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2023-02-13src/sbom/Makefile.inc: Fix variable expansionMaximilian Brune
Make does its work in two distinct phases. The first one basically initializes and expands all variables, which are not in a recipe and the second expands all variables inside recipes and then executes the recipes if necessary. Currently on some mainboards it can happen that cpu_microcode_bins variable is filled with microcode paths AFTER swid-files-y is expanded in the prerequisite for the sbom rule. That causes the "$(build-dir)/intel-microcode-%.json pattern matching rule not to be invoked. At the time, when the recipe is executed however (second phase of make), swid-files-y will now contain the cpu microcode paths from cpu_microcode_bins. That causes the goswid tooling to fail since the necessary files were never created, since "(build-dir)/intel-microcode-%.json" target was never executed. In order to trigger the expansion of swid-files-y at the second make phase (after cpu_microcode_bins is fully filled), this patch makes use of make's secondary expansion feature. Before on some boards (including samsung/lumpy) the goswid tool complained about not finding the microcode sbom files. Test: build samsung/lumpy with CONFIG_SBOM_MICROCODE=y Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: I884469a388fd48be89d74ccda686dd8f299d63eb Reviewed-on: https://review.coreboot.org/c/coreboot/+/72660 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
2023-01-31src/sbom: Add code documentation + fix misspellingMaximilian Brune
Functionality wise nothing changed, except that the first misspellings caused SBOM_BIOS_ACM_PATH and SBOM_SINIT_ACM_PATH to not work before. - Fix misspelling of CONFIG_BIOS_ACM_PATH -> CONFIG_SBOM_BIOS_ACM_PATH - Fix misspelling of CONFIG_SINIT_ACM_PATH -> CONFIG_SBOM_SINIT_ACM_PATH - Put SBOM_COMPILER_ handling into Kconfig instead of Makefile - Reorder CONFIG_ paths (for readablity) - Add in code comments (for readablity) Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: If67bc3bd0d330b9b5f083edc4d1697e92ace1ea0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/72379 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
2023-01-11src/sbom/Makefile.inc: Remove quotes on CONFIG_SBOM_ pathsMaximilian Brune
Make will not find the build targets unless quotes are removed. Change-Id: Iddf4e0cd8a11eaf327d6f55baf38a30c566d0f28 Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/71519 Reviewed-by: Felix Singer <felixsinger@posteo.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-08-22Add SBOM (Software Bill of Materials) GenerationMaximilian Brune
Firmware is typically delivered as one large binary image that gets flashed. Since this final image consists of binaries and data from a vast number of different people and companies, it's hard to determine what all the small parts included in it are. The goal of the software bill of materials (SBOM) is to take a firmware image and make it easy to find out what it consists of and where those pieces came from. Basically, this answers the question, who supplied the code that's running on my system right now? For example, buyers of a system can use an SBOM to perform an automated vulnerability check or license analysis, both of which can be used to evaluate risk in a product. Furthermore, one can quickly check to see if the firmware is subject to a new vulnerability included in one of the software parts (with the specified version) of the firmware. Further reference: https://web.archive.org/web/20220310104905/https://blogs.gnome.org/hughsie/2022/03/10/firmware-software-bill-of-materials/ - Add Makefile.inc to generate and build coswid tags - Add templates for most payloads, coreboot, intel-microcode, amd-microcode. intel FSP-S/M/T, EC, BIOS_ACM, SINIT_ACM, intel ME and compiler (gcc,clang,other) - Add Kconfig entries to optionally supply a path to CoSWID tags instead of using the default CoSWID tags - Add CBFS entry called SBOM to each build via Makefile.inc - Add goswid utility tool to generate SBOM data Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: Icb7481d4903f95d200eddbfed7728fbec51819d0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/63639 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>