Fwd: Re: ASUS KGPE-D16 ECC disabled by default - coreboot

1 Jun 2019

---------- Forwarded message ---------
From: Matt B &lt;matthewwbradley6(a)gmail.com&gt;
Date: Sat, Jun 1, 2019 at 12:17 PM
Subject: Re: [coreboot] Re: ASUS KGPE-D16 ECC disabled by default
To: Kinky Nekoboi &lt;kinky_nekoboi(a)nekoboi.moe&gt;

Hi,

So configuring ECC to be on by default in nvram has no effect?

Sincerely,
    -Matt

On Sat, Jun 1, 2019 at 11:08 AM Kinky Nekoboi &lt;kinky_nekoboi(a)nekoboi.moe&gt;
wrote:

...
  OK i flashed a recompiled version with nvram options
enabled.

 ECC is enabled by default:
 boot_option = Fallback
 reboot_counter = 0x0
 interleave_chip_selects = Enable
 interleave_nodes = Disable
 interleave_memory_channels = Enable
 max_mem_clock = DDR3-1600
 multi_core = Enable
 debug_level = Debug
 ecc_scrub_rate = 1.28us
 slow_cpu = off
 nmi = Disable
 gart = Enable
 power_on_after_fail = On
 ECC_memory = Enable
 ECC_redirection = Enable
 hypertransport_speed_limit = Auto
 minimum_memory_voltage = 1.5V
 compute_unit_siblings = Enable
 cpu_c_states = Enable
 cpu_cc6_state = Enable
 sata_ahci_mode = Enable
 sata_alpm = Disable
 dimm_spd_checksum = Enforce
 probe_filter = Auto
 l3_cache_partitioning = Disable
 ieee1394_controller = Enable
 iommu = Enable
 cpu_core_boost = Enable
 ehci_async_data_cache = Enable
 experimental_memory_speed_boost = Disable
 maximum_p_state_limit = 0xf

 Still i need to force the kernel to enable ECC.
 Am 01.06.19 um 14:10 schrieb Kinky Nekoboi:

 Hello everybody, i just setup an ASUS KGPE-D16 with coreboot in my
 fileserver today.

 CPU: Opteron 6380 with newest microcode loaded in coreboot

 1x 8GB Hynix DDR3 ECC

 1x 8GB Samsung DDR3 ECC

 ECC works after you force the linux kernel / the amd_edac module to
 enable ECC as you can see on this dmesg output :

 root@lain:~# dmesg | grep -i edac
 [   44.487132] EDAC MC: Ver: 3.0.0
 [   44.520632] EDAC amd64: DRAM ECC disabled.
 [   44.520670] EDAC amd64: ECC disabled in the BIOS or no ECC
 capability, module will not load.
 [   44.520670] EDAC amd64: Forcing ECC on!
 [   44.520747] EDAC amd64: DRAM ECC disabled on this node, enabling...
 [   44.520749] EDAC amd64: Hardware accepted DRAM ECC Enable
 [   44.520750] EDAC amd64: F15h detected (node 0).
 [   44.520802] EDAC MC: DCT0 chip selects:
 [   44.520804] EDAC amd64: MC: 0:     0MB 1:     0MB
 [   44.520805] EDAC amd64: MC: 2:     0MB 3:     0MB
 [   44.520806] EDAC amd64: MC: 4:     0MB 5:     0MB
 [   44.520807] EDAC amd64: MC: 6:     0MB 7:     0MB
 [   44.520808] EDAC MC: DCT1 chip selects:
 [   44.520809] EDAC amd64: MC: 0:     0MB 1:     0MB
 [   44.520810] EDAC amd64: MC: 2:     0MB 3:     0MB
 [   44.520811] EDAC amd64: MC: 4:     0MB 5:     0MB
 [   44.520812] EDAC amd64: MC: 6:     0MB 7:     0MB
 [   44.520813] EDAC amd64: using x4 syndromes.
 [   44.520813] EDAC amd64: MCT channel count: 0
 [   44.520903] EDAC MC0: Giving out device to module amd64_edac
 controller F15h: DEV 0000:00:18.2 (INTERRUPT)
 [   44.520904] EDAC amd64: DRAM ECC enabled.
 [   44.520916] EDAC amd64: F15h detected (node 1).
 [   44.520958] EDAC MC: DCT0 chip selects:
 [   44.520959] EDAC amd64: MC: 0:     0MB 1:     0MB
 [   44.520961] EDAC amd64: MC: 2:  4096MB 3:  4096MB
 [   44.520962] EDAC amd64: MC: 4:     0MB 5:     0MB
 [   44.520963] EDAC amd64: MC: 6:     0MB 7:     0MB
 [   44.520964] EDAC MC: DCT1 chip selects:
 [   44.520965] EDAC amd64: MC: 0:     0MB 1:     0MB
 [   44.520966] EDAC amd64: MC: 2:  4096MB 3:  4096MB
 [   44.520967] EDAC amd64: MC: 4:     0MB 5:     0MB
 [   44.520968] EDAC amd64: MC: 6:     0MB 7:     0MB
 [   44.520969] EDAC amd64: using x4 syndromes.
 [   44.520969] EDAC amd64: MCT channel count: 2
 [   44.521294] EDAC MC1: Giving out device to module amd64_edac
 controller F15h: DEV 0000:00:19.2 (INTERRUPT)
 [   44.521313] EDAC PCI0: Giving out device to module amd64_edac
 controller EDAC PCI controller: DEV 0000:00:18.2 (POLLED)
 [   44.521314] AMD64 EDAC driver v3.4.0

 Is there an NVRAM Option for ECC and should i rebuild coreboot with
 nvram options enabled ?

 best regards

 kinky_nekoboi

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