Cortex-A53/57/72 MPCore Processor related files. There is build error when ASM_ASSERTION is set to 1 and ENABLE_ASSERTIONS is set to 0 because function asm_assert in common/aarch32/debug.S is defined in the macro ENABLE_ASSERTIONS but is called with the macro ASM_ASSERTION. There is also the indication to use ENABLE_ASSERTIONS but not ASM_ASSERTION in the Makefile. Signed-off-by: Matt Ma <matt.ma@spreadtrum.com>
2017-11-08ARMv7: introduce Cortex-A12Etienne Carriere
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-11-08ARMv7: introduce Cortex-A17Etienne Carriere
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-11-08ARMv7: introduce Cortex-A7Etienne Carriere
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-11-08ARMv7: introduce Cortex-A5Etienne Carriere
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-11-08ARMv7: introduce Cortex-A9Etienne Carriere
As Cortex-A9 needs to manually enable program flow prediction, do not reset SCTLR[Z] at entry. Platform should enable it only once MMU is enabled. Change-Id: I34e1ee2da73221903f7767f23bc6fc10ad01e3de Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-11-08ARMv7: introduce Cortex-A15Etienne Carriere
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2017-09-07Cortex-A72: Implement workaround for erratum 859971Eleanor Bonnici
Erratum 855971 applies to revision r0p3 or earlier Cortex-A72 CPUs. The recommended workaround is to disable instruction prefetch. Change-Id: I7fde74ee2a8a23b2a8a1891b260f0eb909fad4bf Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com> Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
2017-09-07Cortex-A57: Implement workaround for erratum 859972Eleanor Bonnici
Erratum 855972 applies to revision r1p3 or earlier Cortex-A57 CPUs. The recommended workaround is to disable instruction prefetch. Change-Id: I56eeac0b753eb1432bd940083372ad6f7e93b16a Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com> Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
2017-08-29CPU: Correct names of implementation-defined aux regsEleanor Bonnici
At present, various CPU register macros that refer to CPUACTLR are named ACTLR. This patch fixes that. The previous register names are retained, but guarded by the ERROR_DEPRECATED macro, so as not to break platforms that continue using the old names. Change-Id: Ia872196d81803f8f390b887d149e0fd054df519b Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com>
2017-07-12Fix order of #includesIsla Mitchell
This fix modifies the order of system includes to meet the ARM TF coding standard. There are some exceptions in order to retain header groupings, minimise changes to imported headers, and where there are headers within the #if and #ifndef statements. Change-Id: I65085a142ba6a83792b26efb47df1329153f1624 Signed-off-by: Isla Mitchell <isla.mitchell@arm.com>
2017-06-28Introduce TF_LDFLAGSDouglas Raillard
Use TF_LDFLAGS from the Makefiles, and still append LDFLAGS as well to the compiler's invocation. This allows passing extra options from the make command line using LDFLAGS. Document new LDFLAGS Makefile option. Change-Id: I88c5ac26ca12ac2b2d60a6f150ae027639991f27 Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
2017-06-28Merge pull request #1002 from douglas-raillard-arm/dr/fix_errata_a53danh-arm
Apply workarounds for A53 Cat A Errata 835769 and 843419
2017-06-27Resolve signed-unsigned comparison issuesDavid Cunado
A recent commit 030567e6f51731982a7e71cbd387de93bc0e35fd added U()/ULL() macro to TF constants. This has caused some signed-unsigned comparison warnings / errors in the TF static analysis. This patch addresses these issues by migrating impacted variables from signed ints to unsigned ints and vice verse where applicable. Change-Id: I4b4c739a3fa64aaf13b69ad1702c66ec79247e53 Signed-off-by: David Cunado <david.cunado@arm.com>
2017-06-22Apply workarounds for A53 Cat A Errata 835769 and 843419Douglas Raillard
These errata are only applicable to AArch64 state. See the errata notice for more details: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.epm048406/index.html Introduce the build options ERRATA_A53_835769 and ERRATA_A53_843419. Enable both of them for Juno. Apply the 835769 workaround as following: * Compile with -mfix-cortex-a53-835769 * Link with --fix-cortex-a53-835769 Apply the 843419 workaround as following: * Link with --fix-cortex-a53-843419 The erratum 843419 workaround can lead the linker to create new sections suffixed with "*.stub*" and 4KB aligned. The erratum 835769 can lead the linker to create new "*.stub" sections with no particular alignment. Also add support for LDFLAGS_aarch32 and LDFLAGS_aarch64 in Makefile for architecture-specific linker options. Change-Id: Iab3337e338b7a0a16b0d102404d9db98c154f8f8 Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
2017-06-20aarch32: Implement errata workarounds for Cortex A57Dimitris Papastamos
This brings the implementation on par with the software errata workarounds for AArch64. Change-Id: I98a85fd92e32ae4259f4ec5b3e93cffc87090064 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2017-06-20aarch32: Implement errata workarounds for Cortex A53Dimitris Papastamos
This brings the implementation on par with the software errata workarounds for AArch64. Change-Id: Id103602e35b1c0ad3705a5b2b7cdb34dd8a8c5e2 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2017-06-20aarch32: Implement cpu_rev_var_hs()Dimitris Papastamos
Helper function to assist with errata workaround application. Change-Id: Idba42ca238442cc826f43444dbfa754e433a5e5e Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
2017-06-14Unique names for defines in the CPU librariesVarun Wadekar
This patch makes all the defines in the CPU libraries unique, by prefixing them with the CPU name. NOTE: PLATFORMS USING THESE MACROS WILL HAVE TO UPDATE THEIR CODE TO START USING THE UPDATED NAMES Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
2017-06-14Tegra: enable 'signed-comparison' compilation warning/errorsVarun Wadekar
This patch enables the 'sign-compare' flag, to enable warning/errors for comparisons between signed/unsigned variables. The warning has been enabled for all the Tegra platforms, to start with. Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
2017-06-01Add support for Cortex-A75 and Cortex-A55 CPUsDavid Wang
Both Cortex-A75 and Cortex-A55 CPUs use the ARM DynamIQ Shared Unit (DSU). The power-down and power-up sequences are therefore mostly managed in hardware, and required software operations are considerably simpler. Change-Id: I68b30e6e1ebe7c041d5e67f39c59f08575fc7ecc Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com> Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
2017-05-24Use a callee-saved register to be AAPCS-compliantdp-arm
x8 is not a callee-saved register and can be corrupted. Use x19 instead to be AAPCS-compliant. Fixes ARM-software/tf-issues#478 Change-Id: Ib4f114c36f4c11351ae856f953c45dca92b27c3b Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-10 21:25:09 +0000