Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE.
Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds.
The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes.
Signed-off-by: Simon Goldschmidt sgoldschmidt@de.pepperl-fuchs.com --- dts/Makefile | 35 +++++++++++++++++++++++++++++++---- include/common.h | 1 + lib/fdtdec.c | 4 ++++ scripts/Makefile.spl | 20 ++------------------ 4 files changed, 38 insertions(+), 22 deletions(-)
diff --git a/dts/Makefile b/dts/Makefile index 3a93dafb51..c9b2a89441 100644 --- a/dts/Makefile +++ b/dts/Makefile @@ -22,10 +22,29 @@ DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb dtb_depends += $(DTB:.dtb=.dts) endif
+# Pass the original device tree file through fdtgrep twice. The first pass +# removes any unwanted nodes (i.e. those which don't have the +# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second +# pass removes various unused properties from the remaining nodes. +# The output is typically a much smaller device tree file. +ifeq ($(CONFIG_TPL_BUILD),y) +fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl +else +fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl +endif +quiet_cmd_fdtgrep = FDTGREP $@ + cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ + -n /chosen -n /config -O dtb | \ + $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ + $(addprefix -P ,$(subst $",,$(CONFIG_OF_SPL_REMOVE_PROPS))) + +$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE + $(call if_changed,fdtgrep) + $(obj)/dt.dtb: $(DTB) FORCE $(call if_changed,shipped)
-targets += dt.dtb +targets += dt.dtb dt-spl.dtb
$(DTB): $(dtb_depends) ifeq ($(EXT_DTB),) @@ -42,14 +61,22 @@ endif arch-dtbs: $(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
-.SECONDARY: $(obj)/dt.dtb.S +.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S
+ +ifeq ($(CONFIG_SPL_BUILD),y) +obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o +# support "out-of-tree" build for dtb-spl +$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE + $(call if_changed_dep,as_o_S) +else obj-$(CONFIG_OF_EMBED) := dt.dtb.o +endif
-dtbs: $(obj)/dt.dtb +dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb @:
-clean-files := dt.dtb.S +clean-files := dt.dtb.S dt-spl.dtb.S
# Let clean descend into dts directories subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts diff --git a/include/common.h b/include/common.h index e14e1daa88..6e24545178 100644 --- a/include/common.h +++ b/include/common.h @@ -201,6 +201,7 @@ int last_stage_init(void); extern ulong monitor_flash_len; int mac_read_from_eeprom(void); extern u8 __dtb_dt_begin[]; /* embedded device tree blob */ +extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */ int set_cpu_clk_info(void); int mdm_init(void); int print_cpuinfo(void); diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 45f3fe7baf..0eb0b92261 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1266,7 +1266,11 @@ int fdtdec_setup(void) # endif # ifdef CONFIG_OF_EMBED /* Get a pointer to the FDT */ +# ifdef CONFIG_SPL_BUILD + gd->fdt_blob = __dtb_dt_spl_begin; +# else gd->fdt_blob = __dtb_dt_begin; +# endif # elif defined CONFIG_OF_SEPARATE # ifdef CONFIG_SPL_BUILD /* FDT is at end of BSS unless it is in a different memory region */ diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl index 49b27ac926..d3c176d775 100644 --- a/scripts/Makefile.spl +++ b/scripts/Makefile.spl @@ -238,24 +238,8 @@ $(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null;
-# Pass the original device tree file through fdtgrep twice. The first pass -# removes any unwanted nodes (i.e. those which don't have the -# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second -# pass removes various unused properties from the remaining nodes. -# The output is typically a much smaller device tree file. -ifeq ($(CONFIG_TPL_BUILD),y) -fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl -else -fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl -endif -quiet_cmd_fdtgrep = FDTGREP $@ - cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ - -n /chosen -n /config -O dtb | \ - $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ - $(addprefix -P ,$(subst $",,$(CONFIG_OF_SPL_REMOVE_PROPS))) - -$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE - $(call if_changed,fdtgrep) +$(obj)/$(SPL_BIN).dtb: dts/dt-spl.dtb FORCE + $(call if_changed,copy)
pythonpath = PYTHONPATH=tools