| 1 | /*␊ |
| 2 | * Copyright 2007 David F. Elliott. All rights reserved.␊ |
| 3 | */␊ |
| 4 | ␊ |
| 5 | #include "libsaio.h"␊ |
| 6 | #include "boot.h"␊ |
| 7 | #include "bootstruct.h" /* for bootArgs */␊ |
| 8 | #include "efi.h"␊ |
| 9 | #include "acpi.h"␊ |
| 10 | #include "fake_efi.h"␊ |
| 11 | #include "efi_tables.h"␊ |
| 12 | #include "platform.h"␊ |
| 13 | #include "dsdt_patcher.h"␊ |
| 14 | #include "smbios_patcher.h"␊ |
| 15 | #include "device_inject.h"␊ |
| 16 | #include "pci.h"␊ |
| 17 | #include "sl.h"␊ |
| 18 | ␊ |
| 19 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
| 20 | ␊ |
| 21 | /*␊ |
| 22 | Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
| 23 | have EFI. Modifying the kernel source to not require EFI is of course␊ |
| 24 | possible but would have to be maintained as a separate patch because it is␊ |
| 25 | unlikely that Apple wishes to add legacy support to their kernel.␊ |
| 26 | ␊ |
| 27 | As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
| 28 | the intention was clearly to modify this booter to provide EFI-like structures␊ |
| 29 | to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
| 30 | makes a lot of sense from an engineering point of view as it means the kernel␊ |
| 31 | for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
| 32 | DTK systems so long as the kernel checked to ensure the boot tables were␊ |
| 33 | filled in appropriately. Modern xnu requires a system table and a runtime␊ |
| 34 | services table and performs no checks whatsoever to ensure the pointers to␊ |
| 35 | these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
| 36 | early on in the boot process if the system table pointer is zero.␊ |
| 37 | ␊ |
| 38 | Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
| 39 | Frequency to be a property in the /efi/platform node of the device tree or else␊ |
| 40 | it panics the bootstrap process very early on.␊ |
| 41 | ␊ |
| 42 | As of this writing, the current implementation found here is good enough␊ |
| 43 | to make the currently available xnu kernel boot without modification on a␊ |
| 44 | system with an appropriate processor. With a minor source modification to␊ |
| 45 | the tsc_init function to remove the explicit check for Core or Core 2␊ |
| 46 | processors the kernel can be made to boot on other processors so long as␊ |
| 47 | the code can be executed by the processor and the machine contains the␊ |
| 48 | necessary hardware.␊ |
| 49 | */␊ |
| 50 | ␊ |
| 51 | ␊ |
| 52 | /*==========================================================================␊ |
| 53 | * Utility function to make a device tree string from an EFI_GUID␊ |
| 54 | */␊ |
| 55 | ␊ |
| 56 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
| 57 | {␊ |
| 58 | char *string = malloc(37);␊ |
| 59 | efi_guid_unparse_upper(pGuid, string);␊ |
| 60 | return string;␊ |
| 61 | }␊ |
| 62 | ␊ |
| 63 | ␊ |
| 64 | /*==========================================================================␊ |
| 65 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
| 66 | */␊ |
| 67 | static uint64_t ptov64(uint32_t addr)␊ |
| 68 | {␊ |
| 69 | return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
| 70 | }␊ |
| 71 | ␊ |
| 72 | ␊ |
| 73 | /*==========================================================================␊ |
| 74 | * Fake EFI implementation␊ |
| 75 | */␊ |
| 76 | ␊ |
| 77 | /* Identify ourselves as the EFI firmware vendor */␊ |
| 78 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
| 79 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
| 80 | ␊ |
| 81 | /* Default platform system_id (fix by IntVar) */␊ |
| 82 | static EFI_CHAR8 const SYSTEM_ID[] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10};//random value gen by uuidgen␊ |
| 83 | ␊ |
| 84 | /* Just a ret instruction */␊ |
| 85 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
| 86 | /* movl $0x80000003,%eax; ret */␊ |
| 87 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
| 88 | ␊ |
| 89 | ␊ |
| 90 | /* We use the fake_efi_pages struct so that we only need to do one kernel␊ |
| 91 | * memory allocation for all needed EFI data. Otherwise, small allocations␊ |
| 92 | * like the FIRMWARE_VENDOR string would take up an entire page.␊ |
| 93 | * NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
| 94 | * It is absolutely not intended to be publicly exposed anywhere␊ |
| 95 | * We say pages (plural) although right now we are well within the 1 page size␊ |
| 96 | * and probably will stay that way.␊ |
| 97 | */␊ |
| 98 | struct fake_efi_pages␊ |
| 99 | {␊ |
| 100 | EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
| 101 | EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
| 102 | EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
| 103 | EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
| 104 | uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 105 | uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
| 106 | };␊ |
| 107 | ␊ |
| 108 | EFI_SYSTEM_TABLE_64 *gST = NULL;␊ |
| 109 | Node *gEfiConfigurationTableNode = NULL;␊ |
| 110 | ␊ |
| 111 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
| 112 | {␊ |
| 113 | EFI_UINTN i = gST->NumberOfTableEntries;␊ |
| 114 | /* We only do adds, not modifications and deletes like InstallConfigurationTable */␊ |
| 115 | if(i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
| 116 | stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
| 117 | ␊ |
| 118 | if(pGuid == NULL)␊ |
| 119 | return EFI_INVALID_PARAMETER;␊ |
| 120 | ␊ |
| 121 | if(table != NULL)␊ |
| 122 | {␊ |
| 123 | ␉/* FIXME␊ |
| 124 | ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
| 125 | ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
| 126 | ␊ |
| 127 | ++gST->NumberOfTableEntries;␊ |
| 128 | ␉␉ */␊ |
| 129 | Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
| 130 | ␊ |
| 131 | /* Use the pointer to the GUID we just stuffed into the system table */␊ |
| 132 | ␉ ␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
| 133 | ␊ |
| 134 | /* The "table" property is the 32-bit (in our implementation) physical address of the table */␊ |
| 135 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
| 136 | ␊ |
| 137 | /* Assume the alias pointer is a global or static piece of data */␊ |
| 138 | if(alias != NULL)␊ |
| 139 | DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
| 140 | ␊ |
| 141 | return EFI_SUCCESS;␊ |
| 142 | }␊ |
| 143 | return EFI_UNSUPPORTED;␊ |
| 144 | }␊ |
| 145 | ␊ |
| 146 | static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
| 147 | {␊ |
| 148 | efiSystemTable->Hdr.CRC32 = 0;␊ |
| 149 | efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
| 150 | }␊ |
| 151 | ␊ |
| 152 | /*␊ |
| 153 | What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
| 154 | runtime services table.␊ |
| 155 | ␊ |
| 156 | Because we build against modern headers with kBootArgsRevision 4 we␊ |
| 157 | also take care to set efiMode = 32.␊ |
| 158 | */␊ |
| 159 | void␊ |
| 160 | setupEfiTables(void)␊ |
| 161 | {␊ |
| 162 | struct fake_efi_pages *fakeEfiPages= (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
| 163 | ␊ |
| 164 | /* Zero out all the tables in case fields are added later */␊ |
| 165 | bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
| 166 | ␊ |
| 167 | /* --------------------------------------------------------------------␊ |
| 168 | * Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
| 169 | * functions returning int and simply return for void functions.␊ |
| 170 | */␊ |
| 171 | memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
| 172 | memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
| 173 | ␊ |
| 174 | /* -------------------------------------------------------------------- */␊ |
| 175 | /* System table */␊ |
| 176 | EFI_SYSTEM_TABLE_64 *efiSystemTable = gST = &fakeEfiPages->efiSystemTable;␊ |
| 177 | efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
| 178 | efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
| 179 | efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
| 180 | efiSystemTable->Hdr.CRC32 = 0; /* Initialize to zero and then do CRC32 */␊ |
| 181 | efiSystemTable->Hdr.Reserved = 0;␊ |
| 182 | ␊ |
| 183 | efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
| 184 | memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
| 185 | efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
| 186 | ␊ |
| 187 | /* XXX: We may need to have basic implementations of ConIn/ConOut/StdErr */␊ |
| 188 | /* The EFI spec states that all handles are invalid after boot services have been␊ |
| 189 | * exited so we can probably get by with leaving the handles as zero. */␊ |
| 190 | efiSystemTable->ConsoleInHandle = 0;␊ |
| 191 | efiSystemTable->ConIn = 0;␊ |
| 192 | ␊ |
| 193 | efiSystemTable->ConsoleOutHandle = 0;␊ |
| 194 | efiSystemTable->ConOut = 0;␊ |
| 195 | ␊ |
| 196 | efiSystemTable->StandardErrorHandle = 0;␊ |
| 197 | efiSystemTable->StdErr = 0;␊ |
| 198 | ␊ |
| 199 | efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
| 200 | /* According to the EFI spec, BootServices aren't valid after the␊ |
| 201 | * boot process is exited so we can probably do without it.␊ |
| 202 | * Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
| 203 | * so I'm guessing they don't use it.␊ |
| 204 | */␊ |
| 205 | efiSystemTable->BootServices = 0;␊ |
| 206 | ␊ |
| 207 | efiSystemTable->NumberOfTableEntries = 0;␊ |
| 208 | efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
| 209 | ␊ |
| 210 | ␊ |
| 211 | /* We're done. Now CRC32 the thing so the kernel will accept it */␊ |
| 212 | fixupEfiSystemTableCRC32(efiSystemTable);␊ |
| 213 | ␊ |
| 214 | /* -------------------------------------------------------------------- */␊ |
| 215 | /* Runtime services */␊ |
| 216 | EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
| 217 | efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
| 218 | efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
| 219 | efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
| 220 | efiRuntimeServices->Hdr.CRC32 = 0;␊ |
| 221 | efiRuntimeServices->Hdr.Reserved = 0;␊ |
| 222 | ␊ |
| 223 | /* There are a number of function pointers in the efiRuntimeServices table.␊ |
| 224 | * These are the Foundation (e.g. core) services and are expected to be present on␊ |
| 225 | * all EFI-compliant machines. Some kernel extensions (notably AppleEFIRuntime)␊ |
| 226 | * will call these without checking to see if they are null.␊ |
| 227 | *␊ |
| 228 | * We don't really feel like doing an EFI implementation in the bootloader␊ |
| 229 | * but it is nice if we can at least prevent a complete crash by␊ |
| 230 | * at least providing some sort of implementation until one can be provided␊ |
| 231 | * nicely in a kext.␊ |
| 232 | */␊ |
| 233 | void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
| 234 | void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
| 235 | efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 236 | efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 237 | efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 238 | efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 239 | efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 240 | efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 241 | efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 242 | efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 243 | efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 244 | efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
| 245 | efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
| 246 | ␊ |
| 247 | /* We're done. Now CRC32 the thing so the kernel will accept it */␊ |
| 248 | efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
| 249 | ␊ |
| 250 | ␊ |
| 251 | /* -------------------------------------------------------------------- */␊ |
| 252 | /* Finish filling in the rest of the boot args that we need. */␊ |
| 253 | bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
| 254 | bootArgs->efiMode = kBootArgsEfiMode64;␊ |
| 255 | ␊ |
| 256 | /* The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
| 257 | * things like efiRuntimeServices* and what not.␊ |
| 258 | *␊ |
| 259 | * In fact, the only code that seems to use that is the hibernate code so it␊ |
| 260 | * knows not to save the pages. It even checks to make sure its nonzero.␊ |
| 261 | */␊ |
| 262 | }␊ |
| 263 | ␊ |
| 264 | /*␊ |
| 265 | In addition to the EFI tables there is also the EFI device tree node.␊ |
| 266 | In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
| 267 | the tsc_init function will panic very early on in kernel startup, before␊ |
| 268 | the console is available.␊ |
| 269 | */␊ |
| 270 | ␊ |
| 271 | /*==========================================================================␊ |
| 272 | * FSB Frequency detection␊ |
| 273 | */␊ |
| 274 | ␊ |
| 275 | /* These should be const but DT__AddProperty takes char* */␊ |
| 276 | static char TSC_Frequency_prop[] = "TSCFrequency";␊ |
| 277 | static char FSB_Frequency_prop[] = "FSBFrequency";␊ |
| 278 | static char CPU_Frequency_prop[] = "CPUFrequency";␊ |
| 279 | ␊ |
| 280 | /*==========================================================================␊ |
| 281 | * SystemType␊ |
| 282 | */␊ |
| 283 | ␊ |
| 284 | static char SystemType_prop[] = "system-type";␊ |
| 285 | ␊ |
| 286 | /*==========================================================================␊ |
| 287 | * SMBIOS␊ |
| 288 | */␊ |
| 289 | ␊ |
| 290 | /* From Foundation/Efi/Guid/Smbios/SmBios.h */␊ |
| 291 | /* Modified to wrap Data4 array init with {} */␊ |
| 292 | #define EFI_SMBIOS_TABLE_GUID \␊ |
| 293 | { \␊ |
| 294 | 0xeb9d2d31, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} \␊ |
| 295 | }␊ |
| 296 | ␊ |
| 297 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
| 298 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
| 299 | ␊ |
| 300 | #define SMBIOS_RANGE_START 0x000F0000␊ |
| 301 | #define SMBIOS_RANGE_END 0x000FFFFF␊ |
| 302 | ␊ |
| 303 | /* '_SM_' in little endian: */␊ |
| 304 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
| 305 | ␊ |
| 306 | #define EFI_ACPI_TABLE_GUID \␊ |
| 307 | { \␊ |
| 308 | 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
| 309 | }␊ |
| 310 | ␊ |
| 311 | #define EFI_ACPI_20_TABLE_GUID \␊ |
| 312 | { \␊ |
| 313 | 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
| 314 | }␊ |
| 315 | ␊ |
| 316 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
| 317 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
| 318 | ␊ |
| 319 | ␊ |
| 320 | /*==========================================================================␊ |
| 321 | * Fake EFI implementation␊ |
| 322 | */␊ |
| 323 | ␊ |
| 324 | /* These should be const but DT__AddProperty takes char* */␊ |
| 325 | static char FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
| 326 | static char FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
| 327 | static char FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
| 328 | static char FIRMWARE_ABI_PROP_VALUE[] = "EFI64";␊ |
| 329 | ␊ |
| 330 | void␊ |
| 331 | setupEfiDeviceTree(void)␊ |
| 332 | {␊ |
| 333 | Node *node;␊ |
| 334 | node = DT__FindNode("/", false);␊ |
| 335 | if (node == 0) {␊ |
| 336 | stop("Couldn't get root node");␊ |
| 337 | }␊ |
| 338 | ␊ |
| 339 | /* Export system-type */␊ |
| 340 | verbose("Using system-type=0x%02x\n", Platform.Type);␊ |
| 341 | DT__AddProperty(node, SystemType_prop, sizeof(Platform.Type), &Platform.Type);␊ |
| 342 | ␊ |
| 343 | /* We could also just do DT__FindNode("/efi/platform", true)␊ |
| 344 | * But I think eventually we want to fill stuff in the efi node␊ |
| 345 | * too so we might as well create it so we have a pointer for it too.␊ |
| 346 | */␊ |
| 347 | node = DT__AddChild(node, "efi");␊ |
| 348 | ␊ |
| 349 | DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
| 350 | DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_PROP_VALUE), (char*)FIRMWARE_ABI_PROP_VALUE);␊ |
| 351 | DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
| 352 | ␊ |
| 353 | /* TODO: Fill in other efi properties if necessary */␊ |
| 354 | ␊ |
| 355 | /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
| 356 | * is set up. That is, name and table properties */␊ |
| 357 | Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
| 358 | ␊ |
| 359 | /* The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
| 360 | * Sice the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
| 361 | * for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
| 362 | * the only thing to use a non-malloc'd pointer for something in the DT␊ |
| 363 | */␊ |
| 364 | DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST->RuntimeServices);␊ |
| 365 | ␊ |
| 366 | /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
| 367 | * all of the configuration tables needed by various kernel extensions.␊ |
| 368 | */␊ |
| 369 | gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
| 370 | ␊ |
| 371 | /* Now fill in the /efi/platform Node */␊ |
| 372 | Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
| 373 | ␊ |
| 374 | /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
| 375 | * the value in the fsbFrequency global and not an malloc'd pointer␊ |
| 376 | * because the DT_AddProperty function does not copy its args.␊ |
| 377 | */␊ |
| 378 | if(Platform.CPU.FSBFrequency != 0)␊ |
| 379 | DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
| 380 | ␊ |
| 381 | ␉/* Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
| 382 | */␊ |
| 383 | if(Platform.CPU.TSCFrequency != 0)␊ |
| 384 | DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
| 385 | if(Platform.CPU.CPUFrequency != 0)␊ |
| 386 | DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
| 387 | ␊ |
| 388 | /* Fill /efi/device-properties node.␊ |
| 389 | */␊ |
| 390 | setupDeviceProperties(node);␊ |
| 391 | }␊ |
| 392 | ␊ |
| 393 | /* Installs all the needed configuration table entries */␊ |
| 394 | void setupEfiConfigurationTable()␊ |
| 395 | {␊ |
| 396 | smbios_p = (EFI_PTR32)getSmbios();␊ |
| 397 | addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
| 398 | ␊ |
| 399 | // Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
| 400 | setupAcpi();␊ |
| 401 | ␊ |
| 402 | // We've obviously changed the count.. so fix up the CRC32␊ |
| 403 | fixupEfiSystemTableCRC32(gST);␊ |
| 404 | }␊ |
| 405 | ␊ |
| 406 | void setupEfiDevices(void)␊ |
| 407 | {␊ |
| 408 | ␉setup_pci_devs(root_pci_dev);␊ |
| 409 | }␊ |
| 410 | ␊ |
| 411 | /* Entrypoint from boot.c */␊ |
| 412 | void setupFakeEfi(void)␊ |
| 413 | {␊ |
| 414 | ␉// Generate efi device strings ␊ |
| 415 | ␉setupEfiDevices();␊ |
| 416 | ␉␊ |
| 417 | ␉// Initialize the base table␊ |
| 418 | ␉setupEfiTables();␊ |
| 419 | ␉␊ |
| 420 | // Initialize the device tree␊ |
| 421 | setupEfiDeviceTree();␊ |
| 422 | ␊ |
| 423 | // Add configuration table entries to both the services table and the device tree␊ |
| 424 | setupEfiConfigurationTable();␊ |
| 425 | }␊ |
| 426 | |
