aboutsummaryrefslogtreecommitdiff
path: root/target-arm
AgeCommit message (Collapse)Author
2014-10-24target-arm: A32: Emulate the SMC instructionFabian Aggeler
Implements SMC instruction in AArch32 using the A32 syndrome. When executing SMC instruction from monitor CPU mode SCR.NS bit is reset. Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com> Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch> Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Message-id: 1413910544-20150-7-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: make arm_current_el() return EL3Fabian Aggeler
Make arm_current_el() return EL3 for secure PL1 and monitor mode. Increase MMU modes since mmu_index is directly inferred from arm_ current_el(). Change assertion in arm_el_is_aa64() to allow EL3. Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch> Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1413910544-20150-6-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: rename arm_current_pl to arm_current_elGreg Bellows
Renamed the arm_current_pl CPU function to more accurately represent that it returns the ARMv8 EL rather than ARMv7 PL. Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1413910544-20150-5-git-send-email-greg.bellows@linaro.org [PMM: fixed a minor merge resolution error in a couple of hunks] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: reject switching to monitor modeSergey Fedorov
Reject switching to monitor mode from non-secure state. Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com> Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch> Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1413910544-20150-4-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: add arm_is_secure() functionFabian Aggeler
arm_is_secure() function allows to determine CPU security state if the CPU implements Security Extensions/EL3. arm_is_secure_below_el3() returns true if CPU is in secure state below EL3. Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com> Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch> Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1413910544-20150-3-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: increase arrays of registers R13 & R14Fabian Aggeler
Increasing banked_r13 and banked_r14 to store LR_mon and SP_mon (bank index 7). Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch> Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1413910544-20150-2-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: correctly UNDEF writes to FPINST/FPINST2 from EL0Peter Maydell
The ARM ARM requires that the FPINST and FPINST2 VFP control registers are not accessible to code at EL0. We were already correctly implementing this for reads of these registers; add the missing check for the write code path. Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com> Message-id: 1412967447-20931-1-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: Report a valid L1Ip field in CTR_EL0 for CPU type "any"Peter Maydell
For the CPU type "any" (only used with linux-user) we were reporting the L1Ip field as 0b00, which is reserved. Change this field to 0b10 instead, indicating a VIPT icache as the comment describes. Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com> Message-id: 1412966807-20844-1-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: Correct sense of the DCZID DZP bitPeter Maydell
The DZP bit in the DCZID system register should be set if the control bits which prohibit use of the DC ZVA instruction have been set (it stands for Data Zero Prohibited). However we had the sense of the test inverted; fix this so that the bit reads correctly. To avoid this regressing the behaviour of the user-mode emulator, we must set the DZE bit in the SCTLR for that config so that userspace continues to see DZP as zero (it was getting the correct result by accident previously). Reported-by: Christopher Covington <cov@codeaurora.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Christopher Covington <cov@codeaurora.org> Message-id: 1412959792-20708-1-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: add emulation of PSCI calls for system emulationRob Herring
Add support for handling PSCI calls in system emulation. Both version 0.1 and 0.2 of the PSCI spec are supported. Platforms can enable support by setting the "psci-conduit" QOM property on the cpus to SMC or HVC emulation and having a PSCI binding in their dtb. Signed-off-by: Rob Herring <rob.herring@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-7-git-send-email-peter.maydell@linaro.org [PMM: made system reset/off PSCI functions power down the CPU so we obey the PSCI API requirement never to return from them; rearranged how the code is plumbed into the exception system, so that we split "is this a valid call?" from "do the call"] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-24target-arm: Add support for A32 and T32 HVC and SMC insnsPeter Maydell
Add support for HVC and SMC instructions to the A32 and T32 decoder. Using these for real exceptions to EL2 or EL3 is currently not supported (the do_interrupt routine does not handle them) but we require the instruction support to implement PSCI. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-6-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: Handle SMC/HVC undef-if-no-ELx in pre_* helpersPeter Maydell
SMC must UNDEF if EL3 is not implemented; similarly HVC UNDEFs if EL2 is not implemented. Move the handling of this from translate-a64.c into the pre_smc and pre_hvc helper functions. This is necessary because use of these instructions for PSCI takes precedence over this UNDEF case, and we can't tell if this is a PSCI call until runtime. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-5-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: add missing PSCI constants needed for PSCI emulationArd Biesheuvel
This adds some PSCI function IDs and symbolic return codes that are needed to implement PSCI emulation in TCG mode. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-4-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: do not set do_interrupt handlers for ARM and AArch64 user modesRob Herring
User mode emulation should never get interrupts and thus should not use the system emulation exception handler function. Remove the reference, and '#ifndef USER_MODE_ONLY' the function itself as well, so that we can add system mode only functionality to it. Signed-off-by: Rob Herring <rob.herring@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-3-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: add powered off cpu stateRob Herring
Add tracking of cpu power state in order to support powering off of cores in system emuluation. The initial state is determined by the start-powered-off QOM property. Signed-off-by: Rob Herring <rob.herring@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1412865028-17725-2-git-send-email-peter.maydell@linaro.org
2014-10-06gdbstub: Allow target CPUs to specify watchpoint STOP_BEFORE_ACCESS flagPeter Maydell
GDB assumes that watchpoint set via the gdbstub remote protocol will behave in the same way as hardware watchpoints for the target. In particular, whether the CPU stops with the PC before or after the insn which triggers the watchpoint is target dependent. Allow guest CPU code to specify which behaviour to use. This fixes a bug where with guest CPUs which stop before the accessing insn GDB would manually step forward over what it thought was the insn and end up one insn further forward than it should be. We set this flag for the CPU architectures which set gdbarch_have_nonsteppable_watchpoint in gdb 7.7: ARM, CRIS, LM32, MIPS and Xtensa. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Tested-by: Max Filippov <jcmvbkbc@gmail.com> Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Tested-by: Michael Walle <michael@walle.cc> (for lm32) Message-id: 1410545057-14014-1-git-send-email-peter.maydell@linaro.org
2014-09-29target-arm: Add support for VIRQ and VFIQEdgar E. Iglesias
This only implements the external delivery method via the GIC. Acked-by: Greg Bellows <greg.bellows@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-12-git-send-email-edgar.iglesias@gmail.com [PMM: adjusted following cpu-exec refactoring] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Add IRQ and FIQ routing to EL2 and 3Edgar E. Iglesias
Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-11-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: A64: Emulate the SMC insnEdgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-10-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Add a Hypervisor Trap exception typeEdgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-9-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: A64: Emulate the HVC insnEdgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-8-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: A64: Correct updates to FAR and ESR on exceptionsEdgar E. Iglesias
Not all exception types update both FAR and ESR. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-7-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Don't take interrupts targeting lower ELsEdgar E. Iglesias
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-6-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Break out exception masking to a separate funcEdgar E. Iglesias
Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-5-git-send-email-edgar.iglesias@gmail.com [PMM: updated to account for recent cpu-exec refactoring] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: A64: Refactor aarch64_cpu_do_interruptEdgar E. Iglesias
Introduce new_el and new_mode in preparation for future patches that add support for taking exceptions to and from EL2 and 3. No functional change. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-4-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Add SCR_EL3Edgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-3-git-send-email-edgar.iglesias@gmail.com [PMM: apply offsetoflow32() to correct regdef] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Add HCR_EL2Edgar E. Iglesias
Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1411718914-6608-2-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-29target-arm: Don't handle c15_cpar changes via tb_flush()Peter Maydell
At the moment we try to handle c15_cpar with the strategy of: * emit generated code which makes assumptions about its value * when the register value changes call tb_flush() to throw away the now-invalid generated code This works because XScale CPUs are always uniprocessor, but it's confusing because it suggests that the same approach can be taken for other registers. It also means we do a tb_flush() on CPU reset, which makes multithreaded linux-user binaries even more likely to fail than would otherwise be the case. Replace it with a combination of TB flags for the access checks done on cp0/cp1 for the XScale and iwMMXt instructions, plus a runtime check for cp2..cp13 coprocessor accesses. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1411056959-23070-1-git-send-email-peter.maydell@linaro.org
2014-09-29target-arm: Implement handling of breakpoint firingPeter Maydell
Implement handling of breakpoint event firing to correctly inject the debug exception into the guest. Since the breakpoint and watchpoint control register format is very similar we adjust wp_matches() to also handle breakpoints as well rather than using a separate function. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410523465-13400-3-git-send-email-peter.maydell@linaro.org
2014-09-29target-arm: Implement setting guest breakpointsPeter Maydell
This patch adds support for setting guest breakpoints based on values the guest writes to the DBGBVR and DBGBCR registers. (It doesn't include the code to handle when these breakpoints fire, so has no guest-visible effect.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410523465-13400-2-git-send-email-peter.maydell@linaro.org
2014-09-25target-arm: Use cpu_exec_interrupt qom hookRichard Henderson
Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net> Message-id: 1410626734-3804-15-git-send-email-rth@twiddle.net Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Make *IS TLB maintenance ops affect all CPUsPeter Maydell
The ARM architecture defines that the "IS" variants of TLB maintenance operations must affect all TLBs in the Inner Shareable domain, which for us means all CPUs. We were incorrectly implementing these to only affect the current CPU, which meant that SMP TCG operation was unstable. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410274883-9578-3-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org
2014-09-12target-arm: Push legacy wildcard TLB ops back into v6Peter Maydell
When we implemented ARMv8 in QEMU we retained our legacy loose wildcarded decoding of the TLB maintenance operations for v7 and earlier CPUs and provided the correct stricter decode for v8. However the loose decode is in fact wrong for v7MP, because it doesn't correctly implement the operations which must apply to every CPU in the Inner Shareable domain. Move the legacy wildcarding from the not_v8 reginfo array into the not_v7 array, and move the strictly decoded operations from the v8 reginfo to v7 or v7mp arrays as appropriate. Cache and TLB lockdown legacy wildcarding remains in the not_v8 array for the moment. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410274883-9578-2-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org
2014-09-12target-arm: Implement minimal DBGVCR, OSDLR_EL1, MDCCSR_EL0Peter Maydell
Implement debug registers DBGVCR, OSDLR_EL1 and MDCCSR_EL0 (as dummy or limited-functionality). 32 bit Linux kernels will access these at startup so they are required for breakpoints and watchpoints to be supported. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Remove comment about MDSCR_EL1 being dummy implementationPeter Maydell
MDSCR_EL1 has actual functionality now; remove the out of date comment that claims it is a dummy implementation. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Set DBGDSCR.MOE for debug exceptions taken to AArch32Peter Maydell
For debug exceptions taken to AArch32 we have to set the DBGDSCR.MOE (Method Of Entry) bits; we can identify the kind of debug exception from the information in exception.syndrome. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Implement handling of fired watchpointsPeter Maydell
Implement the ARM debug exception handler for dealing with fired watchpoints. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Move extended_addresses_enabled() to internals.hPeter Maydell
Move the utility function extended_addresses_enabled() into internals.h; we're going to need to call it from op_helper.c. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Implement setting of watchpointsPeter Maydell
Implement support for setting QEMU watchpoints based on the values the guest writes to the ARM architected watchpoint registers. (We do not yet report the firing of the watchpoints to the guest, so they will just be ignored.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Fix broken indentation in arm_cpu_reest()Martin Galvan
Fix a single misindented line in arm_cpu_reset(). Signed-off-by: Martin Galvan <martin.galvan@tallertechnologies.com> [PMM: split this out from the previous commit] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Fix resetting issues on ARMv7-M CPUsMartin Galvan
When calling qemu_system_reset after startup on a Cortex-M CPU, the initial values of PC, MSP and the Thumb bit weren't being set correctly if the vector table was in ROM. In particular, since Thumb was 0, a Usage Fault would arise immediately after trying to execute any instruction on a Cortex-M. Signed-off-by: Martin Galvan <martin.galvan@tallertechnologies.com> Message-id: CAOKbPbaLt-LJsAKkQdOE0cs9Xx4OWrUfpDhATXPSdtuNw2xu_A@mail.gmail.com [PMM: removed an incorrect comment] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Implement pmccfiltr_write functionAlistair Francis
This is the function that is called when writing to the PMCCFILTR_EL0 register Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 73da3da6404855b17d5ae82975a32ff3a4dcae3d.1409025949.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Remove old code and replace with new functionsAlistair Francis
Remove the old PMCCNTR code and replace it with calls to the new pmccntr_sync() and arm_ccnt_enabled() functions. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 693a6e437d915c2195fd3dc7303f384ca538b7bf.1409025949.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Implement pmccntr_sync functionAlistair Francis
This is used to synchronise the PMCCNTR counter and swap its state between enabled and disabled if required. It must always be called twice, both before and after any logic that could change the state of the PMCCNTR counter. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 62811d4c0f7b1384f7aab62ea2fcfda3dcb0db50.1409025949.git.peter.crosthwaite@xilinx.com [PMM: fixed minor typos in pmccntr_sync doc comment] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Add arm_ccnt_enabled functionAlistair Francis
Include a helper function to determine if the CCNT counter is enabled. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: e1a64f17a756e06c8bda8238ad4826d705049f7a.1409025949.git.peter.crosthwaite@xilinx.com [ PC changes * Remove EL based checks ] Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Implement PMCCNTR_EL0 and related registersAlistair Francis
This patch adds support for the ARMv8 version of the PMCCNTR and related registers. It also starts to implement the PMCCFILTR_EL0 register. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: b5d1094764a5416363ee95216799b394ecd011e8.1409025949.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29arm: Implement PMCCNTR 32b read-modify-writePeter Crosthwaite
The register is now 64bit, however a 32 bit write to the register should leave the higher bits unchanged. The open coded write handler does not implement this, so we need to read-modify-write accordingly. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Alistair Francis <alistair23@gmail.com> Message-id: ec350573424bb2adc1701c3b9278d26598e2f2d1.1409025949.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Make the ARM PMCCNTR register 64-bitAlistair Francis
This makes the PMCCNTR register 64-bit to allow for the 64-bit ARMv8 version. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 6c5bac5fd0ea54963b1fc0e7f9464909f2e19a73.1409025949.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Correct Cortex-A57 ISAR5 and AA64ISAR0 ID register valuesPeter Maydell
We implement the crypto extensions but were incorrectly reporting ID register values for the Cortex-A57 which did not advertise crypto. Use the correct values as described in the TRM. With this fix Linux correctly detects presence of the crypto features and advertises them in /proc/cpuinfo. Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1408718660-7295-1-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-29target-arm: Fix regression that disabled VFP for ARMv5 CPUsPeter Maydell
Commit 2c7ffc414 added support for honouring the CPACR coprocessor access control register bits which may disable access to VFP and Neon instructions. However it failed to account for the fact that the CPACR is only present starting from the ARMv6 architecture version, so it accidentally disabled VFP completely for ARMv5 CPUs like the ARM926. Linux would detect this as "no VFP present" and probably fall back to its own emulation, but other guest OSes might crash or misbehave. This fixes bug LP:1359930. Reported-by: Jakub Jermar <jakub@jermar.eu> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1408714940-7192-1-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-22 07:43:21 +0000