contiki/platform/galileo/Makefile.customrules-galileo
Michael LeMay 4cdb7ba9b6 x86: Add TSS-based protection domain support
This patch extends the protection domain framework with an additional
plugin to use Task-State Segment (TSS) structures to offload much of
the work of switching protection domains to the CPU.  This can save
space compared to paging, since paging requires two 4KiB page tables
and one 32-byte page table plus one whole-system TSS and an additional
32-byte data structure for each protection domain, whereas the
approach implemented by this patch just requires a 128-byte data
structure for each protection domain.  Only a small number of
protection domains will typically be used, so
n * 128 < 8328 + (n * 32).

For additional information, please refer to cpu/x86/mm/README.md.

GCC 6 is introducing named address spaces for the FS and GS segments
[1].  LLVM Clang also provides address spaces for the FS and GS
segments [2].  This patch also adds support to the multi-segment X86
memory management subsystem for using these features instead of inline
assembly blocks, which enables type checking to detect some address
space mismatches.

[1] https://gcc.gnu.org/onlinedocs/gcc/Named-Address-Spaces.html
[2] http://llvm.org/releases/3.3/tools/clang/docs/LanguageExtensions.html#target-specific-extensions
2016-04-22 08:16:39 -07:00

60 lines
2.3 KiB
Makefile

GDB ?= gdb
OPENOCD_SCRIPTS = $(CONTIKI)/platform/galileo/bsp/openocd-scripts
.PHONY: debug $(CONTIKI_PROJECT)
# Multiboot ELF binary
MULTIBOOT_SFX = $(TARGET)
MULTIBOOT = $(CONTIKI_PROJECT).$(MULTIBOOT_SFX)
# UEFI binary
UEFI_DLL_SFX = $(TARGET).dll
UEFI_DLL = $(CONTIKI_PROJECT).$(UEFI_SFX)
# The GenFw program is unable to process absolute symbols like _stext_addr,
# etc., that are defined in quarkX1000_dma.ld and quarkX1000_multi_seg.ld
# and used to configure segments in multi-segment.c, etc. Furthermore,
# relocating the UEFI image during load would result in those symbols not
# pointing to the expected image locations. So, relocation data is omitted
# from the intermediate UEFI DLL. This will only result in a
# correctly-functioning build if the UEFI firmware does not attempt to
# relocate the UEFI image, so it may be desirable in the future to revisit
# this design. To emit relocation data, '-Xlinker --emit-relocs' should be
# appended to the following line.
UEFI_LDFLAGS = -Xlinker --entry=uefi_start
UEFI_SFX = $(TARGET).efi
UEFI = $(CONTIKI_PROJECT).$(UEFI_SFX)
# Suffixes for final (non-intermediate) files to be built
FINAL_SFXS = $(MULTIBOOT_SFX)
ifeq ($(EN_UEFI),1)
FINAL_SFXS += $(UEFI_SFX)
endif
debug: $(MULTIBOOT)
@openocd -s $(OPENOCD_SCRIPTS) -f debug.cfg &> $(shell pwd)/LOG_OPENOCD &
@$(GDB) $< -ex "target remote :3333"
CUSTOM_RULE_LINK=1
%.$(MULTIBOOT_SFX): %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a
$(TRACE_LD)
$(Q)$(LD) $(LDFLAGS) $(MULTIBOOT_LDFLAGS) $(TARGET_STARTFILES) ${filter-out %.a,$^} \
${filter %.a,$^} $(TARGET_LIBFILES) -o $@
%.$(UEFI_DLL_SFX): %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a
$(TRACE_LD)
$(Q)$(LD) $(LDFLAGS) $(UEFI_LDFLAGS) $(TARGET_STARTFILES) ${filter-out %.a,$^} \
${filter %.a,$^} $(TARGET_LIBFILES) -o $@
%.$(UEFI_SFX): %.$(UEFI_DLL_SFX)
$(Q)$(GEN_FW) -o $@ -e UEFI_APPLICATION $^
# The Intel Galileo firmware has been observed to not relocate the image
# if its base is set to the 1M boundary. This makes debugging easier,
# since the symbols in the intermediate DLL then correspond to the load
# addresses.
$(Q)$(GEN_FW) -o $@ --rebase 0x100000 $@
$(CONTIKI_PROJECT): $(addprefix $(CONTIKI_PROJECT).,$(FINAL_SFXS))
@$(SIZE) $^
CLEAN += $(addprefix $(CONTIKI_PROJECT).,$(FINAL_SFXS))