URL
https://opencores.org/ocsvn/ion/ion/trunk
Subversion Repositories ion
[/] [ion/] [trunk/] [src/] [common/] [makefile] - Rev 12
Go to most recent revision | Compare with Previous | Blame | View Log
#-------------------------------------------------------------------------------
# This makefile does not contain any targets, only definitions used by the
# makefiles of all the code samples.
# It is meant to be included and not used standalone.
#-------------------------------------------------------------------------------
# KNOWN PROBLEMS AND WORKAROUNDS
#
# 1.- LINK PROBLEM IF FLAG '-G0' NOT USED
# If flag '-G0' is not used on gcc, linker fails with 'relocation
# truncated to fit: R_MIPS_GPREL16' error message.
# This only happens when you use global or static veriables, initialized
# or not.
# (See explaination in the project docs about $gp indexed addressing in
# MIPS architectures and the -G0 flag).
#
# SUSPECTED CAUSE:
# I'm sure there is something wrong with my linker script.
# With the default link scripts this does not happen. Yet we need to use
# a script so that we can split code and data (including read-only) to
# different sections (and later to different ram blocks).
#
# WORKAROUND:
# Use -G0 flag so that _gp indexing is disabled. There is a performance
# hit, though. In effect we're telling the compiler to NOT use $gp for
# indexed access to any global variables.
# This is only necessary for the 'bare' target (no external ram and no
# cache) and will have to be fixed for regular targets (by using a
# standard link script or fixing mine).
#-------------------------------------------------------------------------------
# SYSTEM PARAMETERS
#
# All you can define here is the size of the VHDL RAM tables.
# Some other system parameters are defined in the linker script (ion*.lds).
#-------------------------------------------------------------------------------
### Toolchain config ###########################################################
ifeq ($(LANG),)
#**** Customize for Windows/Cygwin
# Some common file commands (Cygwin/sh version, use your own)
CP = cp
RM = RM
DWIN32 = -DWIN32
LINUX_PWD =
# MIPS GCC cross-toolchain: CodeSourcery -- replace with your own
BIN_MIPS = C:/desarrollo/SourceryGpp/bin
GCC_MIPS = $(BIN_MIPS)/mips-sde-elf-gcc.exe $(CFLAGS)
AS_MIPS = $(BIN_MIPS)/mips-sde-elf-as
LD_MIPS = $(BIN_MIPS)/mips-sde-elf-ld
DUMP_MIPS = $(BIN_MIPS)/mips-sde-elf-objdump
COPY_MIPS = $(BIN_MIPS)/mips-sde-elf-objcopy
TO_VHDL = python ../bin2hdl.py
else
#**** Customize for Linux
# MIPS GCC cross-toolchain: BuildRoot toolchain in my home directory -- replace with your own
# NOTE: we will not use gcc builtin functions or libc
BIN_MIPS = /home/jaruiz/desarrollo/uClinux/MIPS/buildroot/buildroot-2010.11/output/staging/usr/bin
GCC_MIPS = $(BIN_MIPS)/mips-unknown-linux-uclibc-gcc $(CFLAGS)
AS_MIPS = $(BIN_MIPS)/mips-unknown-linux-uclibc-as
LD_MIPS = $(BIN_MIPS)/mips-unknown-linux-uclibc-ld
DUMP_MIPS = $(BIN_MIPS)/mips-unknown-linux-uclibc-objdump
COPY_MIPS = $(BIN_MIPS)/mips-unknown-linux-uclibc-objcopy
TO_VHDL = python ../bin2hdl.py
endif
### System parameters ##########################################################
# Default size of code BRAM in 32-bit words
CODE_SIZE = 1024
# Default size of data BRAM in 32-bit words
DATA_SIZE = 256
### Build options ##############################################################
# Don't use gcc builtin functions, and try to target MIPS-I architecture
# (See comment above about -G0 flag)
CFLAGS = -O2 -Wall -c -s -fno-builtin -mips1 -G0
# Use project 'bare cpu' linker script and build elf-bigendian object file
LFLAGS = -T../ion_noxram.lds -I elf32-big -eentry
# Pass BRAM sizes to VHDL conversion script
VHDL_FLAGS = --code_size $(CODE_SIZE) --data_size $(DATA_SIZE)
### Project directories ########################################################
# VHDL test bench directory, where VHDL output files will be created
TB_DIR = ../../vhdl/tb
# VHDL DE-1 board demo root directory, for vhdl output
DEMO_DIR = ../../vhdl/demo
# Root test code source directory, where python script and vhdl templates are
SRC_DIR = ..
Go to most recent revision | Compare with Previous | Blame | View Log