bios: print memory usage

Print memory usage during the compilation of bios.elf.
This commit is contained in:
Franck Jullien 2020-04-25 23:22:38 +02:00
parent 96e7e6e89a
commit 3892d7a90a
2 changed files with 64 additions and 0 deletions

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@ -13,6 +13,7 @@ endif
OBJECTS=isr.o sdram.o sdcard.o main.o boot-helper-$(CPU).o boot.o
all: bios.bin
$(PYTHON) -m litex.soc.software.memusage bios.elf $(CURDIR)/../include/generated/regions.ld $(TRIPLE)
%.bin: %.elf
$(OBJCOPY) -O binary $< $@

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@ -0,0 +1,63 @@
#!/usr/bin/env python3
# This file is Copyright (c) 2020 Franck Jullien <franck.jullien@gmail.com>
# License: BSD
import subprocess
import argparse
def print_usage(bios,regions, triple):
rom_usage = 0
ram_usage = 0
readelf = triple + "-readelf"
result = subprocess.run([readelf, '-e', '-W', bios], stdout=subprocess.PIPE)
result = result.stdout.decode('utf-8')
result = result.split('\n')
with open(regions, "r") as regfile:
for line in regfile:
if line == 0:
break
if 'rom' in line:
rom_size = int(line.split(' ')[-1], 16)
if 'sram' in line:
ram_size = int(line.split(' ')[-1], 16)
for line in result:
if '.text' in line:
if 'PROGBITS' in line:
tokens = list(filter(None,line.split(' ')))
rom_usage += int(tokens[6], 16)
if '.rodata' in line:
if 'PROGBITS' in line:
tokens = list(filter(None,line.split(' ')))
rom_usage += int(tokens[6], 16)
if '.data' in line:
if 'PROGBITS' in line:
tokens = list(filter(None,line.split(' ')))
rom_usage += int(tokens[6], 16)
if '.commands' in line:
if 'PROGBITS' in line:
tokens = list(filter(None,line.split(' ')))
rom_usage += int(tokens[6], 16)
if '.bss' in line:
if 'NOBITS' in line:
tokens = list(filter(None,line.split(' ')))
ram_usage += int(tokens[6], 16)
print("\nROM usage: {:.2f}KiB \t({:.2f}%)".format(rom_usage / 1024.0, rom_usage / rom_size * 100.0))
print("RAM usage: {:.2f}KiB \t({:.2f}%)\n".format(ram_usage / 1024.0, ram_usage / ram_size * 100.0))
def main():
parser = argparse.ArgumentParser(description="Print bios memory usage")
parser.add_argument("input", help="input file")
parser.add_argument("regions", help="regions definitions")
parser.add_argument("triple", help="toolchain triple")
args = parser.parse_args()
print_usage(args.input, args.regions, args.triple)
if __name__ == "__main__":
main()