circuitpython/ports/espressif/tools/build_memory_info.py

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#!/usr/bin/env python3
# SPDX-FileCopyrightText: Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
# SPDX-FileCopyrightText: 2014 MicroPython & CircuitPython contributors (https://github.com/adafruit/circuitpython/graphs/contributors)
#
# SPDX-License-Identifier: MIT
import csv
import os
import re
import sys
from elftools.elf.elffile import ELFFile
print()
internal_memory = {
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"esp32": [
# Name, Start, Length
("RTC Fast Memory", (0x3FF8_0000, 0x400C_0000), 8 * 1024),
("RTC Slow Memory", (0x5000_0000,), 8 * 1024),
# First 64kB of Internal SRAM 0 can be configured as cached, and starts at 0x4007_0000
("Internal SRAM 0", (0x4008_0000,), 128 * 1024),
("Internal SRAM 1", (0x3FFE_0000, 0x400A_0000), 128 * 1024),
("Internal SRAM 2", (0x3FFA_E000,), 200 * 1024),
],
"esp32s2": [
# Name, Start, Length
("RTC Fast Memory", (0x3FF9_E000, 0x4007_0000), 8 * 1024),
("RTC Slow Memory", (0x5000_0000,), 8 * 1024),
("Internal SRAM 0", (0x3FFB_0000, 0x4002_0000), 32 * 1024),
("Internal SRAM 1", (0x3FFB_8000, 0x4002_8000), 288 * 1024),
],
"esp32s3": [
# Name, Start, Length
("RTC Fast Memory", (0x600F_E000,), 8 * 1024),
("RTC Slow Memory", (0x5000_0000,), 8 * 1024),
("Internal SRAM 0", (0x4037_0000,), 32 * 1024),
("Internal SRAM 1", (0x3FC8_0000, 0x4037_8000), 416 * 1024),
("Internal SRAM 2", (0x3FCF_0000,), 64 * 1024),
],
"esp32c3": [
# Name, Start, Length
("RTC Fast Memory", (0x5000_0000,), 8 * 1024),
("Internal SRAM 0", (0x4037_C000,), 16 * 1024),
("Internal SRAM 1", (0x3FC8_0000, 0x4038_0000), 384 * 1024),
],
}
def align(n, m):
return m * ((n + m - 1) // m)
def find_region(start_address):
for name, starts, length in internal_memory[target]:
for mem_start in starts:
mem_end = mem_start + length
if mem_start <= start_address < mem_end:
return (name, mem_start + length)
target = None
# This file is the sdkconfig
with open(sys.argv[2], "r") as f:
for line in f:
line = line.strip()
if line.startswith("CONFIG_IDF_TARGET="):
target = line.split('"')[1]
elif line.startswith("CONFIG_PARTITION_TABLE_FILENAME"):
partitions_file = line.split('"')[1]
with open(partitions_file, "r") as f:
ota = None
app = None
for partition in csv.reader(f):
if partition[0][0] == "#":
continue
subtype = partition[2].strip()
if subtype == "factory":
app = partition[4].strip()
elif subtype == "ota_0":
ota = partition[4].strip()
size = app if ota is None else ota
if size[-1] not in ("k", "K"):
raise RuntimeError("Unhandled partition size suffix")
firmware_region = int(size[:-1]) * 1024
regions = dict((name, 0) for name, _, _ in internal_memory[target])
# This file is the elf
with open(sys.argv[1], "rb") as stream:
elffile = ELFFile(stream)
for section in elffile.iter_sections():
start = section["sh_addr"]
size = section["sh_size"]
offset = section["sh_offset"]
if not size or not start:
continue
# This handles sections that span two memory regions, not more than that.
# print(start, size, offset, section.name)
region = find_region(start)
if region is None:
continue
name, region_end = region
region_size = min(size, region_end - start)
regions[name] += region_size
# print("# putting %s in %s (start=0x%x, size=%d)" % (section.name, name, start, region_size))
if region_size < size:
name, _ = find_region(region_end)
remaining_size = size - region_size
regions[name] += remaining_size
# print("# putting %s in %s (start=0x%x, size=%d)" % (section.name, name, region_end, remaining_size))
# This file is the bin
used_flash = os.stat(sys.argv[3]).st_size
free_flash = firmware_region - used_flash
print(
"{:7} bytes used, {:7} bytes free in flash firmware space out of {} bytes ({}kB).".format(
used_flash, free_flash, firmware_region, firmware_region / 1024
)
)
for name, mem_start, length in internal_memory[target]:
if name in regions:
print(
"{:7} bytes used, {:7} bytes free in '{}' out of {} bytes ({}kB).".format(
regions[name], length - regions[name], name, length, length / 1024
)
)
print()
# Check that we have free flash space. GCC doesn't fail when the text + data
# sections don't fit in FLASH. It only counts data in RAM.
if free_flash < 0:
print("Too little flash!!!")
print()
sys.exit(-1)