Note:
Although the setting
undefined
is available as a policy setting, it should not be used.
• From Lenovo XClarity Essentials OneCLI
Note:
Please note that a Local IPMI user and password must be setup in Lenovo XClarity Controller for
remote accessing to the target system.
To set the TPM policy from Lenovo XClarity Essentials OneCLI:
1. Read TpmTcmPolicyLock to check whether the TPM_TCM_POLICY has been locked:
OneCli.exe config show imm.TpmTcmPolicyLock
--override
--imm <userid>:<password>@<ip_address>
Note:
The imm.TpmTcmPolicyLock value must be 'Disabled', which means TPM_TCM_POLICY is
NOT locked and changes to the TPM_TCM_POLICY are permitted. If the return code is ‘Enabled’
then no changes to the policy are permitted. The planar may still be used if the desired setting is
correct for the system being replaced.
2. Configure the TPM_TCM_POLICY into XCC:
– For the customer in Chinese Mainland with no TCM/TPM:
OneCli.exe config set imm.TpmTcmPolicy "NeitherTpmNorTcm"
--override
--imm <userid>:<password>@<ip_address>
– For the customer in Chinese Mainland that has installed TCM/TPM module on the original system
(TCM/TPM module should be moved to the FRU prior to changing policy)
OneCli.exe config set imm.TpmTcmPolicy "TcmOnly"
--override
--imm <userid>:<password>@<ip_address>
– For the customer outside of Chinese Mainland:
OneCli.exe config set imm.TpmTcmPolicy "TpmOnly"
--override
--imm <userid>:<password>@<ip_address>
3. Issue reset command to reset system:
OneCli.exe misc ospower reboot --imm <userid>:<password>@<ip_address>
4. Read back the value to check whether the change has been accepted:
OneCli.exe config show imm.TpmTcmPolicy
--override
--imm <userid>:<password>@<ip_address>
Notes:
– If the read back value is matched it means the TPM_TCM_POLICY has been set correctly.
imm.TpmTcmPolicy is defined as below:
– Value 0 use string “Undefined” , which means UNDEFINED policy.
– Value 1 use string “NeitherTpmNorTcm”, which means TPM_PERM_DISABLED.
– Value 2 use string “TpmOnly”, which means TPM_ALLOWED.
– Value 4 use string “TcmOnly”, which means TCM_ALLOWED.
– Below 4 steps must also be used to ‘lock’ the TPM_TCM_POLICY when using OneCli/ASU
commands:
5. Read TpmTcmPolicyLock to check whether the TPM_TCM_POLICY has been locked , command as
below:
OneCli.exe config show imm.TpmTcmPolicyLock
--override
--imm <userid>:<password>@<ip_address>
The value must be 'Disabled', it means TPM_TCM_POLICY is NOT locked and must be set.
6. Lock the TPM_TCM_POLICY:
OneCli.exe config set imm.TpmTcmPolicyLock "Enabled"
--override
--imm <userid>:<password>@<ip_address>
7. Issue reset command to reset system, command as below:
OneCli.exe misc ospower reboot --imm <userid>:<password>@<ip_address>
During the reset, UEFI will read the value from imm.TpmTcmPolicyLock, if the value is 'Enabled' and
the imm.TpmTcmPolicy value is invalid, UEFI will lock the TPM_TCM_POLICY setting.
The valid value for imm.TpmTcmPolicy includes 'NeitherTpmNorTcm', 'TpmOnly' and 'TpmOnly'.
.
Hardware replacement procedures
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