+++ /dev/null
-/** @file\r
-\r
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
-\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include "LegacyBiosInterface.h"\r
-#include <IndustryStandard/Pci.h>\r
-\r
-// Give floppy 3 states\r
-// FLOPPY_PRESENT_WITH_MEDIA = Floppy controller present and media is inserted\r
-// FLOPPY_NOT_PRESENT = No floppy controller present\r
-// FLOPPY_PRESENT_NO_MEDIA = Floppy controller present but no media inserted\r
-//\r
-#define FLOPPY_NOT_PRESENT 0\r
-#define FLOPPY_PRESENT_WITH_MEDIA 1\r
-#define FLOPPY_PRESENT_NO_MEDIA 2\r
-\r
-BBS_TABLE *mBbsTable;\r
-BOOLEAN mBbsTableDoneFlag = FALSE;\r
-BOOLEAN IsHaveMediaInFloppy = TRUE;\r
-\r
-/**\r
- Checks the state of the floppy and if media is inserted.\r
-\r
- This routine checks the state of the floppy and if media is inserted.\r
- There are 3 cases:\r
- No floppy present - Set BBS entry to ignore\r
- Floppy present & no media - Set BBS entry to lowest priority. We cannot\r
- set it to ignore since 16-bit CSM will\r
- indicate no floppy and thus drive A: is\r
- unusable. CSM-16 will not try floppy since\r
- lowest priority and thus not incur boot\r
- time penality.\r
- Floppy present & media - Set BBS entry to some priority.\r
-\r
- @return State of floppy media\r
-\r
-**/\r
-UINT8\r
-HasMediaInFloppy (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN HandleCount;\r
- EFI_HANDLE *HandleBuffer;\r
- UINTN Index;\r
- EFI_ISA_IO_PROTOCOL *IsaIo;\r
- EFI_BLOCK_IO_PROTOCOL *BlkIo;\r
-\r
- HandleBuffer = NULL;\r
- HandleCount = 0;\r
-\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiIsaIoProtocolGuid,\r
- NULL,\r
- &HandleCount,\r
- &HandleBuffer\r
- );\r
-\r
- //\r
- // If don't find any ISA/IO protocol assume no floppy. Need for floppy\r
- // free system\r
- //\r
- if (HandleCount == 0) {\r
- return FLOPPY_NOT_PRESENT;\r
- }\r
-\r
- ASSERT (HandleBuffer != NULL);\r
-\r
- for (Index = 0; Index < HandleCount; Index++) {\r
- Status = gBS->HandleProtocol (\r
- HandleBuffer[Index],\r
- &gEfiIsaIoProtocolGuid,\r
- (VOID **) &IsaIo\r
- );\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- if (IsaIo->ResourceList->Device.HID != EISA_PNP_ID (0x604)) {\r
- continue;\r
- }\r
- //\r
- // Update blockio in case the floppy is inserted in during BdsTimeout\r
- //\r
- Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);\r
-\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- Status = gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r
-\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- Status = gBS->HandleProtocol (\r
- HandleBuffer[Index],\r
- &gEfiBlockIoProtocolGuid,\r
- (VOID **) &BlkIo\r
- );\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- if (BlkIo->Media->MediaPresent) {\r
- FreePool (HandleBuffer);\r
- return FLOPPY_PRESENT_WITH_MEDIA;\r
- } else {\r
- FreePool (HandleBuffer);\r
- return FLOPPY_PRESENT_NO_MEDIA;\r
- }\r
- }\r
-\r
- FreePool (HandleBuffer);\r
-\r
- return FLOPPY_NOT_PRESENT;\r
-\r
-}\r
-\r
-\r
-/**\r
- Complete build of BBS TABLE.\r
-\r
- @param Private Legacy BIOS Instance data\r
- @param BbsTable BBS Table passed to 16-bit code\r
-\r
- @retval EFI_SUCCESS Removable media not present\r
-\r
-**/\r
-EFI_STATUS\r
-LegacyBiosBuildBbs (\r
- IN LEGACY_BIOS_INSTANCE *Private,\r
- IN BBS_TABLE *BbsTable\r
- )\r
-{\r
- UINTN BbsIndex;\r
- HDD_INFO *HddInfo;\r
- UINTN HddIndex;\r
- UINTN Index;\r
-\r
- //\r
- // First entry is floppy.\r
- // Next 2*MAX_IDE_CONTROLLER entries are for onboard IDE.\r
- // Next n entries are filled in after each ROM is dispatched.\r
- // Entry filled in if follow BBS spec. See LegacyPci.c\r
- // Next entries are for non-BBS compliant ROMS. They are filled in by\r
- // 16-bit code during Legacy16UpdateBbs invocation. Final BootPriority\r
- // occurs after that invocation.\r
- //\r
- // Floppy\r
- // Set default state.\r
- //\r
- IsHaveMediaInFloppy = HasMediaInFloppy ();\r
- if (IsHaveMediaInFloppy == FLOPPY_PRESENT_WITH_MEDIA) {\r
- BbsTable[0].BootPriority = BBS_UNPRIORITIZED_ENTRY;\r
- } else {\r
- if (IsHaveMediaInFloppy == FLOPPY_PRESENT_NO_MEDIA) {\r
- BbsTable[0].BootPriority = BBS_LOWEST_PRIORITY;\r
- } else {\r
- BbsTable[0].BootPriority = BBS_IGNORE_ENTRY;\r
- }\r
- }\r
-\r
- BbsTable[0].Bus = 0xff;\r
- BbsTable[0].Device = 0xff;\r
- BbsTable[0].Function = 0xff;\r
- BbsTable[0].DeviceType = BBS_FLOPPY;\r
- BbsTable[0].Class = 01;\r
- BbsTable[0].SubClass = 02;\r
- BbsTable[0].StatusFlags.OldPosition = 0;\r
- BbsTable[0].StatusFlags.Reserved1 = 0;\r
- BbsTable[0].StatusFlags.Enabled = 0;\r
- BbsTable[0].StatusFlags.Failed = 0;\r
- BbsTable[0].StatusFlags.MediaPresent = 0;\r
- BbsTable[0].StatusFlags.Reserved2 = 0;\r
-\r
- //\r
- // Onboard HDD - Note Each HDD controller controls 2 drives\r
- // Master & Slave\r
- //\r
- HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];\r
- //\r
- // Get IDE Drive Info\r
- //\r
- LegacyBiosBuildIdeData (Private, &HddInfo, 0);\r
-\r
- for (HddIndex = 0; HddIndex < MAX_IDE_CONTROLLER; HddIndex++) {\r
-\r
- BbsIndex = HddIndex * 2 + 1;\r
- for (Index = 0; Index < 2; ++Index) {\r
-\r
- BbsTable[BbsIndex + Index].Bus = HddInfo[HddIndex].Bus;\r
- BbsTable[BbsIndex + Index].Device = HddInfo[HddIndex].Device;\r
- BbsTable[BbsIndex + Index].Function = HddInfo[HddIndex].Function;\r
- BbsTable[BbsIndex + Index].Class = 01;\r
- BbsTable[BbsIndex + Index].SubClass = 01;\r
- BbsTable[BbsIndex + Index].StatusFlags.OldPosition = 0;\r
- BbsTable[BbsIndex + Index].StatusFlags.Reserved1 = 0;\r
- BbsTable[BbsIndex + Index].StatusFlags.Enabled = 0;\r
- BbsTable[BbsIndex + Index].StatusFlags.Failed = 0;\r
- BbsTable[BbsIndex + Index].StatusFlags.MediaPresent = 0;\r
- BbsTable[BbsIndex + Index].StatusFlags.Reserved2 = 0;\r
-\r
- //\r
- // If no controller found or no device found set to ignore\r
- // else set to unprioritized and set device type\r
- //\r
- if (HddInfo[HddIndex].CommandBaseAddress == 0) {\r
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;\r
- } else {\r
- if (Index == 0) {\r
- if ((HddInfo[HddIndex].Status & (HDD_MASTER_IDE | HDD_MASTER_ATAPI_CDROM | HDD_MASTER_ATAPI_ZIPDISK)) != 0) {\r
- BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;\r
- if ((HddInfo[HddIndex].Status & HDD_MASTER_IDE) != 0) {\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;\r
- } else if ((HddInfo[HddIndex].Status & HDD_MASTER_ATAPI_CDROM) != 0) {\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;\r
- } else {\r
- //\r
- // for ZIPDISK\r
- //\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;\r
- }\r
- } else {\r
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;\r
- }\r
- } else {\r
- if ((HddInfo[HddIndex].Status & (HDD_SLAVE_IDE | HDD_SLAVE_ATAPI_CDROM | HDD_SLAVE_ATAPI_ZIPDISK)) != 0) {\r
- BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;\r
- if ((HddInfo[HddIndex].Status & HDD_SLAVE_IDE) != 0) {\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;\r
- } else if ((HddInfo[HddIndex].Status & HDD_SLAVE_ATAPI_CDROM) != 0) {\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;\r
- } else {\r
- //\r
- // for ZIPDISK\r
- //\r
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;\r
- }\r
- } else {\r
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;\r
- }\r
- }\r
- }\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-\r
-}\r
-\r
-\r
-/**\r
- Get all BBS info\r
-\r
- @param This Protocol instance pointer.\r
- @param HddCount Number of HDD_INFO structures\r
- @param HddInfo Onboard IDE controller information\r
- @param BbsCount Number of BBS_TABLE structures\r
- @param BbsTable List BBS entries\r
-\r
- @retval EFI_SUCCESS Tables returned\r
- @retval EFI_NOT_FOUND resource not found\r
- @retval EFI_DEVICE_ERROR can not get BBS table\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-LegacyBiosGetBbsInfo (\r
- IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
- OUT UINT16 *HddCount,\r
- OUT HDD_INFO **HddInfo,\r
- OUT UINT16 *BbsCount,\r
- OUT BBS_TABLE **BbsTable\r
- )\r
-{\r
- LEGACY_BIOS_INSTANCE *Private;\r
- EFI_IA32_REGISTER_SET Regs;\r
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;\r
-// HDD_INFO *LocalHddInfo;\r
-// IN BBS_TABLE *LocalBbsTable;\r
- UINTN NumHandles;\r
- EFI_HANDLE *HandleBuffer;\r
- UINTN Index;\r
- UINTN TempData;\r
- UINT32 Granularity;\r
-\r
- HandleBuffer = NULL;\r
-\r
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;\r
-// LocalHddInfo = EfiToLegacy16BootTable->HddInfo;\r
-// LocalBbsTable = (BBS_TABLE*)(UINTN)EfiToLegacy16BootTable->BbsTable;\r
-\r
- if (!mBbsTableDoneFlag) {\r
- mBbsTable = Private->BbsTablePtr;\r
-\r
- //\r
- // Always enable disk controllers so 16-bit CSM code has valid information for all\r
- // drives.\r
- //\r
- //\r
- // Get PciRootBridgeIO protocol\r
- //\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiPciRootBridgeIoProtocolGuid,\r
- NULL,\r
- &NumHandles,\r
- &HandleBuffer\r
- );\r
-\r
- if (NumHandles == 0) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- mBbsTableDoneFlag = TRUE;\r
- for (Index = 0; Index < NumHandles; Index++) {\r
- //\r
- // Connect PciRootBridgeIO protocol handle with FALSE parameter to let\r
- // PCI bus driver enumerate all subsequent handles\r
- //\r
- gBS->ConnectController (HandleBuffer[Index], NULL, NULL, FALSE);\r
-\r
- }\r
-\r
- LegacyBiosBuildBbs (Private, mBbsTable);\r
-\r
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xe0000, 0x20000, &Granularity);\r
-\r
- //\r
- // Call into Legacy16 code to add to BBS table for non BBS compliant OPROMs.\r
- //\r
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
- Regs.X.AX = Legacy16UpdateBbs;\r
-\r
- //\r
- // Pass in handoff data\r
- //\r
- TempData = (UINTN) EfiToLegacy16BootTable;\r
- Regs.X.ES = NORMALIZE_EFI_SEGMENT ((UINT32) TempData);\r
- Regs.X.BX = NORMALIZE_EFI_OFFSET ((UINT32) TempData);\r
-\r
- Private->LegacyBios.FarCall86 (\r
- This,\r
- Private->Legacy16CallSegment,\r
- Private->Legacy16CallOffset,\r
- &Regs,\r
- NULL,\r
- 0\r
- );\r
-\r
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);\r
- Private->LegacyRegion->Lock (Private->LegacyRegion, 0xe0000, 0x20000, &Granularity);\r
-\r
- if (Regs.X.AX != 0) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
- }\r
-\r
- if (HandleBuffer != NULL) {\r
- FreePool (HandleBuffer);\r
- }\r
-\r
- *HddCount = MAX_IDE_CONTROLLER;\r
- *HddInfo = EfiToLegacy16BootTable->HddInfo;\r
- *BbsTable = (BBS_TABLE*)(UINTN)EfiToLegacy16BootTable->BbsTable;\r
- *BbsCount = (UINT16) (sizeof (Private->IntThunk->BbsTable) / sizeof (BBS_TABLE));\r
- return EFI_SUCCESS;\r
-}\r
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