| 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | # ========================================================================== |
| 3 | # Installing modules |
| 4 | # ========================================================================== |
| 5 | |
| 6 | PHONY := __modinst |
| 7 | __modinst: |
| 8 | |
| 9 | include $(objtree)/include/config/auto.conf |
| 10 | include $(srctree)/scripts/Kbuild.include |
| 11 | |
| 12 | install-y := |
| 13 | |
| 14 | ifeq ($(KBUILD_EXTMOD)$(sign-only),) |
| 15 | |
| 16 | # remove the old directory and symlink |
| 17 | $(shell rm -fr $(MODLIB)/kernel $(MODLIB)/build) |
| 18 | |
| 19 | install-$(CONFIG_MODULES) += $(addprefix $(MODLIB)/, build modules.order) |
| 20 | |
| 21 | $(MODLIB)/build: FORCE |
| 22 | $(call cmd,symlink) |
| 23 | |
| 24 | quiet_cmd_symlink = SYMLINK $@ |
| 25 | cmd_symlink = ln -s $(CURDIR) $@ |
| 26 | |
| 27 | $(MODLIB)/modules.order: modules.order FORCE |
| 28 | $(call cmd,install_modorder) |
| 29 | |
| 30 | quiet_cmd_install_modorder = INSTALL $@ |
| 31 | cmd_install_modorder = sed 's:^\(.*\)\.o$$:kernel/\1.ko:' $< > $@ |
| 32 | |
| 33 | # Install modules.builtin(.modinfo,.ranges) even when CONFIG_MODULES is disabled. |
| 34 | install-y += $(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo) |
| 35 | |
| 36 | install-$(CONFIG_BUILTIN_MODULE_RANGES) += $(MODLIB)/modules.builtin.ranges |
| 37 | |
| 38 | $(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo modules.builtin.ranges): $(MODLIB)/%: % FORCE |
| 39 | $(call cmd,install) |
| 40 | |
| 41 | endif |
| 42 | |
| 43 | modules := $(call read-file, modules.order) |
| 44 | |
| 45 | ifeq ($(KBUILD_EXTMOD),) |
| 46 | dst := $(MODLIB)/kernel |
| 47 | else |
| 48 | INSTALL_MOD_DIR ?= updates |
| 49 | dst := $(MODLIB)/$(INSTALL_MOD_DIR) |
| 50 | endif |
| 51 | |
| 52 | $(foreach x, % :, $(if $(findstring $x, $(dst)), \ |
| 53 | $(error module installation path cannot contain '$x'))) |
| 54 | |
| 55 | suffix-y := |
| 56 | ifdef CONFIG_MODULE_COMPRESS_ALL |
| 57 | suffix-$(CONFIG_MODULE_COMPRESS_GZIP) := .gz |
| 58 | suffix-$(CONFIG_MODULE_COMPRESS_XZ) := .xz |
| 59 | suffix-$(CONFIG_MODULE_COMPRESS_ZSTD) := .zst |
| 60 | endif |
| 61 | |
| 62 | modules := $(patsubst %.o, $(dst)/%.ko$(suffix-y), $(modules)) |
| 63 | install-$(CONFIG_MODULES) += $(modules) |
| 64 | |
| 65 | __modinst: $(install-y) |
| 66 | @: |
| 67 | |
| 68 | # |
| 69 | # Installation |
| 70 | # |
| 71 | quiet_cmd_install = INSTALL $@ |
| 72 | cmd_install = cp $< $@ |
| 73 | |
| 74 | # Strip |
| 75 | # |
| 76 | # INSTALL_MOD_STRIP, if defined, will cause modules to be stripped after they |
| 77 | # are installed. If INSTALL_MOD_STRIP is '1', then the default option |
| 78 | # --strip-debug will be used. Otherwise, INSTALL_MOD_STRIP value will be used |
| 79 | # as the options to the strip command. |
| 80 | ifdef INSTALL_MOD_STRIP |
| 81 | |
| 82 | ifeq ($(INSTALL_MOD_STRIP),1) |
| 83 | strip-option := --strip-debug |
| 84 | else |
| 85 | strip-option := $(INSTALL_MOD_STRIP) |
| 86 | endif |
| 87 | |
| 88 | quiet_cmd_strip = STRIP $@ |
| 89 | cmd_strip = $(STRIP) $(strip-option) $@ |
| 90 | |
| 91 | else |
| 92 | |
| 93 | quiet_cmd_strip = |
| 94 | cmd_strip = : |
| 95 | |
| 96 | endif |
| 97 | |
| 98 | # |
| 99 | # Signing |
| 100 | # Don't stop modules_install even if we can't sign external modules. |
| 101 | # |
| 102 | ifeq ($(filter pkcs11:%, $(CONFIG_MODULE_SIG_KEY)),) |
| 103 | sig-key := $(if $(wildcard $(CONFIG_MODULE_SIG_KEY)),,$(objtree)/)$(CONFIG_MODULE_SIG_KEY) |
| 104 | else |
| 105 | sig-key := $(CONFIG_MODULE_SIG_KEY) |
| 106 | endif |
| 107 | quiet_cmd_sign = SIGN $@ |
| 108 | cmd_sign = $(objtree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) "$(sig-key)" $(objtree)/certs/signing_key.x509 $@ \ |
| 109 | $(if $(KBUILD_EXTMOD),|| true) |
| 110 | |
| 111 | ifeq ($(sign-only),) |
| 112 | |
| 113 | # During modules_install, modules are signed only when CONFIG_MODULE_SIG_ALL=y. |
| 114 | ifndef CONFIG_MODULE_SIG_ALL |
| 115 | quiet_cmd_sign := |
| 116 | cmd_sign := : |
| 117 | endif |
| 118 | |
| 119 | # Create necessary directories |
| 120 | $(foreach dir, $(sort $(dir $(install-y))), $(shell mkdir -p $(dir))) |
| 121 | |
| 122 | $(dst)/%.ko: %.ko FORCE |
| 123 | $(call cmd,install) |
| 124 | $(call cmd,strip) |
| 125 | $(call cmd,sign) |
| 126 | |
| 127 | ifdef CONFIG_MODULES |
| 128 | __modinst: depmod |
| 129 | |
| 130 | PHONY += depmod |
| 131 | depmod: $(install-y) |
| 132 | $(call cmd,depmod) |
| 133 | |
| 134 | quiet_cmd_depmod = DEPMOD $(MODLIB) |
| 135 | cmd_depmod = $(srctree)/scripts/depmod.sh $(KERNELRELEASE) |
| 136 | endif |
| 137 | |
| 138 | else |
| 139 | |
| 140 | $(dst)/%.ko: FORCE |
| 141 | $(call cmd,sign) |
| 142 | |
| 143 | endif |
| 144 | |
| 145 | # |
| 146 | # Compression |
| 147 | # |
| 148 | quiet_cmd_gzip = GZIP $@ |
| 149 | cmd_gzip = $(KGZIP) -n -f $< |
| 150 | quiet_cmd_xz = XZ $@ |
| 151 | cmd_xz = $(XZ) --check=crc32 --lzma2=dict=1MiB -f $< |
| 152 | quiet_cmd_zstd = ZSTD $@ |
| 153 | cmd_zstd = $(ZSTD) --rm -f -q $< |
| 154 | |
| 155 | $(dst)/%.ko.gz: $(dst)/%.ko FORCE |
| 156 | $(call cmd,gzip) |
| 157 | |
| 158 | $(dst)/%.ko.xz: $(dst)/%.ko FORCE |
| 159 | $(call cmd,xz) |
| 160 | |
| 161 | $(dst)/%.ko.zst: $(dst)/%.ko FORCE |
| 162 | $(call cmd,zstd) |
| 163 | |
| 164 | PHONY += FORCE |
| 165 | FORCE: |
| 166 | |
| 167 | .PHONY: $(PHONY) |