Changes in Kconfig

22913993 - hwrng: Kconfig - Fix indentation of HW_RANDOM_CN10K help text

Wed, 19 Feb 2025 15:03:32 +0000

hwrng: Kconfig - Fix indentation of HW_RANDOM_CN10K help textChange the indentation of the help text of the HW_RANDOM_CN10K symbolfrom one TAB plus one space to one TAB plus two spaces, as is customary.Signed-off-by: Geert Uytterhoeven Reviewed-by: Dragan Simic Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

8eff8eb8 - hwrng: rockchip - add support for rk3588's standalone TRNG

Tue, 04 Feb 2025 15:35:50 +0000

hwrng: rockchip - add support for rk3588's standalone TRNGThe RK3588 SoC includes several TRNGs, one part of the Crypto IP block,and the other one (referred to as "trngv1") as a standalone new IP.Add support for this new standalone TRNG to the driver by bothgeneralising it to support multiple different rockchip RNGs and thenimplementing the required functionality for the new hardware.This work was partly based on the downstream vendor driver by Rockchip'sLin Jinhan, which is why they are listed as a Co-author.While the hardware does support notifying the CPU with an IRQ when therandom data is ready, I've discovered while implementing the code to usethis interrupt that this results in significantly slower throughput ofthe TRNG even when under heavy CPU load. I assume this is because withonly 32 bytes of data per invocation, the overhead of reinitialising acompletion, enabling the interrupt, sleeping and then triggering thecompletion in the IRQ handler is way more expensive than busylooping.Speaking of busylooping, the poll interval for reading the ISTAT is anatomic read with a delay of 0. In my testing, I've found that this givesus the largest throughput, and it appears the random data is readypretty much the moment we begin polling, as increasing the poll delayleads to a drop in throughput significant enough to not just be due tothe poll interval missing the ideal timing by a microsecond or two.According to downstream, the IP should take 1024 clock cycles togenerate 56 bits of random data, which at 150MHz should work out to6.8us. I did not test whether the data really does take 256/56*6.8usto arrive, though changing the readl to a __raw_readl makes nodifference in throughput, and this data does pass the rngtest FIPSchecks, so I'm not entirely sure what's going on but I presume it's gotsomething to do with the AHB bus speed and the memory barriers thatmainline's readl/writel functions insert.The only other current SoC that uses this new IP is the Rockchip RV1106,but that SoC does not have mainline support as of the time of writing,so we make no effort to declare it as supported for now.Co-developed-by: Lin Jinhan Signed-off-by: Lin Jinhan Signed-off-by: Nicolas Frattaroli Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

3371482c - hwrng: Kconfig - Move one "tristate" Kconfig description to the usual place

Wed, 15 Jan 2025 13:07:01 +0000

hwrng: Kconfig - Move one "tristate" Kconfig description to the usual placeIt's pretty usual to have "tristate" descriptions in Kconfig files placedimmediately after the actual configuration options, so correct the positionof one misplaced "tristate" spotted in the hw_random Kconfig file.No intended functional changes are introduced by this trivial cleanup.Signed-off-by: Dragan Simic Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

67b78a34 - hwrng: Kconfig - Use tabs as leading whitespace consistently in Kconfig

Wed, 15 Jan 2025 13:07:00 +0000

hwrng: Kconfig - Use tabs as leading whitespace consistently in KconfigReplace instances of leading size-eight groups of space characters withthe usual tab characters, as spotted in the hw_random Kconfig file.No intended functional changes are introduced by this trivial cleanup.Signed-off-by: Dragan Simic Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

5465951e - hwrng: amd - remove reference to removed PPC_MAPLE config

Wed, 06 Nov 2024 08:13:43 +0000

hwrng: amd - remove reference to removed PPC_MAPLE configCommit 62f8f307c80e ("powerpc/64: Remove maple platform") removes thePPC_MAPLE config as a consequence of the platform’s removal.The config definition of HW_RANDOM_AMD refers to this removed config optionin its dependencies.Remove the reference to the removed config option.Signed-off-by: Lukas Bulwahn Acked-by: Michael Ellerman (powerpc)Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

35b2237f - hwrng: bcm74110 - Add Broadcom BCM74110 RNG driver

Fri, 01 Nov 2024 21:13:15 +0000

hwrng: bcm74110 - Add Broadcom BCM74110 RNG driverAdd a driver for the random number generator present on the BroadcomBCM74110 SoC.Signed-off-by: Markus Mayer Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

e53ca8ef - hwrng: airoha - add support for Airoha EN7581 TRNG

Thu, 17 Oct 2024 12:44:38 +0000

hwrng: airoha - add support for Airoha EN7581 TRNGAdd support for Airoha TRNG. The Airoha SoC provide a True RNG modulethat can output 4 bytes of raw data at times.The module makes use of various noise source to provide True RandomNumber Generation.On probe the module is reset to operate Health Test and verify correctexecution of it.The module can also provide DRBG function but the execution mode ismutually exclusive, running as TRNG doesn't permit to also run it asDRBG.Signed-off-by: Christian Marangi Reviewed-by: Martin Kaiser Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

7bfdfd83 - hwrng: iproc-r200 - enable on BCMBCA

Tue, 17 Sep 2024 12:39:03 +0000

hwrng: iproc-r200 - enable on BCMBCAThe Broadcom Broadband Access (BCA) SoC:s include theiproc r200 hwrng so enable it to be selected for theseplatforms.Signed-off-by: Linus Walleij Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

dcf4fef6 - hwrng: rockchip - add hwrng driver for Rockchip RK3568 SoC

Tue, 30 Jul 2024 16:11:04 +0000

hwrng: rockchip - add hwrng driver for Rockchip RK3568 SoCRockchip SoCs used to have a random number generator as part of theircrypto device, and support for it has to be added to the correspondingdriver. However newer Rockchip SoCs like the RK3568 have an independentTrue Random Number Generator device. This patch adds a driver for it,greatly inspired from the downstream driver.The TRNG device does not seem to have a signal conditionner and the FIPS140-2 test returns a lot of failures. They can be reduced by increasingRK_RNG_SAMPLE_CNT, in a tradeoff between quality and speed. This valuehas been adjusted to get ~90% of successes and the quality value hasbeen set accordingly.Signed-off-by: Aurelien Jarno [daniel@makrotpia.org: code style fixes]Signed-off-by: Daniel Golle Acked-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

9d3a7ff2 - hwrng: cn10k - Enable by default CN10K driver if Thunder SoC is enabled

Mon, 29 Jul 2024 11:36:40 +0000

hwrng: cn10k - Enable by default CN10K driver if Thunder SoC is enabledBefore commit addea5858b66 ("hwrng: Kconfig - Do not enable by defaultCN10K driver") the Marvell CN10K Random Number Generator was alwaysenabled when HW_RANDOM was enabled.This was changed with that commit to prevent having this driver beingalways enabled on arm64. To prevent introducing regression with some olddefconfig enable the driver when ARCH_THUNDER is enabled.Fixes: addea5858b66 ("hwrng: Kconfig - Do not enable by default CN10K driver")Closes: https://lore.kernel.org/all/SN7PR18MB53144B37B82ADEEC5D35AE0CE3AC2@SN7PR18MB5314.namprd18.prod.outlook.com/Signed-off-by: Francesco Dolcini Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

addea585 - hwrng: Kconfig - Do not enable by default CN10K driver

Tue, 25 Jun 2024 19:57:46 +0000

hwrng: Kconfig - Do not enable by default CN10K driverDo not enable by default the CN10K HW random generator driver.CN10K Random Number Generator is available only on some specificMarvell SoCs, however the driver is in practice enabled by default onall arm64 configs.Signed-off-by: Francesco Dolcini Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

cf8e8658 - arch: Remove Itanium (IA-64) architecture

Thu, 20 Oct 2022 13:54:33 +0000

arch: Remove Itanium (IA-64) architectureThe Itanium architecture is obsolete, and an informal survey [0] revealsthat any residual use of Itanium hardware in production is mostly HP-UXor OpenVMS based. The use of Linux on Itanium appears to be limited toenthusiasts that occasionally boot a fresh Linux kernel to see whetherthings are still working as intended, and perhaps to churn out somedistro packages that are rarely used in practice.None of the original companies behind Itanium still produce or supportany hardware or software for the architecture, and it is listed as'Orphaned' in the MAINTAINERS file, as apparently, none of the engineersthat contributed on behalf of those companies (nor anyone else, for thatmatter) have been willing to support or maintain the architectureupstream or even be responsible for applying the odd fix. The Intelfirmware team removed all IA-64 support from the Tianocore/EDK2reference implementation of EFI in 2018. (Itanium is the originalarchitecture for which EFI was developed, and the way Linux supports itdeviates significantly from other architectures.) Some distros, such asDebian and Gentoo, still maintain [unofficial] ia64 ports, but many havedropped support years ago.While the argument is being made [1] that there is a 'for the commongood' angle to being able to build and run existing projects such as theGrid Community Toolkit [2] on Itanium for interoperability testing, thefact remains that none of those projects are known to be deployed onLinux/ia64, and very few people actually have access to such a system inthe first place. Even if there were ways imaginable in which Linux/ia64could be put to good use today, what matters is whether anyone isactually doing that, and this does not appear to be the case.There are no emulators widely available, and so boot testing Itanium isgenerally infeasible for ordinary contributors. GCC still supports IA-64but its compile farm [3] no longer has any IA-64 machines. GLIBC wouldlike to get rid of IA-64 [4] too because it would permit some overduecode cleanups. In summary, the benefits to the ecosystem of having IA-64be part of it are mostly theoretical, whereas the maintenance overheadof keeping it supported is real.So let's rip off the band aid, and remove the IA-64 arch code entirely.This follows the timeline proposed by the Debian/ia64 maintainer [5],which removes support in a controlled manner, leaving IA-64 in a knowngood state in the most recent LTS release. Other projects will followonce the kernel support is removed.[0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/[1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/[2] https://gridcf.org/gct-docs/latest/index.html[3] https://cfarm.tetaneutral.net/machines/list/[4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/[5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/Acked-by: Tony Luck Signed-off-by: Ard Biesheuvel List of files: /linux-6.15/drivers/char/hw_random/Kconfig

1ce1cd82 - hwrng: Enable COMPILE_TEST for more drivers

Fri, 28 Jul 2023 19:50:15 +0000

hwrng: Enable COMPILE_TEST for more driversThere's quite a few hwrng drivers which are easily enabled forCOMPILE_TEST, so let's enable them.The dependency on HW_RANDOM is redundant, so drop that while we're here.Signed-off-by: Rob Herring Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

d4211390 - hwrng: ingenic - enable compile testing

Mon, 10 Jul 2023 20:27:27 +0000

hwrng: ingenic - enable compile testingEnable compile testing for the ingenic-trng driver.Remove the dependency on HW_RANDOM. The ingenic-trng config section isunder "if HW_RANDOM".Signed-off-by: Martin Kaiser Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

b157d50b - hwrng: pic32 - enable compile-testing

Tue, 04 Jul 2023 17:32:00 +0000

hwrng: pic32 - enable compile-testingEnable compile testing for the pic32 driver.Remove the dependency on HW_RANDOM. The pic32 config section is under"if HW_RANDOM".Signed-off-by: Martin Kaiser Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

afa9d00e - hwrng: st - support compile-testing

Fri, 16 Jun 2023 08:58:12 +0000

hwrng: st - support compile-testingAllow compile-testing the st-rng driver if we're not running on an STchipset.Signed-off-by: Martin Kaiser Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

903e6ada - hwrng: histb - Move driver to drivers/char/hw_random/histb-rng.c

Fri, 21 Apr 2023 16:56:49 +0000

hwrng: histb - Move driver to drivers/char/hw_random/histb-rng.cMove to drivers/char/hw_random since histb-(t)rng does not providecryptography pseudo rng.histb-rng is pretty like hisi-rng, but after investigation, we confirmthere is no RNG_PHY_SEED register on histb-rng so a separate driver isneeded.Still we rename relevant function names to match those in hisi-rng.Link: https://lore.kernel.org/r/20230401164448.1393336-1-mmyangfl@gmail.comSigned-off-by: David Yang Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

e051910c - hwrng: Kconfig - Add HAS_IOMEM dependencies for exynos/meson/mtk/npcm

Wed, 19 Apr 2023 08:37:59 +0000

hwrng: Kconfig - Add HAS_IOMEM dependencies for exynos/meson/mtk/npcmAdd missing dependencies on HAS_IOMEM as otherwise they will triggerfailed builds with COMPILE_TEST enabled.Also add dependencies on OF where appropriate.Change the default so that these drivers are not enabled just becauseCOMPILE_TEST is turned on.Reported-by: kernel test robot Link: https://lore.kernel.org/oe-kbuild-all/202304191106.swKbBeDh-lkp@intel.com/Signed-off-by: Herbert Xu Acked-by: Łukasz Stelmach Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

c7410b42 - hwrng: starfive - Enable compile testing

Fri, 27 Jan 2023 11:03:21 +0000

hwrng: starfive - Enable compile testingEnable compile testing for jh7110. Also remove the dependency onHW_RANDOM.Signed-off-by: Herbert Xu Reviewed-by: Conor Dooley Reviewed-by: Jia Jie Ho Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig

c388f458 - hwrng: starfive - Add TRNG driver for StarFive SoC

Tue, 17 Jan 2023 01:54:44 +0000

hwrng: starfive - Add TRNG driver for StarFive SoCThis adds driver support for the hardware random number generator inStarfive SoCs and adds StarFive TRNG entry to MAINTAINERS.Co-developed-by: Jenny Zhang Signed-off-by: Jenny Zhang Signed-off-by: Jia Jie Ho Signed-off-by: Herbert Xu List of files: /linux-6.15/drivers/char/hw_random/Kconfig