coreboot August 2021

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27 participants
26 discussions

ThinkPad T420 and FireWire chip on Linux
by Alesandar Metodiev 09 Apr '22

09 Apr '22

Hello, Recently I have decided to give a try to coreboot for first time and flashed my ThinkPad T420, but a few weeks ago I have swapped the USB controller on the back, next to the battery, with a FireWire/USB controller (40GAB5809-G200) from another T420. Nothing special, since some models have been shipped like this. The controller is no longer accessible on my laptop. It seems like it may have been detected as an "SD Host Controller" or not detected at all. I will probably have to remove the chip and compare the output of lspci and lshw. If nothing has changed, I will probably have to return the stock BIOS and compare the results again. I have also tried to load some of the firewire kernel modules manually with modprobe. The operating systems I have tested so far are Arch Linux and Xubuntu. I am willing to provide more useful information, boot into a fresh Windows install, flash the chip again or whatever else. Correct me if I am wrong, but if I go back to the stock BIOS, the next time I flash, I will have to disassemble the laptop again and otherwise I must be fine with flashing internally, right? Thanks

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TigerLake RVP TCSS init failure
by Michal Zygowski 27 Oct '21

27 Oct '21

Dear coreboot community, I have encountered problem with silicon init on Tiger Lake RVP platform. I managed to resolve previous issues with memory initialization and now hitting an error with TCSS init. The FSP asserts on IOM ready check, which is 0. The configuration has selected CONFIG_USE_INTEL_FSP_MP_INIT (without MP PPI service). When the CONFIG_USE_INTEL_FSP_TO_CALL_COREBOOT_PUBLISH_MP_PPI is selected, then the FSP-S returns smoothly (at least from one of the phases I guess) and resets after clearing MCEs in coreboot's CPU init: CPU: vendor Intel device 806c0 CPU: family 06, model 8c, stepping 00 Clearing out pending MCEs Setting up local APIC... apic_id: 0x00 done. Turbo is available but hidden Turbo is available and visible CPU #0 initialized Initializing CPU #2 Initializing CPU #6 Initializing CPU #7 CPU: vendor Intel device 806c0 CPU: family 06, model 8c, stepping 00 CPU: vendor Intel device 806c0 CPU: family 06, model 8c, stepping 00 Clearing out pending MCEs Cl (tutaj następuje reset) Any ideas what may cause these issues? When I clean this up, I will upstream the DDR4 variant of TGL UP3 RVP. -- Michał Żygowski Firmware Engineer https://3mdeb.com | @3mdeb_com

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Fwd: Denverton: NVMe not detected when serial console logs are disabled
by Sumo 21 Sep '21

21 Sep '21

Hi Paul, When logs are (almost) disabled the error isn't shown, so if I add the delay with logs disabled the log output will have almost no difference at all. Following are the logs, including a log with Coreboot debug enabled + no delay. For all logs FSP loglevel is set to NoDebug: - nvme-err.log : no delay; coreboot debug_level=Error; NVMe error: at the end of the log is shown the error in the UEFI FW: ERROR: C40000002:V02010007 I0 93B80004-9FB3-11D4-9A3A-0090273FC14D 7E90A998; - nvme-ok-delay.log : 20ms delay; coreboot debug_level=Error; NVMe ok; - nvme-ok.log : no delay; coreboot debug_level=Spew; NVMe ok: the coreboot log output is enough to make NVMe work properly; The NVMe is in the root port 00:0b.0, it is shown as 04:00.0 Thanks, Sumo On Mon, Aug 16, 2021 at 2:57 PM Paul Menzel <pmenzel(a)molgen.mpg.de> wrote: > Dear Sumo, > > > Am 16.08.21 um 18:38 schrieb Sumo: > > > The NVMe is not detected when serial console logs are disabled, I mean by > > setting both Coreboot log_level=Error (or less) and FSP > > PcdFspDebugPrintErrorLevel=NoDebug. Looks like the enumeration fails then > > further on the device is not listed in the UEFI FW (same issue shown in > > either CorebootPayloadPkg or UefiPayloadPkg). When Linux boots the device > > appears normally. > > > > The problem is fixed by adding a small delay inside dev_enumerate() - a > > 20ms delay at the very beginning of the function is enough. I'm wondering > > if there is a better solution for this, the device is already defined in > > the devicetree.cb (set as on). Maybe coreboot is too fast and the NVMe is > > still booting up - or the PCIe link is still training, not sure. Coreboot > > doesn't retry if the device is not detected right away? > > Please share the logs without and with the delay. > > > Kind regards, > > Paul >

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ECC in native ram init? (sandy/ivy)
by Matt B 11 Sep '21

11 Sep '21

Greetings, I gather that while native ram init is very far along and quite featureful, it doesn't support ECC. I'm interested to know if there have been past attempts at it, and what might be required for it to work. In the unofficial mapping [1] it looks like there's just one register to turn it on, plus some registers to inject faults for testing. (I imagine you would also need to clear the memory to avoid lots of errors from random initial contents, and make sure all the DIMMS are the same type first) It certainly "looks" simple (famous last words) so I'm wondering in part if the unofficial register documentation is just very incomplete? Is there any intel guidance on ECC out there? I suppose having ECC is attractive for servers, though I don't think people would still run ivybridge/sandybridge in production. I'm more interested in it for the Optiplex 9010 which appears to support ECC on the factory BIOS. [2] Would make a really nice NAS (external SAS disk shelf) if ECC worked under coreboot. Would also get bonus points as a daily-driver/home server from me. [1] https://doc.coreboot.org/northbridge/intel/sandybridge/nri_registers.html Sincerely, -Matthew Bradley

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Currently broken devicetrees (was Re: X200 dock has been broken since November 2019)
by Nico Huber 07 Sep '21

07 Sep '21

Hi all, that we had another case of a missing-device-below-chip in a devicetree made me write a patch for `sconfig` [1]. Now that it's checking for the issue, that uncovered a few (31) more cases [2] that need to be fixed before upstream can benefit from the patch. Please help to fix the devicetrees. Note, `sconfig` currently doesn't print the file name of override trees, e.g. when it says SCONFIG mainboard/.../devicetree.cb line 10: end: syntax error that might as well refer to line 10 in an override tree. Nico [1] https://review.coreboot.org/c/coreboot/+/51119 [2] https://qa.coreboot.org/job/coreboot-gerrit/164572/ Failing boards: board.AMD_BILBY board.AMD_CEREME board.AMD_MANDOLIN board.GETAC_P470 board.GOOGLE_BRYA0 board.GOOGLE_FALCO board.GOOGLE_PEPPY board.GOOGLE_WOLF board.KONTRON_BSL6 board.LENOVO_R500 board.LENOVO_T430S board.LENOVO_T431S board.LENOVO_T520 board.LENOVO_T530 board.LENOVO_W530 board.LENOVO_X1 board.LENOVO_X220 board.LENOVO_X220I board.LENOVO_X220_MRC_BIN board.LENOVO_X220_OPTION_TABLE_DEBUG_TPM_EXTENDED_CBFS board.LENOVO_X230 board.LENOVO_X230S board.LENOVO_X230T board.LENOVO_X301 board.LENOVO_X60 board.RODA_RK886EX board.SIEMENS_BOXER26

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Cannot flash the BIOS with FPT utilities under Elkhart Lake platform
by Steve Chen 31 Aug '21

31 Aug '21

I tried to update the BIOS through FPT utilities. FPT.exe -F coreboot.rom I got the error message Error 167, protected Range register are set by BIOS... I checked my SPI_BAR register SPI_BAR + 4 [15] =0 (FLOCKDN SPI_BAR + C = 0x0 SPI_BAR + DC [1] = 1 Enable BLE SPI_BAR + DC [5] = 1 Enable EISS Is it caused by BLE and EISS? If yes, how can I change the register to disable BLE and EISS? -- Steve

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New on blogs.coreboot.org: OSFC 2021 - Going Full Open-Source
by blogs.coreboot.org 29 Aug '21

29 Aug '21

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How to add superIO support with serial port logic enabled ?
by jiom jiom 26 Aug '21

26 Aug '21

Thank for help! We want to add UART functions on the board,it is superio to use eSPI interface, How to recognize this interface in thesystem, there is currently modified bootblck.c and devicetree.cb, have otherplaces to modify? Hicari

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A different lapic number in devicetree.cb needed for CPU with the same SKU and steping (Intel Atom C3538).
by dponamorev＠gmail.com 26 Aug '21

26 Aug '21

Hi! We developed our CRB motherboard on Intel Atom C3538 (4 core) Denverton_NS processor. Faced with the following problem. For part of processors with the same SKU and steping (Atom C3538), lapic #4 in devicetree.cb needed (95%), and for the other part lapic #0 (5%). Intel confirmed that it might be so and that's okay ... Part of devicetree.cb: device cpu_cluster 0 on device lapic 4 on end end If we do not specify lapic id correctly in devicetree.cb, freeBSD OS does not BOOT (Unix like). FreeBSD BOOT log (set lapic #4 in devicetree.cb but need lapic #0): Table 'FACP' at 0x7f768070 Table 'SSDT' at 0x7f768170 Table 'MCFG' at 0x7f7693e0 Table 'APIC' at 0x7f769420 APIC: Found table at 0x7f769420 APIC: Using the MADT enumerator. MADT: Found CPU APIC ID 0 ACPI ID 0: enabled SMP: Added CPU 0 (AP) MADT: Found CPU APIC ID 4 ACPI ID 1: enabled SMP: Added CPU 4 (AP) MADT: Found CPU APIC ID 12 ACPI ID 2: enabled SMP: Added CPU 12 (AP) MADT: Found CPU APIC ID 16 ACPI ID 3: enabled SMP: Added CPU 16 (AP) MADT: Found CPU APIC ID 24 ACPI ID 4: enabled SMP: Added CPU 24 (AP) Copyright (c) 1992-2019 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 11.3-RELEASE #0 r349754: Fri Jul 5 04:45:24 UTC 2019 root@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0) Table 'FACP' at 0x7f768070 Table 'SSDT' at 0x7f768170 Table 'MCFG' at 0x7f7693e0 Table 'APIC' at 0x7f769420 Table 'HPET' at 0x7f7694a0 ACPI: No SRAT table found PPIM 0: PA=0xa0000, VA=0xffffffff82410000, size=0x10000, mode=0 VT(vga): resolution 640x480 Preloaded elf kernel "/boot/kernel/kernel" at 0xffffffff8226d000. Calibrating TSC clock ... TSC clock: 2100071708 Hz CPU: Intel(R) Atom(TM) CPU C3538 @ 2.10GHz (2100.07-MHz K8-class CPU) Origin="GenuineIntel" Id=0x506f1 Family=0x6 Model=0x5f Stepping=1 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x4ff8ebbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,RDRAND> AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM> AMD Features2=0x101<LAHF,Prefetch> Structured Extended Features=0x2294e283<FSGSBASE,TSCADJ,SMEP,ERMS,NFPUSG,MPX,PQE,RDSEED,SMAP,CLFLUSHOPT,PROCTRACE,SHA> Structured Extended Features3=0xac000400<MD_CLEAR,IBPB,STIBP,ARCH_CAP,SSBD> XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES> IA32_ARCH_CAPS=0x69<RDCL_NO,SKIP_L1DFL_VME> VT-x: Basic Features=0xda0400<SMM,INS/OUTS,TRUE> Pin-Based Controls=0xff<ExtINT,NMI,VNMI,PreTmr,PostIntr> Primary Processor Controls=0xfff9fffe<INTWIN,TSCOff,HLT,INVLPG,MWAIT,RDPMC,RDTSC,CR3-LD,CR3-ST,CR8-LD,CR8-ST,TPR,NMIWIN,MOV-DR,IO,IOmap,MTF,MSRmap,MONITOR,PAUSE> Secondary Processor Controls=0x1d6fff<APIC,EPT,DT,RDTSCP,x2APIC,VPID,WBINVD,UG,APIC-reg,VID,PAUSE-loop,RDRAND,VMFUNC,VMCS,XSAVES> Exit Controls=0xda0400<PAT-LD,EFER-SV,PTMR-SV> Entry Controls=0xda0400 EPT Features=0x6334141<XO,PW4,UC,WB,2M,1G,INVEPT,AD,single,all> VPID Features=0xf01<INVVPID,individual,single,all,single-globals> TSC: P-state invariant, performance statistics DTLB: 4k pages, fully associative, 32 entries Data TLB: 4 KBytes pages, 4-way set associative, 512 entries Instruction TLB: 4 KByte pages, fully associative, 48 entries DTLB: 2M/4M Byte pages, 4-way associative, 32 entries L2 cache: 2048 kbytes, 16-way associative, 64 bytes/line real memory = 8589934592 (8192 MB) Physical memory chunk(s): 0x0000000000010000 - 0x000000000009bfff, 573440 bytes (140 pages) 0x0000000000100000 - 0x00000000001fffff, 1048576 bytes (256 pages) 0x0000000002400000 - 0x000000007f74ffff, 2100625408 bytes (512848 pages) 0x0000000100000000 - 0x000000027012efff, 6175256576 bytes (1507631 pages) avail memory = 8220336128 (7839 MB) Table 'FACP' at 0x7f768070 Table 'SSDT' at 0x7f768170 Table 'MCFG' at 0x7f7693e0 Table 'APIC' at 0x7f769420 Table 'HPET' at 0x7f7694a0 ACPI: No DMAR table found Event timer "LAPIC" quality 600 ACPI APIC Table: <COREv4 COREBOOT> WARNING: L1 data cache covers less APIC IDs than a core 0 < 1 Package ID shift: 5 L2 cache ID shift: 2 L1 cache ID shift: 1 Core ID shift: 1 panic: AP #4 (PHY# 0) failed! cpuid = 0 KDB: stack backtrace: #0 0xffffffff80b4c4b7 at kdb_backtrace+0x67 #1 0xffffffff80b054ce at vpanic+0x17e #2 0xffffffff80b05343 at panic+0x43 #3 0xffffffff80f752a4 at native_start_all_aps+0x344 #4 0xffffffff80f74c4f at cpu_mp_start+0x2ef #5 0xffffffff80b5cb76 at mp_start+0xa6 #6 0xffffffff80aa0b48 at mi_startup+0x118 #7 0xffffffff8031202c at btext+0x2c Uptime: 1s Other Linux OS boot but show an incorrect number of cores (5 instead of 4) and offline processor cores appear (see log). Ubuntu 18.04 LTS (GNU/Linux 4.15.0-20-generic x86_64) # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 5 On-line CPU(s) list: 0,2-4 Off-line CPU(s) list: 1 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 95 Model name: Intel(R) Atom(TM) CPU C3538 @ 2.10GHz Stepping: 1 CPU MHz: 2097.502 CPU max MHz: 2100.0000 CPU min MHz: 800.0000 BogoMIPS: 4200.00 Virtualization: VT-x L1d cache: 24K L1i cache: 32K L2 cache: 2048K NUMA node0 CPU(s): 0,2-4 What can be done in this situation? How to make a universal version of devicetree.cb?

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KGPE-D16 coreboot support open call
by Piotr Król 23 Aug '21

23 Aug '21

Hi all, since Immunefi was so kind to put 15k EUR pledge for [1] we host open call where we will discuss future of KGPE-D16 and its coreboot support. If you interested about this hardware feel free to join at 15:00 UTC: https://meet.3mdeb.com/kgpe-d16-refresh We will post minutes on github. [1] https://github.com/osresearch/heads/issues/719 -- Piotr Król Founder and Chief Executive Officer GPG: B2EE71E967AA9E4C https://3mdeb.com | @3mdeb_com

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coreboot August 2021