Re: [PATCH 2/9] iommu/ipmmu-vmsa: Hook up R8A774E1 DT matching code

["Lad, Prabhakar" <prabhakar.csengg@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 2283 bytes --]

Hi Geert,

Thank you for the review.

On Tue, Jul 14, 2020 at 9:09 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Mon, Jul 13, 2020 at 11:35 PM Lad Prabhakar
> <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
> > From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
> >
> > Add support for RZ/G2H (R8A774E1) SoC IPMMUs.
> >
> > Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Thanks for your patch!
>
> > --- a/drivers/iommu/ipmmu-vmsa.c
> > +++ b/drivers/iommu/ipmmu-vmsa.c
> > @@ -751,6 +751,7 @@ static const struct soc_device_attribute soc_rcar_gen3[] = {
> >  static const struct soc_device_attribute soc_rcar_gen3_whitelist[] = {
> >         { .soc_id = "r8a774b1", },
> >         { .soc_id = "r8a774c0", },
> > +       { .soc_id = "r8a774e1", },
>
> Adding an entry to soc_rcar_gen3_whitelist[] doesn't do anything, unless
> you also add the same entry to soc_rcar_gen3[].
>
I think the comment "For R-Car Gen3 use a white list to opt-in slave
devices." is misleading.  Booting through the kernel I do see iommu
groups (attached is the logs). Also the recent patch to add
"r8a77961" just adds to soc_rcar_gen3_whitelist.

Cheers,
--Prabhakar

> >         { .soc_id = "r8a7795", .revision = "ES3.*" },
> >         { .soc_id = "r8a77961", },
> >         { .soc_id = "r8a77965", },
> > @@ -963,6 +964,9 @@ static const struct of_device_id ipmmu_of_ids[] = {
> >         }, {
> >                 .compatible = "renesas,ipmmu-r8a774c0",
> >                 .data = &ipmmu_features_rcar_gen3,
> > +       }, {
> > +               .compatible = "renesas,ipmmu-r8a774e1",
> > +               .data = &ipmmu_features_rcar_gen3,
> >         }, {
> >                 .compatible = "renesas,ipmmu-r8a7795",
> >                 .data = &ipmmu_features_rcar_gen3,
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

[-- Attachment #2: g2h_log.txt --]
[-- Type: text/plain, Size: 27847 bytes --]

[    0.000149] NOTICE:  BL2: RZ G2H Initial Program Loader(CA57)
[    0.004417] NOTICE:  BL2: Initial Program Loader(Rev.2.0.6)
[    0.009949] NOTICE:  BL2: PRR is RZG G2H Ver.3.0
[    0.014530] NOTICE:  BL2: Board is HiHope RZ/G2H Rev.4.0
[    0.019796] NOTICE:  BL2: Boot device is QSPI Flash(40MHz)
[    0.025236] NOTICE:  BL2: LCM state is CM
[    0.029203] NOTICE:  BL2: CH0: 0x400000000 - 0x47fffffff, 2 GiB
[    0.035071] NOTICE:  BL2: CH1: 0x500000000 - 0x57fffffff, 2 GiB
[    0.040957] NOTICE:  BL2: DDR3200(rev.0.40)
[    0.052413] NOTICE:  BL2: [COLD_BOOT]
[    0.058356] NOTICE:  BL2: DRAM Split is 2ch(DDR 3)
[    0.061655] NOTICE:  BL2: QoS is default setting(rev.0.07)
[    0.067098] NOTICE:  BL2: DRAM refresh interval 1.95 usec
[    0.072455] NOTICE:  BL2: Periodic Write DQ Training
[    0.077485] NOTICE:  BL2: Lossy Decomp areas
[    0.081614] NOTICE:       Entry 0: DCMPAREACRAx:0x80000540 DCMPAREACRBx:0x570
[    0.088698] NOTICE:       Entry 1: DCMPAREACRAx:0x40000000 DCMPAREACRBx:0x0
[    0.095611] NOTICE:       Entry 2: DCMPAREACRAx:0x20000000 DCMPAREACRBx:0x0
[    0.102525] NOTICE:  BL2: v1.5(release):af9f429-dirty
[    0.107534] NOTICE:  BL2: Built : 13:06:47, Jun 11 2020
[    0.112722] NOTICE:  BL2: Normal boot
[    0.116360] NOTICE:  BL2: dst=0xe6321100 src=0x8180000 len=512(0x200)
[    0.122850] NOTICE:  BL2: dst=0x43f00000 src=0x8180400 len=6144(0x1800)
[    0.130588] NOTICE:  BL2: dst=0x44000000 src=0x81c0000 len=65536(0x10000)
[    0.149490] NOTICE:  BL2: dst=0x50000000 src=0x8300000 len=1048576(0x100000)
[    0.369751] NOTICE:  BL2: Booting BL31


U-Boot 2018.09 (Jun 11 2020 - 13:06:59 +0000)

CPU: Renesas Electronics R8A774E1 rev 3.0
Model: Hoperun Technology HiHope RZ/G2H platform (hihope-rzg2h)
DRAM:  3.9 GiB
Bank #0: 0x048000000 - 0x0bfffffff, 1.9 GiB
Bank #1: 0x500000000 - 0x57fffffff, 2 GiB

Watchdog: Not found by seq!
WDT:   watchdog@e6020000
Watchdog: Started!
MMC:   sd@ee100000: 0, sd@ee160000: 1
Loading Environment from MMC... OK
In:    serial@e6e88000
Out:   serial@e6e88000
Err:   serial@e6e88000
Net:   eth0: ethernet@e6800000
Hit any key to stop autoboot:  0 
ethernet@e6800000 Waiting for PHY auto negotiation to complete... done
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
DHCP client bound to address 192.168.10.136 (1798 ms)
Using ethernet@e6800000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.136
Filename 'g2h/Image.gz'.
Load address: 0x4a080000
Loading: T #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #########
         971.7 KiB/s
done
Bytes transferred = 8705356 (84d54c hex)
Using ethernet@e6800000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.136
Filename 'g2h/r8a774e1-hihope-rzg2h-ex.dtb'.
Load address: 0x48000000
Loading: ##
         1.5 MiB/s
done
Bytes transferred = 22461 (57bd hex)
Uncompressed size: 20603392 = 0x13A6200
## Flattened Device Tree blob at 48000000
   Booting using the fdt blob at 0x48000000
   Using Device Tree in place at 0000000048000000, end 00000000480087bc

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x411fd073]
[    0.000000] Linux version 5.8.0-rc4-next-20200707-00032-g98ba4606caf0 (prasmi@prasmi) (aarch64-linux-gnu-gcc (Linaro GCC 7.5-2019.12) 7.5.0, GNU ld (Linaro_Binutils-2019.12) 2.28.2.20170706) #8 SMP PREEM0
[    0.000000] Machine model: HopeRun HiHope RZ/G2H with sub board
[    0.000000] efi: UEFI not found.
[    0.000000] cma: Reserved 32 MiB at 0x00000000be000000
[    0.000000] NUMA: No NUMA configuration found
[    0.000000] NUMA: Faking a node at [mem 0x0000000048000000-0x000000057fffffff]
[    0.000000] NUMA: NODE_DATA [mem 0x57f81e100-0x57f81ffff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000048000000-0x000000007fffffff]
[    0.000000]   DMA32    [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   Normal   [mem 0x0000000100000000-0x000000057fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000048000000-0x00000000bfffffff]
[    0.000000]   node   0: [mem 0x0000000500000000-0x000000057fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000048000000-0x000000057fffffff]
[    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 v1.1
[    0.000000] percpu: Embedded 22 pages/cpu s52952 r8192 d28968 u90112
[    0.000000] Detected PIPT I-cache on CPU0
[    0.000000] CPU features: detected: EL2 vector hardening
[    0.000000] Speculative Store Bypass Disable mitigation not required
[    0.000000] CPU features: detected: ARM errata 1165522, 1319367, or 1530923
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 999936
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: ip=dhcp rw rootwait root=/dev/nfs nfsroot=192.168.10.1:/mnt/g2h,vers=4.1,tcp
[    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] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] software IO TLB: mapped [mem 0x7bfff000-0x7ffff000] (64MB)
[    0.000000] Memory: 3863452K/4063232K available (11964K kernel code, 728K rwdata, 4936K rodata, 2432K init, 463K bss, 167012K reserved, 32768K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=8.
[    0.000000]  Trampoline variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
[    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[    0.000000] random: get_random_bytes called from start_kernel+0x314/0x4f0 with crng_init=0
[    0.000000] arch_timer: cp15 timer(s) running at 8.33MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1ec02923e, max_idle_ns: 440795202125 ns
[    0.000003] sched_clock: 56 bits at 8MHz, resolution 120ns, wraps every 2199023255496ns
[    0.000091] Console: colour dummy device 80x25
[    0.000276] printk: console [tty0] enabled
[    0.000337] Calibrating delay loop (skipped), value calculated using timer frequency.. 16.66 BogoMIPS (lpj=33333)
[    0.000352] pid_max: default: 32768 minimum: 301
[    0.000406] LSM: Security Framework initializing
[    0.000470] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.000501] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.001806] rcu: Hierarchical SRCU implementation.
[    0.002315] Detected Renesas RZ/G2 r8a774e1 ES3.0
[    0.002875] EFI services will not be available.
[    0.003171] smp: Bringing up secondary CPUs ...
[    0.003559] Detected PIPT I-cache on CPU1
[    0.003606] CPU1: Booted secondary processor 0x0000000001 [0x411fd073]
[    0.004035] Detected PIPT I-cache on CPU2
[    0.004060] CPU2: Booted secondary processor 0x0000000002 [0x411fd073]
[    0.004442] Detected PIPT I-cache on CPU3
[    0.004465] CPU3: Booted secondary processor 0x0000000003 [0x411fd073]
[    0.004845] CPU features: detected: ARM erratum 845719
[    0.004860] Detected VIPT I-cache on CPU4
[    0.004903] CPU4: Booted secondary processor 0x0000000100 [0x410fd034]
[    0.005342] Detected VIPT I-cache on CPU5
[    0.005368] CPU5: Booted secondary processor 0x0000000101 [0x410fd034]
[    0.005775] Detected VIPT I-cache on CPU6
[    0.005802] CPU6: Booted secondary processor 0x0000000102 [0x410fd034]
[    0.006205] Detected VIPT I-cache on CPU7
[    0.006231] CPU7: Booted secondary processor 0x0000000103 [0x410fd034]
[    0.006311] smp: Brought up 1 node, 8 CPUs
[    0.006366] SMP: Total of 8 processors activated.
[    0.006373] CPU features: detected: 32-bit EL0 Support
[    0.006380] CPU features: detected: CRC32 instructions
[    0.006386] CPU features: detected: 32-bit EL1 Support
[    0.017954] CPU: All CPU(s) started at EL1
[    0.017998] alternatives: patching kernel code
[    0.019238] devtmpfs: initialized
[    0.021384] KASLR disabled due to lack of seed
[    0.021670] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.021693] futex hash table entries: 2048 (order: 5, 131072 bytes, linear)
[    0.022345] pinctrl core: initialized pinctrl subsystem
[    0.022673] thermal_sys: Registered thermal governor 'step_wise'
[    0.022675] thermal_sys: Registered thermal governor 'power_allocator'
[    0.022857] DMI not present or invalid.
[    0.023211] NET: Registered protocol family 16
[    0.024013] DMA: preallocated 512 KiB GFP_KERNEL pool for atomic allocations
[    0.024132] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[    0.024281] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[    0.024316] audit: initializing netlink subsys (disabled)
[    0.024474] audit: type=2000 audit(0.024:1): state=initialized audit_enabled=0 res=1
[    0.024831] cpuidle: using governor menu
[    0.024954] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[    0.025059] ASID allocator initialised with 65536 entries
[    0.025422] Serial: AMBA PL011 UART driver
[    0.032964] sh-pfc e6060000.pin-controller: r8a774e1_pfc support registered
[    0.037453] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[    0.037465] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[    0.037473] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.037481] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
[    0.038355] cryptd: max_cpu_qlen set to 1000
[    0.039928] ACPI: Interpreter disabled.
[    0.042130] iommu: Default domain type: Translated 
[    0.042558] ipmmu-vmsa e67b0000.iommu: IPMMU context 0 is reserved
[    0.043630] vgaarb: loaded
[    0.043830] SCSI subsystem initialized
[    0.044076] usbcore: registered new interface driver usbfs
[    0.044101] usbcore: registered new interface driver hub
[    0.044152] usbcore: registered new device driver usb
[    0.044478] pps_core: LinuxPPS API ver. 1 registered
[    0.044486] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.044500] PTP clock support registered
[    0.044573] EDAC MC: Ver: 3.0.0
[    0.045067] FPGA manager framework
[    0.045116] Advanced Linux Sound Architecture Driver Initialized.
[    0.045642] clocksource: Switched to clocksource arch_sys_counter
[    0.045786] VFS: Disk quotas dquot_6.6.0
[    0.045830] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.045959] pnp: PnP ACPI: disabled
[    0.049234] NET: Registered protocol family 2
[    0.049495] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)
[    0.049537] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
[    0.049704] TCP bind hash table entries: 32768 (order: 7, 524288 bytes, linear)
[    0.050012] TCP: Hash tables configured (established 32768 bind 32768)
[    0.050133] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
[    0.050196] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
[    0.050347] NET: Registered protocol family 1
[    0.050668] RPC: Registered named UNIX socket transport module.
[    0.050678] RPC: Registered udp transport module.
[    0.050684] RPC: Registered tcp transport module.
[    0.050689] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.050701] PCI: CLS 0 bytes, default 64
[    0.051525] hw perfevents: enabled with armv8_cortex_a53 PMU driver, 7 counters available
[    0.051786] hw perfevents: enabled with armv8_cortex_a57 PMU driver, 7 counters available
[    0.052003] kvm [1]: HYP mode not available
[    0.054436] Initialise system trusted keyrings
[    0.054540] workingset: timestamp_bits=44 max_order=20 bucket_order=0
[    0.057567] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.057996] NFS: Registering the id_resolver key type
[    0.058019] Key type id_resolver registered
[    0.058025] Key type id_legacy registered
[    0.058037] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.058151] 9p: Installing v9fs 9p2000 file system support
[    0.084038] Key type asymmetric registered
[    0.084049] Asymmetric key parser 'x509' registered
[    0.084078] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246)
[    0.084089] io scheduler mq-deadline registered
[    0.084096] io scheduler kyber registered
[    0.085332] gpio_rcar e6050000.gpio: driving 16 GPIOs
[    0.085546] gpio_rcar e6051000.gpio: driving 29 GPIOs
[    0.085742] gpio_rcar e6052000.gpio: driving 15 GPIOs
[    0.085935] gpio_rcar e6053000.gpio: driving 16 GPIOs
[    0.086119] gpio_rcar e6054000.gpio: driving 18 GPIOs
[    0.086296] gpio_rcar e6055000.gpio: driving 26 GPIOs
[    0.086424] gpio-370 (usb1-reset): hogged as output/low
[    0.086516] gpio_rcar e6055400.gpio: driving 32 GPIOs
[    0.086689] gpio_rcar e6055800.gpio: driving 4 GPIOs
[    0.087581] EINJ: ACPI disabled.
[    0.090056] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.090869] SuperH (H)SCI(F) driver initialized
[    0.091211] e6e88000.serial: ttySC0 at MMIO 0xe6e88000 (irq = 106, base_baud = 0) is a scif
[    1.034137] printk: console [ttySC0] enabled
[    1.045040] loop: module loaded
[    1.048618] megasas: 07.714.04.00-rc1
[    1.053905] libphy: Fixed MDIO Bus: probed
[    1.058336] tun: Universal TUN/TAP device driver, 1.6
[    1.063693] thunder_xcv, ver 1.0
[    1.066945] thunder_bgx, ver 1.0
[    1.070191] nicpf, ver 1.0
[    1.073103] hclge is initializing
[    1.076451] hns3: Hisilicon Ethernet Network Driver for Hip08 Family - version
[    1.083680] hns3: Copyright (c) 2017 Huawei Corporation.
[    1.089021] e1000: Intel(R) PRO/1000 Network Driver
[    1.093902] e1000: Copyright (c) 1999-2006 Intel Corporation.
[    1.099674] e1000e: Intel(R) PRO/1000 Network Driver
[    1.104643] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    1.110590] igb: Intel(R) Gigabit Ethernet Network Driver
[    1.115995] igb: Copyright (c) 2007-2014 Intel Corporation.
[    1.121588] igbvf: Intel(R) Gigabit Virtual Function Network Driver
[    1.127857] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[    1.133843] sky2: driver version 1.30
[    1.138251] VFIO - User Level meta-driver version: 0.3
[    1.144176] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.150718] ehci-pci: EHCI PCI platform driver
[    1.155181] ehci-platform: EHCI generic platform driver
[    1.160474] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.166670] ohci-pci: OHCI PCI platform driver
[    1.171133] ohci-platform: OHCI generic platform driver
[    1.176582] usbcore: registered new interface driver usb-storage
[    1.183412] i2c /dev entries driver
[    1.187907] sdhci: Secure Digital Host Controller Interface driver
[    1.194093] sdhci: Copyright(c) Pierre Ossman
[    1.247614] renesas_sdhi_internal_dmac ee160000.sd: mmc0 base at 0x00000000ee160000, max clock rate 200 MHz
[    1.257440] Synopsys Designware Multimedia Card Interface Driver
[    1.263756] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.270199] ledtrig-cpu: registered to indicate activity on CPUs
[    1.276630] usbcore: registered new interface driver usbhid
[    1.282209] usbhid: USB HID core driver
[    1.287174] NET: Registered protocol family 17
[    1.291737] 9pnet: Installing 9P2000 support
[    1.296053] Key type dns_resolver registered
[    1.300538] registered taskstats version 1
[    1.304650] Loading compiled-in X.509 certificates
[    1.317235] renesas_irqc e61c0000.interrupt-controller: driving 6 irqs
[    1.325052] rcar-dmac e6700000.dma-controller: Adding to iommu group 0
[    1.331624] rcar-dmac e6700000.dma-controller: Using IPMMU context 1
[    1.340348] rcar-dmac e7300000.dma-controller: Adding to iommu group 1
[    1.346913] rcar-dmac e7300000.dma-controller: Using IPMMU context 2
[    1.355464] rcar-dmac e7310000.dma-controller: Reusing IPMMU context 2
[    1.362017] rcar-dmac e7310000.dma-controller: Adding to iommu group 1
[    1.368557] rcar-dmac e7310000.dma-controller: Reusing IPMMU context 2
[    1.377496] ravb e6800000.ethernet: Reusing IPMMU context 1
[    1.383092] ravb e6800000.ethernet: Adding to iommu group 0
[    1.385664] mmc0: new HS200 MMC card at address 0001
[    1.388672] ravb e6800000.ethernet: Reusing IPMMU context 1
[    1.394038] mmcblk0: mmc0:0001 S0J57X 29.6 GiB 
[    1.399713] libphy: ravb_mii: probed
[    1.403847] mmcblk0boot0: mmc0:0001 S0J57X partition 1 31.5 MiB
[    1.408276] ravb e6800000.ethernet eth0: Base address at 0xe6800000, ac:13:d0:20:87:a3, IRQ 103.
[    1.413355] mmcblk0boot1: mmc0:0001 S0J57X partition 2 31.5 MiB
[    1.428051] mmcblk0rpmb: mmc0:0001 S0J57X partition 3 4.00 MiB, chardev (241:0)
[    1.439223]  mmcblk0: p1
[    1.446421] Generic PHY e6800000.ethernet-ffffffff:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=e6800000.ethernet-ffffffff:00, irq=POLL)
[    5.534230] ravb e6800000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[    5.561659] Sending DHCP requests ., OK
[    5.581502] IP-Config: Got DHCP answer from 192.168.10.1, my address is 192.168.10.136
[    5.589424] IP-Config: Complete:
[    5.592656]      device=eth0, hwaddr=ac:13:d0:20:87:a3, ipaddr=192.168.10.136, mask=255.255.255.0, gw=192.168.10.1
[    5.603006]      host=192.168.10.136, domain=example.org, nis-domain=(none)
[    5.609967]      bootserver=192.168.10.1, rootserver=192.168.10.1, rootpath=
[    5.609970]      nameserver0=192.168.10.1
[    5.621410] ALSA device list:
[    5.624389]   No soundcards found.
[    5.670597] VFS: Mounted root (nfs4 filesystem) on device 0:20.
[    5.677301] devtmpfs: mounted
[    5.681559] Freeing unused kernel memory: 2432K
[    5.717706] Run /sbin/init as init process
[    5.734023] random: fast init done
[    5.952671] systemd[1]: System time before build time, advancing clock.
[    6.018870] systemd[1]: systemd 234 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 )
[    6.040280] systemd[1]: Detected architecture arm64.

Welcome to Poky (Yocto Project Reference Distro) 2.4.3 (rocko)!

[    6.067996] systemd[1]: Set hostname to <hihope-rzg2h>.
[    6.736771] random: systemd: uninitialized urandom read (16 bytes read)
[    6.743543] systemd[1]: Reached target Swap.
[  OK  ] Reached target Swap.
[    6.761770] random: systemd: uninitialized urandom read (16 bytes read)
[    6.769524] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[  OK  ] Listening on /dev/initctl Compatibility Named Pipe.
[    6.793776] random: systemd: uninitialized urandom read (16 bytes read)
[    6.800651] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Started Dispatch Password Requests to Console Directory Watch.
[    6.826830] systemd[1]: Listening on Journal Socket (/dev/log).
[  OK  ] Listening on Journal Socket (/dev/log).
[    6.847599] systemd[1]: Created slice System Slice.
[  OK  ] Created slice System Slice.
[    6.868955] systemd[1]: Mounting POSIX Message Queue File System...
         Mounting POSIX Message Queue File System...
[    6.896266] systemd[1]: Mounting Temporary Directory (/tmp)...
         Mounting Temporary Directory (/tmp)...
[  OK  ] Created slice system-serial\x2dgetty.slice.
[  OK  ] Listening on Journal Audit Socket.
[  OK  ] Reached target Host and Network Name Lookups.
         Mounting Kernel Debug File System...
[  OK  ] Listening on udev Kernel Socket.
[  OK  ] Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Reached target Paths.
[  OK  ] Listening on udev Control Socket.
[  OK  ] Listening on Network Service Netlink Socket.
[  OK  ] Reached target Remote File Systems.
[  OK  ] Listening on Journal Socket.
         Starting Load Kernel Modules...
         Starting Remount Root and Kernel File Systems...
         Starting Journal Service...
[  OK  ] Created slice User and Session Slice.
[  OK  ] Reached target Slices.
[  OK  ] Created slice system-getty.slice.
         Mounting Huge Pages File System...
[  OK  ] Mounted Kernel Debug File System.
[  OK  ] Mounted POSIX Message Queue File System.
[  OK  ] Mounted Huge Pages File System.
[  OK  ] Mounted Temporary Directory (/tmp).
[  OK  ] Started Journal Service.
[FAILED] Failed to start Load Kernel Modules.
See 'systemctl status systemd-modules-load.service' for details.
[  OK  ] Started Remount Root and Kernel File Systems.
         Starting udev Coldplug all Devices...
         Starting Create Static Device Nodes in /dev...
         Starting Apply Kernel Variables...
         Mounting Kernel Configuration File System...
         Starting Flush Journal to Persistent Storage...
[  OK  ] Mounted Kernel Configuration File System.
[  OK  ] Started Apply Kernel Variables.
[  OK  ] Started Create Static Device Nodes in /dev.
         Starting udev Kernel Device Manager...
[  OK  ] Reached target Local File Systems (Pre).
         Mounting /var/volatile...
[  OK  ] Mounted /var/volatile.
[    7.559899] systemd-journald[219]: Received request to flush runtime journal from PID 1
         Starting Load/Save Random Seed...
[  OK  ] Reached target Local File Systems.
[  OK  ] Started Flush Journal to Persistent Storage.
[  OK  ] Started udev Coldplug all Devices.
[  OK  ] Started Load/Save Random Seed.
[  OK  ] Started udev Kernel Device Manager.
         Starting Create Volatile Files and Directories...
[  OK  ] Started Create Volatile Files and Directories.
[    7.772100] random: crng init done
[    7.775513] random: 7 urandom warning(s) missed due to ratelimiting
[  OK  ] Found device /dev/ttySC0.
         Starting Update UTMP about System Boot/Shutdown...
[  OK  ] Started Update UTMP about System Boot/Shutdown.
[  OK  ] Reached target System Initialization.
[  OK  ] Listening on D-Bus System Message Bus Socket.
         Starting Network Service...
[  OK  ] Started dnf-automatic-install timer.
[  OK  ] Listening on RPCbind Server Activation Socket.
[  OK  ] Started dnf-automatic-download timer.
[  OK  ] Started dnf makecache timer.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Started dnf-automatic-notifyonly timer.
[  OK  ] Reached target Timers.
[  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[  OK  ] Listening on dropbear.socket.
[  OK  ] Reached target Sockets.
[  OK  ] Reached target Basic System.
[  OK  ] Reached target Containers.
[  OK  ] Started Bluetooth Audio ALSA Backend.
         Starting Telephony service...
         Starting pvrinit.service...
[  OK  ] Started VIN initializing setting.
         Starting Avahi mDNS/DNS-SD Stack...
         Starting PowerVR consumer services...
[  OK  ] Started optee services.
         Starting Login Service...
[  OK  ] Started D-Bus System Message Bus.
[  OK  ] Started Avahi mDNS/DNS-SD Stack.
[  OK  ] Started Telephony service.
         Starting Connection service...
[  OK  ] Started Network Service.
[  OK  ] Started pvrinit.service.
[  OK  ] Started PowerVR consumer services.
[  OK  ] Started Login Service.
[  OK  ] Started Connection service.
[  OK  ] Reached target Network.
         Starting Permit User Sessions...
         Starting Target Communication Framework agent...
[  OK  ] Started Permit User Sessions.
         Starting Hostname Service...
         Starting WPA supplicant...
[  OK  ] Started Serial Getty on ttySC0.
[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Started Target Communication Framework agent.
[  OK  ] Started Hostname Service.
[  OK  ] Started WPA supplicant.
[  OK  ] Reached target Multi-User System.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Weston Wayland compositor.
[  OK  ] Started Update UTMP about System Runlevel Changes.
[    9.434816] audit: type=1006 audit(1592389647.479:2): pid=340 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=1 res=1
[    9.447232] audit: type=1300 audit(1592389647.479:2): arch=c00000b7 syscall=64 success=yes exit=1 a0=8 a1=ffffd094e158 a2=1 a3=ffff90370640 items=0 ppid=1 pid=340 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0)
[    9.473536] audit: type=1327 audit(1592389647.479:2): proctitle="(systemd)"

Poky (Yocto Project Reference Distro) 2.4.3 hihope-rzg2h ttySC0

BSP: RZG2H/HIHOPE-RZG2H/1.0.4
LSI: RZG2H
Version: 1.0.4
hihope-rzg2h login: [   35.805671] USB20_VBUS0: disabling
[   35.809083] wlan-en-regulator: disabling
[   35.813017] SDHI0 VccQ: disabling

Poky (Yocto Project Reference Distro) 2.4.3 hihope-rzg2h ttySC0

BSP: RZG2H/HIHOPE-RZG2H/1.0.4
LSI: RZG2H
Version: 1.0.4
hihope-rzg2h login: root
Last login: Wed Jun 17 10:27:27 UTC 2020 on tty2
[  107.151160] audit: type=1006 audit(1592389745.195:3): pid=374 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=2 res=1
[  107.163572] audit: type=1300 audit(1592389745.195:3): arch=c00000b7 syscall=64 success=yes exit=1 a0=8 a1=ffffd094e158 a2=1 a3=ffff9049a6f0 items=0 ppid=1 pid=374 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0)
[  107.189918] audit: type=1327 audit(1592389745.195:3): proctitle="(systemd)"
amixer: Mixer attach default error: No such file or directory
amixer: Mixer attach default error: No such file or directory
ls: cannot access /dev/media*: No such file or directory
sed: -e expression #1, char 0: no previous regular expression
sed: -e expression #1, char 0: no previous regular expression
Extreme Low Power mode has already been disabled.
root@hihope-rzg2h:~# 
root@hihope-rzg2h:~# 
root@hihope-rzg2h:~# 
root@hihope-rzg2h:~# dmesg | grep -i iommu
[    0.042130] iommu: Default domain type: Translated 
[    0.042558] ipmmu-vmsa e67b0000.iommu: IPMMU context 0 is reserved
[    1.325052] rcar-dmac e6700000.dma-controller: Adding to iommu group 0
[    1.340348] rcar-dmac e7300000.dma-controller: Adding to iommu group 1
[    1.362017] rcar-dmac e7310000.dma-controller: Adding to iommu group 1
[    1.383092] ravb e6800000.ethernet: Adding to iommu group 0
root@hihope-rzg2h:~# 
root@hihope-rzg2h:~# dmesg | grep -i ipmmu
[    0.042558] ipmmu-vmsa e67b0000.iommu: IPMMU context 0 is reserved
[    1.331624] rcar-dmac e6700000.dma-controller: Using IPMMU context 1
[    1.346913] rcar-dmac e7300000.dma-controller: Using IPMMU context 2
[    1.355464] rcar-dmac e7310000.dma-controller: Reusing IPMMU context 2
[    1.368557] rcar-dmac e7310000.dma-controller: Reusing IPMMU context 2
[    1.377496] ravb e6800000.ethernet: Reusing IPMMU context 1
[    1.388672] ravb e6800000.ethernet: Reusing IPMMU context 1
root@hihope-rzg2h:~# 
root@hihope-rzg2h:~#