1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
################################################################################
## Subdirectories
################################################################################
subdirs-y += allwinner
subdirs-y += amd
subdirs-y += armltd
subdirs-y += intel
subdirs-y += ti
subdirs-$(CONFIG_ARCH_X86) += x86
subdirs-$(CONFIG_CPU_QEMU_X86) += qemu-x86
$(eval $(call create_class_compiler,cpu_microcode,x86_32))
################################################################################
## Rules for building the microcode blob in CBFS
################################################################################
ifneq ($(CONFIG_CPU_MICROCODE_MULTIPLE_FILES), y)
cbfs-files-$(CONFIG_USE_CPU_MICROCODE_CBFS_BINS) += cpu_microcode_blob.bin
endif
ifeq ($(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)
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))
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 $^,,false) # fail if no file is given at all
@printf " MICROCODE $(subst $(obj)/,,$(@))\n"
@echo $(cpu_microcode_bins)
cat $^ > $@
cpu_microcode_blob.bin-file ?= $(obj)/cpu_microcode_blob.bin
cpu_microcode_blob.bin-type := microcode
cpu_microcode_blob.bin-align := 16
|
