Error building yocto

Hello,
I’m having the following error trying to build Yocto using the instructions from github. It says undefined reference to sifive_reset_bind.

| riscv64-oe-linux-ld.bfd: drivers/built-in.o: in function `sifive_fu540_clk_bind':
| /home/ricecracker/test/build/tmp-glibc/work/mpfs-oe-linux/u-boot/1_2020.10-r0/git/drivers/clk/sifive/fu540-prci.c:702: undefined reference to `sifive_reset_bind'
| riscv64-oe-linux-ld.bfd: drivers/built-in.o: in function `__prci_consumer_reset':
| /home/ricecracker/test/build/tmp-glibc/work/mpfs-oe-linux/u-boot/1_2020.10-r0/git/drivers/clk/sifive/fu540-prci.c:539: undefined reference to `_u_boot_list_2_driver_2_sifive_reset'
| make[1]: *** [/home/ricecracker/test/build/tmp-glibc/work/mpfs-oe-linux/u-boot/1_2020.10-r0/git/Makefile:1753: u-boot] Error 1
| make[1]: Leaving directory '/home/ricecracker/test/build/tmp-glibc/work/mpfs-oe-linux/u-boot/1_2020.10-r0/build'
| make: *** [Makefile:167: sub-make] Error 2
| make: Leaving directory '/home/ricecracker/test/build/tmp-glibc/work/mpfs-oe-linux/u-boot/1_2020.10-r0/git'
| WARNING: exit code 1 from a shell command.
| 
ERROR: Task (/home/ricecracker/test/openembedded-core/meta/recipes-bsp/u-boot/u-boot_2020.10.bb:do_compile) failed with exit code '1'

Thanks.

Which exact yocto are you building, and which exact github instructions are you following, and what exact commands did you type. And what system are you building on?

mpfs-oe-linux sounds like Microsemi Icicle Kit support. You should talk to Microsemi about that. SiFive doesn’t have any association with that project. There is a Icicle Kit discussion group on the RISC-V forums. See
https://exchange.riscv.org/c/polarfiresoc-icicle/6

Hi, yes you are right. This is yocto for expansion board. I will contact microsemi. Thanks for the help.