Tested on QDF2400 system. The console used here is an SOL connection to the server.
== With earlycon=qdf2400_e44,0xff78ef1000 (SOL) == Loading Linux 4.10.0-20-generic ... Loading initial ramdisk ... EFI stub: Booting Linux Kernel... EFI stub: Using DTB from configuration table EFI stub: Exiting boot services and installing virtual address map... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.10.0-20-generic (manjo@tangerine) (gcc version 5.3.1 20160413 (Ubuntu/Linaro 5.3.1-14ubuntu2) ) #22~lp1689818+sru3.4 SMP Wed May 10 19:28:25 UTC 2017 (Ubuntu 4.10.0-20.22~lp1689818+sru3.4-generic 4.10.8) [ 0.000000] Boot CPU: AArch64 Processor [510f8000] [ 0.000000] earlycon: qdf2400_e44 at MMIO 0x000000ff78ef1000 (options '') [ 0.000000] bootconsole [qdf2400_e44] enabled [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: EFI v2.60 by Qualcomm [ 0.000000] efi: ACPI 2.0=0x95e0000 PROP=0xe823580 SMBIOS 3.0=0x5750000 ESRT=0xac7c198 MEMATTR=0xac58018 RNG=0xe7ce798 [ 0.000000] esrt: Reserving ESRT space from 0x000000000ac7c198 to 0x000000000ac7c270. [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000095E0000 000024 (v02 QCOM ) [ 0.000000] ACPI: XSDT 0x00000000095D0000 000084 (v01 QCOM QDF2400 00000000 QCOM 00000001) [ 0.000000] ACPI: FACP 0x00000000093D0000 000114 (v06 QCOM QDF2400 00000000 INTL 20150515) [ 0.000000] ACPI: DSDT 0x00000000093E0000 0344BE (v02 QCOM QDF2400 00000004 INTL 20150515) [ 0.000000] ACPI: DBG2 0x0000000009470000 000072 (v00 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: IORT 0x0000000009450000 000A40 (v00 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: TPM2 0x0000000009440000 000040 (v04 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: BERT 0x0000000009420000 000030 (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: GTDT 0x00000000093C0000 00007C (v02 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: PCCT 0x00000000093A0000 0000AC (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: SPMI 0x0000000009390000 000041 (v04 QCOM QDF2400 00000000 INTL 20150515) [ 0.000000] ACPI: APIC 0x0000000009430000 000F70 (v04 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: HEST 0x0000000009460000 000288 (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: MCFG 0x00000000093B0000 00005C (v01 QCOM QDF2400 00000001 QCOM 00000001) [ 0.000000] ACPI: SPCR 0x00000000042D0000 000050 (v04 QCOM QDF2400 00000001 QCOM 00000001) [ 0.000000] ACPI: SPCR: console: qdf2400_e44,mmio,0xff78ef1000,115200 [ 0.000000] ACPI: NUMA: Failed to initialise from firmware [ 0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x00000017ffffffff] [ 0.000000] NUMA: Adding memblock [0x200000 - 0x20ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x820000 - 0x307ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3080000 - 0x308ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3090000 - 0x31fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3200000 - 0x33fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3410000 - 0x42cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x42d0000 - 0x42dffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x42e0000 - 0x573ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5740000 - 0x57fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5800000 - 0x5806fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5807000 - 0x580afff] on node 0 [ 0.000000] NUMA: Adding memblock [0x580b000 - 0x588ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5890000 - 0x592ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5930000 - 0x5b2bfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5b2c000 - 0x8b3dfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8b3e000 - 0x8beffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8bf0000 - 0x8dcffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8dd0000 - 0x8ddffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8de0000 - 0x919ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a0000 - 0x91a0fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a1000 - 0x91a3fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a4000 - 0x91cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91d0000 - 0x930ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9310000 - 0x938ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9390000 - 0x947ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9480000 - 0x948cfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x948d000 - 0x97cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97d0000 - 0x97d0fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97d1000 - 0x97dbfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97dc000 - 0xe7bffff] on node 0 [ 0.000000] NUMA: Adding memblock [0xe7c0000 - 0xe7effff] on node 0 [ 0.000000] NUMA: Adding memblock [0xe7f0000 - 0xfffffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x10800000 - 0x17feffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x1c010000 - 0x1c7fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x1c810000 - 0x7efbffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7efc0000 - 0x7efdffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7efe0000 - 0x7efeffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7eff0000 - 0x7effffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7f000000 - 0x17ffffffff] on node 0 [ 0.000000] NUMA: Initmem setup node 0 [mem 0x00200000-0x17ffffffff] [ 0.000000] NUMA: NODE_DATA [mem 0x17fffdcd00-0x17fffdffff] [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000200000-0x00000000ffffffff] [ 0.000000] Normal [mem 0x0000000100000000-0x00000017ffffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000200000-0x000000000020ffff] [ 0.000000] node 0: [mem 0x0000000000820000-0x000000000307ffff] [ 0.000000] node 0: [mem 0x0000000003080000-0x000000000308ffff] [ 0.000000] node 0: [mem 0x0000000003090000-0x00000000031fffff] [ 0.000000] node 0: [mem 0x0000000003200000-0x00000000033fffff] [ 0.000000] node 0: [mem 0x0000000003410000-0x00000000042cffff] [ 0.000000] node 0: [mem 0x00000000042d0000-0x00000000042dffff] [ 0.000000] node 0: [mem 0x00000000042e0000-0x000000000573ffff] [ 0.000000] node 0: [mem 0x0000000005740000-0x00000000057fffff] [ 0.000000] node 0: [mem 0x0000000005800000-0x0000000005806fff] [ 0.000000] node 0: [mem 0x0000000005807000-0x000000000580afff] [ 0.000000] node 0: [mem 0x000000000580b000-0x000000000588ffff] [ 0.000000] node 0: [mem 0x0000000005890000-0x000000000592ffff] [ 0.000000] node 0: [mem 0x0000000005930000-0x0000000005b2bfff] [ 0.000000] node 0: [mem 0x0000000005b2c000-0x0000000008b3dfff] [ 0.000000] node 0: [mem 0x0000000008b3e000-0x0000000008beffff] [ 0.000000] node 0: [mem 0x0000000008bf0000-0x0000000008dcffff] [ 0.000000] node 0: [mem 0x0000000008dd0000-0x0000000008ddffff] [ 0.000000] node 0: [mem 0x0000000008de0000-0x000000000919ffff] [ 0.000000] node 0: [mem 0x00000000091a0000-0x00000000091a0fff] [ 0.000000] node 0: [mem 0x00000000091a1000-0x00000000091a3fff] [ 0.000000] node 0: [mem 0x00000000091a4000-0x00000000091cffff] [ 0.000000] node 0: [mem 0x00000000091d0000-0x000000000930ffff] [ 0.000000] node 0: [mem 0x0000000009310000-0x000000000938ffff] [ 0.000000] node 0: [mem 0x0000000009390000-0x000000000947ffff] [ 0.000000] node 0: [mem 0x0000000009480000-0x000000000948cfff] [ 0.000000] node 0: [mem 0x000000000948d000-0x00000000097cffff] [ 0.000000] node 0: [mem 0x00000000097d0000-0x00000000097d0fff] [ 0.000000] node 0: [mem 0x00000000097d1000-0x00000000097dbfff] [ 0.000000] node 0: [mem 0x00000000097dc000-0x000000000e7bffff] [ 0.000000] node 0: [mem 0x000000000e7c0000-0x000000000e7effff] [ 0.000000] node 0: [mem 0x000000000e7f0000-0x000000000fffffff] [ 0.000000] node 0: [mem 0x0000000010800000-0x0000000017feffff] [ 0.000000] node 0: [mem 0x000000001c010000-0x000000001c7fffff] [ 0.000000] node 0: [mem 0x000000001c810000-0x000000007efbffff] [ 0.000000] node 0: [mem 0x000000007efc0000-0x000000007efdffff] [ 0.000000] node 0: [mem 0x000000007efe0000-0x000000007efeffff] [ 0.000000] node 0: [mem 0x000000007eff0000-0x000000007effffff] [ 0.000000] node 0: [mem 0x000000007f000000-0x00000017ffffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000200000-0x00000017ffffffff] [ 0.000000] psci: probing for conduit method from ACPI. [ 0.000000] psci: PSCIv1.0 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: MIGRATE_INFO_TYPE not supported. [ 0.000000] percpu: Embedded 23 pages/cpu @ffffdf185f7b0000 s54680 r8192 d31336 u94208 [ 0.000000] Detected PIPT I-cache on CPU0 [ 0.000000] CPU features: enabling workaround for Qualcomm Technologies Falkor erratum 1003 [ 0.000000] CPU features: enabling workaround for Qualcomm Technologies Falkor erratum 1009 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 24752056 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=UUID=968531c2-2cee-41ca-9fb4-9975a1a8bb70 ro module_blacklist=at803x earlycon=qdf2400_e44,0xff78ef1000 vt.handoff=7 == With earlycon=qdf2400_e44,0xff78ed1000 (UART) == Loading Linux 4.10.0-20-generic ... Loading initial ramdisk ... EFI stub: Booting Linux Kernel... EFI stub: Using DTB from configuration table EFI stub: Exiting boot services and installing virtual address map... [ 2.465081] console [ttyAMA2] enabled [ 2.470478] bootconsole [qdf2400_e44] disabled == With earlycon, enable earlycon after ACPI tables are parsed. == Loading Linux 4.10.0-20-generic ... Loading initial ramdisk ... EFI stub: Booting Linux Kernel... EFI stub: Using DTB from configuration table EFI stub: Exiting boot services and installing virtual address map... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.10.0-20-generic (manjo@tangerine) (gcc version 5.3.1 20160413 (Ubuntu/Linaro 5.3.1-14ubuntu2) ) #22~lp1689818+sru3.4 SMP Wed May 10 19:28:25 UTC 2017 (Ubuntu 4.10.0-20.22~lp1689818+sru3.4-generic 4.10.8) [ 0.000000] Boot CPU: AArch64 Processor [510f8000] [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: EFI v2.60 by Qualcomm [ 0.000000] efi: ACPI 2.0=0x95e0000 PROP=0xe823580 SMBIOS 3.0=0x5750000 ESRT=0xac7c198 MEMATTR=0xac54018 RNG=0xe7ce798 [ 0.000000] esrt: Reserving ESRT space from 0x000000000ac7c198 to 0x000000000ac7c270. [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000095E0000 000024 (v02 QCOM ) [ 0.000000] ACPI: XSDT 0x00000000095D0000 000084 (v01 QCOM QDF2400 00000000 QCOM 00000001) [ 0.000000] ACPI: FACP 0x00000000093D0000 000114 (v06 QCOM QDF2400 00000000 INTL 20150515) [ 0.000000] ACPI: DSDT 0x00000000093E0000 0344BE (v02 QCOM QDF2400 00000004 INTL 20150515) [ 0.000000] ACPI: DBG2 0x0000000009470000 000072 (v00 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: IORT 0x0000000009450000 000A40 (v00 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: TPM2 0x0000000009440000 000040 (v04 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: BERT 0x0000000009420000 000030 (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: GTDT 0x00000000093C0000 00007C (v02 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: PCCT 0x00000000093A0000 0000AC (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: SPMI 0x0000000009390000 000041 (v04 QCOM QDF2400 00000000 INTL 20150515) [ 0.000000] ACPI: APIC 0x0000000009430000 000F70 (v04 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: HEST 0x0000000009460000 000288 (v01 QCOM QDF2400 00000001 INTL 20150515) [ 0.000000] ACPI: MCFG 0x00000000093B0000 00005C (v01 QCOM QDF2400 00000001 QCOM 00000001) [ 0.000000] ACPI: SPCR 0x00000000042D0000 000050 (v04 QCOM QDF2400 00000001 QCOM 00000001) [ 0.000000] ACPI: SPCR: console: qdf2400_e44,mmio,0xff78ef1000,115200 [ 0.000000] earlycon: qdf2400_e44 at MMIO 0x000000ff78ef1000 (options '115200') [ 0.000000] bootconsole [qdf2400_e44] enabled [ 0.000000] ACPI: NUMA: Failed to initialise from firmware [ 0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x00000017ffffffff] [ 0.000000] NUMA: Adding memblock [0x200000 - 0x20ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x820000 - 0x307ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3080000 - 0x308ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3090000 - 0x31fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3200000 - 0x33fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x3410000 - 0x42cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x42d0000 - 0x42dffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x42e0000 - 0x573ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5740000 - 0x57fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5800000 - 0x5806fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5807000 - 0x580afff] on node 0 [ 0.000000] NUMA: Adding memblock [0x580b000 - 0x588ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5890000 - 0x592ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5930000 - 0x5b2bfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x5b2c000 - 0x8b3dfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8b3e000 - 0x8beffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8bf0000 - 0x8dcffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8dd0000 - 0x8ddffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x8de0000 - 0x919ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a0000 - 0x91a0fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a1000 - 0x91a3fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91a4000 - 0x91cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x91d0000 - 0x930ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9310000 - 0x938ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9390000 - 0x947ffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x9480000 - 0x948cfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x948d000 - 0x97cffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97d0000 - 0x97d0fff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97d1000 - 0x97dbfff] on node 0 [ 0.000000] NUMA: Adding memblock [0x97dc000 - 0xe7bffff] on node 0 [ 0.000000] NUMA: Adding memblock [0xe7c0000 - 0xe7effff] on node 0 [ 0.000000] NUMA: Adding memblock [0xe7f0000 - 0xfffffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x10800000 - 0x17feffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x1c010000 - 0x1c7fffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x1c810000 - 0x7efbffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7efc0000 - 0x7efdffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7efe0000 - 0x7efeffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7eff0000 - 0x7effffff] on node 0 [ 0.000000] NUMA: Adding memblock [0x7f000000 - 0x17ffffffff] on node 0 [ 0.000000] NUMA: Initmem setup node 0 [mem 0x00200000-0x17ffffffff] [ 0.000000] NUMA: NODE_DATA [mem 0x17fffdcd00-0x17fffdffff] [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000200000-0x00000000ffffffff] [ 0.000000] Normal [mem 0x0000000100000000-0x00000017ffffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000200000-0x000000000020ffff] [ 0.000000] node 0: [mem 0x0000000000820000-0x000000000307ffff] [ 0.000000] node 0: [mem 0x0000000003080000-0x000000000308ffff] [ 0.000000] node 0: [mem 0x0000000003090000-0x00000000031fffff] [ 0.000000] node 0: [mem 0x0000000003200000-0x00000000033fffff] [ 0.000000] node 0: [mem 0x0000000003410000-0x00000000042cffff] [ 0.000000] node 0: [mem 0x00000000042d0000-0x00000000042dffff] [ 0.000000] node 0: [mem 0x00000000042e0000-0x000000000573ffff] [ 0.000000] node 0: [mem 0x0000000005740000-0x00000000057fffff] [ 0.000000] node 0: [mem 0x0000000005800000-0x0000000005806fff] [ 0.000000] node 0: [mem 0x0000000005807000-0x000000000580afff] [ 0.000000] node 0: [mem 0x000000000580b000-0x000000000588ffff] [ 0.000000] node 0: [mem 0x0000000005890000-0x000000000592ffff] [ 0.000000] node 0: [mem 0x0000000005930000-0x0000000005b2bfff] [ 0.000000] node 0: [mem 0x0000000005b2c000-0x0000000008b3dfff] [ 0.000000] node 0: [mem 0x0000000008b3e000-0x0000000008beffff] [ 0.000000] node 0: [mem 0x0000000008bf0000-0x0000000008dcffff] [ 0.000000] node 0: [mem 0x0000000008dd0000-0x0000000008ddffff] [ 0.000000] node 0: [mem 0x0000000008de0000-0x000000000919ffff] [ 0.000000] node 0: [mem 0x00000000091a0000-0x00000000091a0fff] [ 0.000000] node 0: [mem 0x00000000091a1000-0x00000000091a3fff] [ 0.000000] node 0: [mem 0x00000000091a4000-0x00000000091cffff] [ 0.000000] node 0: [mem 0x00000000091d0000-0x000000000930ffff] [ 0.000000] node 0: [mem 0x0000000009310000-0x000000000938ffff] [ 0.000000] node 0: [mem 0x0000000009390000-0x000000000947ffff] [ 0.000000] node 0: [mem 0x0000000009480000-0x000000000948cfff] [ 0.000000] node 0: [mem 0x000000000948d000-0x00000000097cffff] [ 0.000000] node 0: [mem 0x00000000097d0000-0x00000000097d0fff] [ 0.000000] node 0: [mem 0x00000000097d1000-0x00000000097dbfff] [ 0.000000] node 0: [mem 0x00000000097dc000-0x000000000e7bffff] [ 0.000000] node 0: [mem 0x000000000e7c0000-0x000000000e7effff] [ 0.000000] node 0: [mem 0x000000000e7f0000-0x000000000fffffff] [ 0.000000] node 0: [mem 0x0000000010800000-0x0000000017feffff] [ 0.000000] node 0: [mem 0x000000001c010000-0x000000001c7fffff] [ 0.000000] node 0: [mem 0x000000001c810000-0x000000007efbffff] [ 0.000000] node 0: [mem 0x000000007efc0000-0x000000007efdffff] [ 0.000000] node 0: [mem 0x000000007efe0000-0x000000007efeffff] [ 0.000000] node 0: [mem 0x000000007eff0000-0x000000007effffff] [ 0.000000] node 0: [mem 0x000000007f000000-0x00000017ffffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000200000-0x00000017ffffffff] [ 0.000000] psci: probing for conduit method from ACPI. [ 0.000000] psci: PSCIv1.0 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: MIGRATE_INFO_TYPE not supported. [ 0.000000] percpu: Embedded 23 pages/cpu @ffffeb6f1f7b0000 s54680 r8192 d31336 u94208 [ 0.000000] Detected PIPT I-cache on CPU0 [ 0.000000] CPU features: enabling workaround for Qualcomm Technologies Falkor erratum 1003 [ 0.000000] CPU features: enabling workaround for Qualcomm Technologies Falkor erratum 1009 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 24752056 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=UUID=968531c2-2cee-41ca-9fb4-9975a1a8bb70 ro module_blacklist=at803x earlycon vt.handoff=7 ** Description changed: [Impact] The work-around for the Qualcomm Datacenter Technologies QDF2400 erratum 44 sets the qdf2400_e44_present" global variable if the work-around is needed. However, this check does not happen until after earlycon is initialized, which means the work-around is not used, and the console hangs as soon as it displays one character. [Test Case] - Enable earlycon and boot the kernel. + Enable earlycon and boot the kernel. Please see comments below for detailed test results on QDF2400 system. [Regression Potential] This impacts only Qualcomm Datacenter Technologies QDF2400 platforms. [Fix] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e53e597fd4c4a0b6ae58e57d76a240927fd17eaa https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h =tty-testing&id=5a0722b898f851b9ef108ea7babc529e4efc773d -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1689818 Title: tty: pl011: fix earlycon work-around for QDF2400 erratum 44 Status in linux package in Ubuntu: Incomplete Bug description: [Impact] The work-around for the Qualcomm Datacenter Technologies QDF2400 erratum 44 sets the qdf2400_e44_present" global variable if the work-around is needed. However, this check does not happen until after earlycon is initialized, which means the work-around is not used, and the console hangs as soon as it displays one character. [Test Case] Enable earlycon and boot the kernel. Please see comments below for detailed test results on QDF2400 system. [Regression Potential] This impacts only Qualcomm Datacenter Technologies QDF2400 platforms. [Fix] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e53e597fd4c4a0b6ae58e57d76a240927fd17eaa https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h =tty-testing&id=5a0722b898f851b9ef108ea7babc529e4efc773d To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1689818/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
