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Message-ID: <271eedd7-d191-ada8-4e08-207b29784d39@pengutronix.de>
Date: Mon, 24 Jul 2023 19:21:43 +0200
From: Bastian Krause <bst@...gutronix.de>
To: Meenakshi Aggarwal <meenakshi.aggarwal@....com>,
Horia Geanta <horia.geanta@....com>,
Varun Sethi <V.Sethi@....com>,
Pankaj Gupta <pankaj.gupta@....com>,
Gaurav Jain <gaurav.jain@....com>,
"herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>,
"davem@...emloft.net" <davem@...emloft.net>,
"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc: Victoria Milhoan <vicki.milhoan@...escale.com>,
Dan Douglass <dan.douglass@....com>,
Vipul Kumar <vipul_kumar@...tor.com>,
"kernel@...gutronix.de" <kernel@...gutronix.de>
Subject: Re: [PATCH] crypto: caam - adjust RNG timing to support more devices
Hi Meenakshi,
On 7/19/23 09:00, Meenakshi Aggarwal wrote:
> We have tested the patch on i.mx8mm board and we did not face any issue with the patch.
>
> Please share your imx8mm board revision and complete logs (including bootloader logs),
> It will help in investigating the issue you are facing.
SoC: i.MX8MM revision 1.0
MSC OSM-MF-IMX8MINI [1] on MSC OSM-SM2F-AD-001 on a customer baseboard.
[1] https://embedded.avnet.com/product/msc-osm-mf-imx8mini/
These are the logs booting v6.5-rc3 via barebox 2023.07.1:
NOTICE: BL31: v2.8(release):v2.8-dirty
NOTICE: BL31: Built : 18:12:00, Nov 21 2022
barebox 2023.07.1-20230712-1 #1 Tue Jul 18 14:38:43 UTC 2023
Buildsystem version: 00ded5f
Board: MSC OSM-MF-IMX8MINI on MSC OSM-SM2F-AD-001 on customer baseboard
deep-probe: supported due to customer-imx8mm
detected i.MX8MM revision 1.0
i.MX8MM unique ID: 272b41aac2a4060c
rn5t568-i2c rn5t5680: Found NMD RN5T568 LSI 1, OTP: 6f
imx-esdhc 30b50000.mmc@...50000.of: registered as mmc1
imx-esdhc 30b60000.mmc@...60000.of: registered as mmc2
mdio_bus: miibus0: probed
malloc space: 0xbfdfd1c0 -> 0xffdfd1bf (size 1 GiB)
eth0: Got preset MAC address from device tree: 00:11:22:33:44:55
Hit m for menu or any to stop autoboot: 0
mmc1: detected SD card version 2.0
mmc1: registered mmc1
ext4 ext40: EXT2 rev 1, inode_size 256, descriptor size 64
ext4 ext40: EXT2 rev 1, inode_size 256, descriptor size 64
Booting entry 'Customer Image (/mnt/mmc1.0/loader/entries/imx8mm-customer.conf)'
blspec: booting Customer Image from mmc1
Adding "root=PARTUUID=076c4a2a-01" to Kernel commandline
Loading ARM aarch64 Linux image '/mnt/mmc1.0//boot/Image'
Loading devicetree from '/mnt/mmc1.0//boot/devicetree/imx8mm-customer.dtb'
commandline: root=PARTUUID=076c4a2a-01 console=ttymxc1,115200n8 6 rootwait
Loaded kernel to 0x40000000, devicetree at 0x0000000041590000
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[ 0.000000] Linux version 6.5.0-rc3 (oe-user@...host) (aarch64-oe-linux-gcc (GCC) 12.3.0, GNU ld (GNU Binutils) 2.40.0.20230620) #1 SMP PREEMPT Sun Jul 23 22:24:10 UTC 2023
[ 0.000000] Machine model: MSC OSM-MF-IMX8MINI on MSC OSM-SM2F-AD-001 on Customer baseboard
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000040000000-0x00000000ffffffff]
[ 0.000000] DMA32 empty
[ 0.000000] Normal [mem 0x0000000100000000-0x000000013fffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x000000013fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x000000013fffffff]
[ 0.000000] cma: Reserved 16 MiB at 0x00000000ff000000
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv1.1 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: MIGRATE_INFO_TYPE not supported.
[ 0.000000] psci: SMC Calling Convention v1.2
[ 0.000000] percpu: Embedded 29 pages/cpu s77992 r8192 d32600 u118784
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: detected: GIC system register CPU interface
[ 0.000000] alternatives: applying boot alternatives
[ 0.000000] Kernel command line: root=PARTUUID=076c4a2a-01 console=ttymxc1,115200n8 6 rootwait
[ 0.000000] Unknown kernel command line parameters "6", will be passed to user space.
[ 0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 1032192
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] software IO TLB: area num 4.
[ 0.000000] software IO TLB: mapped [mem 0x00000000fb000000-0x00000000ff000000] (64MB)
[ 0.000000] Memory: 4008812K/4194304K available (11200K kernel code, 1910K rwdata, 4088K rodata, 4352K init, 326K bss, 169108K reserved, 16384K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] ftrace: allocating 38151 entries in 150 pages
[ 0.000000] ftrace: allocated 150 pages with 4 groups
[ 0.000000] trace event string verifier disabled
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU event tracing is enabled.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] Rude variant of Tasks RCU enabled.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[ 0.000000] GICv3: 128 SPIs implemented
[ 0.000000] GICv3: 0 Extended SPIs implemented
[ 0.000000] Root IRQ handler: gic_handle_irq
[ 0.000000] GICv3: GICv3 features: 16 PPIs
[ 0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000038880000
[ 0.000000] ITS: No ITS available, not enabling LPIs
[ 0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 0.000000] arch_timer: cp15 timer(s) running at 8.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns
[ 0.000001] sched_clock: 56 bits at 8MHz, resolution 125ns, wraps every 2199023255500ns
[ 0.000533] Calibrating delay loop (skipped), value calculated using timer frequency.. 16.00 BogoMIPS (lpj=32000)
[ 0.000543] pid_max: default: 32768 minimum: 301
[ 0.003503] LSM: initializing lsm=capability
[ 0.004347] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.004370] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.008065] RCU Tasks: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1.
[ 0.008139] RCU Tasks Rude: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1.
[ 0.008225] RCU Tasks Trace: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1.
[ 0.008395] rcu: Hierarchical SRCU implementation.
[ 0.008399] rcu: Max phase no-delay instances is 1000.
[ 0.009412] smp: Bringing up secondary CPUs ...
[ 0.009912] Detected VIPT I-cache on CPU1
[ 0.009981] GICv3: CPU1: found redistributor 1 region 0:0x00000000388a0000
[ 0.010023] CPU1: Booted secondary processor 0x0000000001 [0x410fd034]
[ 0.010589] Detected VIPT I-cache on CPU2
[ 0.010637] GICv3: CPU2: found redistributor 2 region 0:0x00000000388c0000
[ 0.010664] CPU2: Booted secondary processor 0x0000000002 [0x410fd034]
[ 0.011147] Detected VIPT I-cache on CPU3
[ 0.011190] GICv3: CPU3: found redistributor 3 region 0:0x00000000388e0000
[ 0.011211] CPU3: Booted secondary processor 0x0000000003 [0x410fd034]
[ 0.011268] smp: Brought up 1 node, 4 CPUs
[ 0.011274] SMP: Total of 4 processors activated.
[ 0.011279] CPU features: detected: 32-bit EL0 Support
[ 0.011282] CPU features: detected: CRC32 instructions
[ 0.011330] CPU: All CPU(s) started at EL2
[ 0.011332] alternatives: applying system-wide alternatives
[ 0.013395] devtmpfs: initialized
[ 0.020093] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.020119] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.021492] pinctrl core: initialized pinctrl subsystem
[ 0.024561] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 0.025369] DMA: preallocated 512 KiB GFP_KERNEL pool for atomic allocations
[ 0.025472] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[ 0.025630] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[ 0.026034] thermal_sys: Registered thermal governor 'step_wise'
[ 0.026064] cpuidle: using governor menu
[ 0.026169] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.026241] ASID allocator initialised with 65536 entries
[ 0.030673] platform soc@0: Fixed dependency cycle(s) with /soc@...us@...00000/efuse@...50000/unique-id@4
[ 0.032280] platform 30330000.pinctrl: Fixed dependency cycle(s) with /soc@...us@...00000/pinctrl@...30000/hoggrp
[ 0.032900] imx8mm-pinctrl 30330000.pinctrl: initialized IMX pinctrl driver
[ 0.033610] platform 30350000.efuse: Fixed dependency cycle(s) with /soc@...us@...00000/clock-controller@...80000
[ 0.043065] Modules: 27248 pages in range for non-PLT usage
[ 0.043077] Modules: 518768 pages in range for PLT usage
[ 0.043889] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.043897] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page
[ 0.043902] HugeTLB: registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.043906] HugeTLB: 0 KiB vmemmap can be freed for a 32.0 MiB page
[ 0.043910] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.043915] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page
[ 0.043919] HugeTLB: registered 64.0 KiB page size, pre-allocated 0 pages
[ 0.043922] HugeTLB: 0 KiB vmemmap can be freed for a 64.0 KiB page
[ 0.044367] cryptd: max_cpu_qlen set to 1000
[ 0.047344] iommu: Default domain type: Translated
[ 0.047351] iommu: DMA domain TLB invalidation policy: strict mode
[ 0.047695] SCSI subsystem initialized
[ 0.047855] usbcore: registered new interface driver usbfs
[ 0.047882] usbcore: registered new interface driver hub
[ 0.047911] usbcore: registered new device driver usb
[ 0.048582] pps_core: LinuxPPS API ver. 1 registered
[ 0.048586] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@...ux.it>
[ 0.048600] PTP clock support registered
[ 0.049014] FPGA manager framework
[ 0.049909] clocksource: Switched to clocksource arch_sys_counter
[ 0.059522] NET: Registered PF_INET protocol family
[ 0.059758] IP idents hash table entries: 65536 (order: 7, 524288 bytes, linear)
[ 0.063403] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)
[ 0.063496] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[ 0.063512] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.063726] TCP bind hash table entries: 32768 (order: 8, 1048576 bytes, linear)
[ 0.064752] TCP: Hash tables configured (established 32768 bind 32768)
[ 0.064930] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.065021] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.065471] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 0.066080] RPC: Registered named UNIX socket transport module.
[ 0.066086] RPC: Registered udp transport module.
[ 0.066089] RPC: Registered tcp transport module.
[ 0.066091] RPC: Registered tcp-with-tls transport module.
[ 0.066094] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.066108] PCI: CLS 0 bytes, default 64
[ 0.067346] Initialise system trusted keyrings
[ 0.067490] workingset: timestamp_bits=46 max_order=20 bucket_order=0
[ 0.073825] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.074391] NFS: Registering the id_resolver key type
[ 0.074417] Key type id_resolver registered
[ 0.074421] Key type id_legacy registered
[ 0.074514] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.074524] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 0.106201] NET: Registered PF_ALG protocol family
[ 0.106212] Key type asymmetric registered
[ 0.106217] Asymmetric key parser 'x509' registered
[ 0.106222] Asymmetric key parser 'pkcs8' registered
[ 0.106274] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.106280] io scheduler mq-deadline registered
[ 0.106284] io scheduler kyber registered
[ 0.114502] imx-sdma 302c0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
[ 0.114524] imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware
[ 0.116312] imx-sdma 302b0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
[ 0.116323] imx-sdma 302b0000.dma-controller: external firmware not found, using ROM firmware
[ 0.118302] imx-sdma 30bd0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
[ 0.118313] imx-sdma 30bd0000.dma-controller: external firmware not found, using ROM firmware
[ 0.122348] SoC: i.MX8MM revision 1.0
[ 0.125491] 30860000.serial: ttymxc0 at MMIO 0x30860000 (irq = 18, base_baud = 1500000) is a IMX
[ 0.126259] 30890000.serial: ttymxc1 at MMIO 0x30890000 (irq = 19, base_baud = 1500000) is a IMX
[ 0.126300] printk: console [ttymxc1] enabled
[ 1.102185] loop: module loaded
[ 1.107963] usbcore: registered new interface driver usb-storage
[ 1.115875] input: 30370000.snvs:snvs-powerkey as /devices/platform/soc@...0000000.bus/30370000.snvs/30370000.snvs:snvs-powerkey/input/input0
[ 1.129313] snvs_rtc 30370000.snvs:snvs-rtc-lp: registered as rtc1
[ 1.135624] i2c_dev: i2c /dev entries driver
[ 1.141791] device-mapper: ioctl: 4.48.0-ioctl (2023-03-01) initialised: dm-devel@...hat.com
[ 1.151331] sdhci: Secure Digital Host Controller Interface driver
[ 1.157540] sdhci: Copyright(c) Pierre Ossman
[ 1.161905] sdhci-pltfm: SDHCI platform and OF driver helper
[ 1.169109] caam 30900000.crypto: Entropy delay = 3200
[ 1.174385] caam 30900000.crypto: Entropy delay = 3600
[ 1.179620] caam 30900000.crypto: Entropy delay = 4000
[ 1.184849] caam 30900000.crypto: Entropy delay = 4400
[ 1.190084] caam 30900000.crypto: Entropy delay = 4800
[ 1.195317] caam 30900000.crypto: Entropy delay = 5200
[ 1.200559] caam 30900000.crypto: Entropy delay = 5600
[ 1.201193] mmc2: SDHCI controller on 30b60000.mmc [30b60000.mmc] using ADMA
[ 1.205800] caam 30900000.crypto: Entropy delay = 6000
[ 1.218018] caam 30900000.crypto: Entropy delay = 6400
[ 1.223280] caam 30900000.crypto: Entropy delay = 6800
[ 1.228530] caam 30900000.crypto: Entropy delay = 7200
[ 1.233788] caam 30900000.crypto: Entropy delay = 7600
[ 1.239043] caam 30900000.crypto: Entropy delay = 8000
[ 1.244300] caam 30900000.crypto: Entropy delay = 8400
[ 1.249562] caam 30900000.crypto: Entropy delay = 8800
[ 1.254839] caam 30900000.crypto: Entropy delay = 9200
[ 1.260113] caam 30900000.crypto: Entropy delay = 9600
[ 1.265389] caam 30900000.crypto: Entropy delay = 10000
[ 1.270749] caam 30900000.crypto: Entropy delay = 10400
[ 1.276117] caam 30900000.crypto: Entropy delay = 10800
[ 1.281498] caam 30900000.crypto: Entropy delay = 11200
[ 1.286875] caam 30900000.crypto: Entropy delay = 11600
[ 1.292254] caam 30900000.crypto: Entropy delay = 12000
[ 1.297636] caam 30900000.crypto: Entropy delay = 12400
[ 1.303022] caam 30900000.crypto: failed to instantiate RNG
[ 1.308603] caam: probe of 30900000.crypto failed with error -11
[ 1.315519] usbcore: registered new interface driver usbhid
[ 1.321132] usbhid: USB HID core driver
[ 1.326846] hw perfevents: enabled with armv8_cortex_a53 PMU driver, 7 counters available
[ 1.336090] mmc2: new HS400 Enhanced strobe MMC card at address 0001
[ 1.338504] NET: Registered PF_INET6 protocol family
[ 1.343376] mmcblk2: mmc2:0001 IB2916 14.6 GiB
[ 1.348881] Segment Routing with IPv6
[ 1.353939] mmcblk2: p1
[ 1.355629] In-situ OAM (IOAM) with IPv6
[ 1.358931] mmcblk2boot0: mmc2:0001 IB2916 4.00 MiB
[ 1.362135] NET: Registered PF_PACKET protocol family
[ 1.368312] mmcblk2boot1: mmc2:0001 IB2916 4.00 MiB
[ 1.372035] 8021q: 802.1Q VLAN Support v1.8
[ 1.378226] mmcblk2rpmb: mmc2:0001 IB2916 4.00 MiB, chardev (245:0)
[ 1.381146] Key type dns_resolver registered
[ 1.397532] registered taskstats version 1
[ 1.402197] Loading compiled-in X.509 certificates
[ 1.429427] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 1.439918] gpio gpiochip1: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 1.450145] gpio gpiochip2: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 1.460417] gpio gpiochip3: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 1.470760] gpio gpiochip4: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 1.481645] usb_phy_generic usbphynop1: dummy supplies not allowed for exclusive requests
[ 1.490090] usb_phy_generic usbphynop2: dummy supplies not allowed for exclusive requests
[ 1.499490] i2c i2c-0: IMX I2C adapter registered
[ 1.504938] i2c i2c-1: IMX I2C adapter registered
[ 1.510651] at24 2-0050: supply vcc not found, using dummy regulator
[ 1.545479] i2c i2c-2: IMX I2C adapter registered
[ 1.551234] i2c i2c-3: IMX I2C adapter registered
[ 1.560291] pps pps0: new PPS source ptp0
[ 1.568244] fec 30be0000.ethernet eth0: registered PHC device 0
[ 1.575795] sdhci-esdhc-imx 30b50000.mmc: Got WP GPIO
[ 1.576803] clk: Disabling unused clocks
[ 1.612537] mmc1: SDHCI controller on 30b50000.mmc [30b50000.mmc] using ADMA
[ 1.643039] EXT4-fs (mmcblk2p1): orphan cleanup on readonly fs
[ 1.649085] EXT4-fs (mmcblk2p1): mounted filesystem c6b21368-2d43-4e41-b554-1b5ee3851e5c ro with ordered data mode. Quota mode: disabled.
[ 1.656832] mmc1: new high speed SDHC card at address 0001
[ 1.661547] VFS: Mounted root (ext4 filesystem) readonly on device 179:1.
[ 1.667859] mmcblk1: mmc1:0001 ASTC 29.1 GiB (ro)
[ 1.674414] devtmpfs: mounted
[ 1.681206] mmcblk1: p1
[ 1.684863] Freeing unused kernel memory: 4352K
[ 1.689502] Run /sbin/init as init process
[ 1.817750] systemd[1]: System time before build time, advancing clock.
[ 1.850220] systemd[1]: systemd 253.1^ running in system mode (-PAM -AUDIT -SELINUX -APPARMOR +IMA -SMACK -SECCOMP -GCRYPT -GNUTLS -OPENSSL -ACL +BLKID -CURL -ELFUTILS -FIDO2 -IDN2 -IDN -IPTC +KMOD -LIBCRYPTSETUP +LIBFDISK -PCRE2 -PWQUALITY -P11KIT -QRENCODE -TPM2 -BZIP2 -LZ4 -XZ -ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=hybrid)
[ 1.882000] systemd[1]: Detected architecture arm64.
Regards,
Bastian
>
>> -----Original Message-----
>> From: Bastian Krause <bst@...gutronix.de>
>> Sent: Tuesday, July 18, 2023 3:13 PM
>> To: Meenakshi Aggarwal <meenakshi.aggarwal@....com>; Horia Geanta
>> <horia.geanta@....com>; Varun Sethi <V.Sethi@....com>; Pankaj Gupta
>> <pankaj.gupta@....com>; Gaurav Jain <gaurav.jain@....com>;
>> herbert@...dor.apana.org.au; davem@...emloft.net; linux-
>> crypto@...r.kernel.org; linux-kernel@...r.kernel.org
>> Cc: Victoria Milhoan <vicki.milhoan@...escale.com>; Dan Douglass
>> <dan.douglass@....com>; Vipul Kumar <vipul_kumar@...tor.com>;
>> kernel@...gutronix.de
>> Subject: Re: [PATCH] crypto: caam - adjust RNG timing to support more devices
>>
>> On 7/17/23 14:43, Bastian Krause wrote:
>>> On 6/12/23 10:26, meenakshi.aggarwal@....com wrote:
>>>> From: Victoria Milhoan <vicki.milhoan@...escale.com>
>>>>
>>>> Adjust RNG timing parameters to support more i.MX6 devices.
>>>>
>>>> Signed-off-by: Victoria Milhoan <vicki.milhoan@...escale.com>
>>>> Signed-off-by: Dan Douglass <dan.douglass@....com>
>>>> Signed-off-by: Vipul Kumar <vipul_kumar@...tor.com>
>>>> Signed-off-by: Horia Geantă <horia.geanta@....com>
>>>> ---
>>>> drivers/crypto/caam/ctrl.c | 4 ++--
>>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> This patch seems to breaks CAAM RNG instantiation on an i.MX8MM at my end:
>>>
>>> caam 30900000.crypto: Entropy delay = 3200 caam 30900000.crypto:
>>> Entropy delay = 3600 [...] caam 30900000.crypto: Entropy delay = 12400
>>> caam 30900000.crypto: failed to instantiate RNG
>>> caam: probe of 30900000.crypto failed with error -11
>>>
>>> If I revert this patch or increase RTSDCTL_ENT_DLY_MAX to a value >
>>> 66800, it works again:
>>>
>>> caam 30900000.crypto: Entropy delay = 32800 caam 30900000.crypto:
>>> Entropy delay = 33200 [...] caam 30900000.crypto: Entropy delay =
>>> 66800 caam 30900000.crypto: Instantiated RNG4 SH0 caam
>>> 30900000.crypto: Instantiated RNG4 SH1 caam 30900000.crypto: device ID
>>> = 0x0a16040100000000 (Era 9) caam 30900000.crypto: job rings = 2, qi =
>>> 0 caam algorithms registered in /proc/crypto caam 30900000.crypto:
>>> caam pkc algorithms registered in /proc/crypto caam 30900000.crypto:
>>> registering rng-caam Executing RNG SELF-TEST with wait
>>> random: crng init done
>>> caam 30900000.crypto: rng crypto API alg registered prng-caam
>>
>> This ^ was the kernel log for..
>>
>>
>> --- a/drivers/crypto/caam/regs.h
>> +++ b/drivers/crypto/caam/regs.h
>> @@@ -522,7 -522,7 +522,7 @@@ struct rng4tst
>> #define RTSDCTL_ENT_DLY_SHIFT 16
>> #define RTSDCTL_ENT_DLY_MASK (0xffff << RTSDCTL_ENT_DLY_SHIFT)
>> #define RTSDCTL_ENT_DLY_MIN 3200
>> --#define RTSDCTL_ENT_DLY_MAX 12800
>> ++#define RTSDCTL_ENT_DLY_MAX 70000
>> #define RTSDCTL_SAMP_SIZE_MASK 0xffff
>> #define RTSDCTL_SAMP_SIZE_VAL 512
>> u32 rtsdctl; /* seed control register */
>>
>>
>> For completion's sake: Reverting this patch..
>>
>>
>> --- a/drivers/crypto/caam/ctrl.c
>> +++ b/drivers/crypto/caam/ctrl.c
>> @@ -383,7 +383,7 @@ static void kick_trng(struct device *dev, int ent_delay)
>> /* min. freq. count, equal to 1/4 of the entropy sample length */
>> wr_reg32(&r4tst->rtfrqmin, val >> 2);
>> /* max. freq. count, equal to 16 times the entropy sample length */
>> - wr_reg32(&r4tst->rtfrqmax, val << 4);
>> + wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
>> }
>>
>> wr_reg32(&r4tst->rtsdctl, (val << RTSDCTL_ENT_DLY_SHIFT) |
>>
>>
>> ..produces this kernel log (without RNG SELF-TEST):
>>
>> caam 30900000.crypto: Entropy delay = 3200 caam 30900000.crypto: Entropy
>> delay = 3600 caam 30900000.crypto: Instantiated RNG4 SH0 caam
>> 30900000.crypto: Instantiated RNG4 SH1 caam 30900000.crypto: device ID =
>> 0x0a16040100000000 (Era 9) caam 30900000.crypto: job rings = 2, qi = 0 caam
>> algorithms registered in /proc/crypto caam 30900000.crypto: caam pkc
>> algorithms registered in /proc/crypto caam 30900000.crypto: registering rng-
>> caam caam 30900000.crypto: rng crypto API alg registered prng-caam
>> random: crng init done
>>
>> Regards,
>> Bastian
>>
>>>>
>>>> diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
>>>> index 5fed3cf354c0..62dd069942e4 100644
>>>> --- a/drivers/crypto/caam/ctrl.c
>>>> +++ b/drivers/crypto/caam/ctrl.c
>>>> @@ -383,8 +383,8 @@ static void kick_trng(struct device *dev, int
>>>> ent_delay)
>>>> wr_reg32(&r4tst->rtsdctl, val);
>>>> /* min. freq. count, equal to 1/4 of the entropy sample length
>>>> */
>>>> wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2);
>>>> - /* disable maximum frequency count */
>>>> - wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
>>>> + /* max. freq. count, equal to 16 times the entropy sample length
>>>> +*/
>>>> + wr_reg32(&r4tst->rtfrqmax, ent_delay << 4);
>>>> /* read the control register */
>>>> val = rd_reg32(&r4tst->rtmctl);
>>>> start_rng:
>>>
>>
>> --
>> Pengutronix e.K. | |
>> Steuerwalder Str. 21 |
>> http://www.pen/
>> gutronix.de%2F&data=05%7C01%7Cmeenakshi.aggarwal%40nxp.com%7C1f556
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>> 0%7C0%7C638252701909887583%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
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>> %7C%7C&sdata=2vCBBdo%2FAkyz%2BaLXcDyeursw3Gle%2FKosiO%2FdPysOd3
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>> 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
>> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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