[PATCH v4 04/20] arm: fdt: Ensure that an embedded fdt is word-aligned
From: Simon Glass <hidden>
Date: 2012-01-12 04:32:53
Also in:
u-boot
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
By putting the fdt blob into a distinctive area we can ensure that it appears at the start of the data section and is word-aligned. Note: It does not seem to be possible to get objcopy to honour its --section-alignment flag, which would otherwise provide an easier fix for this problem. Signed-off-by: Simon Glass <redacted> --- arch/arm/cpu/armv7/u-boot.lds | 5 +++++ dts/Makefile | 2 +- 2 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/arch/arm/cpu/armv7/u-boot.lds b/arch/arm/cpu/armv7/u-boot.lds
index 40ecf78..793e51b 100644
--- a/arch/arm/cpu/armv7/u-boot.lds
+++ b/arch/arm/cpu/armv7/u-boot.lds@@ -43,6 +43,11 @@ SECTIONS . = ALIGN(4); .data : { + /* + * Sadly objcopy seems to ignore --section-alignment. + * Put any embedded device tree first so it is aligned. + */ + *(.dts.data) *(.data) }
diff --git a/dts/Makefile b/dts/Makefile
index 5792afd..83547d4 100644
--- a/dts/Makefile
+++ b/dts/Makefile@@ -79,7 +79,7 @@ $(obj)dt.o: $(DT_BIN) \ cd $(dir ${DT_BIN}) && \ $(OBJCOPY) -I binary -O $${oformat} -B $${oarch} \ - $(notdir ${DT_BIN}) $@ + --prefix-sections=.dts $(notdir ${DT_BIN}) $@ rm $(DT_BIN) OBJS-$(CONFIG_OF_EMBED) := dt.o
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1.7.7.3