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2024-03-23lib: rust_support: impl mutex_t wrapperKhyber Sen
Implement `Mutex` by wrapping the C `mutex_t` API. `Mutex` is modeled on `std::sync::Mutex`'s API. Test: build.py generic-x86_64-test Bug: 298705967 Change-Id: I2443da0757796f7859bc6ff38d99b104d40e8da0
2024-03-18vmm: Make vmm_alloc_physical_etc paddr array constArve Hjønnevåg
vmm_alloc_physical_etc does not modify this array, so it should be const so the caller does not have to have a writable array. Bug: 298705967 Change-Id: Ieed94570c33763565e67a170382b3d1e10f120f2
2023-12-05Implement vdprintfTomasz Wasilczyk
Bug: 302723053 Test: build trusty in its own repo Change-Id: I8cbd2daea4d414fc3de95fd52f87226ee3261f2b
2023-10-11kernel: vmm: Expose vmm_find_region functionZhong,Fangjian
Bug: 119111590 Change-Id: I879130874cf1b9512bf7f44a4c4e2e33f240bdac
2023-10-11kernel: vm: Add api to lock aspaceArve Hjønnevåg
Will be used by x86 user-copy functions which needs to check permissions separately from the copy Bug: 304625515 Change-Id: Ibb34bed675f3e561a8072268bed400f3ffdcfc56
2023-08-14move pow2.h to shared folder and add round_up macroYurii Shutkin
Change-Id: I90fd811c2435bdb74126e6d51f87748a9710e369 Bug: 286029819 Test: trusty.hwaes.test
2023-08-03trusty:lk: Enabled PAC for threads and context switch.Mike McTernan
Bug: 261566834 Test: build.py, tested on device Change-Id: Ica3ba9ecb55768c5510361ec4aa1be9dc0c61e28
2023-07-21Reset thread cookie upon exitPer Larsen
Once a thread cookie has been corrupted, we cannot use the existing test facility to exit a thread on panics without resetting its cookie such that it can exit without triggering additional panics. We only do so for test threads that have the exit-on-panic flag set. If this flag is set, we are also more lenient w.r.t. the thread state. In thread_resched, the call to get_top_thread is moved past the first call to thread_cookie_check. This is necessary to cleanly exit a test thread with a corrupted cookie because thread_preempt might have put said thread at the head of its run queue. Bug: 215740695 Change-Id: I68a95cff523f323370c5fc55851679e146214684 Signed-off-by: Per Larsen <perlarsen@google.com>
2023-07-21Add cookie to thread structurePer Larsen
This change adds a 64-bit random value (cookie) which is expected to be identical across all threads. We use rand_get_bytes as our source of randomness. Threads are checked in thread_resched, thread_resume, and other functions that put threads on the run queues. Bug: 215740695 Change-Id: I1b91059bc3bbf53071c55175c2690b833b9728c0 Signed-off-by: Per Larsen <perlarsen@google.com>
2023-07-20trusty:lk: Add PAC feature detection functions.Mike McTernan
Bug: 261566834 Test: build.py Change-Id: I087ba3f8c7b78f579d30b82cca7f73eee97a3d1d
2023-06-16add ROUND_UP macro similar to round_up functionYurii Shutkin
Change-Id: I810ea890a6eb58723d6a2b303838454b41738e0b Test: prepare_plat_dma alignment test Bug: 286027554
2023-05-02arch: arm64: print region infoMarco Nelissen
Print the name of the region that an address belongs to in crash dumps. Bug: none Test: scudotest Change-Id: I888ec03a386df4b4a4ea3eb8b26322564f57b083
2023-04-03lk: sve support functionsRaphael Herouart
Utilities to help enable/disable SVE or check if it is supported. Bug: 270942549 Change-Id: Iebbee43ce886d6d41b025a17d41d0f3ee18e2f99
2023-03-09trusty:lk: Add bti c annotation support.Mike McTernan
Add FUNCTION() asm macro override capability, and add bti pads for arm64. Bug: 260397427 Test: build.py (all targets) Test: boot to Android home Change-Id: I929adc9e6d3a9fe0ebee4fcb2e4421d43eb25079
2023-01-31lk: Add kernel BTI support.Mike McTernan
Add support for ARM-A v8.5 Branch Target Identification. This is a mandatory Aarch64 feature that checks the BR and BLR instructions land on a BTI instruction. If this happens in a 'guarded' memory page (a new GP bit in the PTE is set), an exception is raised and execution can be halted (panic). This resists Jump Oriented Programming (JOP) attacks by reducing available code 'gadgets' Bug: 260397427 Test: build.py qemu-generic-arm64-test-debug Test: build.py qemu-generic-arm32-test-debug Test: build.py qemu-generic-arm64-test-debug, Qemu 7 with cpu=max (BTI supported) Change-Id: I682cb40be61b4819caa199e65338beeb452da766
2023-01-31arch: arm64: check whether MTE is functionalMarco Nelissen
Check whether tags can be set and get, and move the existing mte feature checks out of trusty lib (and into lk) Bug: 231693178 Test: boot with and without MTE Change-Id: Iff02d7a3c001e734ed71e5be02089279402ac3f9
2022-12-21include/shared: Align symbol size inserted by INCBIN_ALIGNED to 4 bytesAyrton Munoz
This commit ensures the 4 bytes inserted for the symbol size by INCBIN_ALIGNED are always aligned to 4 bytes. This prevents unaligned accesses in the case that the alignment parameter is less than 4. It also simplifies how offsets are computed when using this macro for multiple embedded device tree blobs. Bug: 231151995 Change-Id: I812fe5a87914b7693fe5231e0bec117bb86f434f
2022-12-20kernel: thread: Add platform_cpu_priority_set api.Sudhin Mishra
Add platform_cpu_priority_set() calls whenever the current or targeted CPU changes. This will be used by trusty to set a 'shadow' priority shared with the host operating system. Bug: 251903627 Test: <TBD> Change-Id: I52a8431e3d674a3756ccdb4c9eb4eb42f80836cf
2022-12-17arch: arm64: support tagged memory allocationsMarco Nelissen
Bug: 231155845 Test: boot, scudotest Change-Id: Ic5e70a88405cb5f4e952b283c7c4c1ae7b0dbaf2
2022-12-16pmm: Add an API to add arena with reserved regionsMichael Ryleev
This CL adds new pmm_add_arena_late_etc() routine that is very similar to an existing pmm_add_arena_late() but optionally reserve memory regions at the beginning and/or at the end of arena. Bug: 261907557 Change-Id: I5b74e662793805d5545b3368fabf9db8a802f6e2 Signed-off-by: Michael Ryleev <gmar@google.com>
2022-12-15kernel/vm/vmm: Implement VMM_FLAG_NO_PHYSICALDmitriy Filchenko
Add the ability to reserve address space for future allocations without mapping physical memory. Bug: 231152307 Change-Id: If628e58206e903195d47d3276dbe5e292e0e7757
2022-12-15kernel/vm/vmm: Add memory quotas to address spacesDmitriy Filchenko
This change allows passing an optional `size` parameter when creating an address space. If set, the address space will fail allocations that go over this size Bug: 231152307 Change-Id: I7c2765f0600ce634ad0726f4b3a79b4094b82155
2022-12-15arch: arm64: add an API to change an existing mappingMarco Nelissen
Bug: 231155845 Test: build, boot, mmutest Change-Id: I09278bf1e4f7566fd2a74c6a1ff39607f5ccf7d3
2022-12-15kernel/vm/pmm: Allow resource groups in PMM allocationsDmitriy Filchenko
Add an optional argument to PMM allocations which will track created `pmm_vmm_obj`s memory usage against the provided `res_group`. Bug: 231152307 Change-Id: I37ae553a725a7b31e502b8f9719f94d546ad5bb9
2022-12-14kernel/vm/pmm: Add the ability to reserve physical pagesDmitriy Filchenko
Currently, the heap segment for each app is allocated and mapped on app startup. Scudo will only map heap regions as necessary. This patch adds the ability to reserve physical pages ahead of time to match existing behavior. Bug: 231152307 Change-Id: I053a1e45c8c420e9f805838dd7c7c68b91620262
2022-12-07include/shared: Make INCBIN sections allocatableAyrton Munoz
When the .incbin assembler directive doesn't recognize a section by its name, it creates a new section without any flags. This means that it creates sections that are not allocatable so the sections don't end up in the final executables which leads to linker errors if something references the embedded binary. This commit makes all sections created by INCBIN allocatable so the linker will place them in the executables. Bug: 231151995 Change-Id: Iac88cb0c6581167209b04ba4b1640887f8eef47b
2022-12-06dev: usbc: fix printf format mismatch in function usbc_dump_transferArmelle Laine
Bug: 259250505 Change-Id: Ie3da9b6c4ea97dc3630c7b1c0559433057c73e9f
2022-12-06lib: heap: miniheap: fix uninitialized variablesArmelle Laine
Bug: 252870906 Change-Id: I59b8f246e29ecead08ae653ce6e7cf9fc6101840
2022-12-05include/shared: Add INC{BIN,FILE}_ALIGNEDAyrton Munoz
INC{BIN,FILE} always use 4-byte alignment which is unsuitable for embedding devicetree blobs (dtbs) in binaries. This adds new INC{BIN,FILE}_ALIGNED macros that take an extra alignment parameter to allow embedding dtbs with 8-byte alignment. This fixes the rare devicetree test failures caused by libfdt returning FDT_ERR_ALIGNMENT when the dtb happens to not be aligned to 8 bytes. Bug: 231151995 Change-Id: Ibd88156ef19cdd716ca5bb1fbce9ec4e7073e689
2022-11-11arch: arm64: add mmap flag for MTE protected memoryMarco Nelissen
Bug: 231155845 Test: scudotest Change-Id: Idf1cb980f6e1be42f3057502acef3e310aa3a27e
2022-10-28lib/libc: Add option to replace LK libc with muslAyrton Munoz
This commit adds an LK_LIBC_IMPLEMENTATION build flag that can be set to `musl` or `lk` to select the kernel's libc. The default (musl) is set in engine.mk to allow projects that want to keep using lk to override it. This is also required to allow conditionally building tests in kerneltests-inc.mk as libc-trusty/test only compiles with musl (LK libc is missing many headers and function definitions). When a libc module is selected in kernel/rules.mk we also define an LK_LIBC_IMPLEMENTATION_IS_[LK,MUSL] macro to allow conditionally compiling code based on which libc is used if it's necessary. This commit also moves off_t and ssize_t from lk/types.h to LK's sys/types.h to only keep the LK definitions (which differ from musl on some archs) when using LK libc. It also includes inttypes.h in lk/types.h (used by both musl and LK) to allow using the PRI macros it defines. Bug: 230134581 Change-Id: I7a6c4b6d50d206241775e83961ee166689906515
2022-10-28kernel/thread: Add TLS entry for libc stateAyrton Munoz
This adds a TLS entry for libc-specific info when using musl. The new entry is a pointer to a libc_state struct (defined in libc-trusty's libc_state.h) which includes errno and locale information which is required by musl's stdio implementation. Bug: 230134581 Change-Id: I0d6e33cfbe8d829fbf7a37dfdb233bda41e75580
2022-10-26arch: arm64: take top-byte-ignore into account when checking addressesMarco Nelissen
Test: boot Change-Id: I724a5d22ebfa7fe93bd0538f3409e625173a480b
2022-10-25lib/console: Conditionally compile panic_shell_startAyrton Munoz
Bug: 230134581 Change-Id: I90a71ed2ccfae048a754d43099dbcbee69913b5b
2022-10-17include/compiler.h: Replace countof macro with inline function in C++Ayrton Munoz
libcxx's locale.cpp defines an internal countof function so this commit replaces that macro with an inline function definition whenever compiler.h is included in C++. It also adds the countof macro in two host tests that call countof on pointers to empty arrays since zero-sized arrays are not permitted in C++. Bug: 230134581 Change-Id: I4d8dc311f86a1e6df5231ca4a16587023becca58
2022-10-06lib/libc: Move sys/types.h to lk/types.hAyrton Munoz
Musl provides its own version of this header, but the LK version has LK-specific type and macro definitions that we'll still need after switching the kernel to musl. To keep these definitions musl's sys/types.h will include lk/types.h. Since we are currently using LK libc, this commit keeps LK's sys/types.h to #include lk/types.h. After switching to musl this sys/types.h should be removed. Bug: 230134581 Change-Id: I3a7a1a9be0ed26349366b45d006a1fe4316ea733
2022-09-28lib/libc: Switch to #pragma once in err.hAyrton Munoz
Musl's err.h will include LK's uapi/err.h when we switch the kernel to musl. This change replaces LK's err.h's include guards with `#pragma once` to allow this. Bug: 230134581 Change-Id: I7837d6db5a9f98aa3b02ff31c2f265a6e27ffb73
2022-09-28Switch to PRIxPTR format specifier macrosAyrton Munoz
LK defines uintptr_t as `unsigned long` for every arch, but musl defines it as `unsigned int` for ARM so this switches %lx to PRIxPTR when printing `uintptr_t`s. It also adds PRI macros for the paddr_t, vaddr_t and addr_t typedefs and changes the definition of PRIxPTR_USER when IS_64BIT is false. Bug: 230134581 Change-Id: I8bb5adef690a65adf426816f51313db3b1df9c3a
2022-09-27Switch to PRI*64 macros for format specifiersAyrton Munoz
LK defines uint64_t as `unsigned long long` for every arch, but musl defines it as `unsigned long` for aarch64 and x64 so this switches %llx to PRIx64 when printing `uint64_t`s. There are analogous changes for %llu and %lld. This also adds a PRI macro for printing `asid_t`. Bug: 230134581 Change-Id: Iafa6b4c1d341832e3aeead0ee3fc517b8e3b1ff6
2022-09-14[kernel][thread] Remove build-time dependency PLATFORM_HAS_DYNAMIC_TIMER ↵Sudhin Mishra
where not needed The Thread module currently has build-time dependency PLATFORM_HAS_DYNAMIC_TIMER around code using timer interfaces. Since the timer interfaces encapsulate whether a hardware timer is optionally selected or not, and the interfaces work properly with or without this option, it is no longer necessary for the callers of these interfaces to have such conditional-compilation dependency. Also, remove thread_timer_tick() and all its call references. Bug: 234715025 Test: timertest Change-Id: Iff03b0fb88ac098d882a06d79f5f1e99b9ca6896
2022-08-18include/debug.h: Prefix LK debug levelsAyrton Munoz
This prefixes LK's internal debug level macros to avoid name collisions with macros defined in other headers. `dprintf` still takes a debug level without prefix to avoid having to change each placed it's used, but the defined macros all have prefixes when LK_DEBUGLEVEL_NO_ALIASES is true. Also the deprecated debug level macros are still defined if LK_DEBUGLEVEL_NO_ALIASES is false or undefined. This is the default to avoid breaking code that uses the debug level macros directly, though downstream code should migrate to the prefixed macros. Bug: 230134581 Change-Id: Ia5bf456b32a265e696d85d69603c764507523200
2022-08-12[kernel][pmm] Add pmm_add_arena_late() routineMichael Ryleev
In contrast with existing pmm_add_arena() routine this new implementation: - does not use boot time allocator for page tracking structures so can be used at later boot stages - allocates page tracking structures from newly added memory regions making arenas independent from each other - can be used for adding memory regions that are not kernel mapped at boot time. Bug: 231345893 Change-Id: I57dd389696119c6c153809c8836a4525cff2e886
2022-07-22Revert "include/debug.h: Namespace LK debug levels by prefixing ..."Andrei Homescu
Revert submission 2161077-trusty-kernel-namespace-debuglevels Reason for revert: broke downstream builds Reverted Changes: I07fc3efe4:include/debug.h: Namespace LK debug levels by pref... Ibbc7a15ed:lib/trusty: Namespace LK debug levels by prefixing... Change-Id: I260f73bf06708db7944b200dc669d5c935a4136d
2022-07-20include/debug.h: Namespace LK debug levels by prefixing macro definitionsAyrton Munoz
The debug level macros defined by LK conflict with the LogSeverity enum variants in libbase. This commit prefixes the `level` argument passed to dprintf with `LK_DEBUGLEVEL_` to avoid this conflict without having to change every place dprintf is used. Bug: 230134581 Change-Id: I07fc3efe428555649799bdef7b269c1cd31678d2
2022-07-20kernel/thread: Cast atomic_store_explicit arg to allow including header in C++Ayrton Munoz
The first two arguments to atomic_store_explicit must have the same type which previously wasn't the case because the SMP_MAX_CPUS macros defined in the build system isn't an int32_t literal. Bug: 230134581 Change-Id: I0943bd5882a5eb09e409a656fc16aaa1d224121e
2022-07-20include/compiler.h: Redefine LK's __WEAK macro to work with muslAyrton Munoz
Musl defines a `weak` macro that expands to `__attribute__((__weak__))` so this commit changes LK's __WEAK macro to allow using either. Bug: 230134581 Change-Id: I1197f252c43a4719cd04186a4ac5d3ac65109f56
2022-02-02[kernel][vm] Implement generic KASLR codeAndrei Homescu
Implements the generic part of KASLR which randomly selects a load bias and shifts the virtual address of the kernel by that bias. Bug: 80147716 Change-Id: If25dbd1138a77009ce047400354943cd56e1e818
2022-02-01[kernel][vm] Add initial MMU mapping functionAndrei Homescu
Adds a new vm_map_initial function that applies the initial mappings and is called from early MMU initialization context. Bug: 80147716 Change-Id: I3fd0b7b11c0fb9b31c3b32041f6955a6d97767e2
2022-02-01[kernel][vm] Add boot_alloc_memalign functionAndrei Homescu
This provides a second version of the boot_alloc_mem() function that takes a second alignment parameter. Also updates the kernel/vm.h header to declare the two functions. Bug: 80147716 Change-Id: Ia83b2ecedafd44b3de7f20d434779dc600133b32
2022-02-01[kernel][vm] Add kernel relocation codeAndrei Homescu
Add a relocate_kernel() function that applies dynamic relocations to the kernel image. This also requires the kernel to be PIE, which is now the default in all cases. Bug: 80147716 Change-Id: Ie86fdbd4ddb4811c134cd883c8f7f47ae8be25c3
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