#
# Addresses of things unless overridden
#

ifeq ($(strip ${CFG_UNCACHED}),1)
  CFG_TEXT_START ?= 0xFFF00000
  CFG_DATA_START ?= 0x00010000
  CFG_ROM_START  ?= 0xFFF00000
else
  CFG_TEXT_START ?= 0xFFF00000
  CFG_DATA_START ?= 0x00010000
  CFG_ROM_START  ?= 0xFFF00000
endif

#
# BOOTRAM mode (runs from ROM vector assuming ROM is writable)
# implies no relocation.
#

ifeq ($(strip ${CFG_BOOTRAM}),1)
  CFG_RELOC = 0
endif


#
# Basic compiler options and preprocessor flags
#

CFLAGS += -g -c  -ffreestanding 
CFLAGS += -O2 -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes 
CFLAGS += -fomit-frame-pointer -meabi

#
# Handle relocation options
#

ifeq ($(strip ${CFG_RELOC}),1)
  CFLAGS += -mrelocatable -DCFG_RELOC=1
  GENLDFLAGS += -DCFG_RELOC=1
  LDFLAGS += -Bstatic
endif

#
# Tools locations
#
TOOLPREFIX ?= ppc-elf-
GCC        ?= $(TOOLS)$(TOOLPREFIX)gcc
GCPP       ?= $(TOOLS)$(TOOLPREFIX)cpp
GLD        ?= $(TOOLS)$(TOOLPREFIX)ld
GAR        ?= $(TOOLS)$(TOOLPREFIX)ar
OBJDUMP    ?= $(TOOLS)$(TOOLPREFIX)objdump
OBJCOPY    ?= $(TOOLS)$(TOOLPREFIX)objcopy
RANLIB     ?= $(TOOLS)$(TOOLPREFIX)ranlib

LIBGCC = $(shell $(GCC) -print-libgcc-file-name)

#
# Check for 64-bit mode
#

ifeq ($(strip ${CFG_MLONG64}),1)
  CFLAGS += -mlong64 -D__long64
endif

#
# Determine parameters for the linker script, which is generated
# using the C preprocessor.
#
# Supported combinations:
#
#  CFG_RAMAPP   CFG_UNCACHED   CFG_RELOC   Description
#    Yes        YesOrNo        MustBeNo    CFE as a separate "application"
#    No         YesOrNo        Yes         CFE relocates to RAM as firmware
#    No         YesOrNo        No          CFE runs from flash as firmware
#

CFE_LDSCRIPT = ./cfe.lds
ZIPSTART_LDSCRIPT = ./zipstart.lds
ZIPSTART_LDSCRIPT_TEMPLATE = ${ARCH_SRC}/zipstart_ldscript.template

CFE_LDFLAGS += -g --script $(CFE_LDSCRIPT)
CFE_LDSCRIPT_TEMPLATE = ${ARCH_SRC}/cfe_ldscript.template

ifeq ($(strip ${CFG_UNCACHED}),1)
  GENLDFLAGS += -DCFG_UNCACHED=1
else
  GENLDFLAGS += -DCFG_UNCACHED=0
endif

ifeq ($(strip ${CFG_RAMAPP}),1)
   GENLDFLAGS += -DCFG_RAMAPP=1
   GENLDFLAGS += -DCFG_UNCACHED=0
endif

#
# Add GENLDFLAGS to CFLAGS (we need this stuff in the C code as well)
#

CFLAGS += ${GENLDFLAGS}

#
# Determine target endianness
#

# ifeq ($(strip ${CFG_LITTLE}),1)
#   ENDIAN = -EL
#   CFLAGS += -EL
#   LDFLAGS += -EL
# else
#   ENDIAN = -EB
#   CFLAGS += -EB
#   LDFLAGS += -EB
# endif

#
# Add the text/data/ROM addresses to the GENLDFLAGS so they
# will make it into the linker script.
#

GENLDFLAGS += -DCFE_ROM_START=${CFG_ROM_START} 
GENLDFLAGS += -DCFE_TEXT_START=${CFG_TEXT_START} 
GENLDFLAGS += -DCFE_DATA_START=${CFG_DATA_START}