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2024-08-23region: Turn region_end() into an inclusive region_last()Nico Huber
The current region_end() implementation is susceptible to overflow if the region is at the end of the addressable space. A common case with the memory-mapped flash of x86 directly below the 32-bit limit. Note: This patch also changes console output to inclusive limits. IMO, to the better. Change-Id: Ic4bd6eced638745b7e845504da74542e4220554a Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/79946 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-08-15commonlib/bsd/string: Fix pointer overflow for strnlen()Yu-Ping Wu
When `maxlen` is large (such as SIZE_MAX), the `end` pointer will overflow, causing strnlen() to incorrectly return 0. To not make the implementation over-complicated, fix the problem by using a counter. BUG=b:359951393 TEST=make unit-tests -j BRANCH=none Change-Id: Ic9d983b11391f5e05c2bceb262682aced5206f94 Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83914 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2024-08-14commonlib/bsd: Add strcat() and strncat() functionsYu-Ping Wu
An upcoming vboot feature [1] will need strcat() to be defined in string.h. Therefore, add strcat() and strncat() to commonlib/bsd. Remove those functions from libpayload. [1] https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/5650810 Change-Id: If02fce0eafb4f6fa01d8bab17d87a32360f4ac83 Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83765 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-08-14commonlib/bsd: Add strlen() and strnlen() functionsYu-Ping Wu
Add strlen() and strnlen() to commonlib/bsd by rewriting them from scratch, and remove the same functions from coreboot and libpayload. Note that in the existing libpayload implementation, these functions return 0 for NULL strings. Given that POSIX doesn't require the NULL check and that other major libc implementations (e.g. glibc [1]) don't seem to do that, the new functions also don't perform the NULL check. [1] https://github.com/bminor/glibc/blob/master/sysdeps/i386/strlen.c Change-Id: I1203ec9affabe493bd14b46662d212b08240cced Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83830 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-06-22treewide: Move device_tree to commonlibMaximilian Brune
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: I990d74d9fff06b17ec8a6ee962955e4b0df8b907 Reviewed-on: https://review.coreboot.org/c/coreboot/+/77970 Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-06-11treewide: Move skip_atoi function to commonlibKapil Porwal
BUG=none TEST=Build and verify on Screebo TEST=make unit-tests ``` $ make tests/commonlib/bsd/string-test [==========] tests_commonlib_bsd_string-test(tests): Running 1 test(s). [ RUN ] test_skip_atoi [ OK ] test_skip_atoi [==========] tests_commonlib_bsd_string-test(tests): 1 test(s) run. [ PASSED ] 1 test(s). ``` Change-Id: Ifaaa80d0c696a625592ce301f9e3eefb2b4dcd98 Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/82910 Reviewed-by: Jakub Czapiga <czapiga@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subratabanik@google.com>
2024-02-24treewide: Move list.h to commonlibMaximilian Brune
It is needed in order to move device_tree.c into commonlib in a subsequent commit. Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: I16eb7b743fb1d36301f0eda563a62364e7a9cfec Reviewed-on: https://review.coreboot.org/c/coreboot/+/77968 Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-02-08commonlib: Change GCD function to always use 64 bitsJulius Werner
It seems that we have some applications where we need to calculate a GCD in 64 bits. Now, we could instantiate the algorithm multiple times for different bit width combinations to be able to use the most efficient one for each problem... but considering that the function usually only gets called once per callsite per stage, and that software emulation of 64-bit division on 32-bit systems doesn't take *that* long either, we would probably usually be paying more time loading the second instance of the function than we save with faster divisions. So let's just make things easy and always do it in 64-bit and then nobody has to spend time thinking on which version to call. Change-Id: I028361444c4048a0d76ba4f80c7334a9d9983c87 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80319 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yidi Lin <yidilin@google.com>
2024-02-02tests: Add some more ipchksum() test casesJulius Werner
This patch adds a few more test cases for the IP checksum algorithm to catch more possible corner cases (large data with more than 64K carries, unaligned data, checksum addition with offset, etc.). Change-Id: I39b4d3f1bb833894985649872329eec88a02a22c Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80252 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Jakub Czapiga <czapiga@google.com>
2024-02-02lib: Move IP checksum to commonlibJulius Werner
This patch moves the IP checksum algorithm into commonlib to prepare for it being shared with libpayload. The current implementation is ancient and pretty hard to read (and does some unnecessary questionable things like the type-punning stuff which leads to suboptimal code generation), so this reimplements it from scratch (that also helps with the licensing). This algorithm is prepared to take in a pre-calculated "wide" checksum in a machine-register-sized data type which is then narrowed down to 16 bits (see RFC 1071 for why that's valid). This isn't used yet (and the code will get optimized out), but will be used later in this patch series for architecture-specific optimization. Change-Id: Ic04c714c00439a17fc04a8a6e730cc2aa19b8e68 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80251 Reviewed-by: Yidi Lin <yidilin@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jakub Czapiga <czapiga@google.com>
2024-01-26tests: Rename Makefiles from .inc to .mkMartin Roth
The .inc suffix is confusing to various tools as it's not specific to Makefiles. This means that editors don't recognize the files, and don't open them with highlighting and any other specific editor functionality. This issue is also seen in the release notes generation script where Makefiles get renamed before running cloc. Signed-off-by: Martin Roth <gaumless@gmail.com> Change-Id: Id09eafd293a54198aab87281f529749325df8b07 Reviewed-on: https://review.coreboot.org/c/coreboot/+/80122 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
2023-11-04commonlib: Add GCD functionYidi Lin
Implement a simple GCD function. BUG=b:307790895 TEST=emerge-geralt coreboot TEST=make tests/commonlib/bsd/gcd-test Change-Id: I21819cda4299b3809b8ca7a95cbdc6a87e4b3481 Signed-off-by: Yidi Lin <yidilin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/78798 Reviewed-by: Martin L Roth <gaumless@gmail.com> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-09-07tests/commonlib/rational-test: Use test group runner wrapperJakub Czapiga
coreboot unit-tests framework requires tests to use cb_run_group_tests() instead of cmocka_run_group_tests() for Jenkins to work correctly. Wrapper ensures that each test has its own report file and does not overwrite results of other tests. Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: Iead63cab0465f37b2da0c7b3ef256057e3a191a2 Reviewed-on: https://review.coreboot.org/c/coreboot/+/67371 Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-08-03commonlib: Add support for rational number approximationVinod Polimera
This patch adds a function to calculate best rational approximation for a given fraction and unit tests for it. Change-Id: I2272d9bb31cde54e65721f95662b80754eee50c2 Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66010 Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-01-14tests: Fix tests code and comments styleJakub Czapiga
This patch applies clang-format settings to most of tests files. Some files were fixed "by-hand" to exclude some lines, which whould be less readable after automatic style fixing. Moreover, some comments (mostly in tests/lib/edid-test.c) were adjusted to match coreboot coding style guidelines. Change-Id: I69f25a7b6d8265800c731754e2fbb2255f482134 Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/60970 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
2021-09-01tests: Improve test output readabilityJakub Czapiga
When running multiple tests, e.g. by using unit-tests target, it is hard to differentiate, which output comes from which file and/or configuration. This patch makes the output easier to analyze and understand by using new wrapper macro cb_run_group_tests(). This macro uses __TEST_NAME__ value (containing test path and Makefile test name) as a group name when calling cmocka group runner. Example: Test path: tests/lib/ Makefile test name: cbmem_stage_cache-test Test group array name: tests Result: tests/lib/cbmem_stage_cache-test(tests) Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: I4fd936d00d77cbe2637b857ba03b4a208428ea0d Reviewed-on: https://review.coreboot.org/c/coreboot/+/57144 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-08-02helpers: Add GENMASK macroYu-Ping Wu
The GENMASK is defined in multiple files (with various names such as MASKBIT), which sets certain consecutive bits to 1 and leaves the others to 0. To avoid duplicate macros, add GENMASK macro to helpers.h. GENMASK(high, low) sets bits from `high` to `low` (inclusive) to 1. For example, GENMASK(39, 21) gives us the 64-bit vector 0x000000ffffe00000. Remove duplicate macro definitions. Also utilize GENMASK for _BF_MASK in mmio.h. BUG=none TEST=make tests/commonlib/bsd/helpers-test TEST=emerge-cherry coreboot BRANCH=none Change-Id: If2e7c4827d8a7d27688534593b556a72f16f0c2b Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/56543 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-06-26helpers: Introduce retry macroYu-Ping Wu
Introduce a macro retry(attempts, condition, expr) for retrying a condition, which is extensively used in coreboot. Example usage: if (!retry(3, read32(REG) == 0, mdelay(1)) printk(BIOS_ERR, "Error waiting for REG to be 0\n"); BUG=none TEST=make tests/commonlib/bsd/helpers-test TEST=emerge-cherry coreboot BRANCH=none Change-Id: I421e4dcab949616bd68b3a14231da744b9f74eeb Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55778 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-04-21commonlib/region: Turn addrspace_32bit into a more official APIJulius Werner
We had the addrspace_32bit rdev in prog_loaders.c for a while to help represent memory ranges as an rdev, and we've found it useful for a couple of things that have nothing to do with program loading. This patch moves the concept straight into commonlib/region.c so it is no longer anchored in such a weird place, and easier to use in unit tests. Also expand the concept to the whole address space (there's no real need to restrict it to 32 bits in 64-bit environments) and introduce an rdev_chain_mem() helper function to make it a bit easier to use. Replace some direct uses of struct mem_region_device with this new API where it seems to make sense. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Ie4c763b77f77d227768556a9528681d771a08dca Reviewed-on: https://review.coreboot.org/c/coreboot/+/52533 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2020-06-12tests: Add some basic warnings and fix resulting issuesJulius Werner
The current test framework builds the test code without any warnings at all, which isn't great -- we have already slipped in some cases of non-void functions not returning a defined value, for example. It would likely be overkill to try to use all the same warnings we use for normal coreboot code (e.g. some stuff like -Wmissing-prototypes makes cmocka's __wrap_xxx() mock functions unnecessarily cumbersome to work with, and other things like -Wvla may be appropriate for firmware but is probably too aggressive for some simple test code). Therefore, let's just add some of the stuff that points out the most obvious errors. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I4d9801f52a8551f55f419f4141dc21ccb835d676 Reviewed-on: https://review.coreboot.org/c/coreboot/+/42259 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jan Dabros <jsd@semihalf.com> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
2020-05-28Remove new additions of "this file is part of" linesElyes HAOUAS
Change-Id: I6c69dcad82ee217ed4760dea1792dd1a6612cd8b Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41606 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2020-05-19tests: Add region-test for rdev APIJulius Werner
This patch adds a basic test for the common region and region_device APIs, sanity checking the basic functions and things like overflow-handling. There is certainly more that could be added here, but it's a start. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I4932402f54768557e5b22b16e66220bd90ddebfd Reviewed-on: https://review.coreboot.org/c/coreboot/+/41046 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Jan Dabros Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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