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Implemented
unfairgva device property for MP5,1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // | ||
| // kern_unfair.cpp | ||
| // WhateverGreen | ||
| // | ||
| // Copyright © 2021 vit9696. All rights reserved. | ||
| // | ||
|
|
||
| #include "kern_unfair.hpp" | ||
| #include "kern_weg.hpp" | ||
|
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| #include <IOKit/IOService.h> | ||
| #include <Headers/plugin_start.hpp> | ||
| #include <Headers/kern_api.hpp> | ||
| #include <Headers/kern_cpu.hpp> | ||
| #include <Headers/kern_devinfo.hpp> | ||
| #include <Headers/kern_file.hpp> | ||
| #include <Headers/kern_iokit.hpp> | ||
| #include <Headers/kern_user.hpp> | ||
| #include <IOKit/IODeviceTreeSupport.h> | ||
|
|
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| UNFAIR *UNFAIR::callbackUNFAIR; | ||
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| void UNFAIR::init() { | ||
| callbackUNFAIR = this; | ||
|
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| disableUnfair = !(lilu.getRunMode() & LiluAPI::RunningNormal); | ||
| disableUnfair |= checkKernelArgument("-unfairoff"); | ||
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| if (disableUnfair) | ||
| return; | ||
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| sharedCachePath = UserPatcher::getSharedCachePath(); | ||
| DBGLOG("unfair", "chosen shared cache path is %s", sharedCachePath); | ||
| } | ||
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| void UNFAIR::deinit() { | ||
|
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| } | ||
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| void UNFAIR::csValidatePage(vnode *vp, memory_object_t pager, memory_object_offset_t page_offset, const void *data, int *validated_p, int *tainted_p, int *nx_p) { | ||
| FunctionCast(csValidatePage, callbackUNFAIR->orgCsValidatePage)(vp, pager, page_offset, data, validated_p, tainted_p, nx_p); | ||
|
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| char path[PATH_MAX]; | ||
| int pathlen = PATH_MAX; | ||
| if (vn_getpath(vp, path, &pathlen) == 0) { | ||
| //DBGLOG("unfair", "csValidatePage %s", path); | ||
|
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| if ((callbackUNFAIR->unfairGva & UnfairDyldSharedCache) != 0 && UNLIKELY(strcmp(path, callbackUNFAIR->sharedCachePath) == 0)) { | ||
| if ((callbackUNFAIR->unfairGva & UnfairRelaxHdcpRequirements) != 0) { | ||
| static const uint8_t find[29] = { | ||
| 0x4D, 0x61, 0x63, 0x50, 0x72, 0x6F, 0x35, 0x2C, 0x31, 0x00, 0x4D, 0x61, 0x63, 0x50, 0x72, 0x6F, | ||
| 0x36, 0x2C, 0x31, 0x00, 0x49, 0x4F, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65 | ||
| }; | ||
| if (UNLIKELY(KernelPatcher::findAndReplace(const_cast<void *>(data), PAGE_SIZE, find, sizeof(find), BaseDeviceInfo::get().modelIdentifier, 20))) | ||
| DBGLOG("unfair", "patched relaxed drm model"); | ||
| } | ||
|
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| if ((callbackUNFAIR->unfairGva & UnfairCustomAppleGvaBoardId) != 0) { | ||
| static const uint8_t find[18] = { | ||
| 0x62, 0x6F, 0x61, 0x72, 0x64, 0x2D, 0x69, 0x64, 0x00, 0x68, 0x77, 0x2E, 0x6D, 0x6F, 0x64, 0x65, | ||
| 0x6C | ||
| }; | ||
| static const uint8_t repl[5] = { | ||
| 0x68, 0x77, 0x67, 0x76, 0x61 | ||
| }; | ||
| if (UNLIKELY(KernelPatcher::findAndReplace(const_cast<void *>(data), PAGE_SIZE, find, sizeof(find), repl, sizeof(repl)))) | ||
| DBGLOG("unfair", "patched board-id -> hwgva-id"); | ||
| } | ||
|
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| } else if ((callbackUNFAIR->unfairGva & UnfairAllowHardwareDrmStreamDecoderOnOldCpuid) != 0 && | ||
| (UNLIKELY(strcmp(path, "/System/Library/PrivateFrameworks/CoreLSKDMSE.framework/Versions/A/CoreLSKDMSE") == 0) || | ||
| UNLIKELY(strcmp(path, "/System/Library/PrivateFrameworks/CoreLSKD.framework/Versions/A/CoreLSKD") == 0))) { | ||
| static const uint8_t find[] = {0xC7, 0xC0, 0x01, 0x00, 0x00, 0x00, 0x0F, 0xA2}; | ||
| static const uint8_t repl[] = {0xC7, 0xC0, 0xC3, 0x06, 0x03, 0x00, 0x90, 0x90}; | ||
| if (UNLIKELY(KernelPatcher::findAndReplace(const_cast<void *>(data), PAGE_SIZE, find, sizeof(find), repl, sizeof(repl)))) | ||
| DBGLOG("unfair", "patched streaming cpuid to haswell"); | ||
| } | ||
| } | ||
| } | ||
|
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| void UNFAIR::processKernel(KernelPatcher &patcher, DeviceInfo *info) { | ||
| if (disableUnfair) | ||
| return; | ||
|
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| WEG::getVideoArgument(info, "unfairgva", &unfairGva, sizeof(unfairGva)); | ||
| if (unfairGva == 0) { | ||
| DBGLOG("unfair", "disabling unfair gva due to missing boot argument"); | ||
| disableUnfair = true; | ||
| return; | ||
| } | ||
|
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| DBGLOG("unfair", "activating with %d bitmask", unfairGva); | ||
|
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| if ((unfairGva & UnfairCustomAppleGvaBoardId) != 0) { | ||
| auto entry = IORegistryEntry::fromPath("/", gIODTPlane); | ||
| if (entry) { | ||
| DBGLOG("unfair", "setting hwgva-id to iMacPro1,1"); | ||
| entry->setProperty("hwgva-id", const_cast<char *>("Mac-7BA5B2D9E42DDD94"), static_cast<uint32_t>(sizeof("Mac-7BA5B2D9E42DDD94"))); | ||
| entry->release(); | ||
| } else { | ||
| SYSLOG("shiki", "failed to obtain iodt tree"); | ||
| unfairGva &= ~UnfairCustomAppleGvaBoardId; | ||
| } | ||
| } | ||
|
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| KernelPatcher::RouteRequest csRoute("_cs_validate_page", csValidatePage, orgCsValidatePage); | ||
| if (!patcher.routeMultipleLong(KernelPatcher::KernelID, &csRoute, 1)) { | ||
| SYSLOG("unfair", "failed to route cs validation pages"); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| // | ||
| // kern_unfair.hpp | ||
| // WhateverGreen | ||
| // | ||
| // Copyright © 2021 vit9696. All rights reserved. | ||
| // | ||
|
|
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| #ifndef kern_unfair_hpp | ||
| #define kern_unfair_hpp | ||
|
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| #include <Headers/kern_patcher.hpp> | ||
| #include <Headers/kern_devinfo.hpp> | ||
| #include <Headers/kern_cpu.hpp> | ||
| #include <Headers/kern_user.hpp> | ||
|
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| class UNFAIR { | ||
| public: | ||
| void init(); | ||
| void deinit(); | ||
|
|
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| /** | ||
| * Property patching routine | ||
| * | ||
| * @param patcher KernelPatcher instance | ||
| * @param info device info | ||
| */ | ||
| void processKernel(KernelPatcher &patcher, DeviceInfo *info); | ||
|
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| private: | ||
| /** | ||
| * Private self instance for callbacks | ||
| */ | ||
| static UNFAIR *callbackUNFAIR; | ||
|
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| /** | ||
| * Disable unfair, based on mode | ||
| */ | ||
| bool disableUnfair {false}; | ||
|
|
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| /** | ||
| * GVA bitmask as specified in unfairgva boot argument / property. | ||
| */ | ||
| enum : uint32_t { | ||
| UnfairAllowHardwareDrmStreamDecoderOnOldCpuid = 1, | ||
| UnfairRelaxHdcpRequirements = 2, | ||
| UnfairCustomAppleGvaBoardId = 4, | ||
| UnfairDyldSharedCache = UnfairRelaxHdcpRequirements | UnfairCustomAppleGvaBoardId, | ||
| }; | ||
|
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| /** | ||
| * Patch rule bitmask (0 means none). | ||
| */ | ||
| uint32_t unfairGva {0}; | ||
|
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| /** | ||
| * Codesign page validation wrapper used for userspace patching | ||
| */ | ||
| static void csValidatePage(vnode *vp, memory_object_t pager, memory_object_offset_t page_offset, const void *data, int *validated_p, int *tainted_p, int *nx_p); | ||
|
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| /** | ||
| * Original codesign page validation pointer. | ||
| */ | ||
| mach_vm_address_t orgCsValidatePage {0}; | ||
|
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| /** | ||
| * Cyrrent shared cache. | ||
| */ | ||
| const char *sharedCachePath {nullptr}; | ||
| }; | ||
|
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| #endif /* kern_unfair_hpp */ |
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