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authorScott Wood <scottwood@freescale.com>2011-04-06 13:31:37 +0000
committerWolfgang Denk <wd@denx.de>2011-04-30 00:59:47 +0200
commit83b7e2a7f2f9cf7651e623c75aa9a27ad6488fb3 (patch)
treeded021bb78977fe1a1686fb8868535bc7a509406 /config.mk
parentec9a3740415ba613d0d84890fdb426e576a7eeef (diff)
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Handle most LDSCRIPT setting centrally
Currently, some linker scripts are found by common code in config.mk. Some are found using CONFIG_SYS_LDSCRIPT, but the code for that is sometimes in arch config.mk and sometimes in board config.mk. Some are found using an arch-specific rule for looking in CPUDIR, etc. Further, the powerpc config.mk rule relied on CONFIG_NAND_SPL when it really wanted CONFIG_NAND_U_BOOT -- which covered up the fact that not all NAND_U_BOOT builds actually wanted CPUDIR/u-boot-nand.lds. Replace all of this -- except for a handful of boards that are actually selecting a linker script in a unique way -- with centralized ldscript finding. If board code specifies LDSCRIPT, that will be used. Otherwise, if CONFIG_SYS_LDSCRIPT is specified, that will be used. If neither of these are specified, then the central config.mk will check for the existence of the following, in order: $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT) $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT) $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds $(TOPDIR)/$(CPUDIR)/u-boot.lds Some boards (sc3, cm5200, munices) provided their own u-boot.lds that were dead code, because they were overridden by a CPUDIR u-boot.lds under the old powerpc rules. These boards' own u-boot.lds have bitrotted and no longer work -- these lds files have been removed. Signed-off-by: Scott Wood <scottwood@freescale.com> Tested-by: Graeme Russ <graeme.russ@gmail.com>
Diffstat (limited to 'config.mk')
-rw-r--r--config.mk33
1 files changed, 28 insertions, 5 deletions
diff --git a/config.mk b/config.mk
index fa46ff1..7ce554e 100644
--- a/config.mk
+++ b/config.mk
@@ -153,14 +153,37 @@ endif
RELFLAGS= $(PLATFORM_RELFLAGS)
DBGFLAGS= -g # -DDEBUG
OPTFLAGS= -Os #-fomit-frame-pointer
+
+# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
+# that (or fail if absent). Otherwise, search for a linker script in a
+# standard location.
+
ifndef LDSCRIPT
-#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
-ifeq ($(CONFIG_NAND_U_BOOT),y)
-LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-else
-LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
+ #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
+ ifdef CONFIG_SYS_LDSCRIPT
+ # need to strip off double quotes
+ LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
+ endif
endif
+
+ifndef LDSCRIPT
+ ifeq ($(CONFIG_NAND_U_BOOT),y)
+ LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
+ ifeq ($(wildcard $(LDSCRIPT)),)
+ LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
+ endif
+ endif
+ ifeq ($(wildcard $(LDSCRIPT)),)
+ LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
+ endif
+ ifeq ($(wildcard $(LDSCRIPT)),)
+ LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
+ endif
+ ifeq ($(wildcard $(LDSCRIPT)),)
+$(error could not find linker script)
+ endif
endif
+
OBJCFLAGS += --gap-fill=0xff
gccincdir := $(shell $(CC) -print-file-name=include)