SK-AM62A-LP: Quiet kernel bootarg in Falcon Mode

Derek T

Part Number: SK-AM62A-LP

Hello,

I'm working on reducing boot time for an AM62A design based on the tisdk-tiny-sdk, booting from an SD card. I am working in Yocto, using an SPL boot flow. Adding:

DISTROOVERRIDES:append = ":ti-falcon"

to local.conf reduces the boot time by ~5sec. Suppressing kernel prints during boot with:

--- a/board/ti/am62ax/am62ax.env
+++ b/board/ti/am62ax/am62ax.env
@@ -11,7 +11,7 @@ rproc_fw_binaries= 0 /lib/firmware/am62-mcu-m4f0_0-fw
 
 name_kern=Image
 console=ttyS2,115200n8
-args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02800000
+args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02800000 loglevel=1
 	${mtdparts}
 run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}

also reduces boot time by about 5sec, but does not work while in Falcon mode. I understand that U-boot is skipped in Falcon mode, so this is not a surprise, but adding bootargs to the dts does not work in either a standard boot flow or Falcon mode.

--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -33,6 +33,7 @@
 
 	chosen {
 		stdout-path = "serial2:115200n8";
+    	bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 loglevel=1";
 	};
 
 	memory@80000000 {

I also tried adding:

CONFIG_CMDLINE="console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 quiet"

to the kernel defconfig, with no luck.

Can you please advise on how I can suppress kernel prints during boot while in Falcon mode?

8 months ago

0 Bin Liu 8 months ago

TI__Guru**** 182366 points

Hi Derek,

I think I saw a similar question on this forums a few months ago, but I don't remember the solution now. Let me see if I can find out that e2e thread.

0 Derek T 8 months ago

Prodigy 126 points

Thanks Bin, looking forward to your response. I'll post if I can find it in the meantime.

0 Bin Liu 8 months ago in reply to Derek T

TI__Guru**** 182366 points

Hi Derek,

The mentioned e2e thread has no closure. The customer didn't follow up.

Derek T said:
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts @@ -33,6 +33,7 @@ chosen { stdout-path = "serial2:115200n8"; + bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 loglevel=1";

Adding the parameter in bootargs in kernel device tree should be the solution.

Please attach the full kernel boot log.

Please check the devicetreee setting in Linux to see if the bootargs parameter is populated.

/sys/firmware/devicetree/... (I forgot the exact path here).

0 Derek T 8 months ago in reply to Bin Liu

Prodigy 126 points

Hi Bin,

I attached the log here. This is with that dts patch in the build, and the bottom of my local.conf has these changes (I started experimenting with Busybox in parallel to Falcon Mode/suppressing kernel serial output, I don't believe it's related):

DISTROOVERRIDES:append = ":ti-falcon"

DISTRO_FEATURES:remove = "systemd"

DISTRO_FEATURES:append = "mdev"

DISTRO_FEATURES:append = "busybox"

INIT_MANAGER = "mdev-busybox"

Looks like the relevant line is, though I'm not sure where it's coming from. Previously, the u-boot .env file was overriding my dts change:
[ 0.000000] Kernel command line: console=ttyS2,115200n8 root=PARTUUID=076c4a2a-02 rootwait

cat /sys/firmware/devicetree/base/chosen/bootargs yields the same thing
console=ttyS2,115200n8 root=PARTUUID=076c4a2a-02 rootwaitroot

Fullscreen boot_log_feb_10.txt Download

U-Boot SPL 2025.01-00547-g3bcfad6cee95-dirty (Jul 23 2025 - 16:49:22 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.1.5--v11.01.05 (Fancy Rat)')
SPL initial stack usage: 13568 bytes
Trying to boot from MMC2
Authentication passed
Loading falcon payload from MMC2
Authentication passed
Authentication passed
Loading Environment from nowhere... OK
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.13.0(release):v2.13.0-259-ge0c4d3903b-dirty
NOTICE:  BL31: Built : 07:01:36, Jul  1 2025
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 6.12.35-ti-00946-g72f48d59b8f0-dirty (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.4.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Tue Jul 22 20:20:40 UTC 2025
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Texas Instruments AM62A7 SK
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at 0x00000000c0000000, size 576 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000c0000000..0x00000000e3ffffff (589824 KiB) map reusable linux,cma
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000099800000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@99800000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x0000000099800000..0x00000000998fffff (1024 KiB) nomap non-reusable c7x-dma-memory@99800000
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000099900000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@99900000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x0000000099900000..0x000000009a7fffff (15360 KiB) nomap non-reusable c7x-memory@99900000
[    0.000000] Reserved memory: created DMA memory pool at 0x000000009b800000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@9b800000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x000000009b800000..0x000000009b8fffff (1024 KiB) nomap non-reusable r5f-dma-memory@9b800000
[    0.000000] Reserved memory: created DMA memory pool at 0x000000009b900000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@9b900000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x000000009b900000..0x000000009c7fffff (15360 KiB) nomap non-reusable r5f-dma-memory@9b900000
[    0.000000] Reserved memory: created DMA memory pool at 0x000000009c800000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@9c800000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x000000009c800000..0x000000009c8fffff (1024 KiB) nomap non-reusable r5f-dma-memory@9c800000
[    0.000000] Reserved memory: created DMA memory pool at 0x000000009c900000, size 30 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@9c900000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x000000009c900000..0x000000009e6fffff (30720 KiB) nomap non-reusable r5f-dma-memory@9c900000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 16 MiB
[    0.000000] OF: reserved mem: initialized node ipc-memories@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a0ffffff (16384 KiB) nomap non-reusable ipc-memories@a0000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000008ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x000000008007ffff]
[    0.000000]   node   0: [mem 0x0000000080080000-0x00000000997fffff]
[    0.000000]   node   0: [mem 0x0000000099800000-0x000000009a7fffff]
[    0.000000]   node   0: [mem 0x000000009a800000-0x000000009b7fffff]
[    0.000000]   node   0: [mem 0x000000009b800000-0x000000009e6fffff]
[    0.000000]   node   0: [mem 0x000000009e700000-0x000000009e7fffff]
[    0.000000]   node   0: [mem 0x000000009e800000-0x00000000a0ffffff]
[    0.000000]   node   0: [mem 0x00000000a1000000-0x00000000ffffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000008ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000008ffffffff]
[    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: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.5
[    0.000000] percpu: Embedded 22 pages/cpu s51672 r8192 d30248 u90112
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: console=ttyS2,115200n8 root=PARTUUID=076c4a2a-02 rootwait
[    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: 1048576
[    0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[    0.000000] software IO TLB: area num 4.
[    0.000000] software IO TLB: mapped [mem 0x00000000fbfff000-0x00000000fffff000] (64MB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, 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=512 to nr_cpu_ids=4.
[    0.000000]  Trampoline 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] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.000000] RCU Tasks: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=4.
[    0.000000] RCU Tasks Trace: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=4.
[    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[    0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[    0.000000] GICv3: 256 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: GICD_CTRL.DS=0, SCR_EL3.FIQ=1
[    0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000001880000
[    0.000000] ITS [mem 0x01820000-0x0182ffff]
[    0.000000] GIC: enabling workaround for ITS: Socionext Synquacer pre-ITS
[    0.000000] ITS@0x0000000001820000: Devices Table too large, reduce ids 20->19
[    0.000000] ITS@0x0000000001820000: allocated 524288 Devices @880800000 (flat, esz 8, psz 64K, shr 0)
[    0.000000] ITS: using cache flushing for cmd queue
[    0.000000] GICv3: using LPI property table @0x0000000880050000
[    0.000000] GIC: using cache flushing for LPI property table
[    0.000000] GICv3: CPU0: using allocated LPI pending table @0x0000000880060000
[    0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    0.000000] arch_timer: cp15 timer(s) running at 200.00MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0x3ffffffffffffff max_cycles: 0x2e2049d3e8, max_idle_ns: 440795210634 ns
[    0.000000] sched_clock: 58 bits at 200MHz, resolution 5ns, wraps every 4398046511102ns
[    0.000440] Console: colour dummy device 80x25
[    0.000494] Calibrating delay loop (skipped), value calculated using timer frequency.. 400.00 BogoMIPS (lpj=800000)
[    0.000505] pid_max: default: 32768 minimum: 301
[    0.000593] LSM: initializing lsm=capability,selinux
[    0.000643] SELinux:  Initializing.
[    0.001069] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.001087] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.003267] rcu: Hierarchical SRCU implementation.
[    0.003275] rcu:     Max phase no-delay instances is 1000.
[    0.003457] Timer migration: 1 hierarchy levels; 8 children per group; 1 crossnode level
[    0.003866] EFI services will not be available.
[    0.004147] smp: Bringing up secondary CPUs ...
[    0.004776] Detected VIPT I-cache on CPU1
[    0.004849] GICv3: CPU1: found redistributor 1 region 0:0x00000000018a0000
[    0.004865] GICv3: CPU1: using allocated LPI pending table @0x0000000880070000
[    0.004908] CPU1: Booted secondary processor 0x0000000001 [0x410fd034]
[    0.005627] Detected VIPT I-cache on CPU2
[    0.005683] GICv3: CPU2: found redistributor 2 region 0:0x00000000018c0000
[    0.005697] GICv3: CPU2: using allocated LPI pending table @0x0000000880080000
[    0.005729] CPU2: Booted secondary processor 0x0000000002 [0x410fd034]
[    0.006364] Detected VIPT I-cache on CPU3
[    0.006415] GICv3: CPU3: found redistributor 3 region 0:0x00000000018e0000
[    0.006429] GICv3: CPU3: using allocated LPI pending table @0x0000000880090000
[    0.006459] CPU3: Booted secondary processor 0x0000000003 [0x410fd034]
[    0.006579] smp: Brought up 1 node, 4 CPUs
[    0.006585] SMP: Total of 4 processors activated.
[    0.006588] CPU: All CPU(s) started at EL2
[    0.006592] CPU features: detected: 32-bit EL0 Support
[    0.006596] CPU features: detected: CRC32 instructions
[    0.006634] alternatives: applying system-wide alternatives
[    0.007228] Memory: 3320272K/4194304K available (12992K kernel code, 1256K rwdata, 4668K rodata, 2752K init, 642K bss, 275220K reserved, 589824K cma-reserved)
[    0.008242] devtmpfs: initialized
[    0.017255] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.017276] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.033373] 27136 pages in range for non-PLT usage
[    0.033387] 518656 pages in range for PLT usage
[    0.033633] pinctrl core: initialized pinctrl subsystem
[    0.034188] DMI not present or invalid.
[    0.036469] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.037257] DMA: preallocated 512 KiB GFP_KERNEL pool for atomic allocations
[    0.037374] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[    0.037536] DMA: preallocated 512 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[    0.037594] audit: initializing netlink subsys (disabled)
[    0.037797] audit: type=2000 audit(0.036:1): state=initialized audit_enabled=0 res=1
[    0.038215] thermal_sys: Registered thermal governor 'step_wise'
[    0.038219] thermal_sys: Registered thermal governor 'power_allocator'
[    0.038262] cpuidle: using governor menu
[    0.038407] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[    0.038501] ASID allocator initialised with 65536 entries
[    0.044400] /bus@f0000/interrupt-controller@1800000: Fixed dependency cycle(s) with /bus@f0000/interrupt-controller@1800000
[    0.044505] /bus@f0000/i2c@20000000/usb-power-controller@3f/connector: Fixed dependency cycle(s) with /bus@f0000/dwc3-usb@f900000/usb@31000000
[    0.044550] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /bus@f0000/dss@30200000
[    0.044606] /bus@f0000/dwc3-usb@f900000/usb@31000000: Fixed dependency cycle(s) with /bus@f0000/i2c@20000000/usb-power-controller@3f/connector
[    0.044699] /bus@f0000/dss@30200000: Fixed dependency cycle(s) with /bus@f0000/i2c@20010000/bridge-hdmi@3b
[    0.050275] /bus@f0000/i2c@20000000/usb-power-controller@3f/connector: Fixed dependency cycle(s) with /bus@f0000/dwc3-usb@f900000/usb@31000000
[    0.050481] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /bus@f0000/dss@30200000
[    0.051356] /bus@f0000/dwc3-usb@f900000/usb@31000000: Fixed dependency cycle(s) with /bus@f0000/i2c@20000000/usb-power-controller@3f/connector
[    0.053222] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /bus@f0000/dss@30200000
[    0.053291] /bus@f0000/dss@30200000: Fixed dependency cycle(s) with /bus@f0000/i2c@20010000/bridge-hdmi@3b
[    0.055150] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /connector-hdmi
[    0.055225] /connector-hdmi: Fixed dependency cycle(s) with /bus@f0000/i2c@20010000/bridge-hdmi@3b
[    0.056081] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[    0.056090] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page
[    0.056095] HugeTLB: registered 32.0 MiB page size, pre-allocated 0 pages
[    0.056099] HugeTLB: 0 KiB vmemmap can be freed for a 32.0 MiB page
[    0.056104] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[    0.056107] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page
[    0.056111] HugeTLB: registered 64.0 KiB page size, pre-allocated 0 pages
[    0.056114] HugeTLB: 0 KiB vmemmap can be freed for a 64.0 KiB page
[    0.057767] k3-chipinfo 43000014.chipid: Family:AM62AX rev:SR1.0 JTAGID[0x0bb8d02f] Detected
[    0.058385] iommu: Default domain type: Translated
[    0.058393] iommu: DMA domain TLB invalidation policy: strict mode
[    0.059013] SCSI subsystem initialized
[    0.059348] usbcore: registered new interface driver usbfs
[    0.059379] usbcore: registered new interface driver hub
[    0.059405] usbcore: registered new device driver usb
[    0.059875] pps_core: LinuxPPS API ver. 1 registered
[    0.059880] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.059893] PTP clock support registered
[    0.059925] EDAC MC: Ver: 3.0.0
[    0.060222] scmi_core: SCMI protocol bus registered
[    0.060544] FPGA manager framework
[    0.060633] Advanced Linux Sound Architecture Driver Initialized.
[    0.061577] vgaarb: loaded
[    0.061912] clocksource: Switched to clocksource arch_sys_counter
[    0.062142] VFS: Disk quotas dquot_6.6.0
[    0.062160] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.069274] NET: Registered PF_INET protocol family
[    0.069467] IP idents hash table entries: 65536 (order: 7, 524288 bytes, linear)
[    0.072392] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)
[    0.072432] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.072444] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
[    0.072695] TCP bind hash table entries: 32768 (order: 8, 1048576 bytes, linear)
[    0.073512] TCP: Hash tables configured (established 32768 bind 32768)
[    0.073646] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
[    0.073731] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
[    0.074002] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    0.074522] RPC: Registered named UNIX socket transport module.
[    0.074529] RPC: Registered udp transport module.
[    0.074531] RPC: Registered tcp transport module.
[    0.074534] RPC: Registered tcp-with-tls transport module.
[    0.074536] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.074544] NET: Registered PF_XDP protocol family
[    0.074563] PCI: CLS 0 bytes, default 64
[    0.075836] Initialise system trusted keyrings
[    0.076070] workingset: timestamp_bits=46 max_order=20 bucket_order=0
[    0.076359] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.076607] NFS: Registering the id_resolver key type
[    0.076629] Key type id_resolver registered
[    0.076632] Key type id_legacy registered
[    0.076651] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.076657] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    0.131844] Key type asymmetric registered
[    0.131856] Asymmetric key parser 'x509' registered
[    0.131927] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[    0.132106] io scheduler mq-deadline registered
[    0.132111] io scheduler kyber registered
[    0.132141] io scheduler bfq registered
[    0.135192] pinctrl-single 4084000.pinctrl: 34 pins, size 136
[    0.135800] pinctrl-single f4000.pinctrl: 151 pins, size 604
[    0.137379] ledtrig-cpu: registered to indicate activity on CPUs
[    0.143503] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.152253] loop: module loaded
[    0.153265] megasas: 07.727.03.00-rc1
[    0.157300] tun: Universal TUN/TAP device driver, 1.6
[    0.158342] VFIO - User Level meta-driver version: 0.3
[    0.159598] usbcore: registered new interface driver usb-storage
[    0.160146] i2c_dev: i2c /dev entries driver
[    0.161643] sdhci: Secure Digital Host Controller Interface driver
[    0.161649] sdhci: Copyright(c) Pierre Ossman
[    0.161859] sdhci-pltfm: SDHCI platform and OF driver helper
[    0.162683] SMCCC: SOC_ID: ARCH_SOC_ID not implemented, skipping ....
[    0.163560] usbcore: registered new interface driver usbhid
[    0.163565] usbhid: USB HID core driver
[    0.164884] hw perfevents: enabled with armv8_cortex_a53 PMU driver, 7 (0,8000003f) counters available
[    0.165567] optee: probing for conduit method.
[    0.165594] optee: revision 4.6 (71785645fa6ce42d)
[    0.165971] optee: dynamic shared memory is enabled
[    0.166629] optee: initialized driver
[    0.166747] random: crng init done
[    0.168431] Initializing XFRM netlink socket
[    0.168460] NET: Registered PF_PACKET protocol family
[    0.168532] Key type dns_resolver registered
[    0.177199] registered taskstats version 1
[    0.177462] Loading compiled-in X.509 certificates
[    0.189416] ti-sci 44043000.system-controller: ABI: 4.0 (firmware rev 0x000b '11.1.5--v11.01.05 (Fancy Rat)')
[    0.232231] /bus@f0000/i2c@20000000/usb-power-controller@3f/connector: Fixed dependency cycle(s) with /bus@f0000/dwc3-usb@f900000/usb@31000000
[    0.232489] /bus@f0000/i2c@20000000/pmic@48: Fixed dependency cycle(s) with /bus@f0000/i2c@20000000/pmic@48/regulators/buck5
[    0.232667] omap_i2c 20000000.i2c: bus 0 rev0.12 at 400 kHz
[    0.234659] pca953x 1-0023: supply vcc not found, using dummy regulator
[    0.234764] pca953x 1-0023: using AI
[    0.252103] /connector-hdmi: Fixed dependency cycle(s) with /bus@f0000/i2c@20010000/bridge-hdmi@3b
[    0.252168] /bus@f0000/dss@30200000: Fixed dependency cycle(s) with /bus@f0000/i2c@20010000/bridge-hdmi@3b
[    0.252233] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /connector-hdmi
[    0.252289] /bus@f0000/i2c@20010000/bridge-hdmi@3b: Fixed dependency cycle(s) with /bus@f0000/dss@30200000
[    0.252483] omap_i2c 20010000.i2c: bus 1 rev0.12 at 100 kHz
[    0.253669] omap_i2c 20020000.i2c: bus 2 rev0.12 at 400 kHz
[    0.253873] ti-sci-intr 4210000.interrupt-controller: Interrupt Router 5 domain created
[    0.254037] ti-sci-intr bus@f0000:interrupt-controller@a00000: Interrupt Router 3 domain created
[    0.254267] ti-sci-inta 48000000.interrupt-controller: Interrupt Aggregator domain 28 created
[    0.254547] ti-sci-inta 4e0a0000.interrupt-controller: Interrupt Aggregator domain 200 created
[    0.256124] ti-udma 485c0100.dma-controller: Number of rings: 82
[    0.258702] ti-udma 485c0100.dma-controller: Channels: 48 (bchan: 18, tchan: 12, rchan: 18)
[    0.261147] ti-udma 485c0000.dma-controller: Number of rings: 150
[    0.265945] ti-udma 485c0000.dma-controller: Channels: 35 (tchan: 20, rchan: 15)
[    0.267882] ti-udma 4e230000.dma-controller: Number of rings: 6
[    0.268410] ti-udma 4e230000.dma-controller: Channels: 6 (bchan: 0, tchan: 0, rchan: 6)
[    0.269622] printk: legacy console [ttyS2] disabled
[    0.270023] 2800000.serial: ttyS2 at MMIO 0x2800000 (irq = 249, base_baud = 3000000) is a 8250
[    0.270077] printk: legacy console [ttyS2] enabled
[    2.003661] spi-nand spi0.0: Winbond SPI NAND was found.
[    2.009005] spi-nand spi0.0: 128 MiB, block size: 256 KiB, page size: 4096, OOB size: 128
[    2.017641] 7 fixed-partitions partitions found on MTD device spi0.0
[    2.024013] Creating 7 MTD partitions on "spi0.0":
[    2.028818] 0x000000000000-0x000000080000 : "ospi_nand.tiboot3"
[    2.036216] 0x000000080000-0x000000280000 : "ospi_nand.tispl"
[    2.043706] 0x000000280000-0x000000680000 : "ospi_nand.u-boot"
[    2.051846] 0x000000680000-0x0000006c0000 : "ospi_nand.env"
[    2.058642] 0x0000006c0000-0x000000700000 : "ospi_nand.env.backup"
[    2.066085] 0x000002000000-0x000007fc0000 : "ospi_nand.rootfs"
[    2.100511] 0x000007fc0000-0x000008000000 : "ospi_nand.phypattern"
[    2.280963] am65-cpsw-nuss 8000000.ethernet: initializing am65 cpsw nuss version 0x6BA01103, cpsw version 0x6BA81103 Ports: 3 quirks:00000006
[    2.329927] davinci_mdio 8000f00.mdio: davinci mdio revision 9.7, bus freq 1000000
[    2.340994] davinci_mdio 8000f00.mdio: phy[0]: device 8000f00.mdio:00, driver TI DP83867
[    2.349218] am65-cpsw-nuss 8000000.ethernet: initialized cpsw ale version 1.5
[    2.356350] am65-cpsw-nuss 8000000.ethernet: ALE Table size 512, Policers 32
[    2.364211] am65-cpsw-nuss 8000000.ethernet: CPTS ver 0x4e8a010c, freq:500000000, add_val:1 pps:1
[    2.378146] am65-cpsw-nuss 8000000.ethernet: set new flow-id-base 19
[    2.388237] /bus@f0000/i2c@20000000/usb-power-controller@3f/connector: Fixed dependency cycle(s) with /bus@f0000/dwc3-usb@f900000/usb@31000000
[    2.401157] /bus@f0000/dwc3-usb@f900000/usb@31000000: Fixed dependency cycle(s) with /bus@f0000/i2c@20000000/usb-power-controller@3f/connector
[    2.418513] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[    2.424038] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[    2.431807] xhci-hcd xhci-hcd.0.auto: USB3 root hub has no ports
[    2.437812] xhci-hcd xhci-hcd.0.auto: hcc params 0x0258fe6d hci version 0x110 quirks 0x0000808020000010
[    2.447243] xhci-hcd xhci-hcd.0.auto: irq 264, io mem 0x31100000
[    2.454022] hub 1-0:1.0: USB hub found
[    2.457791] hub 1-0:1.0: 1 port detected
[    2.463411] cpufreq: cpufreq_online: CPU0: Running at unlisted initial frequency: 1200000 KHz, changing to: 1250000 KHz
[    2.475956] mmc0: CQHCI version 5.10
[    2.520511] mmc0: SDHCI controller on fa10000.mmc [fa10000.mmc] using ADMA 64-bit
[    2.600609] mmc0: Command Queue Engine enabled
[    2.605083] mmc0: new HS200 MMC card at address 0001
[    2.610570] mmcblk0: mmc0:0001 G1M15L 29.6 GiB
[    2.616258]  mmcblk0: p1 p2
[    2.619550] mmcblk0boot0: mmc0:0001 G1M15L 31.5 MiB
[    2.625392] mmcblk0boot1: mmc0:0001 G1M15L 31.5 MiB
[    2.631164] mmcblk0rpmb: mmc0:0001 G1M15L 4.00 MiB, chardev (239:0)
[    2.760489] tps6594-rtc tps6594-rtc.5.auto: registered as rtc1
[    2.767016] pca953x 1-0022: supply vcc not found, using dummy regulator
[    2.773746] pca953x 1-0022: using AI
[    2.781790] clk: Disabling unused clocks
[    2.784118] mmc1: CQHCI version 5.10
[    2.790211] PM: genpd: Disabling unused power domains
[    2.795354] ALSA device list:
[    2.798383]   No soundcards found.
[    2.830687] mmc1: SDHCI controller on fa00000.mmc [fa00000.mmc] using ADMA 64-bit
[    2.838379] Waiting for root device PARTUUID=076c4a2a-02...
[    2.896241] mmc1: new ultra high speed SDR104 SDHC card at address 59b4
[    2.903400] mmcblk1: mmc1:59b4 USD00 29.5 GiB
[    2.909231]  mmcblk1: p1 p2
[    2.916306] EXT4-fs (mmcblk1p2): INFO: recovery required on readonly filesystem
[    2.923639] EXT4-fs (mmcblk1p2): write access will be enabled during recovery
[    2.960536] EXT4-fs (mmcblk1p2): orphan cleanup on readonly fs
[    2.966445] EXT4-fs (mmcblk1p2): recovery complete
[    2.974529] EXT4-fs (mmcblk1p2): mounted filesystem c7bd28db-c662-4b0f-ade5-5165b1d39904 ro with ordered data mode. Quota mode: none.
[    2.986588] VFS: Mounted root (ext4 filesystem) readonly on device 179:98.
[    2.994735] devtmpfs: mounted
[    2.998416] Freeing unused kernel memory: 2752K
[    3.003019] Run /sbin/init as init process
init started: BusyBox v1.36.1 ()
starting pid 98, tty '': '/bin/mount -t proc proc /proc'
starting pid 99, tty '': '/bin/mount -t sysfs sysfs /sys'
starting pid 100, tty '': '/bin/mount -t devtmpfs devtmpfs /dev'
mount: mounting devtmpfs on /dev failed: Device or resource busy
starting pid 101, tty '': '/bin/mount -o remount,rw /'
[    3.084058] EXT4-fs (mmcblk1p2): re-mounted c7bd28db-c662-4b0f-ade5-5165b1d39904 r/w.
starting pid 103, tty '': '/bin/mkdir -p /dev/pts'
starting pid 104, tty '': '/bin/mount -t devpts devpts /dev/pts'
starting pid 105, tty '': '/bin/mount -a'
starting pid 106, tty '': '/sbin/swapon -a'
starting pid 112, tty '': '/etc/init.d/rcS'
starting pid 114, tty '/dev/ttyS2': '/usr/sbin/ttyrun ttyS2 /sbin/getty 115200 ttyS2'
process '/usr/sbin/ttyrun ttyS0 /sbin/getty 115200 ttyS0' (pid 113) exited. Scheduling for restart.

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|     |  _| .'| . | . |  |   __|  _| . | | | -_|  _|  _|
|__|__|_| |__,|_  |___|  |__|  |_| |___|_| |___|___|_|  
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Arago Project am62axx-evm /dev/ttyS2

Arago 2025.01 am62axx-evm /dev/ttyS2

0 Bin Liu 8 months ago in reply to Derek T

TI__Guru**** 182366 points

Hi Derek,

Derek T said:
cat /sys/firmware/devicetree/base/chosen/bootargs yields the same thing
console=ttyS2,115200n8 root=PARTUUID=076c4a2a-02 rootwaitroot

The bootargs in /sys/firmware/devicetree/... doesn't have "loglevel=1" means the change to kernel devicetree is not applied properly. Though I am not familiar with Yocto to comment on what could be wrong.

Processors

Processors forum

SK-AM62A-LP: Quiet kernel bootarg in Falcon Mode