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2018-10-12arm: Use little endian packet accessors.Gabe Black
We know data is little endian, so we can use those accessors explicitly. Change-Id: Iee337109fcda134e1ac5a700e5141fd7060f9c45 Reviewed-on: https://gem5-review.googlesource.com/c/13457 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-08dev, arm: remove the RealViewEB platformCiro Santilli
This is an old platform, and we haven't had official Linux kernel configs for it in a while, so we've decided to deprecate it. Furthermore, trying to use it fails with: object 'RealViewEB' has no attribute 'pci_host' and the last commit in the class happened two years ago, which indicates that no one has been using it. Change-Id: Icc674b00b152eb3246e05141dbaf2624cc720f21 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/12471 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01dev-arm: Enable FIQ signaling for Group0 interrupts in GICv2Giacomo Travaglini
Change-Id: Iafaf26344a26eade60c08dd2c0d716af14d9b328 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12948 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01dev-arm: Create postFiq events for GICv2Giacomo Travaglini
GICv2 is signaling IRQs only to the CPU. This patch is adding the capability of scheduling FIQs. Change-Id: I395afc83eb8d58cfd32cd93372bcb6f804364ef5 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12947 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01dev-arm: Implement GICv2 GICD_IGROUPR registerGiacomo Travaglini
This patch is implementing GICD_IGROUPR register. Change-Id: I1626f61fbf7deec9c81d8d2c135f1d6c0c4eb891 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12946 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01dev-arm: Fix GICv2 cpu interrupt enable flagGiacomo Travaglini
Read/WriteCpu methods in the GICv2 are accessing the GICC_CTRL register as if writing any non-zero value to the register will enable IRQ signaling to the CPU. Instead, only the 2 least significant bits control group0/group1 enablement. This patch is renaming GICC_CTRL underlying data buffer from cpuEnabled to cpuControl and it is making it an array of uint32_t instead of bool. cpuEnabled now becomes a method and checks if GICC_CTRL.EnableGrp0 or GICC_CTRL.EnableGrp0 are set. Change-Id: I40f0b3c52c40abd482a856f032bf3686f96ef641 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12945 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01dev-arm: Add basic support for level sensitive SPIs in GICv2Adrien Pesle
For level sensitive interrupt IRQ line must be cleared when interrupt is deasserted. This is not the case for edge-trigerred interrupt. Change-Id: Ib1660da74a296750c0eb9e20878d4ee64bd23130 Reviewed-on: https://gem5-review.googlesource.com/12944 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-28dev-arm: Make CpuLocalTimer use standard ArmInterruptPinGiacomo Travaglini
Change-Id: I8c4eb9389b47df8cdf1eec966bb2c9da85a7a7c8 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12744 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-28dev-arm: Take into account PPI enable bitGiacomo Travaglini
When checking for PPIs to send to the cpu in the PL390 GIC we were forwarding any pending PPI regardless of their masking in the distributor. Change-Id: I2e294abeca733cca95cd0deeb9659c7d3d9d8734 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12624 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-18dev, arm: fix error class-memaccess with GCC >= 8.1Maurice Becker
From GCC 8.1 on GCC issues a warning when using memset et al on structs and classes. With the way gem5 builds, this actually prevents successful builds. Instead of using a pointer with SCSIReply as type, we cast to a void pointer to avoid the message. On the way we wrap the memset call into a method of SCSIReply called reset for better code readability. Signed-off-by: Maurice Becker <madnaurice@googlemail.com> Change-Id: I3ed3fd9714be5d253aba01ca00b1863e1ae5cb68 Reviewed-on: https://gem5-review.googlesource.com/12685 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-09-18Pl011: Added registers UART_RSR/UART_ECRMaurice Becker
UART_RSR shows errors with the transmission and UART_ECR can clear those (according to PL011 Technical Reference Manual Revision r1p4). As these transmission errors never occur, they are implemented as RAZ/WI. Both registers exist at the same offset 0x004. RSR is read-only, ECR is write-only. Signed-off-by: Maurice Becker <madnaurice@googlemail.com> Change-Id: Ia9d13c90c65feccf3ecec36a782170755b1e1c02 Reviewed-on: https://gem5-review.googlesource.com/12686 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-12dev-arm: fix build to missing Pl390 to Gicv2 renameCiro Santilli
Change-Id: I6756f2c789aaca410d201aa64147443b66afee39 Reviewed-on: https://gem5-review.googlesource.com/12645 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-12config, dev-arm: Fix UART handling baremetal modeCiro Santilli
fs.py in baremetal mode currently fails for the VExpress_GEM5_V1 platform due to inconsistent UART naming with error message: AttributeError: object 'VExpress_GEM5_V1' has no attribute 'uart' Consistently name keep all UARTs in the Arm platforms in a vector named 'uart' or as a single device named 'uart'. Update the configuration scripts to reflect the fact that 'uart' can be a vector. Change-Id: I20b8dbac794d6a9be19b6ce8c335a097872132fb Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12473 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-12dev-arm: rename Pl390 to GicV2Ciro Santilli
The Pl390 model has evolved and acquired a lot of the features from GICv2, which means that the name is no longer appropriate. Rename it to GICv2 since this is more representative of the supported features. GICv2 is backwards compatible with the older Pl390, so we decided to simply rename the class to represent both GICv2 and older interfaces such as the instead of creating a new separate one. Change-Id: I1c05fba8b3cb5841c66480e9f05b8c873eba3229 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12492 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-12dev-arm: improve Pl390 parametersCiro Santilli
Remove default dist_addr and cpu_addr register addresses since those are purely platform specific. Parametrize the cpu_size parameter. RealViewPBX has the Gic CPU and distributor base too close for the newer CPU size of 0x2000, leading to overlap. This was introduced in I90a9f669a46a37d79c6cc542087cf91f2044f104 and makes using RealViewPBX fail with: fatal: system.membus has two ports responding within range [0x1f000100 : 0x1f0020ff]: system.realview.gic.pio system.realview.gic.pio Change-Id: Ic6c0e6b3d4705ff369eb739d54a1173a47819b7d Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12491 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-10dev-arm: Make GenericTimer use standard ArmInterruptPinGiacomo Travaglini
This patch is deleting the custom ArchTimer::Interrupt implementation in favour of the standard ArmInterruptPin. Change-Id: I5aa5661e48834398bd7aae15df9578b8db5c8da3 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12402 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-10dev-arm: Factory SimObject for generating ArmInterruptPinGiacomo Travaglini
With this patch the python ArmInterruptPin SimObject matches to the C++ ArmInterruptPinGen. The latter is in charge of generating the ArmInterruptPin (which is not a SimObject anymore). This is meant to ease the generation of ArmInterruptPins: by not being SimObjects we are not forced to instantiate them in the configuration script; we can generate them dynamically instead throughout simulation. Change-Id: I917d73a26168447221f5993c8ae975ee3771e3bf Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12401 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-09-10dev, arm: Add misc reg tracing to the generic timerAndreas Sandberg
Change-Id: Ice9376b8eb42423679b0191910e8c980f8017f88 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12398
2018-09-10dev-arm: Create a getter for ArmInterruptPin ID numberGiacomo Travaglini
A pin owner might want to know which is the irq number associated with the pin. Change-Id: I095393d4d25efe13eb2a75a0b0b055d386c2c126 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Ciro Santilli <ciro.santilli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/12298 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-08-21dev, arm: Fix incorrect GIC address range sizesAndreas Sandberg
The GICv2 specifies that 8KiB of the memory map is allocated to the CPU interface and 4KiB is allocated to the distributor. The current distributor size is off by 1 and the CPU interface is completely off by a lot. Change-Id: I90a9f669a46a37d79c6cc542087cf91f2044f104 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Ciro Santilli <ciro.santilli@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/11769
2018-07-17dev, arm: accept and ignore writes to GIC APRn registersCiro Santilli
Otherwise the Linux kernel v4.17 boot fails with error: Tried to write Gic cpu at offset 0xd0 Change-Id: Ie8063212c9e2b29e2e4766801b4b9538e9eccbf8 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/11590 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-06-21dev-arm: Use recurseDeviceTree instead of custom in platformAndreas Sandberg
The platform code uses a custom mechanism to traverse the object hierarchy when generating device trees. This is highly undesirable since this breaks for common cases such as when SimObjects are stored in a list. Change-Id: I1b968e5fa1db62f1456e3c0ac3de47ab1299e58d Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/10781 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-06-15dev-arm: Fix the address range for some I/O devicesNikos Nikoleris
Previously, many devices were incorrecty configured to respond to an address range of size 0xfff. This changes fixes this and sets it to 0x1000. Change-Id: I4b027a27adf60ceae4859e287d7f34443b398752 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/11116 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-06-14dev-arm: Add new VExpress_GEM5_V1_Base PlatformRohit Kurup
Add a new VExpress_GEM5_V1_Base Platform which configures basic on chip devices. The original VExpress_GEM5_V1 will inherit the Base and add more on chip devices (currently only the HDLCD). This change will make it possible to create variations of the base platform with different devices. Change-Id: I21f9bf4f6217d87e811ff777f630122593eef013 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/10807 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-06-14dev-arm: Remove deprecated GIC test interfacesAndreas Sandberg
Change-Id: I4c5203b216387d9a4f041c7a00caea926e5cfca6 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/10810
2018-06-07dev-arm: Add a VirtIO MMIO device to VExpress_GEM5_V1Andreas Sandberg
Add an ARM-specific VirtIO MMIO device to the VExpress_GEM5_V1 platform. Change-Id: Id1e75398e039aad9d637f46f653cda9084d3d2fe Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Sudhanshu Jha <sudhanshu.jha@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Rekai Gonzalez Alberquilla <rekai.gonzalezalberquilla@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2327
2018-06-07dev-arm: Add a MMIO transport interface for VirtIOAndreas Sandberg
The MMIO interface currently only supports a subset of version 0.9.5 of the VirtIO specification. It has the following known limitations: * The queue size hint (the QUEUE_NUM register) is ignored. * Queue alignment is assumed to be hard-coded to VirtQueue::ALIGN_SIZE (4096 bytes). * Only 4096 byte pages are currently supported. Change-Id: Ifd318f5e5bddab0b6a42d8c8af9ff2fbb477f98b Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Rekai Gonzalez Alberquilla <rekai.gonzalezalberquilla@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2326 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-06-07dev-arm: Add a GIC interrupt adaptorAndreas Sandberg
Add GIC-based interrupt adaptor implementations that support PPI (ArmPPI) and SPI (ArmSPI) delivery. In addition to being useful for "normal" memory-mapped devices, the PPI adaptor makes it possible to use the same device model to generate both PPIs and SPIs (e.g., the PMU). Change-Id: I73d6591c168040faef2443430c4f1da10c387a2a Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2521 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-06-06dev, arm: Add support for HYP & secure timersAndreas Sandberg
Change-Id: I1a4849283f9bd5b1856e1378f7cefc33fc14eebd Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/10023 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-04-18dev, arm: Cleanup Pl050 interrupt handlingAndreas Sandberg
Add support for TX interrupts and cleanup existing RX interrupt handling. Change-Id: If2e5b0c0cc6fbeb2dce09e7e9d935647516b2c47 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Sudhanshu Jha <sudhanshu.jha@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9769
2018-04-17ps2: Unify constant namesAndreas Sandberg
Move ps2.hh to dev/ps2/types.hh and update the device models to consistently use well-known constants from this header. Change-Id: Iadfdc774495957beb82f3d341107b1e9232ffd4c Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9770 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-04-17dev, arm: Use the PS/2 framework in the Pl050 modelAndreas Sandberg
The Pl050 KMI model currently has its own keyboard and mouse models. Use the generic PS/2 interface instead. Change-Id: I6523d26f8e38bcc8ba399d4d1a131723645d36c7 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9767 Reviewed-by: Gabe Black <gabeblack@google.com>
2018-04-10dev: arm: SetScaling commands don't send parameter bytes.Gabe Black
These are single byte commands which change the mode of the mouse. They don't take any additional parameters like the SetRate or SetResolution. Change-Id: I29194916cfed5d3f4893947ef6d6cc636aee2419 Reviewed-on: https://gem5-review.googlesource.com/9701 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-03-20arch-arm, configs: Treat the bootloader rom as cacheable memoryNikos Nikoleris
Prior to this changeset the bootloader rom (instantiated as a SimpleMemory) in ruby Arm systems was treated as an IO device and it was fronted by a DMA controller. This changeset moves the bootloader rom and adds it to the system as another memory with a dedicated directory controller. Change-Id: I094fed031cdef7f77a939d94f948d967b349b7e0 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/8741 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-01-29arm: DT autogeneration - generate PCI nodeGlenn Bergmans
Enables automatic generation of Device Trees for RealView PCI host controllers. Note that some parts are more hard coded than you'd want, but this is due to the limited understanding the PCI host has of its configuration (i.e. it doesn't know all memory ranges). Fixing this, for now at least, went beyond the scope and intentions of the Device Tree generating code: use with care! Change-Id: I2041871e0eb4d04fb5191257c47dd38649d1c0cc Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5967 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-01-29arm: DT autogeneration - Generate energy controller nodeGlenn Bergmans
Adds Device Tree methods for the energy controller to allow for DVFS simulations with automatically generated DTB files Change-Id: Id8682f07dff1bbe63987e757faa0694e03ee86ab Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5966 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-01-29arm: DT autogeneration - autogenerate RealView Platform devicesGlenn Bergmans
Implements the Device Tree generating code for devices required by the RealView VExpress_GEM5_V1 platform Change-Id: I14244b2f3c028cbddba3c23ce7433fe3b301a0e8 Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5965 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-01-29arm: make Arm GenericTimer a ClockedObjectCurtis Dunham
Within a device tree, the GenericTimer device needs to point (via phandle) to a clock domain which is itself also an object in the device tree. Within gem5, clock domains are managed by making all clocked SimObjects inherit from ClockedObject rather than SimObject. Without this change, the GenericTimer is unable to generate the appropriate clock domain phandle, and will crash during DTB autogeneration. Change-Id: I6d3fb6362847c6a01720b2f14b3d595d1e59f01f Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/4960 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-12-14misc: Updates for gcc7.2 for x86Jason Lowe-Power
GCC 7.2 is much stricter than previous GCC versions. The following changes are needed: * There is now a warning if there is an implicit fallthrough between two case statments. C++17 adds the [[fallthrough]]; declaration. However, to support non C++17 standards (i.e., C++11), we use M5_FALLTHROUGH. M5_FALLTHROUGH checks for [[fallthrough]] compliant C++17 compiler and if that doesn't exist, it defaults to nothing (no older compilers generate warnings). * The above resulted in a couple of bugs that were found. This is noted in the review request on gerrit. * throw() for dynamic exception specification is deprecated * There were a couple of new uninitialized variable warnings * Can no longer perform bitwise operations on a bool. * Must now include <functional> for std::function * Compiler bug for void* lambda. Changed to auto as work around. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82878 Change-Id: I5d4c782a4e133fa4cdb119e35d9aff68c6e2958e Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/5802 Reviewed-by: Gabe Black <gabeblack@google.com>
2017-11-17sim: Implement load_addr_mask auto-calculationGeoffrey Blake
Recent Linux kernels for AArch64 have changed their start addresses but we still want to relocate the kernel to 0x80080000 which required hacking the load_addr_mask in Realview.py to be 0x7ffffff from 0xfffffff to mask off the proper number of MSBs to load the kernel in the desired location. To avoid having to make this change in the future again, we auto-calculate the load_addr_mask if it is specified as 0x0 in the System sim-object to find the most restrictive address mask instead of having the configuration specify it. If the configuration does specify the address mask, we use it instead of auto-calculating. Change-Id: I18aabb5d09945c6e3e3819c9c8036ea24b6c35cf Signed-off-by: Geoffrey Blake <Geoffrey.Blake@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2323 Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-11-08dev: Move generic serial devices to src/dev/serialAndreas Sandberg
Change-Id: I104227fc460f8b561e7375b329a541c1fce881b2 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/4291 Reviewed-by: Gabe Black <gabeblack@google.com>
2017-11-08dev: Refactor UART->Terminal interfaceAndreas Sandberg
The UART models currently assume that they are always wired to a terminal. While true at the moment, this isn't necessarily a valid assumption. This change introduces the SerialDevice class that defines the interface for serial devices. Currently, Terminal is the only class that implements this interface. Change-Id: I74fefafbbaf5ac1ec0d4ec0b5a0f4b246fdad305 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/4289 Reviewed-by: Gabe Black <gabeblack@google.com>
2017-10-31dev: Using Configurable image writer in HDLcdGiacomo Travaglini
The fixed image writer (which was dumping .bmp images only) has been replaced by the configurable one in HDLcd device. Default format is Auto, which gives gem5 the freedom to choose the format it prefers. Change-Id: I0643266556bb10b43cdebd628f6daa2cd5e105dd Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5183 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-10-31base: Introducing utility for writing raw data in png formatGiacomo Travaglini
Originally it was possible to use a Bitmap writer class for dumping a framebuffer snapshot in a .bmp file. This patch enables you to choose another format. In particular it implements the writing of PNG Images using libpng library. The latter has to be already installed in your machine, otherwise gem5 will default to the Bitmap format. This configurable writer has been introduced in the VNC frame dumping mechanism, which is storing changed frame buffers from the VNC server Change-Id: Id7e5763c82235f1ce90381c8486b85a7cce734ce Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5181 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-08-01kvm, arm: Switch to the device EQ when accessing ISA devicesAndreas Sandberg
ISA devices typically run in the device event queue. Previously, we assumed that devices would perform their own EQ migrations as needed. This isn't ideal since it means we have different conventions for IO devices and ISA devices. Switch to doing migrations in the KVM CPU instead to make the behavior consistent. Change-Id: I33b74480fb2126b0786dbdbfdcfa86083384250c Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/4288 Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-07-12arm: Refactor some Event subclasses to lambdasSean Wilson
Change-Id: Ic59add8afee1d49633634272d9687a4b1558537e Signed-off-by: Sean Wilson <spwilson2@wisc.edu> Reviewed-on: https://gem5-review.googlesource.com/3929 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-07-10dev-arm: Add ID registers to the GIC modelJose Marinho
Implement GICD_IIDR, GICC_IIDR, GICD_PIDR0, GICD_PIDR1, GICD_PIDR2, and GICD_PIDR3. Change-Id: I4f6b5a6303907226e7d8e2f677543b3868c02e7b Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/3961
2017-07-10dev-arm: Don't unconditionally overwrite bootloader paramsJose Marinho
The bootloader arguments were previously defaulting to a predetermined value even if initialized elsewhere in the platform config script. This commit fixes this issue by not calling the default initialization routine if the bootloader is already defined. Change-Id: Id80af4762b52dc036da29430b2795bb30970a349 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/3967
2017-07-07kvm, arm: don't create interrupt events while saving GIC stateCurtis Dunham
If an interrupt was pending according to Kvm state during a drain, the Pl390 model would create an interrupt event that could not be serviced, preventing the system from draining. The proper behavior is for the Pl390 not actively being used for simulation to just skip the GIC state machine that delivers interrupts. Change-Id: Icb37e7e992f1fb441a9b3a26daa1bb5a6fe19228 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/3661 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-07-05dev,arm: add Kvm mode of operation for CP15 timerCurtis Dunham
The timer device exposed via the ARM ISA, also known as the "CP15 timer" due to its legacy coprocessor encodings, is implemented by the GenericTimerISA class. During Kvm execution, however, this functionality is directly emulated by the hardware. This commit subclasses the GenericTimer, which is (solely) used by GenericTimerISA, to facilitate Kvm in much the same way as the prior GIC changes: the gem5 model is used as the backing store for state, so checkpointing and CPU switching work correctly, but isn't used during Kvm execution. The added indirection prevents the timer device from creating events when we're just updating its state, but not actually using it for simulation. Change-Id: I427540d11ccf049c334afe318f575146aa888672 Reviewed-on: https://gem5-review.googlesource.com/3542 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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