diff --git a/src/mainboard/51nb/x210/Makefile.inc b/src/mainboard/51nb/x210/Makefile.mk
similarity index 100%
rename from src/mainboard/51nb/x210/Makefile.inc
rename to src/mainboard/51nb/x210/Makefile.mk
diff --git a/src/mainboard/acer/aspire_vn7_572g/Makefile.inc b/src/mainboard/acer/aspire_vn7_572g/Makefile.mk
similarity index 100%
rename from src/mainboard/acer/aspire_vn7_572g/Makefile.inc
rename to src/mainboard/acer/aspire_vn7_572g/Makefile.mk
diff --git a/src/mainboard/acer/g43t-am3/Makefile.inc b/src/mainboard/acer/g43t-am3/Makefile.mk
similarity index 100%
rename from src/mainboard/acer/g43t-am3/Makefile.inc
rename to src/mainboard/acer/g43t-am3/Makefile.mk
diff --git a/src/mainboard/amd/bilby/Makefile.inc b/src/mainboard/amd/bilby/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/bilby/Makefile.inc
rename to src/mainboard/amd/bilby/Makefile.mk
diff --git a/src/mainboard/amd/birman/Makefile.inc b/src/mainboard/amd/birman/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/birman/Makefile.inc
rename to src/mainboard/amd/birman/Makefile.mk
diff --git a/src/mainboard/amd/chausie/Makefile.inc b/src/mainboard/amd/chausie/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/chausie/Makefile.inc
rename to src/mainboard/amd/chausie/Makefile.mk
diff --git a/src/mainboard/amd/gardenia/Makefile.inc b/src/mainboard/amd/gardenia/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/gardenia/Makefile.inc
rename to src/mainboard/amd/gardenia/Makefile.mk
diff --git a/src/mainboard/amd/majolica/Makefile.inc b/src/mainboard/amd/majolica/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/majolica/Makefile.inc
rename to src/mainboard/amd/majolica/Makefile.mk
diff --git a/src/mainboard/amd/mandolin/Makefile.inc b/src/mainboard/amd/mandolin/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/mandolin/Makefile.inc
rename to src/mainboard/amd/mandolin/Makefile.mk
diff --git a/src/mainboard/amd/mayan/Makefile.inc b/src/mainboard/amd/mayan/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/mayan/Makefile.inc
rename to src/mainboard/amd/mayan/Makefile.mk
diff --git a/src/mainboard/amd/onyx_poc/Makefile.inc b/src/mainboard/amd/onyx_poc/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/onyx_poc/Makefile.inc
rename to src/mainboard/amd/onyx_poc/Makefile.mk
diff --git a/src/mainboard/amd/pademelon/Makefile.inc b/src/mainboard/amd/pademelon/Makefile.mk
similarity index 100%
rename from src/mainboard/amd/pademelon/Makefile.inc
rename to src/mainboard/amd/pademelon/Makefile.mk
diff --git a/src/mainboard/aopen/dxplplusu/Makefile.inc b/src/mainboard/aopen/dxplplusu/Makefile.mk
similarity index 100%
rename from src/mainboard/aopen/dxplplusu/Makefile.inc
rename to src/mainboard/aopen/dxplplusu/Makefile.mk
diff --git a/src/mainboard/apple/macbook21/Makefile.inc b/src/mainboard/apple/macbook21/Makefile.mk
similarity index 100%
rename from src/mainboard/apple/macbook21/Makefile.inc
rename to src/mainboard/apple/macbook21/Makefile.mk
diff --git a/src/mainboard/apple/macbookair4_2/Makefile.inc b/src/mainboard/apple/macbookair4_2/Makefile.mk
similarity index 100%
rename from src/mainboard/apple/macbookair4_2/Makefile.inc
rename to src/mainboard/apple/macbookair4_2/Makefile.mk
diff --git a/src/mainboard/asrock/b75m-itx/Makefile.inc b/src/mainboard/asrock/b75m-itx/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/b75m-itx/Makefile.inc
rename to src/mainboard/asrock/b75m-itx/Makefile.mk
diff --git a/src/mainboard/asrock/b75pro3-m/Makefile.inc b/src/mainboard/asrock/b75pro3-m/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/b75pro3-m/Makefile.inc
rename to src/mainboard/asrock/b75pro3-m/Makefile.mk
diff --git a/src/mainboard/asrock/b85m_pro4/Makefile.inc b/src/mainboard/asrock/b85m_pro4/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/b85m_pro4/Makefile.inc
rename to src/mainboard/asrock/b85m_pro4/Makefile.mk
diff --git a/src/mainboard/asrock/g41c-gs/Makefile.inc b/src/mainboard/asrock/g41c-gs/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/g41c-gs/Makefile.inc
rename to src/mainboard/asrock/g41c-gs/Makefile.mk
diff --git a/src/mainboard/asrock/h110m/Makefile.inc b/src/mainboard/asrock/h110m/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/h110m/Makefile.inc
rename to src/mainboard/asrock/h110m/Makefile.mk
diff --git a/src/mainboard/asrock/h77pro4-m/Makefile.inc b/src/mainboard/asrock/h77pro4-m/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/h77pro4-m/Makefile.inc
rename to src/mainboard/asrock/h77pro4-m/Makefile.mk
diff --git a/src/mainboard/asrock/h81m-hds/Makefile.inc b/src/mainboard/asrock/h81m-hds/Makefile.mk
similarity index 100%
rename from src/mainboard/asrock/h81m-hds/Makefile.inc
rename to src/mainboard/asrock/h81m-hds/Makefile.mk
diff --git a/src/mainboard/asus/h61-series/Makefile.inc b/src/mainboard/asus/h61-series/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/h61-series/Makefile.inc
rename to src/mainboard/asus/h61-series/Makefile.mk
diff --git a/src/mainboard/asus/maximus_iv_gene-z/Makefile.inc b/src/mainboard/asus/maximus_iv_gene-z/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/maximus_iv_gene-z/Makefile.inc
rename to src/mainboard/asus/maximus_iv_gene-z/Makefile.mk
diff --git a/src/mainboard/asus/p2b/Makefile.inc b/src/mainboard/asus/p2b/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p2b/Makefile.inc
rename to src/mainboard/asus/p2b/Makefile.mk
diff --git a/src/mainboard/asus/p5gc-mx/Makefile.inc b/src/mainboard/asus/p5gc-mx/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p5gc-mx/Makefile.inc
rename to src/mainboard/asus/p5gc-mx/Makefile.mk
diff --git a/src/mainboard/asus/p5qc/Makefile.inc b/src/mainboard/asus/p5qc/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p5qc/Makefile.inc
rename to src/mainboard/asus/p5qc/Makefile.mk
diff --git a/src/mainboard/asus/p5ql-em/Makefile.inc b/src/mainboard/asus/p5ql-em/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p5ql-em/Makefile.inc
rename to src/mainboard/asus/p5ql-em/Makefile.mk
diff --git a/src/mainboard/asus/p5qpl-am/Makefile.inc b/src/mainboard/asus/p5qpl-am/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p5qpl-am/Makefile.inc
rename to src/mainboard/asus/p5qpl-am/Makefile.mk
diff --git a/src/mainboard/asus/p8x7x-series/Makefile.inc b/src/mainboard/asus/p8x7x-series/Makefile.mk
similarity index 100%
rename from src/mainboard/asus/p8x7x-series/Makefile.inc
rename to src/mainboard/asus/p8x7x-series/Makefile.mk
diff --git a/src/mainboard/biostar/th61-itx/Makefile.inc b/src/mainboard/biostar/th61-itx/Makefile.mk
similarity index 100%
rename from src/mainboard/biostar/th61-itx/Makefile.inc
rename to src/mainboard/biostar/th61-itx/Makefile.mk
diff --git a/src/mainboard/bostentech/gbyt4/Makefile.inc b/src/mainboard/bostentech/gbyt4/Makefile.mk
similarity index 100%
rename from src/mainboard/bostentech/gbyt4/Makefile.inc
rename to src/mainboard/bostentech/gbyt4/Makefile.mk
diff --git a/src/mainboard/bytedance/bd_egs/Makefile.inc b/src/mainboard/bytedance/bd_egs/Makefile.mk
similarity index 100%
rename from src/mainboard/bytedance/bd_egs/Makefile.inc
rename to src/mainboard/bytedance/bd_egs/Makefile.mk
diff --git a/src/mainboard/cavium/cn8100_sff_evb/Makefile.inc b/src/mainboard/cavium/cn8100_sff_evb/Makefile.mk
similarity index 100%
rename from src/mainboard/cavium/cn8100_sff_evb/Makefile.inc
rename to src/mainboard/cavium/cn8100_sff_evb/Makefile.mk
diff --git a/src/mainboard/clevo/cml-u/Makefile.inc b/src/mainboard/clevo/cml-u/Makefile.mk
similarity index 100%
rename from src/mainboard/clevo/cml-u/Makefile.inc
rename to src/mainboard/clevo/cml-u/Makefile.mk
diff --git a/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc b/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.mk
similarity index 100%
rename from src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc
rename to src/mainboard/clevo/cml-u/variants/l140cu/Makefile.mk
diff --git a/src/mainboard/clevo/kbl-u/Makefile.inc b/src/mainboard/clevo/kbl-u/Makefile.mk
similarity index 100%
rename from src/mainboard/clevo/kbl-u/Makefile.inc
rename to src/mainboard/clevo/kbl-u/Makefile.mk
diff --git a/src/mainboard/clevo/tgl-u/Makefile.inc b/src/mainboard/clevo/tgl-u/Makefile.mk
similarity index 100%
rename from src/mainboard/clevo/tgl-u/Makefile.inc
rename to src/mainboard/clevo/tgl-u/Makefile.mk
diff --git a/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc b/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.mk
similarity index 100%
rename from src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc
rename to src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.mk
diff --git a/src/mainboard/compulab/intense_pc/Makefile.inc b/src/mainboard/compulab/intense_pc/Makefile.mk
similarity index 100%
rename from src/mainboard/compulab/intense_pc/Makefile.inc
rename to src/mainboard/compulab/intense_pc/Makefile.mk
diff --git a/src/mainboard/dell/e6400/Makefile.inc b/src/mainboard/dell/e6400/Makefile.mk
similarity index 100%
rename from src/mainboard/dell/e6400/Makefile.inc
rename to src/mainboard/dell/e6400/Makefile.mk
diff --git a/src/mainboard/dell/snb_ivb_workstations/Makefile.inc b/src/mainboard/dell/snb_ivb_workstations/Makefile.mk
similarity index 100%
rename from src/mainboard/dell/snb_ivb_workstations/Makefile.inc
rename to src/mainboard/dell/snb_ivb_workstations/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-aarch64/Makefile.inc b/src/mainboard/emulation/qemu-aarch64/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-aarch64/Makefile.inc
rename to src/mainboard/emulation/qemu-aarch64/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-armv7/Makefile.inc b/src/mainboard/emulation/qemu-armv7/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-armv7/Makefile.inc
rename to src/mainboard/emulation/qemu-armv7/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-i440fx/Makefile.inc b/src/mainboard/emulation/qemu-i440fx/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-i440fx/Makefile.inc
rename to src/mainboard/emulation/qemu-i440fx/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-power8/Makefile.inc b/src/mainboard/emulation/qemu-power8/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-power8/Makefile.inc
rename to src/mainboard/emulation/qemu-power8/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-power9/Makefile.inc b/src/mainboard/emulation/qemu-power9/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-power9/Makefile.inc
rename to src/mainboard/emulation/qemu-power9/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-q35/Makefile.inc b/src/mainboard/emulation/qemu-q35/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-q35/Makefile.inc
rename to src/mainboard/emulation/qemu-q35/Makefile.mk
diff --git a/src/mainboard/emulation/qemu-riscv/Makefile.inc b/src/mainboard/emulation/qemu-riscv/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/qemu-riscv/Makefile.inc
rename to src/mainboard/emulation/qemu-riscv/Makefile.mk
diff --git a/src/mainboard/emulation/spike-riscv/Makefile.inc b/src/mainboard/emulation/spike-riscv/Makefile.mk
similarity index 100%
rename from src/mainboard/emulation/spike-riscv/Makefile.inc
rename to src/mainboard/emulation/spike-riscv/Makefile.mk
diff --git a/src/mainboard/facebook/fbg1701/Makefile.inc b/src/mainboard/facebook/fbg1701/Makefile.mk
similarity index 100%
rename from src/mainboard/facebook/fbg1701/Makefile.inc
rename to src/mainboard/facebook/fbg1701/Makefile.mk
diff --git a/src/mainboard/facebook/monolith/Makefile.inc b/src/mainboard/facebook/monolith/Makefile.mk
similarity index 100%
rename from src/mainboard/facebook/monolith/Makefile.inc
rename to src/mainboard/facebook/monolith/Makefile.mk
diff --git a/src/mainboard/facebook/monolith/spd/Makefile.inc b/src/mainboard/facebook/monolith/spd/Makefile.mk
similarity index 100%
rename from src/mainboard/facebook/monolith/spd/Makefile.inc
rename to src/mainboard/facebook/monolith/spd/Makefile.mk
diff --git a/src/mainboard/foxconn/d41s/Makefile.inc b/src/mainboard/foxconn/d41s/Makefile.mk
similarity index 100%
rename from src/mainboard/foxconn/d41s/Makefile.inc
rename to src/mainboard/foxconn/d41s/Makefile.mk
diff --git a/src/mainboard/foxconn/g41s-k/Makefile.inc b/src/mainboard/foxconn/g41s-k/Makefile.mk
similarity index 100%
rename from src/mainboard/foxconn/g41s-k/Makefile.inc
rename to src/mainboard/foxconn/g41s-k/Makefile.mk
diff --git a/src/mainboard/getac/p470/Makefile.inc b/src/mainboard/getac/p470/Makefile.mk
similarity index 100%
rename from src/mainboard/getac/p470/Makefile.inc
rename to src/mainboard/getac/p470/Makefile.mk
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc b/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.mk
similarity index 100%
rename from src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc
rename to src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.mk
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc b/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.mk
similarity index 100%
rename from src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc
rename to src/mainboard/gigabyte/ga-b75m-d3h/Makefile.mk
diff --git a/src/mainboard/gigabyte/ga-d510ud/Makefile.inc b/src/mainboard/gigabyte/ga-d510ud/Makefile.mk
similarity index 100%
rename from src/mainboard/gigabyte/ga-d510ud/Makefile.inc
rename to src/mainboard/gigabyte/ga-d510ud/Makefile.mk
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc b/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.mk
similarity index 100%
rename from src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
rename to src/mainboard/gigabyte/ga-g41m-es2l/Makefile.mk
diff --git a/src/mainboard/gigabyte/ga-h61m-series/Makefile.inc b/src/mainboard/gigabyte/ga-h61m-series/Makefile.mk
similarity index 100%
rename from src/mainboard/gigabyte/ga-h61m-series/Makefile.inc
rename to src/mainboard/gigabyte/ga-h61m-series/Makefile.mk