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2014-12-22target-arm: add cpu feature EL3 to CPUs with Security ExtensionsFabian Aggeler1-0/+4
Set ARM_FEATURE_EL3 feature for CPUs that implement Security Extensions. 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: 1418684992-8996-16-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-22target-arm: Add ARMCPU secure propertyGreg Bellows1-0/+23
Added a "has_el3" state property to the ARMCPU descriptor. This property indicates whether the ARMCPU has security extensions enabled (EL3) or not. By default it is disabled at this time. Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1418684992-8996-10-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-22target-arm: Add feature unset functionGreg Bellows1-0/+5
Add an unset_feature() function to compliment the set_feature() function. This will be used to disable functions after they have been enabled during initialization. Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1418684992-8996-9-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-11target-arm: make IFAR/DFAR bankedFabian Aggeler1-1/+1
When EL3 is running in AArch32 (or ARMv7 with Security Extensions) IFAR and DFAR have a secure and a non-secure instance. 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: 1416242878-876-22-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-11target-arm: add SCTLR_EL3 and make SCTLR bankedFabian Aggeler1-2/+6
Implements SCTLR_EL3 and uses secure/non-secure instance when needed. 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: 1416242878-876-14-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-11-04target-arm: Separate out M profile cpu_exec_interrupt handlingPeter Maydell1-10/+39
The M profile cpu_exec_interrupt handling is fairly simple but does include an M profile specific oddity (disabling interrupts for certain PC values). A/R profile handling on the other hand is getting rapidly more complicated with the support for EL2 and EL3. Split the M profile code out into its own implementation of cpu_exec_interrupt to keep these two things out of each others' way. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1414684132-23971-2-git-send-email-peter.maydell@linaro.org
2014-10-24target-arm: Correct sense of the DCZID DZP bitPeter Maydell1-2/+2
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 Herring1-3/+7
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: do not set do_interrupt handlers for ARM and AArch64 user modesRob Herring1-1/+1
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 Herring1-1/+7
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 Maydell1-0/+1
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. Iglesias1-11/+36
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: Break out exception masking to a separate funcEdgar E. Iglesias1-5/+2
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: Don't handle c15_cpar changes via tb_flush()Peter Maydell1-5/+0
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 setting guest breakpointsPeter Maydell1-0/+1
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 Henderson1-0/+34
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: Implement handling of fired watchpointsPeter Maydell1-0/+1
Implement the ARM debug exception handler for dealing with fired watchpoints. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Implement setting of watchpointsPeter Maydell1-0/+2
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 Galvan1-1/+1
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 Galvan1-10/+22
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>
2014-08-19arm: cortex-a9: Fix cache-line size and associativityPeter Crosthwaite1-2/+2
For A9, The cache associativity is 4 and the lines size is 32B. Self identify in CCSIDR accordingly. Cache size remains at 16k. QEMU doesn't emulate caches, but we should still report the correct cache-line size to the guest. Some guests (like u-boot) complain if the cache-line size mismatches a requested flush or invalidate operation. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1de6bd40155a1d2f2e93e24b1b1d1d677a432641.1408346233.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-19target-arm: Adjust debug ID registers per-CPUPeter Maydell1-0/+3
Allow each CPU type to specify the value for the debug ID registers, by putting them in the ARMCPU struct, and use the resulting information to only expose the correct number of watchpoint and breakpoint registers for the CPU. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-08-04target-arm: Make far_el1 an arrayEdgar E. Iglesias1-1/+1
No functional change. Prepares for future additions of the EL2 and 3 versions of this reg. Reviewed-by: Greg Bellows <greg.bellows@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1402994746-8328-5-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19target-arm: Introduce per-CPU field for PSCI versionPranavkumar Sawargaonkar1-0/+1
We require to know the PSCI version available to given CPU at potentially many places. Currently, we need to know PSCI version when generating DTB for virt machine. This patch introduce per-CPU 32bit field representing the PSCI version available to the CPU. The encoding of this 32bit field is same as described in PSCI v0.2 spec. Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org> Signed-off-by: Anup Patel <anup.patel@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1402901605-24551-8-git-send-email-pranavkumar@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-09target-arm: VFPv4 implies half-precision extensionPeter Maydell1-2/+1
VFPv4 implies the presence of the half-precision floating point extension (which is optional in VFPv3). Add this implied rule to arm_cpu_realizefn() and remove some no-longer-needed explicit setting of the bit in initfns. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-5-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: Clean up handling of ARMv8 optional feature bitsPeter Maydell1-4/+4
CRC and crypto are both optional v8 extensions, so FEATURE_V8 should not imply them. Instead we should set these bits in the initfns for the 32-bit and 64-bit "cpu any" and for the Cortex-A57. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-4-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: Remove unnecessary setting of feature bitsPeter Maydell1-2/+0
FEATURE_V8 implies both FEATURE_V7MP and FEATURE_ARM_DIV, so we don't need to set them explicitly in initfns which set the V8 feature bit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-3-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: arm_any_initfn() should never set ARM_FEATURE_AARCH64Peter Maydell1-3/+0
The arm_any_initfn() is used only for the 32-bit linux-user "cpu any", so it only gets called in builds where TARGET_AARCH64 is not defined. Remove the unreachable line which sets ARM_FEATURE_AARCH64. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-2-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: add support for v8 VMULL.P64 instructionPeter Maydell1-0/+1
Add support for the VMULL.P64 polynomial 64x64 to 128 bit multiplication instruction in the A32/T32 instruction sets; this is part of the v8 Crypto Extensions. To do this we have to move the neon_pmull_64_{lo,hi} helpers from helper-a64.c into neon_helper.c so they can be used by the AArch32 translator. Inspired-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401386724-26529-4-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: add support for v8 SHA1 and SHA256 instructionsArd Biesheuvel1-0/+2
This adds support for the SHA1 and SHA256 instructions that are available on some v8 implementations of Aarch32. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401386724-26529-2-git-send-email-peter.maydell@linaro.org [PMM: * rebase * fix bad indent * add a missing UNDEF check for Q!=1 in the 3-reg SHA1/SHA256 case * use g_assert_not_reached() * don't re-extract bit 6 for the 2-reg-misc encodings * set the ELF HWCAP2 bits for the new features ] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27target-arm: Fix segfault on startup when KVM enabledChristoffer Dall1-1/+1
Commit 50a2c6e55fa introduced a bug where QEMU would segfault on startup when using KVM on ARM hosts, because kvm_arm_reset_cpu() accesses cpu->cpreg_reset_values, which is not allocated before kvm_arch_init_vcpu(). Fix this by not calling cpu_reset() until after qemu_init_vcpu(). Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Faerber <afaerber@suse.de> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Message-id: 1401194263-13010-1-git-send-email-christoffer.dall@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-13kvm: reset state from the CPU's reset methodPaolo Bonzini1-0/+7
Now that we have a CPU object with a reset method, it is better to keep the KVM reset close to the CPU reset. Using qemu_register_reset as we do now keeps them far apart. With this patch, PPC no longer calls the kvm_arch_ function, so it can get removed there. Other arches call it from their CPU reset handler, and the function gets an ARMCPU/X86CPU/S390CPU. Note that ARM- and s390-specific functions are called kvm_arm_* and kvm_s390_*, while x86-specific functions are called kvm_arch_*. That follows the convention used by the different architectures. Changing that is the topic of a separate patch. Reviewed-by: Gleb Natapov <gnatapov@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-17target-arm: Make Cortex-A15 CBAR read-onlyPeter Maydell1-1/+1
The Cortex-A15's CBAR register is actually read-only (unlike that of the Cortex-A9). Correct our model to match the hardware. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17target-arm: Implement CBAR for Cortex-A57Peter Maydell1-2/+6
The Cortex-A57, like most of the other ARM cores, has a CBAR register which defines the base address of the per-CPU peripherals. However it has a 64-bit view as well as a 32-bit view; expand the QOM reset-cbar property from UINT32 to UINT64 so this can be specified, and implement the 32-bit and 64-bit views of a 64-bit CBAR. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17target-arm: Implement RVBAR registerPeter Maydell1-0/+9
Implement the AArch64 RVBAR register, which indicates the reset address. Since the reset address is implementation defined and usually configurable by setting config signals in hardware, we also provide a QOM property so it can be set at board level if necessary. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17target-arm: Implement ARMv8 MVFR registersPeter Maydell1-0/+1
For ARMv8 there are two changes to the MVFR media feature registers: * there is a new MVFR2 which is accessible from 32 bit code * 64 bit code accesses these via the usual sysreg instructions rather than with a floating-point specific instruction Implement this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17target-arm: Implement AArch64 views of fault status and data registersRob Herring1-1/+1
Implement AArch64 views of ESR_EL1 and FAR_EL1, and make the 32 bit DFSR, DFAR, IFAR share state with them as architecturally specified. The IFSR doesn't share state with any AArch64 register visible at EL1, so just rename the state field without widening it to 64 bits. Signed-off-by: Rob Herring <rob.herring@linaro.org> [PMM: Minor tweaks; fix some bugs involving inconsistencies between use of offsetof() or offsetoflow32() and struct field width] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17target-arm: A64: Correctly fault FP/Neon if CPACR.FPEN setPeter Maydell1-0/+7
For the A64 instruction set, the only FP/Neon disable trap is the CPACR FPEN bits, which may indicate "enabled", "disabled" or "disabled for EL0". Add a bit to the AArch64 tb flags indicating whether FP/Neon access is currently enabled and make the decoder emit code to raise exceptions on use of FP/Neon insns if it is not. We use a new flag in DisasContext rather than borrowing the existing vfp_enabled flag because the A32/T32 decoder is going to need both. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> --- I'm aware this is a rather hard to review patch; sorry. I have done an exhaustive check that we have fp access checks in all code paths with the aid of the assertions added in the next patch plus the code-coverage hack patch I posted to the list earlier. This patch is correct as of 09e037354 target-arm: A64: Add saturating accumulate ops (USQADD/SUQADD) which was the last of the Neon insns to be added, so assuming no refactoring of the code it should be fine.
2014-04-17target-arm: Split out private-to-target functions into internals.hPeter Maydell1-0/+1
Currently cpu.h defines a mixture of functions and types needed by the rest of QEMU and those needed only by files within target-arm/. Split the latter out into a new header so they aren't needlessly exposed further than required. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-03-13cputlb: Change tlb_flush() argument to CPUStateAndreas Färber1-1/+1
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move breakpoints field from CPU_COMMON to CPUStateAndreas Färber1-1/+1
Most targets were using offsetof(CPUFooState, breakpoints) to determine how much of CPUFooState to clear on reset. Use the next field after CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_handle_mmu_fault() into a CPUClass hookAndreas Färber1-1/+3
Note that while such functions may exist both for *-user and softmmu, only *-user uses the CPUState hook, while softmmu reuses the prototype for calling it directly. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_has_work() into a CPUClass hookAndreas Färber1-0/+7
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-02-26target-arm: Add support for AArch32 ARMv8 CRC32 instructionsWill Newton1-0/+1
Add support for AArch32 CRC32 and CRC32C instructions added in ARMv8 and add a CPU feature flag to enable these instructions. The CRC32-C implementation used is the built-in qemu implementation and The CRC-32 implementation is from zlib. This requires adding zlib to LIBS to ensure it is linked for the linux-user binary. Signed-off-by: Will Newton <will.newton@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1393411566-24104-3-git-send-email-will.newton@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-02-26target-arm: Store AIF bits in env->pstate for AArch32Peter Maydell1-4/+4
To avoid complication in code that otherwise would not need to care about whether EL1 is AArch32 or AArch64, we should store the interrupt mask bits (CPSR.AIF in AArch32 and PSTATE.DAIF in AArch64) in one place consistently regardless of EL1's mode. Since AArch64 has an extra enable bit (D for debug exceptions) which isn't visible in AArch32, this means we need to keep the enables in env->pstate. (This is also consistent with the general approach we're taking that we handle 32 bit CPUs as being like AArch64/ARMv8 CPUs but which only run in 32 bit mode.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-02-26target-arm: Implement AArch64 cache invalidate/clean opsPeter Maydell1-2/+2
Implement all the AArch64 cache invalidate and clean ops (which are all NOPs since QEMU doesn't emulate the cache). The only remaining unimplemented cache op is DC ZVA. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-02-26target-arm: A64: Make cache ID registers visible to AArch64Peter Maydell1-0/+2
Make the cache ID system registers (CLIDR, CSSELR, CCSIDR, CTR) visible to AArch64. These are mostly simple 64-bit extensions of the existing 32 bit system registers and so can share reginfo definitions. CTR needs to have a split definition, but we can clean up the temporary user-mode implementation in favour of using the CPU-specified reset value, and implement the system-mode-required semantics of restricting its EL0 accessibility if SCTLR.UCT is not set. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-02-26target-arm: Fix raw read and write functions on AArch64 registersPeter Maydell1-1/+1
The raw read and write functions were using the ARM_CP_64BIT flag in ri->type to determine whether to treat the register's state field as uint32_t or uint64_t; however AArch64 register info structs don't use that flag. Abstract out the "how big is the field?" test into a function and fix it to work for AArch64 registers. For this to work we must ensure that the reginfo structs put into the hashtable have the correct state field for their use, not the placeholder STATE_BOTH. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-02-20target-arm: Drop success/fail return from cpreg read and write functionsPeter Maydell1-4/+2
All cpreg read and write functions now return 0, so we can clean up their prototypes: * write functions return void * read functions return the value rather than taking a pointer to write the value to This is a fairly mechanical change which makes only the bare minimum set of changes to the callers of read and write functions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-02-20target-arm: Define names for SCTLR bitsPeter Maydell1-1/+1
The SCTLR is full of bits for enabling or disabling various things, and so there are many places in the code which check if certain bits are set. Define some named constants for the SCTLR bits so these checks are easier to read. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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