arm: move C runtime setup code in crt0.S
Move all the C runtime setup code from every start.S
in arch/arm into arch/arm/lib/crt0.S. This covers
the code sequence from setting up the initial stack
to calling into board_init_r().
Also, rewrite the C runtime setup and make functions
board_init_*() and relocate_code() behave according to
normal C semantics (no jumping across the C stack any
more, etc).
Some SPL targets had to be touched because they use
start.S explicitly or for some reason; the relevant
maintainers and custodians are cc:ed.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
diff --git a/nand_spl/board/karo/tx25/Makefile b/nand_spl/board/karo/tx25/Makefile
index b27189d..82489d2 100644
--- a/nand_spl/board/karo/tx25/Makefile
+++ b/nand_spl/board/karo/tx25/Makefile
@@ -33,11 +33,12 @@
AFLAGS += -DCONFIG_SPL_BUILD -DCONFIG_NAND_SPL
CFLAGS += -DCONFIG_SPL_BUILD -DCONFIG_NAND_SPL
-SOBJS = start.o lowlevel_init.o
+SOBJS = start.o crt0.o lowlevel_init.o
COBJS = nand_boot_fsl_nfc.o
SRCS := $(SRCTREE)/nand_spl/nand_boot_fsl_nfc.c
SRCS += $(SRCTREE)/arch/arm/cpu/arm926ejs/start.S
+SRCS += $(SRCTREE)/arch/arm/lib/crt0.S
SRCS += $(SRCTREE)/board/karo/tx25/lowlevel_init.S
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
__OBJS := $(SOBJS) $(COBJS)
@@ -71,6 +72,9 @@
$(obj)%.o: $(SRCTREE)/arch/arm/cpu/arm926ejs/%.S
$(CC) $(AFLAGS) -c -o $@ $<
+$(obj)%.o: $(SRCTREE)/arch/arm/lib/%.S
+ $(CC) $(AFLAGS) -c -o $@ $<
+
$(obj)%.o: $(SRCTREE)/board/karo/tx25/%.S
$(CC) $(AFLAGS) -c -o $@ $<