LadybirdBrowser/ladybird
1
1
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-12-29 14:14:45 +03:00
Code Issues Packages Projects Releases Wiki Activity

Utilities: Add fdtdump for dumping OpenFirmware Device Trees

Browse Source 
Use the new LibDeviceTree to dump the contents of the device tree blob
(Flattened Device Tree) file passed on the command line.
This commit is contained in:
Andrew Kaster 2021-10-17 19:10:47 -06:00 committed by Brian Gianforcaro
parent 644928314a
commit 259ef76504
Notes: sideshowbarker 2024-07-18 02:03:58 +09:00 
Author: https://github.com/ADKaster
Commit: https://github.com/SerenityOS/serenity/commit/259ef765043
Pull-request: https://github.com/SerenityOS/serenity/pull/10526
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/bgianfo ✅
Reviewed-by: https://github.com/linusg
2 changed files with 45 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Userland/Utilities/CMakeLists.txt
View File

@ -62,6 +62,7 @@ target_link_libraries(copy LibGUI)
target_link_libraries(diff LibDiff)
target_link_libraries(disasm LibX86)
target_link_libraries(expr LibRegex)
target_link_libraries(fdtdump LibDeviceTree)
target_link_libraries(file LibGfx LibIPC LibCompress)
target_link_libraries(functrace LibDebug LibX86)
target_link_libraries(gml-format LibGUI)

44
Userland/Utilities/fdtdump.cpp Normal file
View File

@ -0,0 +1,44 @@
/*
* Copyright (c) 2021, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/MappedFile.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibDeviceTree/Validation.h>
#include <serenity.h>
int main(int argc, char* argv[])
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
String filename;
Core::ArgsParser args;
args.add_positional_argument(filename, "File to process", "file", Core::ArgsParser::Required::Yes);
args.parse(argc, argv);
// FIXME: Figure out how to do this sanely from stdin
auto maybe_file = MappedFile::map(filename);
if (maybe_file.is_error()) {
warnln("Unable to dump device tree from file {}: {}", filename, maybe_file.error().string());
return 1;
}
auto file = maybe_file.release_value();
if (file->size() < sizeof(DeviceTree::FlattenedDeviceTreeHeader)) {
warnln("Not enough data in {} to contain a device tree header!", filename);
return 1;
}
auto* fdt_header = reinterpret_cast<DeviceTree::FlattenedDeviceTreeHeader const*>(file->data());
bool valid = DeviceTree::dump(*fdt_header, static_cast<u8 const*>(file->data()), file->size());
return valid ? 0 : 1;
}