From 6cdd177ca9092d1ee094dd3709e25d116e329ca0 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Mon, 28 Oct 2019 07:25:01 -0700
Subject: [PATCH] arm: mvebu: Avoid generating kwbimage.cfg in the source tree

At present some boards generate kwbimage.cfg in the source tree
during the build. This breaks buildman testing on some systems
where the source tree is read-only. Update makefile rules to
generate it in the build tree instead.

Note some other boards have the kwbimage.cfg file written in
advance, hence we need check if the file exists in the build
tree first, otherwise we fall back to one in the source tree.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 Makefile                             | 15 +++++++++++++--
 arch/arm/mach-mvebu/Makefile         |  4 ++--
 board/Marvell/db-88f6281-bp/Makefile |  4 ++--
 board/Marvell/db-xc3-24g4xg/Makefile |  4 ++--
 board/mikrotik/crs305-1g-4s/Makefile |  4 ++--
 5 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index e78b3179b1..61b94c5a6e 100644
--- a/Makefile
+++ b/Makefile
@@ -1276,10 +1276,21 @@ endif
 
 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 
-MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
+# Some boards have the kwbimage.cfg file written in advance, while some
+# other boards generate it on the fly during the build in the build tree.
+# Let's check if the file exists in the build tree first, otherwise we
+# fall back to use the one in the source tree.
+KWD_CONFIG_FILE = $(shell \
+	if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \
+		echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
+	else \
+		echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
+	fi)
+
+MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \
 	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 
-MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
+MKIMAGEFLAGS_u-boot-spl.kwb = -n $(KWD_CONFIG_FILE) \
 	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
 	$(if $(KEYDIR),-k $(KEYDIR))
 
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 8228a17972..b73952044d 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -58,10 +58,10 @@ KWB_REPLACE += SEC_FUSE_DUMP
 KWB_CFG_SEC_FUSE_DUMP = a38x
 endif
 
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	$(Q)sed -ne '$(foreach V,$(KWB_REPLACE),s/^#@$(V)/$(V) $(KWB_CFG_$(V))/;)p' \
-	<$< >$(dir $<)$(@F)
+	<$< >$(dir $@)$(@F)
 
 endif # CONFIG_SPL_BUILD
 obj-y	+= gpio.o
diff --git a/board/Marvell/db-88f6281-bp/Makefile b/board/Marvell/db-88f6281-bp/Makefile
index e6aa7e39a0..003e9f66d1 100644
--- a/board/Marvell/db-88f6281-bp/Makefile
+++ b/board/Marvell/db-88f6281-bp/Makefile
@@ -4,9 +4,9 @@ obj-y	:= db-88f6281-bp.o
 extra-y := kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg = -e "s/^\#@BOOT_FROM.*/BOOT_FROM	$(if $(CONFIG_CMD_NAND),nand,spi)/"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	$(call if_changed,sed)
diff --git a/board/Marvell/db-xc3-24g4xg/Makefile b/board/Marvell/db-xc3-24g4xg/Makefile
index 4dd57902d4..24e8200007 100644
--- a/board/Marvell/db-xc3-24g4xg/Makefile
+++ b/board/Marvell/db-xc3-24g4xg/Makefile
@@ -6,9 +6,9 @@ obj-y	:= db-xc3-24g4xg.o
 extra-y	:= kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg =-e "s|^BINARY.*|BINARY $(srctree)/$(@D)/binary.0 0000005b 00000068|"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	  $(call if_changed,sed)
diff --git a/board/mikrotik/crs305-1g-4s/Makefile b/board/mikrotik/crs305-1g-4s/Makefile
index 895331beb8..c03f534e48 100644
--- a/board/mikrotik/crs305-1g-4s/Makefile
+++ b/board/mikrotik/crs305-1g-4s/Makefile
@@ -6,9 +6,9 @@ obj-y	:= crs305-1g-4s.o
 extra-y	:= kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg =-e "s|^BINARY.*|BINARY $(srctree)/$(@D)/binary.0 0000005b 00000068|"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	  $(call if_changed,sed)
-- 
2.39.5