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-rw-r--r--scripts/Makefile.spl28
1 files changed, 28 insertions, 0 deletions
diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index fd572f4..bcc7ca2 100644
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -151,6 +151,8 @@ boot.bin: $(obj)/u-boot-spl.bin
ALL-y += $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN).cfg
+ALL-$(CONFIG_OF_SEPARATE) += $(obj)/$(SPL_BIN)-pad.bin $(obj)/$(SPL_BIN)-dtb.bin
+
ifdef CONFIG_SAMSUNG
ALL-y += $(obj)/$(BOARD)-spl.bin
endif
@@ -165,6 +167,32 @@ endif
all: $(ALL-y)
+quiet_cmd_cat = CAT $@
+cmd_cat = cat $(filter-out $(PHONY), $^) > $@
+
+$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN)-pad.bin \
+ $(obj)/$(SPL_BIN).dtb FORCE
+ $(call if_changed,cat)
+
+# Create a file that pads from the end of u-boot-spl.bin to bss_end
+$(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.
+quiet_cmd_fdtgrep = FDTGREP $@
+ cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \
+ -n /chosen -O dtb | \
+ $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
+ $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
+
+$(obj)/$(SPL_BIN).dtb: dts/dt.dtb
+ $(call cmd,fdtgrep)
+
quiet_cmd_cpp_cfg = CFG $@
cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
-DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<