diff --git a/hw/misc/applesmc.c b/hw/misc/applesmc.c
index cec247b5ee..1b9acaf1d3 100644
--- a/hw/misc/applesmc.c
+++ b/hw/misc/applesmc.c
@@ -38,171 +38,6 @@
 #include "qemu/timer.h"
 #include "qom/object.h"
 
-#if defined(__APPLE__) && defined(__MACH__)
-#include <IOKit/IOKitLib.h>
-
-enum {
-    kSMCSuccess     = 0x00,
-    kSMCKeyNotFound = 0x84
-};
-
-enum {
-    kSMCUserClientOpen  = 0x00,
-    kSMCUserClientClose = 0x01,
-    kSMCHandleYPCEvent  = 0x02,
-    kSMCReadKey         = 0x05,
-    kSMCGetKeyInfo      = 0x09
-};
-
-typedef struct SMCVersion {
-    uint8_t  major;
-    uint8_t  minor;
-    uint8_t  build;
-    uint8_t  reserved;
-    uint16_t release;
-} SMCVersion;
-
-typedef struct SMCPLimitData {
-    uint16_t version;
-    uint16_t length;
-    uint32_t cpuPLimit;
-    uint32_t gpuPLimit;
-    uint32_t memPLimit;
-} SMCPLimitData;
-
-typedef struct SMCKeyInfoData {
-    IOByteCount dataSize;
-    uint32_t    dataType;
-    uint8_t     dataAttributes;
-} SMCKeyInfoData;
-
-typedef struct {
-    uint32_t       key;
-    SMCVersion     vers;
-    SMCPLimitData  pLimitData;
-    SMCKeyInfoData keyInfo;
-    uint8_t        result;
-    uint8_t        status;
-    uint8_t        data8;
-    uint32_t       data32;
-    uint8_t        bytes[32];
-} SMCParamStruct;
-
-static IOReturn smc_call_struct_method(uint32_t selector,
-                                       SMCParamStruct *inputStruct,
-                                       SMCParamStruct *outputStruct)
-{
-    IOReturn ret;
-
-    size_t inputStructCnt = sizeof(SMCParamStruct);
-    size_t outputStructCnt = sizeof(SMCParamStruct);
-
-    io_service_t smcService = IO_OBJECT_NULL;
-    io_connect_t smcConnect = IO_OBJECT_NULL;
-
-    smcService = IOServiceGetMatchingService(kIOMasterPortDefault,
-                                             IOServiceMatching("AppleSMC"));
-    if (smcService == IO_OBJECT_NULL) {
-        ret = kIOReturnNotFound;
-        goto exit;
-    }
-
-    ret = IOServiceOpen(smcService, mach_task_self(), 1, &smcConnect);
-    if (ret != kIOReturnSuccess) {
-        smcConnect = IO_OBJECT_NULL;
-        goto exit;
-    }
-    if (smcConnect == IO_OBJECT_NULL) {
-        ret = kIOReturnError;
-        goto exit;
-    }
-
-    ret = IOConnectCallMethod(smcConnect, kSMCUserClientOpen,
-                              NULL, 0, NULL, 0,
-                              NULL, NULL, NULL, NULL);
-    if (ret != kIOReturnSuccess) {
-        goto exit;
-    }
-
-    ret = IOConnectCallStructMethod(smcConnect, selector,
-                                    inputStruct, inputStructCnt,
-                                    outputStruct, &outputStructCnt);
-
-exit:
-    if (smcConnect != IO_OBJECT_NULL) {
-        IOConnectCallMethod(smcConnect, kSMCUserClientClose,
-                            NULL, 0, NULL, 0, NULL,
-                            NULL, NULL, NULL);
-        IOServiceClose(smcConnect);
-    }
-
-    return ret;
-}
-
-static IOReturn smc_read_key(uint32_t key,
-                             uint8_t *bytes,
-                             IOByteCount *dataSize)
-{
-    IOReturn ret;
-
-    SMCParamStruct inputStruct;
-    SMCParamStruct outputStruct;
-
-    if (key == 0 || bytes == NULL) {
-        ret = kIOReturnCannotWire;
-        goto exit;
-    }
-
-    /* determine key's data size */
-    memset(&inputStruct, 0, sizeof(SMCParamStruct));
-    inputStruct.data8 = kSMCGetKeyInfo;
-    inputStruct.key = key;
-
-    memset(&outputStruct, 0, sizeof(SMCParamStruct));
-    ret = smc_call_struct_method(kSMCHandleYPCEvent, &inputStruct, &outputStruct);
-    if (ret != kIOReturnSuccess) {
-        goto exit;
-    }
-    if (outputStruct.result == kSMCKeyNotFound) {
-        ret = kIOReturnNotFound;
-        goto exit;
-    }
-    if (outputStruct.result != kSMCSuccess) {
-        ret = kIOReturnInternalError;
-        goto exit;
-    }
-
-    /* get key value */
-    memset(&inputStruct, 0, sizeof(SMCParamStruct));
-    inputStruct.data8 = kSMCReadKey;
-    inputStruct.key = key;
-    inputStruct.keyInfo.dataSize = outputStruct.keyInfo.dataSize;
-
-    memset(&outputStruct, 0, sizeof(SMCParamStruct));
-    ret = smc_call_struct_method(kSMCHandleYPCEvent, &inputStruct, &outputStruct);
-    if (ret != kIOReturnSuccess) {
-        goto exit;
-    }
-    if (outputStruct.result == kSMCKeyNotFound) {
-        ret = kIOReturnNotFound;
-        goto exit;
-    }
-    if (outputStruct.result != kSMCSuccess) {
-        ret = kIOReturnInternalError;
-        goto exit;
-    }
-
-    memset(bytes, 0, *dataSize);
-    if (*dataSize > inputStruct.keyInfo.dataSize) {
-        *dataSize = inputStruct.keyInfo.dataSize;
-    }
-    memcpy(bytes, outputStruct.bytes, *dataSize);
-
-exit:
-    return ret;
-}
-#endif
-
 /* #define DEBUG_SMC */
 
 #define APPLESMC_DEFAULT_IOBASE        0x300
@@ -480,7 +315,6 @@ static const MemoryRegionOps applesmc_err_io_ops = {
 static void applesmc_isa_realize(DeviceState *dev, Error **errp)
 {
     AppleSMCState *s = APPLE_SMC(dev);
-    bool valid_key = false;
 
     memory_region_init_io(&s->io_data, OBJECT(s), &applesmc_data_io_ops, s,
                           "applesmc-data", 1);
@@ -497,31 +331,7 @@ static void applesmc_isa_realize(DeviceState *dev, Error **errp)
     isa_register_ioport(&s->parent_obj, &s->io_err,
                         s->iobase + APPLESMC_ERR_PORT);
 
-    if (s->osk) {
-        valid_key = strlen(s->osk) == 64;
-    } else {
-#if defined(__APPLE__) && defined(__MACH__)
-        IOReturn ret;
-        IOByteCount size = 32;
-
-        ret = smc_read_key('OSK0', (uint8_t *) default_osk, &size);
-        if (ret != kIOReturnSuccess) {
-            goto failure;
-        }
-
-        ret = smc_read_key('OSK1', (uint8_t *) default_osk + size, &size);
-        if (ret != kIOReturnSuccess) {
-            goto failure;
-        }
-
-        warn_report("Using AppleSMC with host key");
-        valid_key = true;
-        s->osk = default_osk;
-failure:;
-#endif
-    }
-
-    if (!valid_key) {
+    if (!s->osk || (strlen(s->osk) != 64)) {
         warn_report("Using AppleSMC with invalid key");
         s->osk = default_osk;
     }