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BIOS: Improve robustness of BIOS searching

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Always prefer a known BIOS image over an unknown image. Hopefully this
will stop people getting crashes on startup due to other files in the
BIOS directory confusing it.
This commit is contained in:
Connor McLaughlin 2021-01-05 12:20:21 +10:00
parent 5cd261a5b2
commit 8f5c20bdf5
1 changed files with 19 additions and 2 deletions
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21
src/core/host_interface.cpp
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@ -301,6 +301,7 @@ std::optional<std::vector<u8>> HostInterface::FindBIOSImageInDirectory(ConsoleRe
std::string fallback_path;
std::optional<BIOS::Image> fallback_image;
const BIOS::ImageInfo* fallback_info = nullptr;
for (const FILESYSTEM_FIND_DATA& fd : results)
{
@ -320,14 +321,21 @@ std::optional<std::vector<u8>> HostInterface::FindBIOSImageInDirectory(ConsoleRe
BIOS::Hash found_hash = BIOS::GetHash(*found_image);
Log_DevPrintf("Hash for BIOS '%s': %s", fd.FileName.c_str(), found_hash.ToString().c_str());
const BIOS::ImageInfo* ii = BIOS::GetImageInfoForHash(found_hash);
if (BIOS::IsValidHashForRegion(region, found_hash))
{
Log_InfoPrintf("Using BIOS '%s'", fd.FileName.c_str());
Log_InfoPrintf("Using BIOS '%s': %s", fd.FileName.c_str(), ii ? ii->description : "");
return found_image;
}
// don't let an unknown bios take precedence over a known one
if (!fallback_path.empty() && (fallback_info || !ii))
continue;
fallback_path = std::move(full_path);
fallback_image = std::move(found_image);
fallback_info = ii;
}
if (!fallback_image.has_value())
@ -338,7 +346,16 @@ std::optional<std::vector<u8>> HostInterface::FindBIOSImageInDirectory(ConsoleRe
return std::nullopt;
}
Log_WarningPrintf("Falling back to possibly-incompatible image '%s'", fallback_path.c_str());
if (!fallback_info)
{
Log_WarningPrintf("Using unknown BIOS '%s'. This may crash.", fallback_path.c_str());
}
else
{
Log_WarningPrintf("Falling back to possibly-incompatible image '%s': %s", fallback_path.c_str(),
fallback_info->description);
}
return fallback_image;
}