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| author | Michael Brown <mcb30@ipxe.org> | 2017-09-18 13:32:39 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2017-09-18 14:38:12 +0100 |
| commit | 7428ab7258e03ddef79ba774432b7b8c11cc2730 (patch) | |
| tree | be87ba6f133384c149b9976718d3694ad047d10b /src/Makefile.housekeeping | |
| parent | d46c53cfc6fe98fbb51afc2560dac26703e3d178 (diff) | |
| download | ipxe-7428ab7258e03ddef79ba774432b7b8c11cc2730.tar.gz | |
[build] Exclude selected directories from Secure Boot builds
When submitting binaries for UEFI Secure Boot signing, certain
known-dubious subsystems (such as 802.11 and NFS) must be excluded
from the build. Mark the directories containing these subsystems as
insecure, and allow the build target to include an explicit "security
flag" (a literal "-sb" appended to the build platform) to exclude
these source directories from the build process.
For example:
make bin-x86_64-efi-sb/ipxe.efi
will build iPXE with all code from the 802.11 and NFS subsystems
excluded from the build.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/Makefile.housekeeping')
| -rw-r--r-- | src/Makefile.housekeeping | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping index f09db3728..00b079263 100644 --- a/src/Makefile.housekeeping +++ b/src/Makefile.housekeeping @@ -299,7 +299,7 @@ endif # # Select build architecture and platform based on $(BIN) # -# BIN has the form bin[-[arch-]platform] +# BIN has the form bin[-[<arch>-]<platform>[-sb]] ARCHS := $(patsubst arch/%,%,$(wildcard arch/*)) PLATFORMS := $(patsubst config/defaults/%.h,%,\ @@ -312,17 +312,18 @@ platforms : ifdef BIN -# Determine architecture portion of $(BIN), if present -BIN_ARCH := $(strip $(foreach A,$(ARCHS),\ - $(patsubst bin-$(A)-%,$(A),\ - $(filter bin-$(A)-%,$(BIN))))) - -# Determine platform portion of $(BIN), if present -ifeq ($(BIN_ARCH),) -BIN_PLATFORM := $(patsubst bin-%,%,$(filter bin-%,$(BIN))) +# Split $(BIN) into architecture, platform, and security flag (where present) +BIN_ELEMENTS := $(subst -,$(SPACE),$(BIN)) +BIN_APS := $(wordlist 2,4,$(BIN_ELEMENTS)) +ifeq ($(lastword $(BIN_APS)),sb) +BIN_AP := $(wordlist 2,$(words $(BIN_APS)),discard $(BIN_APS)) +BIN_SECUREBOOT := 1 else -BIN_PLATFORM := $(patsubst bin-$(BIN_ARCH)-%,%,$(BIN)) +BIN_AP := $(BIN_APS) +BIN_SECUREBOOT := 0 endif +BIN_PLATFORM := $(lastword $(BIN_AP)) +BIN_ARCH := $(wordlist 2,$(words $(BIN_AP)),discard $(BIN_AP)) # Determine build architecture DEFAULT_ARCH := i386 @@ -339,6 +340,13 @@ CFLAGS += -DPLATFORM=$(PLATFORM) platform : @$(ECHO) $(PLATFORM) +# Determine security flag +DEFAULT_SECUREBOOT := 0 +SECUREBOOT := $(firstword $(BIN_SECUREBOOT) $(DEFAULT_SECUREBOOT)) +CFLAGS += -DSECUREBOOT=$(SECUREBOOT) +secureboot : + @$(ECHO) $(SECUREBOOT) + endif # defined(BIN) # Include architecture-specific Makefile @@ -357,6 +365,11 @@ endif # # Source file handling +# Exclude known-insecure files from Secure Boot builds +ifeq ($(SECUREBOOT),0) +SRCDIRS += $(SRCDIRS_INSEC) +endif + # SRCDIRS lists all directories containing source files. srcdirs : @$(ECHO) $(SRCDIRS) |