linux-dev/drivers/char/hw_random/Kconfig, branch master

hwrng: bcm2835: bcmbca: Replace ARCH_BCM_63XX with ARCH_BCMBCA

2022-07-11T02:11:00Z

Prepare for the BCM63138 ARCH_BCM_63XX migration to ARCH_BCMBCA. Make HW_RANDOM_BCM2835 depending on ARCH_BCMBCA. Signed-off-by: William Zhang Acked-by: Florian Fainelli Signed-off-by: Florian Fainelli

hwrng: cn10k - Enable compile testing

2022-05-06T10:16:55Z

This patch enables COMPILE_TEST for cn10k. Signed-off-by: Herbert Xu

Revert "hwrng: mpfs - Enable COMPILE_TEST"

2022-04-26T09:42:36Z

This reverts commit 6a71277ce91e4766ebe9a5f6725089c80d043ba2. The underlying option POLARFIRE_SOC_SYS_CTRL already supports COMPILE_TEST so there is no need for this. What's more, if we force this option on without the underlying option it fails to build. Reported-by: kernel test robot Reported-by: Randy Dunlap Signed-off-by: Herbert Xu

hwrng: mpfs - Enable COMPILE_TEST

2022-04-21T09:53:55Z

The dependency on HW_RANDOM is redundant so this patch removes it. As this driver seems to cross-compile just fine we could also enable COMPILE_TEST. Signed-off-by: Herbert Xu Reviewed-by: Conor Dooley Signed-off-by: Herbert Xu

hwrng: mpfs - add polarfire soc hwrng support

2022-04-15T08:34:28Z

Add a driver to access the hardware random number generator on the Polarfire SoC. The hwrng can only be accessed via the system controller, so use the mailbox interface the system controller exposes to access the hwrng. Signed-off-by: Conor Dooley Signed-off-by: Herbert Xu

hwrng: cavium - HW_RANDOM_CAVIUM should depend on ARCH_THUNDER

2022-01-31T00:21:37Z

The Cavium ThunderX Random Number Generator is only present on Cavium ThunderX SoCs, and not available as an independent PCIe endpoint. Hence add a dependency on ARCH_THUNDER, to prevent asking the user about this driver when configuring a kernel without Cavium Thunder SoC support. Fixes: cc2f1908c6b8f625 ("hwrng: cavium - Add Cavium HWRNG driver for ThunderX SoC.") Signed-off-by: Geert Uytterhoeven Signed-off-by: Herbert Xu

Merge tag 'mips_5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2022-01-14T14:08:36Z

Pull MIPS updates from Thomas Bogendoerfer: - add support for more BCM47XX based devices - add MIPS support for brcmstb PCIe controller - add Loongson 2K1000 reset driver - remove board support for rbtx4938/rbtx4939 - remove support for TX4939 SoCs - fixes and cleanups * tag 'mips_5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (59 commits) MIPS: ath79: drop _machine_restart again PCI: brcmstb: Augment driver for MIPs SOCs MIPS: bmips: Remove obsolete DMA mapping support MIPS: bmips: Add support PCIe controller device nodes dt-bindings: PCI: Add compatible string for Brcmstb 74[23]5 MIPs SOCs MIPS: compressed: Fix build with ZSTD compression MIPS: BCM47XX: Add support for Netgear WN2500RP v1 & v2 MIPS: BCM47XX: Add support for Netgear R6300 v1 MIPS: BCM47XX: Add LEDs and buttons for Asus RTN-10U MIPS: BCM47XX: Add board entry for Linksys WRT320N v1 MIPS: BCM47XX: Define Linksys WRT310N V2 buttons MIPS: Remove duplicated include in local.h MIPS: retire "asm/llsc.h" MIPS: rework local_t operation on MIPS64 MIPS: fix local_{add,sub}_return on MIPS64 mips/pci: remove redundant ret variable MIPS: Loongson64: Add missing of_node_put() in ls2k_reset_init() MIPS: new Kconfig option ZBOOT_LOAD_ADDRESS MIPS: enable both vmlinux.gz.itb and vmlinuz for generic MIPS: signal: Return immediately if call fails ...

MIPS: TXX9: Remove TX4939 SoC support

2022-01-02T13:12:03Z

After removal of RBTX4939 board support remove code for the TX4939 SoC. Signed-off-by: Thomas Bogendoerfer Tested-by: Geert Uytterhoeven

hwrng: cn10k - Add random number generator support

2021-12-24T03:18:22Z

CN10K series of silicons support true random number generators. This patch adds support for the same. Also supports entropy health status checking. Signed-off-by: Sunil Goutham Signed-off-by: Bharat Bhushan Signed-off-by: Joseph Longever Signed-off-by: Herbert Xu

hwrng: cavium - Check health status while reading random data

2021-11-20T04:02:07Z

This RNG device is present on Marvell OcteonTx2 silicons as well and also provides entropy health status. HW continuously checks health condition of entropy and reports faults. Fault is in terms of co-processor cycles since last fault detected. This doesn't get cleared and only updated when new fault is detected. Also there are chances of detecting false positives. So to detect a entropy failure SW has to check if failures are persistent ie cycles elapsed is frequently updated by HW. This patch adds support to detect health failures using below algo. 1. Consider any fault detected before 10ms as a false positive and ignore. 10ms is chosen randomly, no significance. 2. Upon first failure detection make a note of cycles elapsed and when this error happened in realtime (cntvct). 3. Upon subsequent failure, check if this is new or a old one by comparing current cycles with the ones since last failure. cycles or time since last failure is calculated using cycles and time info captured at (2). HEALTH_CHECK status register is not available to VF, hence had to map PF registers. Also since cycles are in terms of co-processor cycles, had to retrieve co-processor clock rate from RST device. Signed-off-by: Sunil Goutham Signed-off-by: Herbert Xu