mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-03 04:53:01 +00:00
7adff462e7
* K_APP_DMEM_SECTION/K_MEM_BMEM_SECTION macros now exist to specifically define the name of the sections for data and bss respectively. * All boards now use the gen_app_partitions.py script, the padding hacks for non-power-of-two arches didn't work right in all cases. Linker scripts have been updated. * The defined k_mem_partition is now completely initialized at build time. The region data structures now only exist to zero BSS. Based on some work submitted by Adithya Baglody <adithya.baglody@intel.com> Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
120 lines
3.7 KiB
Python
120 lines
3.7 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2018 Intel Corporation
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#
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# SPDX-License-Identifier: Apache-2.0
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import sys
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import argparse
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import os
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import re
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import string
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from elf_helper import ElfHelper
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from elftools.elf.elffile import ELFFile
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# This script will create sections and linker variables to place the
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# application shared memory partitions.
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# these are later read by the macros defined in app_memdomain.h for
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# initialization purpose when APP_SHARED_MEM is enabled.
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print_template = """
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/* Auto generated code do not modify */
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SMEM_PARTITION_ALIGN(data_smem_{0}_bss_end - data_smem_{0}_start);
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data_smem_{0}_start = .;
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KEEP(*(data_smem_{0}_data))
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data_smem_{0}_bss_start = .;
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KEEP(*(data_smem_{0}_bss))
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SMEM_PARTITION_ALIGN(data_smem_{0}_bss_end - data_smem_{0}_start);
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data_smem_{0}_bss_end = .;
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data_smem_{0}_end = .;
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"""
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linker_start_seq = """
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SECTION_PROLOGUE(_APP_SMEM_SECTION_NAME, (OPTIONAL),)
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{
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APP_SHARED_ALIGN;
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_app_smem_start = .;
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"""
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linker_end_seq = """
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APP_SHARED_ALIGN;
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_app_smem_end = .;
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} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
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"""
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size_cal_string = """
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data_smem_{0}_size = data_smem_{0}_end - data_smem_{0}_start;
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data_smem_{0}_bss_size = data_smem_{0}_bss_end - data_smem_{0}_bss_start;
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"""
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section_regex = re.compile(r'data_smem_([A-Za-z0-9_]*)_(data|bss)')
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def find_partitions(filename, full_list_of_partitions, partitions_source_file):
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with open(filename, 'rb') as f:
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full_lib = ELFFile( f)
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if (not full_lib):
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print("Error parsing file: ",filename)
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os.exit(1)
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sections = [x for x in full_lib.iter_sections()]
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for section in sections:
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m = section_regex.match(section.name)
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if not m:
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continue
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partition_name = m.groups()[0]
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if partition_name not in full_list_of_partitions:
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full_list_of_partitions.append(partition_name)
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if args.verbose:
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partitions_source_file.update({partition_name: filename})
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return (full_list_of_partitions, partitions_source_file)
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def generate_final_linker(linker_file, full_list_of_partitions):
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string = linker_start_seq
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size_string = ''
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for partition in full_list_of_partitions:
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string += print_template.format(partition)
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size_string += size_cal_string.format(partition)
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string += linker_end_seq
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string += size_string
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with open(linker_file, "w") as fw:
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fw.write(string)
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def parse_args():
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global args
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parser = argparse.ArgumentParser(
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description=__doc__,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument("-d", "--directory", required=True,
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help="Root build directory")
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parser.add_argument("-o", "--output", required=False,
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help="Output ld file")
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parser.add_argument("-v", "--verbose", action="count", default =0,
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help="Verbose Output")
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args = parser.parse_args()
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def main():
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parse_args()
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root_directory = args.directory
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linker_file = args.output
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full_list_of_partitions = []
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partitions_source_file= {}
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for dirpath, dirs, files in os.walk(root_directory):
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for filename in files:
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if re.match(".*\.obj$",filename):
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fullname = os.path.join(dirpath, filename)
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full_list_of_partitions, partitions_source_file = find_partitions(fullname, full_list_of_partitions, partitions_source_file)
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generate_final_linker(linker_file, full_list_of_partitions)
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if args.verbose:
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print("Partitions retrieved:")
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for key in full_list_of_partitions:
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print(" %s: %s\n", key, partitions_source_file[key])
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if __name__ == '__main__':
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main()
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