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2023-11-02rng: Add StarFive JH7110 RNG driverChanho Park
Adds to support JH7110 TRNG driver which is based on linux kernel's jh7110-trng.c. This can support to generate 256-bit random numbers and 128-bit but this makes 256-bit default for convenience. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
2023-11-02rng: Provide a RNG based on the RISC-V Zkr ISA extensionHeinrich Schuchardt
The Zkr ISA extension (ratified Nov 2021) introduced the seed CSR. It provides an interface to a physical entropy source. A RNG driver based on the seed CSR is provided. It depends on mseccfg.sseed being set in the SBI firmware. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
2023-10-13drivers: rng: add support for Meson S4Alexey Romanov
For some Amlogic SOC's, mechanism to obtain random number has been changed. For example, S4 now uses status bit waiting algo. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20231012075828.22685-2-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-11driver: rng: Add DM_RNG interface for ARMv8.5 RNDR registersAndre Przywara
The ARMv8.5 architecture extension defines architectural RNDR/RNDRRS system registers, that provide 64 bits worth of randomness on every read. Since it's an extension, and implementing it is optional, there is a field in the ID_AA64ISAR0_EL1 ID register to query the availability of those registers. Add a UCLASS_RNG driver that returns entropy via repeated reads from those system registers, if the extension is implemented. The driver always binds, but checks the availability in the probe() routine. This helps systems which suffer from low boot entropy, since U-Boot can provide entropy via the generic UEFI entropy gathering protocol to the OS, at an early stage. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-04rng: stm32: Implement custom RNG configuration supportGatien Chevallier
STM32 RNG configuration should best fit the requirements of the platform. Therefore, put a platform-specific RNG configuration field in the platform data. Default RNG configuration for STM32MP13 is the NIST certified configuration [1]. While there, fix and the RNG init sequence to support all RNG versions. [1] https://csrc.nist.gov/projects/cryptographic-module-validation-program/entropy-validations/certificate/53 Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-10-04rng: stm32: add error concealment sequenceGatien Chevallier
Seed errors can occur when using the hardware RNG. Implement the sequences to handle them. This avoids irrecoverable RNG state. Try to conceal seed errors when possible. If, despite the error concealing tries, a seed error is still present, then return an error. A clock error does not compromise the hardware block and data can still be read from RNG_DR. Just warn that the RNG clock is too slow and clear RNG_SR. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-10-04rng: stm32: add RNG clock frequency restraintGatien Chevallier
In order to ensure a good RNG quality and compatibility with certified RNG configuration, add RNG clock frequency restraint. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-10-04rng: stm32: Implement configurable RNG clock error detectionGatien Chevallier
RNG clock error detection is now enabled if the "clock-error-detect" property is set in the device tree. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-10-04rng: stm32: rename STM32 RNG driverGatien Chevallier
Rename the RNG driver as it is usable by other STM32 platforms than the STM32MP1x ones. Rename CONFIG_RNG_STM32MP1 to CONFIG_RNG_STM32 Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Reviewed-by: Grzegorz Szymaszek <gszymaszek@short.pl> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-04-21rockchip: rng: add trngv1 for rk3588Chris Morgan
This adds support for the TRNG found in the RK3588 SoC to the rockchip_rng driver so that it can be used for things such as seeding randomness to Linux. Changes in V3: - Moved notes from commit to cover letter. - Added Reviewed-By tag. Changes in V2: - Modified Kconfig to note that the Rockchip RNG driver supports all versions of the hardware (v1, v2, and the trng in the rk3588). Signed-off-by: Lin Jinhan <troy.lin@rock-chips.com> Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2022-09-14drivers: rng: optee_rng: register to CONFIG_OPTEE_SERVICE_DISCOVERYEtienne Carriere
Changes optee_rng driver to register itself has a OP-TEE service so that a device is bound for the driver when OP-TEE enumerates the PTA RNG service. Cc: Sughosh Ganu <sughosh.ganu@linaro.org> Cc: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2022-08-02tpm: rng: Add driver model interface for TPM RNG deviceSughosh Ganu
The TPM device has a builtin random number generator(RNG) functionality. Expose the RNG functions of the TPM device to the driver model so that they can be used by the EFI_RNG_PROTOCOL if the protocol is installed. Also change the function arguments and return type of the random number functions to comply with the driver model api. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-07-12rng: stm32mp1_rng: add conditional reset feature for STM32MP13xLionel Debieve
New IP adds a conditional reset that impact the clock error management. It is now linked to a new compatible. Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-23drivers: rng: add smccc trng driverEtienne Carriere
Adds random number generator driver using Arm SMCCC TRNG interface to get entropy bytes from secure monitor. The driver registers as an Arm SMCCC feature driver to allow PSCI driver to bind a device for when secure monitor exposes RNG support from Arm SMCCC TRNG interface. Cc: Sughosh Ganu <sughosh.ganu@linaro.org> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2022-06-10rng: nuvoton: Add NPCM7xx rng driverJim Liu
Add Nuvoton BMC NPCM750 rng driver. Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
2022-04-11rng: add OP-TEE based Random Number GeneratorPatrick Delaunay
Add driver for OP-TEE based Random Number Generator on ARM SoCs where hardware entropy sources are not accessible to normal world and the RNG service is provided by a HWRNG Trusted Application (TA). This driver is based on the linux driver: char/hw_random/optee-rng.c Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2022-02-25clk: Add clk_get_by_name_optionalSean Anderson
This adds a helper function for clk_get_by_name in cases where the clock is optional. Hopefully this helps point driver writers in the right direction. Also convert some existing users. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20220115205247.566210-2-seanga2@gmail.com
2021-08-31Kconfig: Remove all default n/no optionsMichal Simek
default n/no doesn't need to be specified. It is default option anyway. Signed-off-by: Michal Simek <michal.simek@xilinx.com> [trini: Rework FSP_USE_UPD portion] Signed-off-by: Tom Rini <trini@konsulko.com>
2021-07-06dm: define LOG_CATEGORY for all uclassPatrick Delaunay
Define LOG_CATEGORY for all uclass to allow filtering with log command. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02rng: iproc_rng200: Enable support for RPi4 armv7Matthias Brugger
On the RPi4 armv7 build we have the situationt that we use physical addresses of 64 bit, while the virtual addresses are 32 bit. Remap the base address in this scenario via map_physmem(). Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2021-02-24rng: iProc rng200: Rename ..._platdata variables to just ..._platPeter Robinson
In 8a8d24bd Simon dropped data from all the various _platdata calls but it seems this wasn't caught for the RNG200 driver from when it was posted to merged. This fixes that issue. Fixes: 537f0018 (rng: Add iProc RNG200 driver) Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
2021-02-18config: Enable iProc RNG200 driver in RPi4 configsMatthias Brugger
We find the iProc RNG200 in the Raspberry Pi 4. Add it to all it's config so that it can be used. Signed-off-by: Matthias Brugger <mbrugger@suse.com> Tested-by: Peter Robinson <pbrobinson@gmail.com> [mb: drop rpi_4_32b_defconfig] Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2021-02-16rng: Add iProc RNG200 driverMatthias Brugger
Add support for random number generator RNG200. This is for example found on RPi4. Signed-off-by: Matthias Brugger <mbrugger@suse.com> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Peter Robinson <pbrobinson@gmail.com> [mb: adapt to new struct driver memebers] Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2020-12-13dm: treewide: Rename ..._platdata variables to just ..._platSimon Glass
Try to maintain some consistency between these variables by using _plat as a suffix for them. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename ofdata_to_platdata() to of_to_plat()Simon Glass
This name is far too long. Rename it to remove the 'data' bits. This makes it consistent with the platdata->plat rename. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename dev_get_platdata() to dev_get_plat()Simon Glass
Rename this to be consistent with the change from 'platdata'. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename 'platdata' variables to just 'plat'Simon Glass
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename auto_alloc_size members to be shorterSimon Glass
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-10-22rng: Add Qualcomm MSM PRNG driverRobert Marko
Add support for the hardware pseudo random number generator found in Qualcomm SoC-s. Signed-off-by: Robert Marko <robert.marko@sartura.hr> Cc: Luka Perkov <luka.perkov@sartura.hr>
2020-09-28rng: meson: make core clock optionalNeil Armstrong
This fixes HWRNG support on Amlogic GXL, GXM, G12A, G12B & SM1 based boards dues to the lack of the core clock in the device tree. It was reported breaking EFI boot in the Linux EFI stub, because the EFI_RNG_PROTOCOL didn't check for the RNG device presence before installing itself. The Linux amlogic,meson-rng.yaml doesn't mandate the core clock, this the clock should be ignores if not present. Nevertheless, the clock should be present and this should be fixed on the Linux meson-gxl.dtsi & meson-g12-common.dtsi then synced with U-Boot. The change has been tested on a Khadas VIM3, which uses the common meson-g12-common.dtsi like the Odroid-C4 & Odroid-N2 in Scott's report, along with the RNG cmd. Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Reported-by: Scott K Logan <logans@cottsay.net> Fixes: bc40eb278b ("drivers/rng: add Amlogic hardware RNG driver") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Scott K Logan <logans@cottsay.net> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2020-09-18rng: stm32mp1: use log() instead of printf()Heinrich Schuchardt
The logging system provides flexible filtering and enhanced output. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-05-18common: Drop linux/bitops.h from common headerSimon Glass
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18common: Drop linux/delay.h from common headerSimon Glass
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18common: Drop log.h from common headerSimon Glass
Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18common: Drop net.h from common headerSimon Glass
Move this header out of the common header. Network support is used in quite a few places but it still does not warrant blanket inclusion. Note that this net.h header itself has quite a lot in it. It could be split into the driver-mode support, functions, structures, checksumming, etc. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-04-29rockchip: rng: Add a driver for random number generator(rng) deviceLin Jinhan
Add a driver for the rng device found on rockchip platforms. Support rng module of crypto v1 and crypto v2. Signed-off-by: Lin Jinhan <troy.lin@rock-chips.com> Tested-by: Peter Robinson <pbrobinson@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2020-03-11drivers/rng: add Amlogic hardware RNG driverHeinrich Schuchardt
Add support for the hardware random number generator of Amlogic SOCs. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-03-11drivers/rng: simplify KconfigHeinrich Schuchardt
For all sandbox systems with DM_RNG we enable RNG_SANDBOX. So we can simply set the default to yes. All rng drivers depend on DM_RNG. Use a single 'if' instead of individual dependencies. Now 'make menuconfig' shows the individual drivers neatly indented under the DM_RNG entry. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-03-02stm32mp1: rng: remove superfluous assignmentHeinrich Schuchardt
We should not assign a value that is overwritten before use. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-01-25lib: Kconfig dependencies for pseudo-random libraryHeinrich Schuchardt
drivers/rng/sandbox_rng.c requires rand() to be defined but configuration option CONFIG_CONFIG_LIB_RAND selected in drivers/rng/Kconfig does not exist. test/lib/test_aes.c requires rand() to be defined. Fix the selection criteria for choice "Pseudo-random library support type". Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07sandbox: rng: Add a random number generator(rng) driverSughosh Ganu
Add a sandbox driver for random number generation. Mostly aimed at providing a unit test for rng uclass. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-01-07stm32mp1: rng: Add a driver for random number generator(rng) deviceSughosh Ganu
Add a driver for the rng device found on stm32mp1 platforms. The driver provides a routine for reading the random number seed from the hardware device. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Patrick Delaunay <patrick.delaunay@st.com> Remove a superfluous blank line Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07dm: rng: Add random number generator(rng) uclassSughosh Ganu
Add a uclass for reading a random number seed from a random number generator device. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
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