| 1 | ␊ |
| 2 | /*␊ |
| 3 | * Copyright 2007 David F. Elliott.␉ All rights reserved.␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #include "config.h"␊ |
| 7 | #include "saio_types.h"␊ |
| 8 | #include "libsaio.h"␊ |
| 9 | #include "boot.h"␊ |
| 10 | #include "bootstruct.h"␊ |
| 11 | #include "efi.h"␊ |
| 12 | #include "acpi.h"␊ |
| 13 | #include "fake_efi.h"␊ |
| 14 | #include "efi_tables.h"␊ |
| 15 | #include "platform.h"␊ |
| 16 | #include "acpi_patcher.h"␊ |
| 17 | #include "smbios.h"␊ |
| 18 | #include "device_inject.h"␊ |
| 19 | #include "convert.h"␊ |
| 20 | #include "pci.h"␊ |
| 21 | #include "sl.h"␊ |
| 22 | #include "vers.h"␊ |
| 23 | ␊ |
| 24 | #if DEBUG_EFI␊ |
| 25 | ␉#define DBG(x...)␉printf(x)␊ |
| 26 | #else␊ |
| 27 | ␉#define DBG(x...)␊ |
| 28 | #endif␊ |
| 29 | ␊ |
| 30 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
| 31 | ␊ |
| 32 | /*␊ |
| 33 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
| 34 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
| 35 | * possible but would have to be maintained as a separate patch because it is␊ |
| 36 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
| 37 | *␊ |
| 38 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
| 39 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
| 40 | * to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
| 41 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
| 42 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
| 43 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
| 44 | * filled in appropriately.␉Modern xnu requires a system table and a runtime␊ |
| 45 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
| 46 | * these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
| 47 | * early on in the boot process if the system table pointer is zero.␊ |
| 48 | *␊ |
| 49 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
| 50 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
| 51 | * it panics the bootstrap process very early on.␊ |
| 52 | *␊ |
| 53 | * As of this writing, the current implementation found here is good enough␊ |
| 54 | * to make the currently available xnu kernel boot without modification on a␊ |
| 55 | * system with an appropriate processor. With a minor source modification to␊ |
| 56 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
| 57 | * processors the kernel can be made to boot on other processors so long as␊ |
| 58 | * the code can be executed by the processor and the machine contains the␊ |
| 59 | * necessary hardware.␊ |
| 60 | */␊ |
| 61 | ␊ |
| 62 | /*==========================================================================␊ |
| 63 | * Utility function to make a device tree string from an EFI_GUID␊ |
| 64 | */␊ |
| 65 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
| 66 | {␊ |
| 67 | ␉char *string = malloc(37);␊ |
| 68 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
| 69 | ␉return string;␊ |
| 70 | }␊ |
| 71 | ␊ |
| 72 | /*==========================================================================␊ |
| 73 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
| 74 | */␊ |
| 75 | static uint64_t ptov64(uint32_t addr)␊ |
| 76 | {␊ |
| 77 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
| 78 | }␊ |
| 79 | ␊ |
| 80 | // ==========================================================================␊ |
| 81 | ␊ |
| 82 | EFI_UINT32 getCPUTick(void)␊ |
| 83 | {␊ |
| 84 | ␉uint32_t out;␊ |
| 85 | ␉/*␊ |
| 86 | ␉ * Note: shl $32, %edx leaves 0 in %edx, and or to %eax does nothing - zenith432␊ |
| 87 | ␉ */␊ |
| 88 | ␉__asm__ volatile (␊ |
| 89 | ␉␉"rdtsc\n"␊ |
| 90 | ␉␉"shl $32,%%edx\n"␊ |
| 91 | ␉␉"or %%edx,%%eax\n"␊ |
| 92 | ␉␉: "=a" (out)␊ |
| 93 | ␉␉:␊ |
| 94 | ␉␉: "%edx"␊ |
| 95 | ␉);␊ |
| 96 | ␉return out;␊ |
| 97 | }␊ |
| 98 | ␊ |
| 99 | /*==========================================================================␊ |
| 100 | * Fake EFI implementation␊ |
| 101 | */␊ |
| 102 | ␊ |
| 103 | /* Identify ourselves as the EFI firmware vendor */␊ |
| 104 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','3', 0};␊ |
| 105 | ␊ |
| 106 | static EFI_UINT32 const FIRMWARE_REVISION = EFI_SYSTEM_TABLE_REVISION;␊ |
| 107 | ␊ |
| 108 | /* Default platform system_id (fix by IntVar)␊ |
| 109 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
| 110 | */␊ |
| 111 | ␊ |
| 112 | /* Just a ret instruction */␊ |
| 113 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
| 114 | ␊ |
| 115 | /* movl $0x80000003,%eax; ret */␊ |
| 116 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_32[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
| 117 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_64[] = {0x48, 0xb8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc3};␊ |
| 118 | ␊ |
| 119 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
| 120 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
| 121 | Node *gEfiConfigurationTableNode = NULL;␊ |
| 122 | ␊ |
| 123 | // ==========================================================================␊ |
| 124 | ␊ |
| 125 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
| 126 | {␊ |
| 127 | ␉EFI_UINTN i = 0;␊ |
| 128 | ␊ |
| 129 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
| 130 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
| 131 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 132 | ␉{␊ |
| 133 | ␉␉i = gST32->NumberOfTableEntries;␊ |
| 134 | ␉}␊ |
| 135 | ␉else␊ |
| 136 | ␉{␊ |
| 137 | ␉␉i = gST64->NumberOfTableEntries;␊ |
| 138 | ␉}␊ |
| 139 | ␊ |
| 140 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
| 141 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
| 142 | ␉{␊ |
| 143 | ␉␉stop("Fake EFI [ERROR]: Ran out of space for configuration tables [%d]. Increase the reserved size in the code.\n", i);␊ |
| 144 | ␉}␊ |
| 145 | ␊ |
| 146 | ␉if (pGuid == NULL)␊ |
| 147 | ␉{␊ |
| 148 | ␉␉return EFI_INVALID_PARAMETER;␊ |
| 149 | ␉}␊ |
| 150 | ␊ |
| 151 | ␉if (table != NULL)␊ |
| 152 | ␉{␊ |
| 153 | ␉␉// FIXME␊ |
| 154 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
| 155 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
| 156 | ␊ |
| 157 | ␉␉//++gST->NumberOfTableEntries;␊ |
| 158 | ␊ |
| 159 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
| 160 | ␊ |
| 161 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
| 162 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void *)pGuid);␊ |
| 163 | ␊ |
| 164 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
| 165 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void *) * 2, table);␊ |
| 166 | ␊ |
| 167 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
| 168 | ␉␉if (alias != NULL)␊ |
| 169 | ␉␉{␊ |
| 170 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char *)alias);␊ |
| 171 | ␉␉}␊ |
| 172 | ␊ |
| 173 | ␉␉return EFI_SUCCESS;␊ |
| 174 | ␉}␊ |
| 175 | ␉return EFI_UNSUPPORTED;␊ |
| 176 | }␊ |
| 177 | ␊ |
| 178 | // ==========================================================================␊ |
| 179 | ␊ |
| 180 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
| 181 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
| 182 | {␊ |
| 183 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
| 184 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
| 185 | }*/␊ |
| 186 | ␊ |
| 187 | /*␊ |
| 188 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
| 189 | * runtime services table.␊ |
| 190 | *␊ |
| 191 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
| 192 | * also take care to set efiMode = 32.␊ |
| 193 | */␊ |
| 194 | void setupEfiTables32(void)␊ |
| 195 | {␊ |
| 196 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
| 197 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
| 198 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
| 199 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
| 200 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
| 201 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
| 202 | ␉// and probably will stay that way.␊ |
| 203 | ␉struct fake_efi_pages␊ |
| 204 | ␉{␊ |
| 205 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
| 206 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
| 207 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
| 208 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
| 209 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 210 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32)/sizeof(uint8_t)];␊ |
| 211 | ␉};␊ |
| 212 | ␊ |
| 213 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
| 214 | ␊ |
| 215 | ␉// Zero out all the tables in case fields are added later␊ |
| 216 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
| 217 | ␉␊ |
| 218 | ␉// --------------------------------------------------------------------␊ |
| 219 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
| 220 | ␉// functions returning int and simply return for void functions.␊ |
| 221 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
| 222 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_32, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32));␊ |
| 223 | ␉␊ |
| 224 | ␉// --------------------------------------------------------------------␊ |
| 225 | ␉// System table␊ |
| 226 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
| 227 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
| 228 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
| 229 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
| 230 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
| 231 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
| 232 | ␉␊ |
| 233 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
| 234 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
| 235 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
| 236 | ␉␊ |
| 237 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
| 238 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
| 239 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
| 240 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
| 241 | ␉efiSystemTable->ConIn = 0;␊ |
| 242 | ␊ |
| 243 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
| 244 | ␉efiSystemTable->ConOut = 0;␊ |
| 245 | ␊ |
| 246 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
| 247 | ␉efiSystemTable->StdErr = 0;␊ |
| 248 | ␊ |
| 249 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
| 250 | ␊ |
| 251 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
| 252 | ␉// boot process is exited so we can probably do without it.␊ |
| 253 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
| 254 | ␉// so I'm guessing they don't use it.␊ |
| 255 | ␉efiSystemTable->BootServices = 0;␊ |
| 256 | ␊ |
| 257 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
| 258 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
| 259 | ␊ |
| 260 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
| 261 | ␉// Must be initialized to zero before CRC32, done above.␊ |
| 262 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
| 263 | ␊ |
| 264 | ␉// --------------------------------------------------------------------␊ |
| 265 | ␉// Runtime services␊ |
| 266 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
| 267 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
| 268 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
| 269 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
| 270 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
| 271 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
| 272 | ␊ |
| 273 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
| 274 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
| 275 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
| 276 | ␉// will call these without checking to see if they are null.␊ |
| 277 | ␉//␊ |
| 278 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
| 279 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
| 280 | ␉// at least providing some sort of implementation until one can be provided␊ |
| 281 | ␉// nicely in a kext.␊ |
| 282 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
| 283 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
| 284 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 285 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 286 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 287 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
| 288 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
| 289 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
| 290 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
| 291 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
| 292 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
| 293 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
| 294 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
| 295 | ␊ |
| 296 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 297 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
| 298 | ␊ |
| 299 | ␉// --------------------------------------------------------------------␊ |
| 300 | ␉// Finish filling in the rest of the boot args that we need.␊ |
| 301 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
| 302 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
| 303 | ␊ |
| 304 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
| 305 | ␉// things like efiRuntimeServices* and what not.␊ |
| 306 | ␉//␊ |
| 307 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
| 308 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
| 309 | }␊ |
| 310 | ␊ |
| 311 | void setupEfiTables64(void)␊ |
| 312 | {␊ |
| 313 | ␉struct fake_efi_pages␊ |
| 314 | ␉{␊ |
| 315 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
| 316 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
| 317 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
| 318 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
| 319 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 320 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64)/sizeof(uint8_t)];␊ |
| 321 | ␉};␊ |
| 322 | ␊ |
| 323 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
| 324 | ␊ |
| 325 | ␉// Zero out all the tables in case fields are added later␊ |
| 326 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
| 327 | ␊ |
| 328 | ␉// --------------------------------------------------------------------␊ |
| 329 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
| 330 | ␉// functions returning int and simply return for void functions.␊ |
| 331 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
| 332 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_64, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64));␊ |
| 333 | ␊ |
| 334 | ␉// --------------------------------------------------------------------␊ |
| 335 | ␉// System table␊ |
| 336 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
| 337 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
| 338 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
| 339 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
| 340 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
| 341 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
| 342 | ␊ |
| 343 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
| 344 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
| 345 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
| 346 | ␊ |
| 347 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
| 348 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
| 349 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
| 350 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
| 351 | ␉efiSystemTable->ConIn = 0;␊ |
| 352 | ␊ |
| 353 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
| 354 | ␉efiSystemTable->ConOut = 0;␊ |
| 355 | ␊ |
| 356 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
| 357 | ␉efiSystemTable->StdErr = 0;␊ |
| 358 | ␊ |
| 359 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
| 360 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
| 361 | ␉// boot process is exited so we can probably do without it.␊ |
| 362 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
| 363 | ␉// so I'm guessing they don't use it.␊ |
| 364 | ␉efiSystemTable->BootServices = 0;␊ |
| 365 | ␊ |
| 366 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
| 367 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
| 368 | ␊ |
| 369 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 370 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
| 371 | ␊ |
| 372 | ␉// --------------------------------------------------------------------␊ |
| 373 | ␉// Runtime services␊ |
| 374 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
| 375 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
| 376 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
| 377 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
| 378 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
| 379 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
| 380 | ␊ |
| 381 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
| 382 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
| 383 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
| 384 | ␉// will call these without checking to see if they are null.␊ |
| 385 | ␉//␊ |
| 386 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
| 387 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
| 388 | ␉// at least providing some sort of implementation until one can be provided␊ |
| 389 | ␉// nicely in a kext.␊ |
| 390 | ␊ |
| 391 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
| 392 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
| 393 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 394 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 395 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 396 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 397 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 398 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 399 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 400 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 401 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 402 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 403 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
| 404 | ␊ |
| 405 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
| 406 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
| 407 | ␊ |
| 408 | ␉// --------------------------------------------------------------------␊ |
| 409 | ␉// Finish filling in the rest of the boot args that we need.␊ |
| 410 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
| 411 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
| 412 | ␊ |
| 413 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
| 414 | ␉// things like efiRuntimeServices* and what not.␊ |
| 415 | ␉//␊ |
| 416 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
| 417 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
| 418 | }␊ |
| 419 | ␊ |
| 420 | /*␊ |
| 421 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
| 422 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
| 423 | * the tsc_init function will panic very early on in kernel startup, before␊ |
| 424 | * the console is available.␊ |
| 425 | */␊ |
| 426 | ␊ |
| 427 | /*==========================================================================␊ |
| 428 | * FSB Frequency detection␊ |
| 429 | */␊ |
| 430 | ␊ |
| 431 | /* These should be const but DT__AddProperty takes char* */␊ |
| 432 | static const char TSC_Frequency_prop[] = "TSCFrequency";␊ |
| 433 | static const char FSB_Frequency_prop[] = "FSBFrequency";␊ |
| 434 | static const char CPU_Frequency_prop[] = "CPUFrequency";␊ |
| 435 | ␊ |
| 436 | /*==========================================================================␊ |
| 437 | * SMBIOS␊ |
| 438 | */␊ |
| 439 | ␊ |
| 440 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
| 441 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
| 442 | ␊ |
| 443 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
| 444 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
| 445 | ␊ |
| 446 | /* '_SM_' in little endian: */␊ |
| 447 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
| 448 | ␊ |
| 449 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
| 450 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
| 451 | ␊ |
| 452 | ␊ |
| 453 | /*==========================================================================␊ |
| 454 | * Fake EFI implementation␊ |
| 455 | */␊ |
| 456 | ␊ |
| 457 | /* These should be const but DT__AddProperty takes char* */␊ |
| 458 | static const char FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
| 459 | static const char FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
| 460 | static const char FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
| 461 | static const char FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
| 462 | static const char FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
| 463 | static const char EFI_MODE_PROP[] = "efi-mode"; //Bungo␊ |
| 464 | static const char SYSTEM_ID_PROP[] = "system-id";␊ |
| 465 | static const char SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
| 466 | static const char SYSTEM_TYPE_PROP[] = "system-type";␊ |
| 467 | static const char MODEL_PROP[] = "Model";␊ |
| 468 | static const char BOARDID_PROP[] = "board-id";␊ |
| 469 | static const char DEV_PATH_SUP[] = "DevicePathsSupported";␊ |
| 470 | static const char START_POWER_EV[] = "StartupPowerEvents";␊ |
| 471 | static const char MACHINE_SIG_PROP[] = "machine-signature";␊ |
| 472 | static EFI_UINT8 const DEVICE_PATHS_SUPPORTED[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
| 473 | static EFI_UINT8 const STARTUP_POWER_EVENTS[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };␊ |
| 474 | static EFI_UINT8 const COMPAT_MODE[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
| 475 | ␊ |
| 476 | /*␊ |
| 477 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
| 478 | */␊ |
| 479 | static EFI_CHAR16 *getSmbiosChar16(const char *key, size_t *len)␊ |
| 480 | {␊ |
| 481 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
| 482 | ␉EFI_CHAR16␉*dst = 0;␊ |
| 483 | ␉size_t␉␉ i = 0;␊ |
| 484 | ␊ |
| 485 | ␉if (!key || !(*key) || !len || !src)␊ |
| 486 | ␉{␊ |
| 487 | ␉␉return 0;␊ |
| 488 | ␉}␊ |
| 489 | ␉␊ |
| 490 | ␉*len = strlen(src);␊ |
| 491 | ␉dst = (EFI_CHAR16 *) malloc( ((*len)+1) * 2 );␊ |
| 492 | ␉for (; i < (*len); i++)␊ |
| 493 | ␉{␊ |
| 494 | ␉␉dst[i] = src[i];␊ |
| 495 | ␉}␊ |
| 496 | ␉dst[(*len)] = '\0';␊ |
| 497 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize including zero terminated CHAR16␊ |
| 498 | ␉return dst;␊ |
| 499 | }␊ |
| 500 | ␊ |
| 501 | /*␊ |
| 502 | * Must be called AFTER setupAcpi because we need to take care of correct␊ |
| 503 | * FACP content to reflect in ioregs␊ |
| 504 | */␊ |
| 505 | void setupSystemType()␊ |
| 506 | {␊ |
| 507 | ␉Node *node = DT__FindNode("/", false);␊ |
| 508 | ␉if (node == 0)␊ |
| 509 | ␉{␊ |
| 510 | ␉␉stop("Couldn't get root '/' node");␊ |
| 511 | ␉}␊ |
| 512 | ␉// we need to write this property after facp parsing␊ |
| 513 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
| 514 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
| 515 | }␊ |
| 516 | ␊ |
| 517 | static void setupEfiDeviceTree(void)␊ |
| 518 | {␊ |
| 519 | ␉// EFI_CHAR8␉*ret = 0; Bungo: not used␊ |
| 520 | ␉EFI_CHAR16␉*ret16 = 0;␊ |
| 521 | ␉size_t␉␉ len = 0;␊ |
| 522 | ␉Node␉␉*node;␊ |
| 523 | ␊ |
| 524 | ␉node = DT__FindNode("/", false);␊ |
| 525 | ␊ |
| 526 | ␉if (node == 0)␊ |
| 527 | ␉{␊ |
| 528 | ␉␉stop("Couldn't get root node");␊ |
| 529 | ␉}␊ |
| 530 | ␊ |
| 531 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
| 532 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
| 533 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
| 534 | ␉node = DT__AddChild(node, "efi");␊ |
| 535 | ␊ |
| 536 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 537 | ␉{␊ |
| 538 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char *)FIRMWARE_ABI_32_PROP_VALUE);␊ |
| 539 | ␉}␊ |
| 540 | ␉else␊ |
| 541 | ␉{␊ |
| 542 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char *)FIRMWARE_ABI_64_PROP_VALUE);␊ |
| 543 | ␉}␊ |
| 544 | ␊ |
| 545 | ␉DT__AddProperty(node, EFI_MODE_PROP, sizeof(EFI_UINT8), (EFI_UINT8 *)&bootArgs->efiMode);␊ |
| 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 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
| 573 | ␊ |
| 574 | ␉// New node: /efi/kernel-compatibility␊ |
| 575 | ␉Node *efiKernelComNode = DT__AddChild(node, "kernel-compatibility");␊ |
| 576 | ␊ |
| 577 | ␉if (MacOSVerCurrent >= MacOSVer2Int("10.9"))␊ |
| 578 | ␉{␊ |
| 579 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
| 580 | ␉}␊ |
| 581 | ␉else␊ |
| 582 | ␉{␊ |
| 583 | ␉␉DT__AddProperty(efiKernelComNode, "i386", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
| 584 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
| 585 | ␉}␊ |
| 586 | ␊ |
| 587 | ␉// Now fill in the /efi/platform Node␊ |
| 588 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform"); // "/efi/platform"␊ |
| 589 | ␊ |
| 590 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
| 591 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
| 592 | ␉// because the DT_AddProperty function does not copy its args.␊ |
| 593 | ␊ |
| 594 | ␉if (Platform.CPU.FSBFrequency != 0)␊ |
| 595 | ␉{␊ |
| 596 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
| 597 | ␉}␊ |
| 598 | ␊ |
| 599 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
| 600 | ␉if (Platform.CPU.TSCFrequency != 0)␊ |
| 601 | ␉{␊ |
| 602 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
| 603 | ␉}␊ |
| 604 | ␊ |
| 605 | ␉if (Platform.CPU.CPUFrequency != 0)␊ |
| 606 | ␉{␊ |
| 607 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
| 608 | ␉}␊ |
| 609 | ␊ |
| 610 | ␉DT__AddProperty(efiPlatformNode,START_POWER_EV, sizeof(STARTUP_POWER_EVENTS), (EFI_UINT8 *) &STARTUP_POWER_EVENTS);␊ |
| 611 | ␊ |
| 612 | ␉DT__AddProperty(efiPlatformNode,DEV_PATH_SUP, sizeof(DEVICE_PATHS_SUPPORTED), (EFI_UINT8 *) &DEVICE_PATHS_SUPPORTED);␊ |
| 613 | ␊ |
| 614 | ␉// Bungo␊ |
| 615 | ␉/* Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
| 616 | ␉if ((ret=getSystemID()))␊ |
| 617 | ␉{␊ |
| 618 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *) ret);␊ |
| 619 | ␉}␊ |
| 620 | ␉*/␊ |
| 621 | ␊ |
| 622 | ␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *)Platform.UUID);␊ |
| 623 | ␊ |
| 624 | ␉// Export SystemSerialNumber if present␊ |
| 625 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
| 626 | ␉{␊ |
| 627 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
| 628 | ␉}␊ |
| 629 | ␊ |
| 630 | ␉// Export Model if present␊ |
| 631 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
| 632 | ␉{␊ |
| 633 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
| 634 | ␉}␊ |
| 635 | ␊ |
| 636 | ␉// Fill /efi/device-properties node.␊ |
| 637 | ␉setupDeviceProperties(node);␊ |
| 638 | }␊ |
| 639 | ␊ |
| 640 | /*␊ |
| 641 | * Must be called AFTER getSmbios␊ |
| 642 | */␊ |
| 643 | void setupBoardId()␊ |
| 644 | {␊ |
| 645 | ␉Node *node;␊ |
| 646 | ␉node = DT__FindNode("/", false);␊ |
| 647 | ␉if (node == 0)␊ |
| 648 | ␉{␊ |
| 649 | ␉␉stop("Couldn't get root '/' node");␊ |
| 650 | ␉}␊ |
| 651 | ␉const char *boardid = getStringForKey("SMboardproduct", &bootInfo->smbiosConfig); // SMboardserial␊ |
| 652 | ␉if (boardid)␊ |
| 653 | ␉{␊ |
| 654 | ␉␉DT__AddProperty(node, BOARDID_PROP, strlen(boardid)+1, (EFI_CHAR16 *)boardid);␊ |
| 655 | ␉}␊ |
| 656 | }␊ |
| 657 | ␊ |
| 658 | /*␊ |
| 659 | * Populate the chosen node␊ |
| 660 | */␊ |
| 661 | void setupChosenNode()␊ |
| 662 | {␊ |
| 663 | ␉Node *chosenNode;␊ |
| 664 | ␉chosenNode = DT__FindNode("/chosen", false);␊ |
| 665 | ␉unsigned long adler32 = 0;␊ |
| 666 | ␊ |
| 667 | ␉if (chosenNode == NULL)␊ |
| 668 | ␉{␊ |
| 669 | ␉␉stop("setupChosenNode: Couldn't get '/chosen' node");␊ |
| 670 | ␉}␊ |
| 671 | ␊ |
| 672 | ␉// Only accept a UUID with the correct length.␊ |
| 673 | ␉if (strlen(gBootUUIDString) == 36)␊ |
| 674 | ␉{␊ |
| 675 | ␉␉DT__AddProperty(chosenNode, "boot-uuid", 37, gBootUUIDString);␊ |
| 676 | ␉}␊ |
| 677 | ␊ |
| 678 | ␉DT__AddProperty(chosenNode, "boot-args", sizeof(bootArgs->CommandLine), (EFI_UINT8 *)bootArgs->CommandLine);␊ |
| 679 | ␊ |
| 680 | ␉// Adding the default kernel name (mach_kernel) for kextcache.␊ |
| 681 | ␉DT__AddProperty(chosenNode, "boot-file", sizeof(bootInfo->bootFile), bootInfo->bootFile);␊ |
| 682 | ␊ |
| 683 | //␉DT__AddProperty(chosenNode, "boot-device-path", bootDPsize, gBootDP);␊ |
| 684 | ␊ |
| 685 | //␉DT__AddProperty(chosenNode, "boot-file-path", bootFPsize, gBootFP);␊ |
| 686 | ␊ |
| 687 | ␉DT__AddProperty(chosenNode, "boot-kernelcache-adler32", sizeof(unsigned long), &adler32);␊ |
| 688 | ␊ |
| 689 | ␉DT__AddProperty(chosenNode, MACHINE_SIG_PROP, sizeof(Platform.HWSignature), (EFI_UINT32 *)&Platform.HWSignature);␊ |
| 690 | ␊ |
| 691 | ␉if ( MacOSVerCurrent >= MacOSVer2Int("10.10") ) // Yosemite+␊ |
| 692 | ␉{␊ |
| 693 | ␉␉//␊ |
| 694 | ␉␉// Pike R. Alpha - 12 October 2014␊ |
| 695 | ␉␉//␊ |
| 696 | ␉␉UInt8 index = 0;␊ |
| 697 | ␉␉EFI_UINT16 PMTimerValue = 0, PMRepeatCount = 0xffff;␊ |
| 698 | ␊ |
| 699 | #if RANDOMSEED␊ |
| 700 | ␉␉EFI_UINT32 randomValue = 0, cpuTick = 0;␊ |
| 701 | ␉␉EFI_UINT32 ecx = 0, edx = 0, esi = 0, edi = 0;␊ |
| 702 | #else␊ |
| 703 | ␉␉EFI_UINT32 randomValue, tempValue, cpuTick;␊ |
| 704 | ␉␉EFI_UINT32 ecx, esi, edi = 0;␊ |
| 705 | ␉␉EFI_UINT64 rcx, rdx, rsi, rdi;␊ |
| 706 | ␊ |
| 707 | ␉␉randomValue = tempValue = ecx = esi = edi = 0;␉␉␉␉␉// xor␉␉%ecx,␉%ecx␊ |
| 708 | ␉␉cpuTick = rcx = rdx = rsi = rdi = 0;␊ |
| 709 | #endif␊ |
| 710 | ␉␉// LEAF_1 - Feature Information (Function 01h).␊ |
| 711 | ␉␉if (Platform.CPU.CPUID[CPUID_1][2] & 0x40000000)␉␉␉␉// Checking ecx:bit-30␊ |
| 712 | ␉␉{␊ |
| 713 | ␉␉␉//␊ |
| 714 | ␉␉␉// i5/i7 Ivy Bridge and Haswell processors with RDRAND support.␊ |
| 715 | ␉␉␉//␊ |
| 716 | ␉␉␉EFI_UINT32 seedBuffer[16] = {0};␊ |
| 717 | ␉␉␉//␊ |
| 718 | ␉␉␉// Main loop to get 16 dwords (four bytes each).␊ |
| 719 | ␉␉␉//␊ |
| 720 | ␉␉␉for (index = 0; index < 16; index++)␉␉␉␉␉// 0x17e12:␊ |
| 721 | ␉␉␉{␊ |
| 722 | ␉␉␉␉randomValue = computeRand();␉␉␉␉␉// callq␉0x18e20␊ |
| 723 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉␉␉// callq␉0x121a7␊ |
| 724 | ␉␉␉␉randomValue = (randomValue ^ cpuTick);␉␉␉␉// xor␉␉%rdi,␉%rax␊ |
| 725 | ␉␉␉␉seedBuffer[index] = randomValue;␉␉␉␉// mov␉␉%rax,(%r15,%rsi,8)␊ |
| 726 | ␉␉␉}␉␉␉␉␉␉␉␉␉// jb␉␉0x17e12␊ |
| 727 | ␊ |
| 728 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT32 *) &seedBuffer);␊ |
| 729 | ␉␉}␊ |
| 730 | ␉␉else␊ |
| 731 | ␉␉{␊ |
| 732 | ␉␉␉//␊ |
| 733 | ␉␉␉// All other processors without RDRAND support.␊ |
| 734 | ␉␉␉//␊ |
| 735 | ␉␉␉EFI_UINT8 seedBuffer[64] = {0};␊ |
| 736 | ␉␉␉//␊ |
| 737 | ␉␉␉// Main loop to get the 64 bytes.␊ |
| 738 | ␉␉␉//␊ |
| 739 | ␉␉␉do␉␉␉␉␉␉␉␉␉// 0x17e55:␊ |
| 740 | ␉␉␉{␊ |
| 741 | ␉␉␉␉//␊ |
| 742 | ␉␉␉␉// FIXME: PM Timer is usually @ 0x408, but its position is relocatable␊ |
| 743 | ␉␉␉␉// via PCI-to-ISA bridge. The location is reported in ACPI FADT,␊ |
| 744 | ␉␉␉␉// PM Timer Block address - zenith432␊ |
| 745 | ␉␉␉␉//␊ |
| 746 | ␉␉␉␉PMTimerValue = inw(0x408);␉␉␉␉␉// in␉␉(%dx),␉%ax␊ |
| 747 | ␉␉␉␉esi = PMTimerValue;␉␉␉␉␉␉// movzwl␉%ax,␉%esi␊ |
| 748 | ␊ |
| 749 | ␉␉␉␉if (esi < ecx)␉␉␉␉␉␉␉// cmp␉␉%ecx,␉%esi␊ |
| 750 | ␉␉␉␉{␊ |
| 751 | ␉␉␉␉␉/*␊ |
| 752 | ␉␉␉␉␉ * This is a workaround to prevent an infinite loop␊ |
| 753 | ␉␉␉␉␉ * if PMTimer is not at port 0x408 - zenith432␊ |
| 754 | ␉␉␉␉␉ */␊ |
| 755 | ␉␉␉␉␉if (PMRepeatCount)␊ |
| 756 | ␉␉␉␉␉{␊ |
| 757 | ␉␉␉␉␉␉--PMRepeatCount;␊ |
| 758 | ␉␉␉␉␉␉continue;␉␉␉␉␉␉// jb␉␉0x17e55␉␉(retry)␊ |
| 759 | ␉␉␉␉␉}␊ |
| 760 | ␉␉␉␉}␊ |
| 761 | ␉␉␉␉else␊ |
| 762 | ␉␉␉␉{␊ |
| 763 | ␉␉␉␉␉PMRepeatCount = 0xffff;␊ |
| 764 | ␉␉␉␉}␊ |
| 765 | ␊ |
| 766 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉␉␉// callq␉0x121a7␊ |
| 767 | //␉␉␉␉printf("value: 0x%x\n", getCPUTick());␊ |
| 768 | ␊ |
| 769 | #if RANDOMSEED␊ |
| 770 | ␉␉␉␉ecx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
| 771 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
| 772 | ␉␉␉␉edx = (cpuTick >> 0x10);␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
| 773 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
| 774 | ␉␉␉␉edi = esi;␉␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
| 775 | ␉␉␉␉edi = (edi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
| 776 | ␉␉␉␉edi = (edi ^ ecx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
| 777 | ␉␉␉␉edi = (edi ^ edx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
| 778 | ␊ |
| 779 | ␉␉␉␉seedBuffer[index] = (edi & 0xff);␊ |
| 780 | #else␊ |
| 781 | ␉␉␉␉rcx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
| 782 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
| 783 | ␉␉␉␉rdx = (cpuTick >> 0x10);␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
| 784 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
| 785 | ␉␉␉␉/*␊ |
| 786 | ␉␉␉␉ * Note: In x86 assembly, rXX is upper part of eXX register.␊ |
| 787 | ␉␉␉␉ * In C they're different variables.␊ |
| 788 | ␉␉␉␉ * The code is identical with or without RANDOMSEED. - zenith432␊ |
| 789 | ␉␉␉␉ */␊ |
| 790 | ␉␉␉␉rdi = rsi = esi;␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
| 791 | ␉␉␉␉rdi = (rdi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
| 792 | ␉␉␉␉rdi = (rdi ^ rcx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
| 793 | ␉␉␉␉rdi = (rdi ^ rdx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
| 794 | ␉␉␉␉edi = (EFI_UINT32) rdi;␊ |
| 795 | ␊ |
| 796 | ␉␉␉␉seedBuffer[index] = (rdi & 0xff);␉␉␉␉// mov␉␉%dil,␉(%r15,%r12,1)␊ |
| 797 | #endif␊ |
| 798 | ␉␉␉␉edi = (edi & 0x2f);␉␉␉␉␉␉// and␉␉$0x2f,␉%edi␊ |
| 799 | ␉␉␉␉edi = (edi + esi);␉␉␉␉␉␉// add␉␉%esi,␉%edi␊ |
| 800 | ␉␉␉␉index++;␉␉␉␉␉␉␉// inc␉␉r12␊ |
| 801 | ␉␉␉␉ecx = (edi & 0xffff);␉␉␉␉␉␉// movzwl␉%di,␉%ecx␊ |
| 802 | ␊ |
| 803 | ␉␉␉} while (index < 64);␉␉␉␉␉␉␉// cmp␉␉%r14d,␉%r12d␊ |
| 804 | ␉␉␉// jne␉␉0x17e55␉␉(next)␊ |
| 805 | ␊ |
| 806 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT8 *) &seedBuffer);␊ |
| 807 | ␊ |
| 808 | ␉␉}␊ |
| 809 | ␉}␊ |
| 810 | ␊ |
| 811 | ␉// Micky1979 : MIMIC booter entry for El Capitan␊ |
| 812 | ␉if ( MacOSVerCurrent >= MacOSVer2Int("10.11") ) // El Capitan␊ |
| 813 | ␉{␊ |
| 814 | ␉␉verbose("Adding booter spec to the Platform Expert \n");␊ |
| 815 | ␉␉// booter-build-time (Fri May 22 19:06:42 PDT 2015) DP1␊ |
| 816 | ␉␉// booter-build-time (Fri Jul 24 17:39:22 PDT 2015) DP7␊ |
| 817 | ␉␉DT__AddProperty(chosenNode, "booter-build-time", sizeof(I386BOOT_BUILDDATE), I386BOOT_BUILDDATE);␊ |
| 818 | ␉␉// booter-name (boot.efi)␊ |
| 819 | ␉␉DT__AddProperty(chosenNode, "booter-name", sizeof("Enoch"), "Enoch");␊ |
| 820 | ␉␉// booter-version (version:295.0.0.1.1) DP1␊ |
| 821 | ␉␉// booter-version (version:304) DP7␊ |
| 822 | ␉␉DT__AddProperty(chosenNode, "booter-version", sizeof(I386BOOT_CHAMELEONREVISION), I386BOOT_CHAMELEONREVISION);␊ |
| 823 | ␉}␊ |
| 824 | }␊ |
| 825 | ␊ |
| 826 | /*␊ |
| 827 | * Load the smbios.plist override config file if any␊ |
| 828 | */␊ |
| 829 | static void setupSmbiosConfigFile(const char *filename)␊ |
| 830 | {␊ |
| 831 | ␉char␉␉dirSpecSMBIOS[128];␊ |
| 832 | ␉const char␉*override_pathname = NULL;␊ |
| 833 | ␉int␉␉len = 0, err = 0;␊ |
| 834 | ␉extern void scan_mem();␊ |
| 835 | ␊ |
| 836 | ␉// Take in account user overriding␊ |
| 837 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->chameleonConfig) && len > 0)␊ |
| 838 | ␉{␊ |
| 839 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
| 840 | ␉␉strcpy(dirSpecSMBIOS, override_pathname);␊ |
| 841 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
| 842 | ␉}␊ |
| 843 | ␉else␊ |
| 844 | ␉{␊ |
| 845 | ␉␉// Check selected volume's Extra.␊ |
| 846 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
| 847 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
| 848 | ␉}␊ |
| 849 | ␊ |
| 850 | ␉if (err)␊ |
| 851 | ␉{␊ |
| 852 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
| 853 | ␉}␊ |
| 854 | ␊ |
| 855 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options␊ |
| 856 | ␉// loaded as well, as opposed to when it was in scan_platform(); also load the orig. smbios␊ |
| 857 | ␉// so that we can access dmi info, without patching the smbios yet.␊ |
| 858 | ␉scan_mem(); ␊ |
| 859 | }␊ |
| 860 | ␊ |
| 861 | /*␊ |
| 862 | * Installs all the needed configuration table entries␊ |
| 863 | */␊ |
| 864 | static void setupEfiConfigurationTable()␊ |
| 865 | {␊ |
| 866 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
| 867 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
| 868 | ␊ |
| 869 | ␉setupBoardId(); //need to be called after getSmbios␊ |
| 870 | ␊ |
| 871 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
| 872 | ␉setupAcpi();␊ |
| 873 | ␊ |
| 874 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
| 875 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 876 | ␉{␊ |
| 877 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
| 878 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
| 879 | ␉}␊ |
| 880 | ␉else␊ |
| 881 | ␉{␊ |
| 882 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
| 883 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
| 884 | ␉}␊ |
| 885 | ␊ |
| 886 | ␉// Setup the chosen node␊ |
| 887 | ␉setupChosenNode();␊ |
| 888 | }␊ |
| 889 | ␊ |
| 890 | void saveOriginalSMBIOS(void)␊ |
| 891 | {␊ |
| 892 | ␉Node *node;␊ |
| 893 | ␉SMBEntryPoint *origeps;␊ |
| 894 | ␉void *tableAddress;␊ |
| 895 | ␊ |
| 896 | ␉node = DT__FindNode("/efi/platform", false);␊ |
| 897 | ␉if (!node)␊ |
| 898 | ␉{␊ |
| 899 | ␉␉DBG("saveOriginalSMBIOS: '/efi/platform' node not found\n");␊ |
| 900 | ␉␉return;␊ |
| 901 | ␉}␊ |
| 902 | ␊ |
| 903 | ␉origeps = getSmbios(SMBIOS_ORIGINAL);␊ |
| 904 | ␉if (!origeps)␊ |
| 905 | ␉{␊ |
| 906 | ␉␉DBG("saveOriginalSMBIOS: original SMBIOS not found\n");␊ |
| 907 | ␉␉return;␊ |
| 908 | ␉}␊ |
| 909 | ␊ |
| 910 | ␉tableAddress = (void *)AllocateKernelMemory(origeps->dmi.tableLength);␊ |
| 911 | ␉if (!tableAddress)␊ |
| 912 | ␉{␊ |
| 913 | ␉␉DBG("saveOriginalSMBIOS: can not allocate memory for original SMBIOS\n");␊ |
| 914 | ␉␉return;␊ |
| 915 | ␉}␊ |
| 916 | ␊ |
| 917 | ␉memcpy(tableAddress, (void *)origeps->dmi.tableAddress, origeps->dmi.tableLength);␊ |
| 918 | ␉DT__AddProperty(node, "SMBIOS", origeps->dmi.tableLength, tableAddress);␊ |
| 919 | }␊ |
| 920 | ␊ |
| 921 | /*␊ |
| 922 | * Entrypoint from boot.c␊ |
| 923 | */␊ |
| 924 | void setupFakeEfi(void)␊ |
| 925 | {␊ |
| 926 | ␉// Generate efi device strings␊ |
| 927 | ␉setup_pci_devs(root_pci_dev);␊ |
| 928 | ␊ |
| 929 | ␉readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
| 930 | ␊ |
| 931 | ␉// load smbios.plist file if any␊ |
| 932 | ␉setupSmbiosConfigFile("smbios.plist");␊ |
| 933 | ␊ |
| 934 | ␉setupSMBIOSTable();␊ |
| 935 | ␊ |
| 936 | ␉// Initialize the base table␊ |
| 937 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
| 938 | ␉{␊ |
| 939 | ␉␉setupEfiTables32();␊ |
| 940 | ␉}␊ |
| 941 | ␉else␊ |
| 942 | ␉{␊ |
| 943 | ␉␉setupEfiTables64();␊ |
| 944 | ␉}␊ |
| 945 | ␊ |
| 946 | ␉// Initialize the device tree␊ |
| 947 | ␉setupEfiDeviceTree();␊ |
| 948 | ␊ |
| 949 | ␉saveOriginalSMBIOS();␊ |
| 950 | ␊ |
| 951 | ␉// Add configuration table entries to both the services table and the device tree␊ |
| 952 | ␉setupEfiConfigurationTable();␊ |
| 953 | }␊ |
| 954 | |
