coreboot

Fails to build a QEMU/ARM with a coreinfo payload. An error is:

ERROR: Ramstage region _postram_cbfs_cache overlapped by: fallback/payload
Makefile.inc:1171: recipe for target 'check-ramstage-overlaps' failed

The same problem seems to happen since 2017 [1][2].

[1] https://coreboot.coreboot.narkive.com/fUz0RT5Z/error-ramstage-region-postram-cbfs-cache-overlapped
[2] https://mail.coreboot.org/pipermail/coreboot/2017-February/083336.html

The details I did are:
$ make crossgcc-arm CPUS=$(nproc)
$ make -C payloads/coreinfo
$ make menuconfig
select 'Mainboard' menu
Beside 'Mainboard vendor' should be '(Emulation)'
Beside 'Mainboard model' should be 'QEMU armv7 (vexpress-a9)'

select 'Payload' menu
select 'Add a Payload'
choose 'An Elf executable payload'
select 'Payload path and filename'
enter 'payloads/coreinfo/build/coreinfo.elf'
$ make
…..(omitted).....
W: Written area will abut bottom of target region: any unused space will keep its current contents
CBFS fallback/romstage
CBFS fallback/ramstage
CBFS config
CBFS revision
CBFS fallback/payload
INFO: Performing operation on 'COREBOOT' region...
ERROR: Ramstage region _postram_cbfs_cache overlapped by: fallback/payload
Makefile.inc:1171: recipe for target 'check-ramstage-overlaps' failed
make: *** [check-ramstage-overlaps] Error 1