Comment 5 for bug 1787993

-- SRU Verification --
Enabled SSBD v4 in firmware and booted the -proposed kernel, no regressions were found on boot.

- Enable SSBD V4 in firmware. -
CAVM_CN99xx# env set core_feature_mask 0x20
core_feature_mask is set to 32
Env Var core_feature_mask set with Value 32
Execute 'env save' Command to make the changes persistent
CAVM_CN99xx# env save

-----------------------------------
       ENV Variable Settings
-----------------------------------
Name : Value
-----------------------------------
turbo : 0
smt : 4
corefreq : 2199
numcores : 28
icispeed : 1
socnclk : 666
socsclk : 1199
memclk : 2199
ddrspeed_auto : 0
ddrspeed : 2400
progcpufreq : 1
progdevfreq : 1
dmc_node_channel_mask : 0000ffff
thermcontrol : 1
thermlimit : 105
enter_debug_shell : 0
dbg_speed_up_ddr_lvl : 0
enable_dram_scrub : 0
ipmbcontrol : 1
ddr_dmt_advanced : 0
cppccontrol : 0
loglevel : 0
uart_params : 115200/8-N-1 none
core_feature_mask : 32
sys_feature_mask : 0x00000000
ddr_refresh_rate : 1
fw_feature_mask : 0x00000000
dram_ce_threshold : 500
dram_ce_window : 60 sec
dram_ce_leak_rate : 1 msec/error
-----------------------------------
CAVM_CN99xx#

- Boot the -proposed kernel -
ubuntu@helo:~$ uname -a
Linux helo 4.15.0-35-generic #38-Ubuntu SMP Wed Sep 12 10:35:16 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux
ubuntu@helo:~$

ubuntu@helo:~$ dmesg | grep -i ssbd
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-35-generic root=UUID=06508e54-5e22-4f62-a30c-56a9268e39be ro ssbd=force-on