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Merge pull request #82 from jakkra/flash_loader_boot_selection
Support placing LVGL resourses in the external SPI Flash. Uploading u…
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@@ -16,8 +16,6 @@ build* | |
| # Built Visual Studio Code Extensions | ||
| *.vsix | ||
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| *.bin | ||
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| # Zephyr workspace | ||
| /.west | ||
| /bootloader | ||
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| @@ -0,0 +1,17 @@ | ||
| { | ||
| // See https://go.microsoft.com/fwlink/?LinkId=733558 | ||
| // for the documentation about the tasks.json format | ||
| "version": "2.0.0", | ||
| "tasks": [ | ||
| { | ||
| "label": "Upload Raw FS", | ||
| "type": "shell", | ||
| "command": "west upload_fs --type raw" | ||
| }, | ||
| { | ||
| "label": "Upload LittleFS", | ||
| "type": "shell", | ||
| "command": "west upload_fs --type lfs" | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,90 @@ | ||
| import os | ||
| import argparse | ||
| from struct import * | ||
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| MAX_FILE_NAME = 16 | ||
| FILE_TABLE_MAX_LEN = 1024 | ||
| """ | ||
| magic_number:uint32 | ||
| header_len:uint32 | ||
| total_length:uint32 | ||
| num_files:uint32 | ||
| filename[MAX_FILE_NAME + 1] | ||
| offset:uint32 | ||
| len:uint32 | ||
| filename[MAX_FILE_NAME + 1] | ||
| offset:uint32 | ||
| len:uint32 | ||
| ... | ||
| """ | ||
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| def create_custom_raw_fs_image(img_filename, source_dir, block_size=4096): | ||
| table = {} | ||
| offset = 0 | ||
| files_image = bytearray() | ||
| header_images = bytearray() | ||
| for root, dirs, files in os.walk(source_dir): | ||
| print(f"root {root} dirs {dirs} files {files}") | ||
| for filename in files: | ||
| path = os.path.join(root, filename) | ||
| relpath = os.path.relpath(path, start=source_dir) | ||
| print(f"Adding {path}") | ||
| with open(path, "rb") as infile: | ||
| files_image.extend(infile.read()) | ||
| table[filename] = {"offset": offset, "len": infile.tell()} | ||
| offset = offset + infile.tell() | ||
| print(table) | ||
| for name, data in table.items(): | ||
| if len(name) <= MAX_FILE_NAME: | ||
| header_images = header_images + pack( | ||
| f"<{MAX_FILE_NAME}sII", | ||
| bytes(name, "utf-8"), | ||
| data["offset"], | ||
| data["len"], | ||
| ) | ||
| else: | ||
| print("Filename to long, skipping", name, len(name)) | ||
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| # Insert dummy values as header length and total length so we can get the size of the header | ||
| fake_header = header_image = ( | ||
| pack("<IIII", 0x0A0A0A0A, len(table), 0, 0) + header_images | ||
| ) | ||
| print("header len", len(fake_header)) | ||
| real_header = ( | ||
| pack( | ||
| "<IIII", | ||
| 0x0A0A0A0A, | ||
| len(fake_header), | ||
| len(fake_header) + len(files_image), | ||
| len(table), | ||
| ) | ||
| + header_images | ||
| ) | ||
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| if len(header_images) > FILE_TABLE_MAX_LEN: | ||
| print( | ||
| "File table is to big, increase the size on target size", | ||
| FILE_TABLE_MAX_LEN, | ||
| "<", | ||
| len(header_images), | ||
| ) | ||
| exit(1) | ||
| # Add header length | ||
| with open(img_filename, "wb") as f: | ||
| f.write(real_header) | ||
| f.write(files_image) | ||
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| if __name__ == "__main__": | ||
| parser = argparse.ArgumentParser() | ||
| parser.add_argument("--img-filename", default="littlefs.img") | ||
| parser.add_argument("--block-size", type=int, default=4096) | ||
| parser.add_argument("source") | ||
| args = parser.parse_args() | ||
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| img_filename = args.img_filename | ||
| block_size = args.block_size | ||
| source_dir = args.source | ||
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| create_custom_raw_fs_image(img_filename, source_dir, block_size) |
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