cpu: Rename Makefiles from .inc to .mk

The .inc suffix is confusing to various tools as it's not specific to
Makefiles. This means that editors don't recognize the files, and don't
open them with highlighting and any other specific editor functionality.

This issue is also seen in the release notes generation script where
Makefiles get renamed before running cloc.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I552d487978906f5ea74c3d0d85373fe5b2de3f38
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80068
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/cpu/Makefile.mk b/src/cpu/Makefile.mk
new file mode 100644
index 0000000000..b1c1b1bb3e
--- /dev/null
+++ b/src/cpu/Makefile.mk
@@ -0,0 +1,71 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+################################################################################
+## Subdirectories
+################################################################################
+subdirs-y += amd
+subdirs-y += armltd
+subdirs-y += intel
+subdirs-y += ti
+subdirs-$(CONFIG_ARCH_X86) += x86
+subdirs-$(CONFIG_CPU_QEMU_X86) += qemu-x86
+subdirs-$(CONFIG_CPU_POWER9) += power9
+
+$(eval $(call create_class_compiler,cpu_microcode,x86_32))
+################################################################################
+## Rules for building the microcode blob in CBFS
+################################################################################
+
+cbfs-files-$(CONFIG_USE_CPU_MICROCODE_CBFS_BINS) += cpu_microcode_blob.bin
+
+ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER),y)
+cbfs-files-y  += cpu_microcode_blob.bin
+cpu_microcode_blob.bin-file = $(objgenerated)/microcode.bin
+
+$(objgenerated)/microcode.bin: $(call strip_quotes,$(CONFIG_CPU_MICROCODE_HEADER_FILES))
+	echo "   util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin \"$(CONFIG_CPU_MICROCODE_HEADER_FILES)\""
+	util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin $(CONFIG_CPU_MICROCODE_HEADER_FILES)
+endif
+
+ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS),y)
+$(obj)/cpu_microcode_blob.bin: cpu_microcode_bins := $(call strip_quotes,$(CONFIG_CPU_UCODE_BINARIES))
+endif
+# otherwise `cpu_microcode_bins` should be filled by platform makefiles
+
+# We just mash all microcode binaries together into one binary to rule them all.
+# This approach assumes that the microcode binaries are properly padded, and
+# their headers specify the correct size. This works fairly well on isolatied
+# updates, such as Intel and some AMD microcode, but won't work very well if the
+# updates are wrapped in a container, like AMD's microcode update container. If
+# there is only one microcode binary (i.e. one container), then we don't have
+# this issue, and this rule will continue to work.
+$(obj)/cpu_microcode_blob.bin: $$(wildcard $$(cpu_microcode_bins)) $(DOTCONFIG)
+	for bin in $(cpu_microcode_bins); do \
+		if [ ! -f "$$bin" ]; then \
+			echo "Microcode error: $$bin does not exist"; \
+			NO_MICROCODE_FILE=1; \
+		fi; \
+	done; \
+	if [ -n "$$NO_MICROCODE_FILE" ]; then \
+		if [ -z "$(CONFIG_USE_BLOBS)" ] && [ -n "$(CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS)" ]; then \
+			echo "Try enabling binary-only repository in Kconfig 'General setup' menu."; \
+		fi; \
+		false; \
+	fi
+	$(if $(cpu_microcode_bins),,false) # fail if no file is given at all
+	@printf "    MICROCODE  $(subst $(obj)/,,$(@))\n"
+	@echo $(cpu_microcode_bins)
+	cat $(cpu_microcode_bins) > $@
+
+cpu_microcode_blob.bin-file ?= $(obj)/cpu_microcode_blob.bin
+cpu_microcode_blob.bin-type := microcode
+# The AMD LPC SPI DMA controller requires source files to be 64 byte aligned.
+ifeq ($(CONFIG_SOC_AMD_COMMON_BLOCK_LPC_SPI_DMA),y)
+cpu_microcode_blob.bin-align := 64
+else
+cpu_microcode_blob.bin-align := 16
+endif
+
+ifneq ($(CONFIG_CPU_MICROCODE_CBFS_LOC),)
+cpu_microcode_blob.bin-COREBOOT-position := $(CONFIG_CPU_MICROCODE_CBFS_LOC)
+endif