diff --git a/lenovo/t420/4.5-1640-g7e438af995/2017-04-25T04_15_46Z/cbfs.txt b/lenovo/t420/4.5-1640-g7e438af995/2017-04-25T04_15_46Z/cbfs.txt
new file mode 100644
index 0000000..79b8fdc
--- /dev/null
+++ b/lenovo/t420/4.5-1640-g7e438af995/2017-04-25T04_15_46Z/cbfs.txt
@@ -0,0 +1,28 @@
+Name                           Offset     Type         Size
+cbfs master header             0x0        cbfs header  32
+fallback/romstage              0x80       stage        87332
+config                         0x15640    raw          978
+revision                       0x15a80    raw          576
+cmos.default                   0x15d00    cmos_default 256
+cmos_layout.bin                0x15e40    cmos_layout  2076
+payload_config                 0x166c0    raw          1632
+payload_revision               0x16d80    raw          234
+etc/ps2-keyboard-spinup        0x16ec0    raw          8
+bootorder                      0x16f00    raw          15
+etc/show-boot-menu             0x16f80    raw          8
+(empty)                        0x16fc0    null         3800
+mrc.cache                      0x17ec0    mrc_cache    65536
+cpu_microcode_blob.bin         0x27f00    microcode    22528
+fallback/ramstage              0x2d780    stage        97329
+vgaroms/seavgabios.bin         0x45400    raw          27136
+fallback/dsdt.aml              0x4be80    raw          13405
+img/coreinfo                   0x4f340    payload      101336
+img/nvramcui                   0x67f40    payload      140636
+fallback/payload               0x8a500    payload      68078
+img/tint                       0x9af40    payload      61000
+img/memtest                    0xa9dc0    payload      180268
+img/grub2                      0xd5e40    payload      580307
+grub.cfg                       0x163940   raw          4590
+grubtest.cfg                   0x164b80   raw          4582
+(empty)                        0x165dc0   null         6819928
+bootblock                      0x7e6e40   bootblock    4200