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>

5 files changed, 0 insertions, 21 deletions

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index fcc26a2..ec1b420 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -61,7 +61,6 @@ ifeq (,$(findstring arch/arm/lib/eabi_compat.o,$(PLATFORM_LIBS)))
 PLATFORM_LIBS += $(OBJTREE)/arch/arm/lib/eabi_compat.o
 endif
 endif
-LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
 
 # needed for relocation
 ifndef CONFIG_NAND_SPL
diff --git a/arch/nios2/config.mk b/arch/nios2/config.mk
index d241a96..e58ea24 100644
--- a/arch/nios2/config.mk
+++ b/arch/nios2/config.mk
@@ -29,7 +29,5 @@ STANDALONE_LOAD_ADDR ?= 0x02000000
 PLATFORM_CPPFLAGS += -DCONFIG_NIOS2 -D__NIOS2__
 PLATFORM_CPPFLAGS += -G0
 
-LDSCRIPT ?= $(SRCTREE)/$(CPUDIR)/u-boot.lds
-
 LDFLAGS_FINAL += --gc-sections
 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
diff --git a/arch/powerpc/config.mk b/arch/powerpc/config.mk
index e682071..a307154 100644
--- a/arch/powerpc/config.mk
+++ b/arch/powerpc/config.mk
@@ -29,17 +29,6 @@ PLATFORM_RELFLAGS += -fpic -mrelocatable -ffunction-sections -fdata-sections
 PLATFORM_CPPFLAGS += -DCONFIG_PPC -D__powerpc__
 PLATFORM_LDFLAGS  += -n
 
-ifdef CONFIG_SYS_LDSCRIPT
-# need to strip off double quotes
-LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
-else ifdef CONFIG_NAND_SPL
-LDSCRIPT := $(SRCTREE)/$(CONFIG_BOARDDIR)/u-boot-nand.lds
-else
-ifneq ($(wildcard $(SRCTREE)/arch/powerpc/cpu/$(CPU)/u-boot.lds),)
-LDSCRIPT := $(SRCTREE)/arch/powerpc/cpu/$(CPU)/u-boot.lds
-endif
-endif
-
 #
 # When cross-compiling on NetBSD, we have to define __PPC__ or else we
 # will pick up a va_list declaration that is incompatible with the
diff --git a/arch/sh/config.mk b/arch/sh/config.mk
index af57307..07ff8b9 100644
--- a/arch/sh/config.mk
+++ b/arch/sh/config.mk
@@ -31,9 +31,3 @@ endif
 PLATFORM_CPPFLAGS += -DCONFIG_SH -D__SH__
 PLATFORM_LDFLAGS += -e $(CONFIG_SYS_TEXT_BASE) --defsym reloc_dst=$(CONFIG_SYS_TEXT_BASE)
 LDFLAGS_FINAL = --gc-sections
-
-ifdef CONFIG_SYS_LDSCRIPT
-LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
-else
-LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
-endif
diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index e945201..ee23c9f 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -39,4 +39,3 @@ PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
 PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions
 
 LDFLAGS_FINAL += --gc-sections -pie
-LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds