[coreboot - Bug #322] (New) Image fails to boot on Thinkpad X201 if built with GCC 11

Issue #322 has been reported by Stefan Ott.

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Bug #322: Image fails to boot on Thinkpad X201 if built with GCC 11
https://ticket.coreboot.org/issues/322

* Author: Stefan Ott
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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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