| 1 | ␊ |
| 2 | /*␊ |
| 3 | * Copyright 2007 David F. Elliott. All rights reserved.␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #include "libsaio.h"␊ |
| 7 | #include "boot.h"␊ |
| 8 | #include "bootstruct.h"␊ |
| 9 | #include "efi.h"␊ |
| 10 | #include "acpi.h"␊ |
| 11 | #include "fake_efi.h"␊ |
| 12 | #include "efi_tables.h"␊ |
| 13 | #include "platform.h"␊ |
| 14 | #include "acpi_patcher.h"␊ |
| 15 | #include "smbios_patcher.h"␊ |
| 16 | #include "device_inject.h"␊ |
| 17 | #include "convert.h"␊ |
| 18 | #include "pci.h"␊ |
| 19 | #include "sl.h"␊ |
| 20 | ␊ |
| 21 | extern struct SMBEntryPoint * getSmbios(int which); // now cached␊ |
| 22 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
| 23 | ␊ |
| 24 | /*␊ |
| 25 | Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
| 26 | have EFI. Modifying the kernel source to not require EFI is of course␊ |
| 27 | possible but would have to be maintained as a separate patch because it is␊ |
| 28 | unlikely that Apple wishes to add legacy support to their kernel.␊ |
| 29 | ␊ |
| 30 | As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
| 31 | the intention was clearly to modify this booter to provide EFI-like structures␊ |
| 32 | to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
| 33 | makes a lot of sense from an engineering point of view as it means the kernel␊ |
| 34 | for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
| 35 | DTK systems so long as the kernel checked to ensure the boot tables were␊ |
| 36 | filled in appropriately. Modern xnu requires a system table and a runtime␊ |
| 37 | services table and performs no checks whatsoever to ensure the pointers to␊ |
| 38 | these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
| 39 | early on in the boot process if the system table pointer is zero.␊ |
| 40 | ␊ |
| 41 | Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
| 42 | Frequency to be a property in the /efi/platform node of the device tree or else␊ |
| 43 | it panics the bootstrap process very early on.␊ |
| 44 | ␊ |
| 45 | As of this writing, the current implementation found here is good enough␊ |
| 46 | to make the currently available xnu kernel boot without modification on a␊ |
| 47 | system with an appropriate processor. With a minor source modification to␊ |
| 48 | the tsc_init function to remove the explicit check for Core or Core 2␊ |
| 49 | processors the kernel can be made to boot on other processors so long as␊ |
| 50 | the code can be executed by the processor and the machine contains the␊ |
| 51 | necessary hardware.␊ |
| 52 | */␊ |
| 53 | ␊ |
| 54 | ␊ |
| 55 | /*==========================================================================␊ |
| 56 | * Utility function to make a device tree string from an EFI_GUID␊ |
| 57 | */␊ |
| 58 | ␊ |
| 59 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
| 60 | {␊ |
| 61 | char *string = malloc(37);␊ |
| 62 | efi_guid_unparse_upper(pGuid, string);␊ |
| 63 | return string;␊ |
| 64 | }␊ |
| 65 | ␊ |
| 66 | ␊ |
| 67 | /*==========================================================================␊ |
| 68 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
| 69 | */␊ |
| 70 | static uint64_t ptov64(uint32_t addr)␊ |
| 71 | {␊ |
| 72 | return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
| 73 | }␊ |
| 74 | ␊ |
| 75 | ␊ |
| 76 | /*==========================================================================␊ |
| 77 | * Fake EFI implementation␊ |
| 78 | */␊ |
| 79 | ␊ |
| 80 | /* Identify ourselves as the EFI firmware vendor */␊ |
| 81 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
| 82 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
| 83 | ␊ |
| 84 | /* Default platform system_id (fix by IntVar) */␊ |
| 85 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF";//random value gen by uuidgen␊ |
| 86 | ␊ |
| 87 | /* Just a ret instruction */␊ |
| 88 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
| 89 | /* movl $0x80000003,%eax; ret */␊ |
| 90 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
| 91 | ␊ |
| 92 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
| 93 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
| 94 | Node *gEfiConfigurationTableNode = NULL;␊ |
| 95 | ␊ |
| 96 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
| 97 | {␊ |
| 98 | EFI_UINTN i = 0;␊ |
| 99 | ␉␊ |
| 100 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
| 101 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
| 102 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 103 | ␉{␊ |
| 104 | ␉␉i = gST32->NumberOfTableEntries;␊ |
| 105 | ␉}␊ |
| 106 | ␉else␊ |
| 107 | ␉{␊ |
| 108 | ␉␉i = gST64->NumberOfTableEntries;␊ |
| 109 | ␉}␊ |
| 110 | ␉␊ |
| 111 | /* We only do adds, not modifications and deletes like InstallConfigurationTable */␊ |
| 112 | if(i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
| 113 | stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
| 114 | ␊ |
| 115 | if(pGuid == NULL)␊ |
| 116 | return EFI_INVALID_PARAMETER;␊ |
| 117 | ␊ |
| 118 | if(table != NULL)␊ |
| 119 | {␊ |
| 120 | ␉/* FIXME␊ |
| 121 | ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
| 122 | ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
| 123 | ␊ |
| 124 | ++gST->NumberOfTableEntries;␊ |
| 125 | ␉␉ */␊ |
| 126 | Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
| 127 | ␊ |
| 128 | /* Use the pointer to the GUID we just stuffed into the system table */␊ |
| 129 | ␉ ␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
| 130 | ␊ |
| 131 | /* The "table" property is the 32-bit (in our implementation) physical address of the table */␊ |
| 132 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
| 133 | ␊ |
| 134 | /* Assume the alias pointer is a global or static piece of data */␊ |
| 135 | if(alias != NULL)␊ |
| 136 | DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
| 137 | ␊ |
| 138 | return EFI_SUCCESS;␊ |
| 139 | }␊ |
| 140 | return EFI_UNSUPPORTED;␊ |
| 141 | }␊ |
| 142 | ␊ |
| 143 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
| 144 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
| 145 | {␊ |
| 146 | efiSystemTable->Hdr.CRC32 = 0;␊ |
| 147 | efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
| 148 | }*/␊ |
| 149 | ␊ |
| 150 | /*␊ |
| 151 | What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
| 152 | runtime services table.␊ |
| 153 | ␊ |
| 154 | Because we build against modern headers with kBootArgsRevision 4 we␊ |
| 155 | also take care to set efiMode = 32.␊ |
| 156 | */␊ |
| 157 | void setupEfiTables32(void)␊ |
| 158 | {␊ |
| 159 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
| 160 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
| 161 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
| 162 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
| 163 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
| 164 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
| 165 | ␉// and probably will stay that way.␊ |
| 166 | ␉struct fake_efi_pages␊ |
| 167 | ␉{␊ |
| 168 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
| 169 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
| 170 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
| 171 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
| 172 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 173 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 174 | ␉};␊ |
| 175 | ␉␊ |
| 176 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
| 177 | ␉␊ |
| 178 | ␉// Zero out all the tables in case fields are added later␊ |
| 179 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
| 180 | ␉␊ |
| 181 | ␉// --------------------------------------------------------------------␊ |
| 182 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
| 183 | ␉// functions returning int and simply return for void functions.␊ |
| 184 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
| 185 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
| 186 | ␉␊ |
| 187 | ␉// --------------------------------------------------------------------␊ |
| 188 | ␉// System table␊ |
| 189 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
| 190 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
| 191 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
| 192 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
| 193 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
| 194 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
| 195 | ␉␊ |
| 196 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
| 197 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
| 198 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
| 199 | ␉␊ |
| 200 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
| 201 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
| 202 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
| 203 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
| 204 | ␉efiSystemTable->ConIn = 0;␊ |
| 205 | ␉␊ |
| 206 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
| 207 | ␉efiSystemTable->ConOut = 0;␊ |
| 208 | ␉␊ |
| 209 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
| 210 | ␉efiSystemTable->StdErr = 0;␊ |
| 211 | ␉␊ |
| 212 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
| 213 | ␉␊ |
| 214 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
| 215 | ␉// boot process is exited so we can probably do without it.␊ |
| 216 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
| 217 | ␉// so I'm guessing they don't use it.␊ |
| 218 | ␉efiSystemTable->BootServices = 0;␊ |
| 219 | ␉␊ |
| 220 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
| 221 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
| 222 | ␉␊ |
| 223 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
| 224 | ␉// Must be initialized to zero before CRC32, done above.␊ |
| 225 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
| 226 | ␉␊ |
| 227 | ␉// --------------------------------------------------------------------␊ |
| 228 | ␉// Runtime services␊ |
| 229 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
| 230 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
| 231 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
| 232 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
| 233 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
| 234 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
| 235 | ␉␊ |
| 236 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
| 237 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
| 238 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
| 239 | ␉// will call these without checking to see if they are null.␊ |
| 240 | ␉//␊ |
| 241 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
| 242 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
| 243 | ␉// at least providing some sort of implementation until one can be provided␊ |
| 244 | ␉// nicely in a kext.␊ |
| 245 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
| 246 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
| 247 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 248 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 249 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 250 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 251 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
| 252 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
| 253 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
| 254 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
| 255 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
| 256 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
| 257 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
| 258 | ␉␊ |
| 259 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 260 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
| 261 | ␉␊ |
| 262 | ␉// --------------------------------------------------------------------␊ |
| 263 | ␉// Finish filling in the rest of the boot args that we need.␊ |
| 264 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
| 265 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
| 266 | ␉␊ |
| 267 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
| 268 | ␉// things like efiRuntimeServices* and what not.␊ |
| 269 | ␉//␊ |
| 270 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
| 271 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
| 272 | }␊ |
| 273 | ␊ |
| 274 | void setupEfiTables64(void)␊ |
| 275 | {␊ |
| 276 | ␉struct fake_efi_pages␊ |
| 277 | ␉{␊ |
| 278 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
| 279 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
| 280 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
| 281 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
| 282 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 283 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 284 | ␉};␊ |
| 285 | ␉␊ |
| 286 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
| 287 | ␉␊ |
| 288 | ␉// Zero out all the tables in case fields are added later␊ |
| 289 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
| 290 | ␉␊ |
| 291 | ␉// --------------------------------------------------------------------␊ |
| 292 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
| 293 | ␉// functions returning int and simply return for void functions.␊ |
| 294 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
| 295 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
| 296 | ␉␊ |
| 297 | ␉// --------------------------------------------------------------------␊ |
| 298 | ␉// System table␊ |
| 299 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
| 300 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
| 301 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
| 302 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
| 303 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
| 304 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
| 305 | ␉␊ |
| 306 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
| 307 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
| 308 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
| 309 | ␉␊ |
| 310 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
| 311 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
| 312 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
| 313 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
| 314 | ␉efiSystemTable->ConIn = 0;␊ |
| 315 | ␉␊ |
| 316 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
| 317 | ␉efiSystemTable->ConOut = 0;␊ |
| 318 | ␉␊ |
| 319 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
| 320 | ␉efiSystemTable->StdErr = 0;␊ |
| 321 | ␉␊ |
| 322 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
| 323 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
| 324 | ␉// boot process is exited so we can probably do without it.␊ |
| 325 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
| 326 | ␉// so I'm guessing they don't use it.␊ |
| 327 | ␉efiSystemTable->BootServices = 0;␊ |
| 328 | ␉␊ |
| 329 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
| 330 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
| 331 | ␉␊ |
| 332 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 333 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
| 334 | ␉␊ |
| 335 | ␉// --------------------------------------------------------------------␊ |
| 336 | ␉// Runtime services␊ |
| 337 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
| 338 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
| 339 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
| 340 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
| 341 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
| 342 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
| 343 | ␉␊ |
| 344 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
| 345 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
| 346 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
| 347 | ␉// will call these without checking to see if they are null.␊ |
| 348 | ␉//␊ |
| 349 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
| 350 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
| 351 | ␉// at least providing some sort of implementation until one can be provided␊ |
| 352 | ␉// nicely in a kext.␊ |
| 353 | ␉␊ |
| 354 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
| 355 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
| 356 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 357 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 358 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 359 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 360 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 361 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 362 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 363 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 364 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 365 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 366 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
| 367 | ␉␊ |
| 368 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 369 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
| 370 | ␉␊ |
| 371 | ␉// --------------------------------------------------------------------␊ |
| 372 | ␉// Finish filling in the rest of the boot args that we need.␊ |
| 373 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
| 374 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
| 375 | ␉␊ |
| 376 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
| 377 | ␉// things like efiRuntimeServices* and what not.␊ |
| 378 | ␉//␊ |
| 379 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
| 380 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
| 381 | }␊ |
| 382 | ␊ |
| 383 | /*␊ |
| 384 | In addition to the EFI tables there is also the EFI device tree node.␊ |
| 385 | In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
| 386 | the tsc_init function will panic very early on in kernel startup, before␊ |
| 387 | the console is available.␊ |
| 388 | */␊ |
| 389 | ␊ |
| 390 | /*==========================================================================␊ |
| 391 | * FSB Frequency detection␊ |
| 392 | */␊ |
| 393 | ␊ |
| 394 | /* These should be const but DT__AddProperty takes char* */␊ |
| 395 | static const char const TSC_Frequency_prop[] = "TSCFrequency";␊ |
| 396 | static const char const FSB_Frequency_prop[] = "FSBFrequency";␊ |
| 397 | static const char const CPU_Frequency_prop[] = "CPUFrequency";␊ |
| 398 | ␊ |
| 399 | /*==========================================================================␊ |
| 400 | * SMBIOS␊ |
| 401 | */␊ |
| 402 | ␊ |
| 403 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
| 404 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
| 405 | ␊ |
| 406 | #define SMBIOS_RANGE_START 0x000F0000␊ |
| 407 | #define SMBIOS_RANGE_END 0x000FFFFF␊ |
| 408 | ␊ |
| 409 | /* '_SM_' in little endian: */␊ |
| 410 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
| 411 | ␊ |
| 412 | #define EFI_ACPI_TABLE_GUID \␊ |
| 413 | { \␊ |
| 414 | 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
| 415 | }␊ |
| 416 | ␊ |
| 417 | #define EFI_ACPI_20_TABLE_GUID \␊ |
| 418 | { \␊ |
| 419 | 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
| 420 | }␊ |
| 421 | ␊ |
| 422 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
| 423 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
| 424 | ␊ |
| 425 | ␊ |
| 426 | /*==========================================================================␊ |
| 427 | * Fake EFI implementation␊ |
| 428 | */␊ |
| 429 | ␊ |
| 430 | /* These should be const but DT__AddProperty takes char* */␊ |
| 431 | static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
| 432 | static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
| 433 | static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
| 434 | static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
| 435 | static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
| 436 | static const char const SYSTEM_ID_PROP[] = "system-id";␊ |
| 437 | static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
| 438 | static const char const SYSTEM_TYPE_PROP[] = "system-type";␊ |
| 439 | static const char const MODEL_PROP[] = "Model";␊ |
| 440 | ␊ |
| 441 | ␊ |
| 442 | /* Get an smbios option string option to convert to EFI_CHAR16 string */␊ |
| 443 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
| 444 | {␊ |
| 445 | const char * src= getStringForKey(key, &bootInfo->smbiosConfig);␊ |
| 446 | EFI_CHAR16* dst = 0;␊ |
| 447 | size_t i=0;␊ |
| 448 | ␊ |
| 449 | if (!key || !(*key) || !len || !src) return 0;␊ |
| 450 | ␊ |
| 451 | *len = strlen(src);␊ |
| 452 | dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
| 453 | for (; i < (*len); i++) dst[i] = src[i];␊ |
| 454 | dst[(*len)] = '\0';␊ |
| 455 | *len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊ |
| 456 | return dst;␊ |
| 457 | }␊ |
| 458 | ␊ |
| 459 | /* Get the SystemID from the bios dmi info */␊ |
| 460 | static EFI_CHAR8* getSmbiosUUID()␊ |
| 461 | {␊ |
| 462 | ␉struct SMBEntryPoint␉*smbios;␊ |
| 463 | ␉SMBByte␉␉␉*p;␊ |
| 464 | ␉int␉␉␉i, isZero, isOnes;␊ |
| 465 | ␉static EFI_CHAR8 uuid[UUID_LEN];␊ |
| 466 | ␊ |
| 467 | ␉smbios = getSmbios(SMBIOS_PATCHED);␉/* checks for _SM_ anchor and table header checksum */␊ |
| 468 | ␉if (smbios==NULL) return 0; // getSmbios() return a non null value if smbios is found␊ |
| 469 | ␊ |
| 470 | ␉p = (SMBByte*) FindFirstDmiTableOfType(1, 0x19); /* Type 1: (3.3.2) System Information */␊ |
| 471 | ␉if (p==NULL) return NULL;␊ |
| 472 | ␊ |
| 473 | ␉verbose("Found SMBIOS System Information Table 1\n");␊ |
| 474 | ␉p += 8;␊ |
| 475 | ␊ |
| 476 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊ |
| 477 | ␉␉if (p[i] != 0x00) isZero = 0;␊ |
| 478 | ␉␉if (p[i] != 0xff) isOnes = 0;␊ |
| 479 | ␉}␊ |
| 480 | ␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊ |
| 481 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
| 482 | ␉␉return 0;␊ |
| 483 | ␉}␊ |
| 484 | ␊ |
| 485 | ␉memcpy(uuid, p, UUID_LEN);␊ |
| 486 | ␉return uuid;␊ |
| 487 | }␊ |
| 488 | ␊ |
| 489 | /* return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
| 490 | * or from the bios if not, or from a fixed value if no bios value is found ␊ |
| 491 | */␊ |
| 492 | static EFI_CHAR8* getSystemID()␊ |
| 493 | { // unable to determine UUID for host. Error: 35 fix␊ |
| 494 | ␊ |
| 495 | // Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
| 496 | // belong to smbios config only ...␊ |
| 497 | const char * sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊ |
| 498 | EFI_CHAR8* ret = getUUIDFromString(sysId);␊ |
| 499 | ␊ |
| 500 | if(!sysId || !ret) { // try bios dmi info UUID extraction ␊ |
| 501 | ret = getSmbiosUUID();␊ |
| 502 | sysId = 0;␊ |
| 503 | }␊ |
| 504 | if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊ |
| 505 | ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
| 506 | ␊ |
| 507 | verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
| 508 | return ret;␊ |
| 509 | }␊ |
| 510 | ␊ |
| 511 | // must be called AFTER setup Acpi because we need to take care of correct facp content to reflect in ioregs␊ |
| 512 | void setupSystemType()␊ |
| 513 | {␊ |
| 514 | Node *node = DT__FindNode("/", false);␊ |
| 515 | if (node == 0) stop("Couldn't get root node");␊ |
| 516 | // we need to write this property after facp parsing␊ |
| 517 | /* Export system-type only if it has been overrriden by the SystemType option */␊ |
| 518 | DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
| 519 | }␊ |
| 520 | ␊ |
| 521 | void setupEfiDeviceTree(void)␊ |
| 522 | {␊ |
| 523 | EFI_CHAR16* ret16=0;␊ |
| 524 | EFI_CHAR8* ret=0;␊ |
| 525 | size_t len=0;␊ |
| 526 | Node *node;␊ |
| 527 | ␊ |
| 528 | node = DT__FindNode("/", false);␊ |
| 529 | ␊ |
| 530 | if (node == 0) stop("Couldn't get root node");␊ |
| 531 | ␊ |
| 532 | /* We could also just do DT__FindNode("/efi/platform", true)␊ |
| 533 | * But I think eventually we want to fill stuff in the efi node␊ |
| 534 | * too so we might as well create it so we have a pointer for it too.␊ |
| 535 | */␊ |
| 536 | node = DT__AddChild(node, "efi");␊ |
| 537 | ␊ |
| 538 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 539 | ␉{␊ |
| 540 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊ |
| 541 | ␉}␊ |
| 542 | ␉else␊ |
| 543 | ␉{␊ |
| 544 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊ |
| 545 | ␉}␊ |
| 546 | ␉␊ |
| 547 | DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
| 548 | DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
| 549 | ␊ |
| 550 | /* TODO: Fill in other efi properties if necessary */␊ |
| 551 | ␊ |
| 552 | /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
| 553 | * is set up. That is, name and table properties */␊ |
| 554 | Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
| 555 | ␊ |
| 556 | if (archCpuType == CPU_TYPE_I386)␊ |
| 557 | ␉{␊ |
| 558 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
| 559 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
| 560 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
| 561 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
| 562 | ␉␉␊ |
| 563 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
| 564 | ␉}␊ |
| 565 | ␉else␊ |
| 566 | ␉{␊ |
| 567 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
| 568 | ␉}␊ |
| 569 | ␊ |
| 570 | /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
| 571 | * all of the configuration tables needed by various kernel extensions.␊ |
| 572 | */␊ |
| 573 | gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
| 574 | ␊ |
| 575 | /* Now fill in the /efi/platform Node */␊ |
| 576 | Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
| 577 | ␊ |
| 578 | /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
| 579 | * the value in the fsbFrequency global and not an malloc'd pointer␊ |
| 580 | * because the DT_AddProperty function does not copy its args.␊ |
| 581 | */␊ |
| 582 | if(Platform.CPU.FSBFrequency != 0) ␊ |
| 583 | DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
| 584 | ␊ |
| 585 | /* Export TSC and CPU frequencies for use by the kernel or KEXTs */␊ |
| 586 | if(Platform.CPU.TSCFrequency != 0) ␊ |
| 587 | DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
| 588 | ␊ |
| 589 | if(Platform.CPU.CPUFrequency != 0) ␊ |
| 590 | DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
| 591 | ␊ |
| 592 | /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊ |
| 593 | if((ret=getSystemID()))␊ |
| 594 | DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
| 595 | ␊ |
| 596 | /* Export SystemSerialNumber if present */␊ |
| 597 | if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
| 598 | DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
| 599 | ␊ |
| 600 | /* Export Model if present */␊ |
| 601 | if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
| 602 | DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
| 603 | ␊ |
| 604 | /* Fill /efi/device-properties node.␊ |
| 605 | */␊ |
| 606 | setupDeviceProperties(node);␊ |
| 607 | }␊ |
| 608 | ␊ |
| 609 | /* Load the smbios.plist override config file if any */␊ |
| 610 | static void setupSmbiosConfigFile()␊ |
| 611 | {␊ |
| 612 | const char * value = getStringForKey(kSMBIOS, &bootInfo->bootConfig);␊ |
| 613 | extern void scan_mem();␊ |
| 614 | ␊ |
| 615 | if (!value) value = "/Extra/smbios.plist";␊ |
| 616 | if (loadConfigFile(value, &bootInfo->smbiosConfig) == -1) {␊ |
| 617 | verbose("No SMBIOS replacement found\n");␊ |
| 618 | }␊ |
| 619 | ␊ |
| 620 | // get a chance to scan mem dynamically if user asks for it while having the config options loaded as well␊ |
| 621 | // as opposed to when it was in scan_platform(), also load the orig. smbios so that we can access dmi info without␊ |
| 622 | // patching the smbios yet␊ |
| 623 | getSmbios(SMBIOS_ORIGINAL);␊ |
| 624 | scan_mem(); ␊ |
| 625 | smbios_p = (EFI_PTR32) getSmbios(SMBIOS_PATCHED);␉// process smbios asap␊ |
| 626 | }␊ |
| 627 | ␊ |
| 628 | /* Installs all the needed configuration table entries */␊ |
| 629 | static void setupEfiConfigurationTable()␊ |
| 630 | {␊ |
| 631 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
| 632 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, "SMBIOS_P"); //Azi: give an "alias" to this stuff?␊ |
| 633 | ␉␊ |
| 634 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
| 635 | ␉setupAcpi();␊ |
| 636 | ␉␊ |
| 637 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
| 638 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 639 | ␉{␊ |
| 640 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
| 641 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
| 642 | ␉}␊ |
| 643 | ␉else␊ |
| 644 | ␉{␊ |
| 645 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
| 646 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
| 647 | ␉}␊ |
| 648 | }␊ |
| 649 | ␊ |
| 650 | ␊ |
| 651 | /* Entrypoint from boot.c */␊ |
| 652 | void setupFakeEfi(void)␊ |
| 653 | {␊ |
| 654 | ␉// Generate efi device strings ␊ |
| 655 | ␉setup_pci_devs(root_pci_dev);␊ |
| 656 | ␊ |
| 657 | ␉// load smbios.plist file if any␊ |
| 658 | ␉setupSmbiosConfigFile();␊ |
| 659 | ␉␊ |
| 660 | ␉// Initialize the base table␊ |
| 661 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 662 | ␉{␊ |
| 663 | ␉␉setupEfiTables32();␊ |
| 664 | ␉}␊ |
| 665 | ␉else␊ |
| 666 | ␉{␊ |
| 667 | ␉␉setupEfiTables64();␊ |
| 668 | ␉}␊ |
| 669 | ␉␊ |
| 670 | ␉// Initialize the device tree␊ |
| 671 | ␉setupEfiDeviceTree();␊ |
| 672 | ␉␊ |
| 673 | ␉// Add configuration table entries to both the services table and the device tree␊ |
| 674 | ␉setupEfiConfigurationTable();␊ |
| 675 | }␊ |
| 676 | ␊ |
| 677 | |
