release/src-rt-6.x.4708/cfe/cfe/arch/mips/common/src/tools.mk

   1 #
   2 # Addresses of things unless overridden
   3 #
   4
   5 ifeq ($(strip ${CFG_UNCACHED}),1)
   6   CFG_TEXT_START ?= 0xBFC00000
   7   CFG_DATA_START ?= 0xA1F00000
   8   CFG_ROM_START  ?= 0xBFC00000
   9 else
  10   CFG_TEXT_START ?= 0x9FC00000
  11   CFG_DATA_START ?= 0x81F00000
  12   CFG_ROM_START  ?= 0xBFC00000
  13 endif
  14
  15 #
  16 # BOOTRAM mode (runs from ROM vector assuming ROM is writable)
  17 # implies no relocation.
  18 #
  19
  20 ifeq ($(strip ${CFG_BOOTRAM}),1)
  21   CFG_RELOC = 0
  22 endif
  23
  24
  25 #
  26 # Basic compiler options and preprocessor flags
  27 #
  28
  29 CFLAGS += -gdwarf-2 -c -ffreestanding
  30 CFLAGS += -Os -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
  31
  32 #
  33 # Tools locations
  34 #
  35 TOOLPREFIX ?= sb1-elf-
  36 GCC        ?= $(TOOLS)$(TOOLPREFIX)gcc
  37 GCPP       ?= $(TOOLS)$(TOOLPREFIX)cpp
  38 GLD        ?= $(TOOLS)$(TOOLPREFIX)ld
  39 GAR        ?= $(TOOLS)$(TOOLPREFIX)ar
  40 OBJDUMP    ?= $(TOOLS)$(TOOLPREFIX)objdump
  41 OBJCOPY    ?= $(TOOLS)$(TOOLPREFIX)objcopy
  42 RANLIB     ?= $(TOOLS)$(TOOLPREFIX)ranlib
  43
  44 #
  45 # Check for 64-bit mode
  46 #
  47
  48 ifeq ($(strip ${CFG_MLONG64}),1)
  49   CFLAGS += -mlong64 -D__long64
  50 endif
  51
  52 #
  53 # Determine parameters for the linker script, which is generated
  54 # using the C preprocessor.
  55 #
  56 # Supported combinations:
  57 #
  58 #  CFG_RAMAPP   CFG_UNCACHED   CFG_RELOC   Description
  59 #    Yes        YesOrNo        MustBeNo    CFE as a separate "application"
  60 #    No         YesOrNo        Yes         CFE relocates to RAM as firmware
  61 #    No         YesOrNo        No          CFE runs from flash as firmware
  62 #
  63
  64 LDSCRIPT = ./cfe.lds
  65 LDFLAGS += -g --script $(LDSCRIPT)
  66 LDSCRIPT_TEMPLATE = ${ARCH_SRC}/cfe_ldscript.template
  67
  68 ifeq ($(strip ${CFG_UNCACHED}),1)
  69   GENLDFLAGS += -DCFG_RUNFROMKSEG0=0
  70 else
  71   GENLDFLAGS += -DCFG_RUNFROMKSEG0=1
  72 endif
  73
  74 ifeq ($(strip ${CFG_RAMAPP}),1)
  75    GENLDFLAGS += -DCFG_RAMAPP=1
  76    GENLDFLAGS += -DCFG_RUNFROMKSEG0=1
  77 else
  78  ifeq ($(strip ${CFG_RELOC}),0)
  79     ifeq ($(strip ${CFG_BOOTRAM}),1)
  80       GENLDFLAGS += -DCFG_BOOTRAM=1
  81     else
  82       GENLDFLAGS += -DCFG_BOOTRAM=0
  83     endif
  84   else
  85     CFLAGS += -membedded-pic -mlong-calls
  86     GENLDFLAGS += -DCFG_EMBEDDED_PIC=1
  87     LDFLAGS +=  --embedded-relocs
  88   endif
  89 endif
  90
  91 #
  92 # Add GENLDFLAGS to CFLAGS (we need this stuff in the C code as well)
  93 #
  94
  95 CFLAGS += ${GENLDFLAGS}
  96
  97 #
  98 # Determine target endianness
  99 #
 100
 101 ifeq ($(strip ${CFG_LITTLE}),1)
 102   ENDIAN = -EL
 103 else
 104   ENDIAN = -EB
 105   CFLAGS += -EB
 106   LDFLAGS += -EB
 107 endif
 108
 109 #
 110 # Add the text/data/ROM addresses to the GENLDFLAGS so they
 111 # will make it into the linker script.
 112 #
 113
 114 GENLDFLAGS += -DCFE_ROM_START=${CFG_ROM_START}
 115 GENLDFLAGS += -DCFE_TEXT_START=${CFG_TEXT_START}
 116 GENLDFLAGS += -DCFE_DATA_START=${CFG_DATA_START}
 117 GENLDFLAGS += -DCFG_XIP=${CFG_XIP}