Allow arch directory to contain .lds without requiring Makefile

The Makefile for a CPU is in arch/($ARCH)/cpu/$(CPU). We want to support
having an .lds file in arch/$(ARCH)/cpu without requiring an additional
Makefile there. This change makes it clear that we expect a Makefile in
the same directory as the link script except in this case.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/Makefile b/Makefile
index 01bf2b0..e2a5a84 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -174,6 +174,8 @@ include $(TOPDIR)/config.mk
 # that (or fail if absent).  Otherwise, search for a linker script in a
 # standard location.
 
+LDSCRIPT_MAKEFILE_DIR = $(dir $(LDSCRIPT))
+
 ifndef LDSCRIPT
        #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
        ifdef CONFIG_SYS_LDSCRIPT
@@ -182,6 +184,7 @@ ifndef LDSCRIPT
        endif
 endif
 
+# If there is no specified link script, we look in a number of places for it
 ifndef LDSCRIPT
        ifeq ($(CONFIG_NAND_U_BOOT),y)
                LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
@@ -195,6 +198,11 @@ ifndef LDSCRIPT
        ifeq ($(wildcard $(LDSCRIPT)),)
                LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
        endif
+       ifeq ($(wildcard $(LDSCRIPT)),)
+               LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
+               # We don't expect a Makefile here
+               LDSCRIPT_MAKEFILE_DIR =
+       endif
        ifeq ($(wildcard $(LDSCRIPT)),)
 $(error could not find linker script)
        endif
@@ -513,7 +521,7 @@ depend dep: $(TIMESTAMP_FILE) $(VERSION_FILE) \
                $(obj)include/autoconf.mk \
                $(obj)include/generated/generic-asm-offsets.h \
                $(obj)include/generated/asm-offsets.h
-               for dir in $(SUBDIRS) $(CPUDIR) $(dir $(LDSCRIPT)) ; do \
+               for dir in $(SUBDIRS) $(CPUDIR) $(LDSCRIPT_MAKEFILE_DIR) ; do \
                        $(MAKE) -C $$dir _depend ; done
 
 TAG_SUBDIRS = $(SUBDIRS)

diff --git a/spl/Makefile b/spl/Makefile
index 3262e22..680f6dd 100644 (file)
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -80,6 +80,9 @@ endif
 ifeq ($(wildcard $(LDSCRIPT)),)
        LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds
 endif
+ifeq ($(wildcard $(LDSCRIPT)),)
+       LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
+endif
 ifeq ($(wildcard $(LDSCRIPT)),)
 $(error could not find linker script)
 endif