TPM disappearing across fast-reboot

[   71.035066444,5] INIT: 64-bit LE kernel discovered
[   71.078038665,5] STB: EV_SEPARATOR measured on pcr0 (tpm0, evType 0x4, evLogLen 2649)
[   71.121106055,5] STB: EV_SEPARATOR measured on pcr1 (tpm0, evType 0x4, evLogLen 2725)
[   71.164164053,5] STB: EV_SEPARATOR measured on pcr2 (tpm0, evType 0x4, evLogLen 2801)
[   71.207201786,5] STB: EV_SEPARATOR measured on pcr3 (tpm0, evType 0x4, evLogLen 2877)
[   71.250237662,5] STB: EV_SEPARATOR measured on pcr4 (tpm0, evType 0x4, evLogLen 2953)
[   71.293268302,5] STB: EV_SEPARATOR measured on pcr5 (tpm0, evType 0x4, evLogLen 3029)
[   71.336257203,5] STB: EV_SEPARATOR measured on pcr6 (tpm0, evType 0x4, evLogLen 3105)
[   71.379352618,5] STB: EV_SEPARATOR measured on pcr7 (tpm0, evType 0x4, evLogLen 3181)
[   71.379444759,5] OCC: All Chip Rdy after 0 ms
[   71.412356232,5] INIT: Starting kernel at 0x20011000, fdt at 0x30a85c48 347929 bytes
[   73.117103746,5] OPAL: Switch to little-endian OS
....
[  102.384477677,5] RESET: Initiating fast reboot 1...
....
[  119.109823865,5] STB: BOOTKERNEL verified
[  119.109865819,3] STB: BOOTKERNEL NOT MEASURED. Already exited from boot services
[  119.112363915,5] INIT: 64-bit LE kernel discovered
[  119.122706250,3] STB: EV_SEPARATOR (pcr0) NOT MEASURED. No TPM registered/enabled
[  119.122779528,3] STB: EV_SEPARATOR (pcr1) NOT MEASURED. No TPM registered/enabled
[  119.122831469,3] STB: EV_SEPARATOR (pcr2) NOT MEASURED. No TPM registered/enabled
[  119.122886515,3] STB: EV_SEPARATOR (pcr3) NOT MEASURED. No TPM registered/enabled
[  119.122934701,3] STB: EV_SEPARATOR (pcr4) NOT MEASURED. No TPM registered/enabled
[  119.122982698,3] STB: EV_SEPARATOR (pcr5) NOT MEASURED. No TPM registered/enabled
[  119.123035694,3] STB: EV_SEPARATOR (pcr6) NOT MEASURED. No TPM registered/enabled
[  119.123083749,3] STB: EV_SEPARATOR (pcr7) NOT MEASURED. No TPM registered/enabled
[  119.123151925,5] OCC: All Chip Rdy after 0 ms
[  119.154788230,5] INIT: Starting kernel at 0x20011000, fdt at 0x30a85c48 347929 bytes
[  120.355209799,5] OPAL: Switch to little-endian OS

Already exited from boot services is probably the biggest clue. We're not re-entering an environment where we can talk to the TPM.