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[/] [ion/] [trunk/] [src/] [sdboot/] [makefile] - Rev 251
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#-- Bring toolchain config parameters from the common makefile
include ../common/makefile
# Link script to be used: run from BRAM, use upper chunk of RAM, leaving
# the memory from 0x0 onwards free to be initialized with the binary file
# read from the SD card.
LINK_SCRIPT = $(SRC_DIR)/common/boot.lds
#-- Configure the application --------------------------------------------------
# Simulation length in cycles; long enough to let the program run to completion.
SIM_LENGTH = 90000
# FPGA Block RAM parameters (size in words)
# 16K is far too much BRAM; in a real world the bootloader would have to be
# squeezed into a smaller space or placed in flash. For our purposes this
# will do.
BRAM_START = 0xbfc00000
CODE_BRAM_SIZE = 4096
# External RAM parameters (size in words)
# We're using the top 16K of the main 512K RAM area; the rest will be filled
# with the code read from disk.
XRAM_SIZE = 4096
XRAM_START = 0x0007BFFC
# Here's where the FatFs source lives
FATFS = ../common/fatfs
# 1.- Put the code in internal BRAM and the data in external SRAM.
# 2.- Do not use any of the standard libraries and use libsoc instead.
LFLAGS = -T$(LINK_SCRIPT) -L $(LIB_PATH) \
-Ttext $(BRAM_START) -Tdata $(XRAM_START) \
-nodefaultlibs -nostdlib -ereset -I elf32-big
CFLAGS = -O2 -Wall -c -s -fno-builtin -nodefaultlibs -nostdlib \
-msoft-float -mips1 -G0 -I $(FATFS)
AFLAGS = --defsym XRAM_BASE=$(XRAM_START)
OBJS = bootstrap.o opcode_emu.o c_startup.o sdboot.o \
$(FATFS)/mmcbb.o $(FATFS)/ff.o
#-- Targets & rules ------------------------------------------------------------
sdboot: sdboot.code
@# This comment prevents use of implicit rule so our rules are used instead.
@# This will save us a few harmless linker warnings.
sdboot.axf: $(OBJS)
$(LD) $(LFLAGS) -Map sdboot.map -s -N -o sdboot.axf $(OBJS) -lsoc
-@$(DUMP) -m mips --disassemble sdboot.axf > sdboot.lst
sdboot.code: sdboot.axf
# Extract object code to be placed in code space
$(COPY) -I elf32-big -O binary sdboot.axf sdboot.code
# Rules for the assembly source files
bootstrap.o: $(SRC_DIR)/common/bootstrap.s
$(AS) $(AFLAGS) -o bootstrap.o $(SRC_DIR)/common/bootstrap.s
c_startup.o: $(SRC_DIR)/common/c_startup.s
$(AS) $(AFLAGS) -o c_startup.o $(SRC_DIR)/common/c_startup.s
opcode_emu.o: $(SRC_DIR)/common/opcode_emu.s
$(AS) $(AFLAGS) -o opcode_emu.o $(SRC_DIR)/common/opcode_emu.s
#-- Let's make some implicit rules explicit for clarity (well, 'clarity')
%.o: %.c
$(CC) $(CFLAGS_MAIN) $< -o $@
#-- Targets that build the synthesizable vhdl; meant for direct invocation -----
#-- Create VHDL package with data and parameters for simulation
sim: sdboot demo
$(VHDL_OBJ_PKG) --project="SD Bootloader" \
--package sim_params_pkg \
--bin sdboot.code --name obj_code --bram_size $(CODE_BRAM_SIZE) \
--name prom_init --flash_size 0 \
--output $(TB_DIR)/sim_params_pkg.vhdl \
-s $(SIM_LENGTH) --log_trigger=0xbfc00000 \
#-- Create VHDL package with data and parameters for simulation and syntesis
demo: sdboot
$(VHDL_OBJ_PKG) --project="SD Bootloader" \
--package obj_code_pkg \
--bin sdboot.code --name obj_code --bram_size $(CODE_BRAM_SIZE) \
--output $(DEMO_DIR)/../SoC/bootstrap_code_pkg.vhdl
#-- And now the usual housekeeping stuff ---------------------------------------
.PHONY: clean
clean:
-$(RM) *.o *.obj *.map *.lst *.hex *.exe *.axf *.code *.data *.bin
-$(RM) $(FATFS)/*.o
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