coreboot

I can't seem to build a bootable image for the Thinkpad X201 with the new GCC-11-based toolchain. Rather than booting up, the machine just flashes a bunch of LEDs and then resets itself. If I use the old toolchain with GCC 8, the image works just fine.

Unfortunately I don't have a console on this machine so I don't have any logs. I don't know whether is is relevant or not, but cbfstool reports different layouts for the images:

$ util/cbfstool/cbfstool coreboot-gcc-8.rom print
FMAP REGION: COREBOOT
Name                           Offset     Type           Size   Comp
cbfs master header             0x0        cbfs header        32 none
fallback/romstage              0x80       stage           65328 none
cpu_microcode_blob.bin         0x10040    microcode       13312 none
fallback/ramstage              0x13480    stage          106502 LZMA (227804 decompressed)
vgaroms/seavgabios.bin         0x2d500    raw             28160 none
config                          0x34340    raw               643 none
revision                       0x34600    raw               716 none
build_info                     0x34900    raw               101 none
fallback/dsdt.aml              0x349c0    raw             14119 none
cmos_layout.bin                0x38140    cmos_layout      1612 none
fallback/postcar               0x387c0    stage           20024 none
fallback/payload               0x3d640    simple elf      69197 none
payload_config                  0x4e4c0    raw              1728 none
payload_revision               0x4ebc0    raw               237 none
etc/ps2-keyboard-spinup        0x4ed00    raw                 8 none
(empty)                        0x4ed40    null           641380 none
bootblock                      0xeb6c0    bootblock       18176 none

$ util/cbfstool/cbfstool coreboot-gcc-11.rom print
FMAP REGION: COREBOOT
Name                           Offset     Type           Size   Comp
cbfs master header             0x0        cbfs header        32 
fallback/romstage              0x80       stage           63664 none
cpu_microcode_blob.bin         0xf9c0     microcode       13312 none
fallback/ramstage              0x12e00    stage          106836 LZMA (228284 decompressed)
vgaroms/seavgabios.bin         0x2cfc0    raw             28160 none
config                          0x33e00    raw               643 none
revision                       0x340c0    raw               716 none
build_info                     0x343c0    raw               101 none
fallback/dsdt.aml              0x34480    raw             14119 none
cmos_layout.bin                0x37c00    cmos_layout      1612 none
fallback/postcar               0x38280    stage           19976 none
fallback/payload               0x3d100    simple elf      69050 none
payload_config                  0x4df00    raw              1728 none
payload_revision               0x4e600    raw               236 none
etc/ps2-keyboard-spinup        0x4e740    raw                 8 none
(empty)                        0x4e780    null           642916 none
bootblock                      0xeb700    bootblock       18112 none