4 Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
5 Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 // The package level header files this module uses
23 // The Library classes this module consumes
25 #include <Library/BaseLib.h>
26 #include <Library/DebugLib.h>
27 #include <Library/HobLib.h>
28 #include <Library/IoLib.h>
29 #include <Library/MemoryAllocationLib.h>
30 #include <Library/PcdLib.h>
31 #include <Library/PciLib.h>
32 #include <Library/PeimEntryPoint.h>
33 #include <Library/PeiServicesLib.h>
34 #include <Library/QemuFwCfgLib.h>
35 #include <Library/ResourcePublicationLib.h>
36 #include <Guid/MemoryTypeInformation.h>
37 #include <Ppi/MasterBootMode.h>
38 #include <IndustryStandard/Pci22.h>
39 #include <OvmfPlatforms.h>
44 EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation
[] = {
45 { EfiACPIMemoryNVS
, 0x004 },
46 { EfiACPIReclaimMemory
, 0x008 },
47 { EfiReservedMemoryType
, 0x004 },
48 { EfiRuntimeServicesData
, 0x024 },
49 { EfiRuntimeServicesCode
, 0x030 },
50 { EfiBootServicesCode
, 0x180 },
51 { EfiBootServicesData
, 0xF00 },
52 { EfiMaxMemoryType
, 0x000 }
56 EFI_PEI_PPI_DESCRIPTOR mPpiBootMode
[] = {
58 EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
,
59 &gEfiPeiMasterBootModePpiGuid
,
65 UINT16 mHostBridgeDevId
;
67 EFI_BOOT_MODE mBootMode
= BOOT_WITH_FULL_CONFIGURATION
;
69 BOOLEAN mS3Supported
= FALSE
;
73 AddIoMemoryBaseSizeHob (
74 EFI_PHYSICAL_ADDRESS MemoryBase
,
78 BuildResourceDescriptorHob (
79 EFI_RESOURCE_MEMORY_MAPPED_IO
,
80 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
81 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
82 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
83 EFI_RESOURCE_ATTRIBUTE_TESTED
,
90 AddReservedMemoryBaseSizeHob (
91 EFI_PHYSICAL_ADDRESS MemoryBase
,
96 BuildResourceDescriptorHob (
97 EFI_RESOURCE_MEMORY_RESERVED
,
98 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
99 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
100 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
102 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
103 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
104 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
:
107 EFI_RESOURCE_ATTRIBUTE_TESTED
,
114 AddIoMemoryRangeHob (
115 EFI_PHYSICAL_ADDRESS MemoryBase
,
116 EFI_PHYSICAL_ADDRESS MemoryLimit
119 AddIoMemoryBaseSizeHob (MemoryBase
, (UINT64
)(MemoryLimit
- MemoryBase
));
124 AddMemoryBaseSizeHob (
125 EFI_PHYSICAL_ADDRESS MemoryBase
,
129 BuildResourceDescriptorHob (
130 EFI_RESOURCE_SYSTEM_MEMORY
,
131 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
132 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
133 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
134 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
135 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
136 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
|
137 EFI_RESOURCE_ATTRIBUTE_TESTED
,
146 EFI_PHYSICAL_ADDRESS MemoryBase
,
147 EFI_PHYSICAL_ADDRESS MemoryLimit
150 AddMemoryBaseSizeHob (MemoryBase
, (UINT64
)(MemoryLimit
- MemoryBase
));
155 AddUntestedMemoryBaseSizeHob (
156 EFI_PHYSICAL_ADDRESS MemoryBase
,
160 BuildResourceDescriptorHob (
161 EFI_RESOURCE_SYSTEM_MEMORY
,
162 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
163 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
164 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
165 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
166 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
167 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
,
175 AddUntestedMemoryRangeHob (
176 EFI_PHYSICAL_ADDRESS MemoryBase
,
177 EFI_PHYSICAL_ADDRESS MemoryLimit
180 AddUntestedMemoryBaseSizeHob (MemoryBase
, (UINT64
)(MemoryLimit
- MemoryBase
));
184 MemMapInitialization (
189 // Create Memory Type Information HOB
192 &gEfiMemoryTypeInformationGuid
,
193 mDefaultMemoryTypeInformation
,
194 sizeof(mDefaultMemoryTypeInformation
)
198 // Add PCI IO Port space available for PCI resource allocations.
200 BuildResourceDescriptorHob (
202 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
203 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
,
209 // Video memory + Legacy BIOS region
211 AddIoMemoryRangeHob (0x0A0000, BASE_1MB
);
217 TopOfLowRam
= GetSystemMemorySizeBelow4gb ();
218 if (mHostBridgeDevId
== INTEL_Q35_MCH_DEVICE_ID
) {
220 // A 3GB base will always fall into Q35's 32-bit PCI host aperture,
221 // regardless of the Q35 MMCONFIG BAR. Correspondingly, QEMU never lets
222 // the RAM below 4 GB exceed it.
224 PciBase
= BASE_2GB
+ BASE_1GB
;
225 ASSERT (TopOfLowRam
<= PciBase
);
227 PciBase
= (TopOfLowRam
< BASE_2GB
) ? BASE_2GB
: TopOfLowRam
;
231 // address purpose size
232 // ------------ -------- -------------------------
233 // max(top, 2g) PCI MMIO 0xFC000000 - max(top, 2g)
234 // 0xFC000000 gap 44 MB
235 // 0xFEC00000 IO-APIC 4 KB
236 // 0xFEC01000 gap 1020 KB
237 // 0xFED00000 HPET 1 KB
238 // 0xFED00400 gap 111 KB
239 // 0xFED1C000 gap (PIIX4) / RCRB (ICH9) 16 KB
240 // 0xFED20000 gap 896 KB
241 // 0xFEE00000 LAPIC 1 MB
243 AddIoMemoryRangeHob (PciBase
, 0xFC000000);
244 AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB
);
245 AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB
);
246 if (mHostBridgeDevId
== INTEL_Q35_MCH_DEVICE_ID
) {
247 AddIoMemoryBaseSizeHob (ICH9_ROOT_COMPLEX_BASE
, SIZE_16KB
);
249 AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress
), SIZE_1MB
);
254 GetNamedFwCfgBoolean (
255 IN CHAR8
*FwCfgFileName
,
260 FIRMWARE_CONFIG_ITEM FwCfgItem
;
264 Status
= QemuFwCfgFindFile (FwCfgFileName
, &FwCfgItem
, &FwCfgSize
);
265 if (EFI_ERROR (Status
)) {
268 if (FwCfgSize
> sizeof Value
) {
269 return EFI_BAD_BUFFER_SIZE
;
271 QemuFwCfgSelectItem (FwCfgItem
);
272 QemuFwCfgReadBytes (FwCfgSize
, Value
);
274 if ((FwCfgSize
== 1) ||
275 (FwCfgSize
== 2 && Value
[1] == '\n') ||
276 (FwCfgSize
== 3 && Value
[1] == '\r' && Value
[2] == '\n')) {
294 return EFI_PROTOCOL_ERROR
;
297 #define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName) \
301 if (!EFI_ERROR (GetNamedFwCfgBoolean ( \
302 "opt/ovmf/" #TokenName, &Setting))) { \
303 PcdSetBool (TokenName, Setting); \
308 NoexecDxeInitialization (
312 UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdPropertiesTableEnable
);
313 UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdSetNxForStack
);
332 // Build the CPU HOB with guest RAM size dependent address width and 16-bits
333 // of IO space. (Side note: unlike other HOBs, the CPU HOB is needed during
334 // S3 resume as well, so we build it unconditionally.)
336 BuildCpuHob (mPhysMemAddressWidth
, 16);
339 // Determine platform type and save Host Bridge DID to PCD
341 switch (mHostBridgeDevId
) {
342 case INTEL_82441_DEVICE_ID
:
343 PmCmd
= POWER_MGMT_REGISTER_PIIX4 (PCI_COMMAND_OFFSET
);
344 Pmba
= POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMBA
);
345 AcpiCtlReg
= POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMREGMISC
);
346 AcpiEnBit
= PIIX4_PMREGMISC_PMIOSE
;
348 case INTEL_Q35_MCH_DEVICE_ID
:
349 PmCmd
= POWER_MGMT_REGISTER_Q35 (PCI_COMMAND_OFFSET
);
350 Pmba
= POWER_MGMT_REGISTER_Q35 (ICH9_PMBASE
);
351 AcpiCtlReg
= POWER_MGMT_REGISTER_Q35 (ICH9_ACPI_CNTL
);
352 AcpiEnBit
= ICH9_ACPI_CNTL_ACPI_EN
;
355 DEBUG ((EFI_D_ERROR
, "%a: Unknown Host Bridge Device ID: 0x%04x\n",
356 __FUNCTION__
, mHostBridgeDevId
));
360 PcdSet16 (PcdOvmfHostBridgePciDevId
, mHostBridgeDevId
);
363 // If the appropriate IOspace enable bit is set, assume the ACPI PMBA
364 // has been configured (e.g., by Xen) and skip the setup here.
365 // This matches the logic in AcpiTimerLibConstructor ().
367 if ((PciRead8 (AcpiCtlReg
) & AcpiEnBit
) == 0) {
369 // The PEI phase should be exited with fully accessibe ACPI PM IO space:
372 PciAndThenOr32 (Pmba
, (UINT32
) ~0xFFC0, PcdGet16 (PcdAcpiPmBaseAddress
));
375 // 2. set PCICMD/IOSE
377 PciOr8 (PmCmd
, EFI_PCI_COMMAND_IO_SPACE
);
380 // 3. set ACPI PM IO enable bit (PMREGMISC:PMIOSE or ACPI_CNTL:ACPI_EN)
382 PciOr8 (AcpiCtlReg
, AcpiEnBit
);
385 if (mHostBridgeDevId
== INTEL_Q35_MCH_DEVICE_ID
) {
387 // Set Root Complex Register Block BAR
390 POWER_MGMT_REGISTER_Q35 (ICH9_RCBA
),
391 ICH9_ROOT_COMPLEX_BASE
| ICH9_RCBA_EN
398 BootModeInitialization (
404 if (CmosRead8 (0xF) == 0xFE) {
405 mBootMode
= BOOT_ON_S3_RESUME
;
407 CmosWrite8 (0xF, 0x00);
409 Status
= PeiServicesSetBootMode (mBootMode
);
410 ASSERT_EFI_ERROR (Status
);
412 Status
= PeiServicesInstallPpi (mPpiBootMode
);
413 ASSERT_EFI_ERROR (Status
);
418 ReserveEmuVariableNvStore (
421 EFI_PHYSICAL_ADDRESS VariableStore
;
424 // Allocate storage for NV variables early on so it will be
425 // at a consistent address. Since VM memory is preserved
426 // across reboots, this allows the NV variable storage to survive
430 (EFI_PHYSICAL_ADDRESS
)(UINTN
)
431 AllocateAlignedRuntimePages (
432 EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize
)),
433 PcdGet32 (PcdFlashNvStorageFtwSpareSize
)
436 "Reserved variable store memory: 0x%lX; size: %dkb\n",
438 (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize
)) / 1024
440 PcdSet64 (PcdEmuVariableNvStoreReserved
, VariableStore
);
451 DEBUG ((EFI_D_INFO
, "CMOS:\n"));
453 for (Loop
= 0; Loop
< 0x80; Loop
++) {
454 if ((Loop
% 0x10) == 0) {
455 DEBUG ((EFI_D_INFO
, "%02x:", Loop
));
457 DEBUG ((EFI_D_INFO
, " %02x", CmosRead8 (Loop
)));
458 if ((Loop
% 0x10) == 0xf) {
459 DEBUG ((EFI_D_INFO
, "\n"));
470 #if defined (MDE_CPU_X64)
471 if (FeaturePcdGet (PcdSmmSmramRequire
) && mS3Supported
) {
473 "%a: S3Resume2Pei doesn't support X64 PEI + SMM yet.\n", __FUNCTION__
));
475 "%a: Please disable S3 on the QEMU command line (see the README),\n",
478 "%a: or build OVMF with \"OvmfPkgIa32X64.dsc\".\n", __FUNCTION__
));
487 Perform Platform PEI initialization.
489 @param FileHandle Handle of the file being invoked.
490 @param PeiServices Describes the list of possible PEI Services.
492 @return EFI_SUCCESS The PEIM initialized successfully.
498 IN EFI_PEI_FILE_HANDLE FileHandle
,
499 IN CONST EFI_PEI_SERVICES
**PeiServices
502 DEBUG ((EFI_D_ERROR
, "Platform PEIM Loaded\n"));
508 if (QemuFwCfgS3Enabled ()) {
509 DEBUG ((EFI_D_INFO
, "S3 support was detected on QEMU\n"));
514 BootModeInitialization ();
515 AddressWidthInitialization ();
519 InitializeRamRegions ();
522 DEBUG ((EFI_D_INFO
, "Xen was detected\n"));
527 // Query Host Bridge DID
529 mHostBridgeDevId
= PciRead16 (OVMF_HOSTBRIDGE_DID
);
531 if (mBootMode
!= BOOT_ON_S3_RESUME
) {
532 ReserveEmuVariableNvStore ();
533 PeiFvInitialization ();
534 MemMapInitialization ();
535 NoexecDxeInitialization ();
538 MiscInitialization ();