[coreboot] A question related to extern AmlCode[] when building coreboot in ramstage error.

Hello,

I would like to ask if anybody have ever met the same error. I am using an older version of Intel FSP to build coreboot
for an Atom 3845 processor.
On the ramstage compilation, i am getting this error: 
...../src/mainboard/intel/minnowmax/acpi_tables.c:135: undefined reference to `AmlCode'

As i can see AmlCode[] seems to be an external array in that file. But it doesn't exist anywhere in the whole version of coreboot
that i am having.

Anyone knows how this error could be possibly treated?

Thanks, 
Nikos.