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BlueToolFixup: Fix 12.4 Release Bluetooth support

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Applicable for BCM2070 and BCM2046 chipsets
This commit is contained in:
Mykola Grymalyuk
2022-05-16 17:29:43 -06:00
parent b3cd9de714
commit cbeedb7374
3 changed files with 14 additions and 22 deletions
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36
payloads/Kexts/Acidanthera/BlueToolFixup.patch
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@@ -1,48 +1,40 @@
diff --git a/BrcmPatchRAM/BlueToolFixup.cpp b/BrcmPatchRAM/BlueToolFixup.cpp
index a6e3c69..701a9ad 100644
index a6e3c69..16fcbcd 100644
--- a/BrcmPatchRAM/BlueToolFixup.cpp
+++ b/BrcmPatchRAM/BlueToolFixup.cpp
@@ -48,6 +48,35 @@ bool BlueToolFixup::start(IOService *provider) {
@@ -48,6 +48,27 @@ bool BlueToolFixup::start(IOService *provider) {
static const uint8_t kSkipUpdateFilePathOriginal[] = "/etc/bluetool/SkipBluetoothAutomaticFirmwareUpdate";
static const uint8_t kSkipUpdateFilePathPatched[] = "/System/Library/CoreServices/boot.efi";
+
+// Workaround 12.3 Beta 3 bug where macOS will detect the Bluetooth chipset twice
+// Workaround 12.3 Beta 3+ bug where macOS will detect the Bluetooth chipset twice
+// Once and internal, and second as external dongle:
+// 'ERROR -- Third Party Dongle has the same address as the internal module'
+static const uint8_t kSkipAddressCheckOriginal[] =
+{
+ 0x48, 0x8D, 0x05, 0xC5, 0x97, 0x65, 0x00, // lea rax
+ 0x8B, 0x48, 0x53, // mov ecx
+ 0x33, 0x0B, // xor ecx
+ 0x0F, 0xB7, 0x50, 0x57, // movzx edx
+ 0x66, 0x33, 0x53, 0x04, // xor dx
+ 0x0F, 0xB7, 0xD2, // movzx edx, dx
+ 0x09, 0xCA, // or edx, ecx
+ 0x74, 0x0E, // je
+ 0x48, 0x89, 0xF3, // mov rbx, rsi
+ 0xE8, 0xE3, 0xF3, 0xFE, 0xFF, // call sub_1000c5bc6
+ 0x85, 0xC0, // test eax, eax
+ 0x74, 0x1D, // je loc_1000d6804
+};
+
+static const uint8_t kSkipAddressPatched[] =
+static const uint8_t kSkipAddressCheckPatched[] =
+{
+ 0x48, 0x8D, 0x05, 0xC5, 0x97, 0x65, 0x00, // lea rax
+ 0x8B, 0x48, 0x53, // mov ecx
+ 0x33, 0x0B, // xor ecx
+ 0x0F, 0xB7, 0x50, 0x57, // movzx edx
+ 0x66, 0x33, 0x53, 0x04, // xor dx
+ 0x0F, 0xB7, 0xD2, // movzx edx, dx
+ 0x09, 0xCA, // or edx, ecx
+ 0x75, 0x0E, // jne
+ 0x48, 0x89, 0xF3, // mov rbx, rsi
+ 0xE8, 0xE3, 0xF3, 0xFE, 0xFF, // call sub_1000c5bc6
+ 0x85, 0xC0, // test eax, eax
+ 0x75, 0x1D, // jne loc_1000d6804
+};
+
+
static const uint8_t kVendorCheckOriginal[] =
{
0x81, 0xFA, // cmp edx
@@ -131,6 +160,7 @@ static void patched_cs_validate_page(vnode_t vp, memory_object_t pager, memory_o
@@ -131,6 +152,7 @@ static void patched_cs_validate_page(vnode_t vp, memory_object_t pager, memory_o
}
else if (strcmp(path + dirLength, "bluetoothd") == 0) {
searchAndPatch(data, PAGE_SIZE, path, kVendorCheckOriginal, kVendorCheckPatched);
+ searchAndPatch(data, PAGE_SIZE, path, kSkipAddressCheckOriginal, kSkipAddressPatched);
+ searchAndPatch(data, PAGE_SIZE, path, kSkipAddressCheckOriginal, kSkipAddressCheckPatched);
searchAndPatch(data, PAGE_SIZE, path, kBadChipsetCheckOriginal, kBadChipsetCheckPatched);
if (shouldPatchBoardId)
searchAndPatch(data, PAGE_SIZE, path, boardIdsWithUSBBluetooth[0], kBoardIdSize, BaseDeviceInfo::get().boardIdentifier, kBoardIdSize);