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[Arista] Add emmc quirks in boot0 to improve reliability (#10013)

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Why I did it
Fix some unreliability seen on emmc device with some AMD CPUs

How I did it
Added a kernel parameter to add quirks to
It depends on a sonic-linux-kernel change to work properly but will be a no-op without it.
The quirk added is SDHCI_QUIRK2_BROKEN_HS200 used to downgrade the link speed for the eMMC.
This commit is contained in:
Samuel Angebault 2023-02-09 10:46:09 -08:00 committed by GitHub
parent 4fc991e84e
commit dd7948bf17
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 1 deletions
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5
files/Aboot/boot0.j2
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@ -624,6 +624,7 @@ write_platform_specific_cmdline() {
if in_array "$platform" "crow" "magpie"; then
cmdline_add amd_iommu=off
cmdline_add modprobe.blacklist=snd_hda_intel,hdaudio
cmdline_add sdhci.append_quirks2=0x40
read_system_eeprom
fi
if in_array "$platform" "woodpecker"; then
@ -654,7 +655,6 @@ write_platform_specific_cmdline() {
fi
cmdline_add "varlog_size=$varlog_size"
cmdline_add "sonic.mode=$sonic_mode"
}
@ -672,6 +672,9 @@ write_image_specific_cmdline() {
# disable unified cgroup hierarchy to workaround dockerd limitation
cmdline_add systemd.unified_cgroup_hierarchy=0
# increase kernel log buffer size
cmdline_add log_buf_len=1M
# verbosity
cmdline_add quiet
# Start showing systemd information from the first failing unit if any.