ACS fails to boot to shell with latest sync

[smangali-qc]

Hi @chetan-rathore ,

We are trying to boot the device with the latest ACS sync (6.18 kernel). The device is not able to boot and keeps rebooting after this point. Could you please check and let us know?

[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd4b2]
[ 0.000000] Linux version 6.18.6-yocto-standard (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.4.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Thu Jan 22 05:04:05 UTC 2026
[ 0.000000] KASLR enabled
[ 0.000000] Machine model: Qualcomm Technologies, Inc. Lemans EVK
[ 0.000000] efi: EFI v2.7 by Qualcomm Technologies, Inc.
[ 0.000000] efi: RTPROP=0xac59f098 MEMATTR=0xaa3fe018 ESRT=0xaa626f98 RNG=0xa9fcb018 MEMRESERVE=0xaa2c3d98
[ 0.000000] random: crng init done
[ 0.000000] esrt: Reserving ESRT space from 0x00000000aa626f98 to 0x00000000aa626fd0.
[ 0.000000] earlycon: qcom_geni0 at MMIO 0x0000000000a8c000 (options '115200n8')
[ 0.000000] printk: legacy bootconsole [qcom_geni0] enabled
.................................
[ 5.384151] psci: CPU5 killed (polled 0 ms)
[ 5.391140] psci: CPU6 killed (polled 0 ms)
[ 5.396107] Detected PIPT I-cache on CPU0
[ 5.396134] GICv3: CPU0: found redistributor 0 region 0:0x0000000017a60000
[ 5.396225] CPU0: Booted secondary processor 0x0000000000 [0x410fd4b2]
[ 5.415298] Detected PIPT I-cache on CPU1
[ 5.415322] GICv3: CPU1: found redistributor 100 region 0:0x0000000017a80000
[ 5.415414] CPU1: Booted secondary processor 0x0000000100 [0x410fd4b2]
[ 5.434655] Detected PIPT I-cache on CPU2
[ 5.434694] GICv3: CPU2: found redistributor 200 region 0:0x0000000017aa0000
[ 5.434832] CPU2: Booted secondary processor 0x0000000200 [0x410fd4b2]
[ 5.454138] Detected PIPT I-cache on CPU3
[ 5.454184] GICv3: CPU3: found redistributor 300 region 0:0x0000000017ac0000
[ 5.454315] CPU3: Booted secondary processor 0x0000000300 [0x410fd4b2]
[ 5.473830] Detected PIPT I-cache on CPU4
[ 5.473862] GICv3: CPU4: found redistributor 10000 region 0:0x0000000017ae0000
[ 5.473951] CPU4: Booted secondary processor 0x0000010000 [0x410fd4b2]
[ 5.493490] Detected PIPT I-cache on CPU5
[ 5.493525] GICv3: CPU5: found redistributor 10100 region 0:0x0000000017b00000
[ 5.493610] CPU5: Booted secondary processor 0x0000010100 [0x410fd4b2]
[ 5.513140] Detected PIPT I-cache on CPU6
[ 5.513197] GICv3: CPU6: found redistributor 10200 region 0:0x0000000017b20000
[ 5.513338] CPU6: Booted secondary processor 0x0000010200 [0x410fd4b2]
[ 5.532495] psci_checker: Trying to turn off and on again group 0 (CPUs 0-7)
[ 5.541234] psci: CPU0 killed (polled 0 ms)
[ 5.547846] psci: CPU1 killed (polled 0 ms)
[ 5.555279] psci: CPU2 killed (polled 0 ms)
[ 5.561287] psci: CPU3 killed (polled 0 ms)
[ 5.566764] psci: CPU4 killed (polled 0 ms)
[ 5.571711] psci: CPU5 killed (polled 0 ms)
[ 5.576561] psci: CPU6 killed (polled 0 ms)
[ 5.581469] Detected PIPT I-cache on CPU0
[ 5.581489] GICv3: CPU0: found redistributor 0 region 0:0x0000000017a60000
[ 5.581585] CPU0: Booted secondary processor 0x0000000000 [0x410fd4b2]
[ 5.600688] Detected PIPT I-cache on CPU1
[ 5.600712] GICv3: CPU1: found redistributor 100 region 0:0x0000000017a80000
[ 5.600808] CPU1: Booted secondary processor 0x0000000100 [0x410fd4b2]
[ 5.620028] Detected PIPT I-cache on CPU2
[ 5.620066] GICv3: CPU2: found redistributor 200 region 0:0x0000000017aa0000
[ 5.620206] CPU2: Booted secondary processor 0x0000000200 [0x410fd4b2]
[ 5.639526] Detected PIPT I-cache on CPU3
[ 5.639573] GICv3: CPU3: found redistributor 300 region 0:0x0000000017ac0000
[ 5.639706] CPU3: Booted secondary processor 0x0000000300 [0x410fd4b2]
[ 5.658949] Detected PIPT I-cache on CPU4
[ 5.658980] GICv3: CPU4: found redistributor 10000 region 0:0x0000000017ae0000
[ 5.659067] CPU4: Booted secondary processor 0x0000010000 [0x410fd4b2]
[ 5.678045] Detected PIPT I-cache on CPU5
[ 5.678077] GICv3: CPU5: found redistributor 10100 region 0:0x0000000017b00000
[ 5.678155] CPU5: Booted secondary processor 0x0000010100 [0x410fd4b2]
[ 5.698120] Detected PIPT I-cache on CPU6
[ 5.698177] GICv3: CPU6: found redistributor 10200 region 0:0x0000000017b20000
[ 5.698303] CPU6: Booted secondary processor 0x0000010200 [0x410fd4b2]
[ 5.717355] psci_checker: Hotplug tests passed OK
[ 5.722216] psci_checker: Starting suspend tests (10 cycles per state)
[ 5.729761] psci_checker: CPU 7 entering suspend cycles, states 1 through 2
[ 5.729760] psci_checker: CPU 4 entering suspend cycles, states 1 through 2
[ 5.729763] psci_checker: CPU 3 entering suspend cycles, states 1 through 2
[ 5.729763] psci_checker: CPU 1 entering suspend cycles, states 1 through 2
[ 5.729764] psci_checker: CPU 2 entering suspend cycles, states 1 through 2
[ 5.729764] psci_checker: CPU 0 entering suspend cycles, states 1 through 2
[ 5.729764] psci_checker: CPU 6 entering suspend cycles, states 1 through 2
[ 5.729765] psci_checker: CPU 5 entering suspend cycles, states 1 through 2
[ 5.865246] psci_checker: CPU 0 suspend test results: success 20, shallow states 0, errors 0
[ 5.873956] psci_checker: CPU 1 suspend test results: success 20, shallow states 0, errors 0
[ 5.882658] psci_checker: CPU 2 suspend test results: success 20, shallow states 0, errors 0
[ 5.891363] psci_checker: CPU 3 suspend test results: success 20, shallow states 0, errors 0
[ 5.900063] psci_checker: CPU 4 suspend test results: success 20, shallow states 0, errors 0
[ 5.908763] psci_checker: CPU 5 suspend test results: success 20, shallow states 0, errors 0
[ 5.917460] psci_checker: CPU 6 suspend test results: success 20, shallow states 0, errors 0
[ 5.926155] psci_checker: CPU 7 suspend test results: success 20, shallow states 0, errors 0
[ 5.934849] psci_checker: Suspend tests passed OK
[ 5.939698] psci_checker: PSCI checker completed
[ 5.944562] clk: Disabling unused clocks
[ 5.949249] PM: genpd: Disabling unused power domains
[ 5.954479] ALSA device list:
[ 5.957543] No soundcards found.
[ 5.965920] Freeing unused kernel memory: 15808K
[ 6.126289] Checked W+X mappings: passed, no W+X pages found
[ 6.132128] Run /init as init process
Starting systemd-udevd version 255.21^
[ 6.425161] qcom-pcie 1c00000.pcie: supply vdda not found, using dummy regulator
[ 6.432834] qcom-pcie 1c10000.pcie: supply vdda not found, using dummy regulator
[ 6.435053] qcom-pcie 1c00000.pcie: supply vddpe-3v3 not found, using dummy regulator
[ 6.440518] qcom-pcie 1c10000.pcie: supply vddpe-3v3 not found, using dummy regulator
[ 6.448611] qcom-pcie 1c00000.pcie: host bridge /pcie@1c00000 ranges:
[ 6.456640] qcom-pcie 1c10000.pcie: host bridge /pcie@1c10000 ranges:
[ 6.463159] qcom-pcie 1c00000.pcie: IO 0x0040200000..0x00402fffff -> 0x0000000000
[ 6.469772] qcom-pcie 1c10000.pcie: IO 0x0060200000..0x00602fffff -> 0x0000000000
[ 6.477994] qcom-pcie 1c00000.pcie: MEM 0x0040300000..0x005fffffff -> 0x0040300000
[ 6.486211] qcom-pcie 1c10000.pcie: MEM 0x0060300000..0x007fffffff -> 0x0060300000

regards,
shiva kumar

[chetan-rathore]

@smangali-qc , the most probable cause could be some missing QC specific configs in ACS 6.18 kernel. Can you review the config file https://github.com/ARM-software/arm-systemready/blob/main/SystemReady-devicetree-band/Yocto/meta-woden/recipes-kernel/linux/files/systemready.cfg and let us know if any particular configs are missing and needs to be added.

Also with previous kernel 6.16 was booting fine on this system.

[chetan-rathore]

Hi @smangali-qc,

FYI, we have release candidate RC0 published on github @https://github.com/ARM-software/arm-systemready/tree/main/SystemReady-devicetree-band/prebuilt_images/v26.03_3.1.2/RC0.

Please share your feedback on the image run. Also let us know if any configs missing in ACS linux kernel in case you still see booting issue