diff options
| author | Alexander Lobakin <alobakin@pm.me> | 2020-11-01 18:13:01 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-11-13 01:47:22 +0300 |
| commit | a3fb655027c33a9281d3b813798b15bdf1e75d43 (patch) | |
| tree | 88e8a6dab1a076d93e494d85ef5cacdbf27a3947 /arch/mips/boot/compressed | |
| parent | 9d63bcb87157c90899525d9db25b37106cd0afe3 (diff) | |
| download | linux-a3fb655027c33a9281d3b813798b15bdf1e75d43.tar.xz | |
mips: boot: add support for self-extracting FIT images (vmlinuz.itb)
Commit c3e2ee657418 ("MIPS: generic: Add support for zboot") added
support for self-extracting images to Generic MIPS. However, the
intended way to boot Generic MIPS kernels is using FIT Images and
UHI boot protocol, but currently there's no way to make self-extracting
FIT Image (only legacy uzImages).
Add a target for this named "vmlinuz.itb", which will consist of
vmlinuz.bin and selected DT blobs. It will allow to have the advantages
of both UHI and self-extracting images.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/boot/compressed')
| -rw-r--r-- | arch/mips/boot/compressed/Makefile | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index fa2c1e1b303f..4c3bc7e3d56d 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -172,3 +172,51 @@ targets += ../uzImage.bin $(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE $(call if_changed,uimage,none) + +# +# Flattened Image Tree (.itb) image +# + +ifeq ($(ADDR_BITS),32) +itb_addr_cells = 1 +endif +ifeq ($(ADDR_BITS),64) +itb_addr_cells = 2 +endif + +targets += ../vmlinuz.its.S + +quiet_cmd_its_cat = CAT $@ + cmd_its_cat = cat $(real-prereqs) >$@ + +$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE + $(call if_changed,its_cat) + +targets += ../vmlinuz.its + +quiet_cmd_cpp_its_S = ITS $@ + cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ + -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ + -DVMLINUX_BINARY="\"$(2)\"" \ + -DVMLINUX_COMPRESSION="\"none\"" \ + -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ + -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ + -DADDR_BITS=$(ADDR_BITS) \ + -DADDR_CELLS=$(itb_addr_cells) + +$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE + $(call if_changed,cpp_its_S,vmlinuz.bin) + +targets += ../vmlinuz.itb + +quiet_cmd_itb-image = ITB $@ + cmd_itb-image = \ + env PATH="$(objtree)/scripts/dtc:$(PATH)" \ + $(BASH) $(MKIMAGE) \ + -D "-I dts -O dtb -p 500 \ + --include $(objtree)/arch/mips \ + --warning no-unit_address_vs_reg" \ + -f $(2) $@ + +$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE + $(call if_changed,itb-image,$<) |