+++ /dev/null
-/** @file\r
-\r
- Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>\r
- SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
- \r\r
-\r
-\r
-Module Name:\r
-\r
- IdeBus.h\r
-\r
-Abstract:\r
-\r
- System reset Library Services. This library class provides a set of\r
- methods to reset whole system with manipulate ICH.\r
-\r
-**/\r
-\r
-\r
-#include <Base.h>\r
-\r
-\r
-#include <Library/ResetSystemLib.h>\r
-#include <Library/BaseLib.h>\r
-#include <Library/IoLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/PciLib.h>\r
-\r
-#include "PchRegs.h"\r
-#include "Rsci.h"\r
-#include "Platform.h"\r
-\r
-#define RESET_GENERATOR_PORT R_PCH_RST_CNT\r
-\r
-VOID\r
-EFIAPI\r
-PlatformResetHook (\r
- UINT8 ResetType\r
- )\r
-{\r
- //\r
- // Platform need to save OS reset request/types for next Android boot\r
- //\r
- IoWrite8 (0x72, CMOS_RESET_TYPE_BY_OS);\r
- IoWrite8 (0x73, ResetType);\r
-}\r
-\r
-/**\r
- Calling this function causes a system-wide reset. This sets\r
- all circuitry within the system to its initial state. This type of reset\r
- is asynchronous to system operation and operates without regard to\r
- cycle boundaries.\r
-\r
- System reset should not return, if it returns, it means the system does\r
- not support cold reset.\r
-**/\r
-VOID\r
-EFIAPI\r
-ResetCold (\r
- VOID\r
- )\r
-{\r
- PlatformResetHook(COLD_RESET);\r
- IoWrite8 (RESET_GENERATOR_PORT, 0x2);\r
- IoWrite8 (RESET_GENERATOR_PORT, 0x6);\r
-}\r
-\r
-/**\r
- Calling this function causes a system-wide initialization. The processors\r
- are set to their initial state, and pending cycles are not corrupted.\r
-\r
- System reset should not return, if it returns, it means the system does\r
- not support warm reset.\r
-**/\r
-VOID\r
-EFIAPI\r
-ResetWarm (\r
- VOID\r
- )\r
-{\r
- PlatformResetHook(WARM_RESET);\r
- IoWrite8 (RESET_GENERATOR_PORT, 0x0);\r
- IoWrite8 (RESET_GENERATOR_PORT, 0x4);\r
-}\r
-\r
-/**\r
- Calling this function causes the system to enter a power state equivalent\r
- to the ACPI G2/S5 or G3 states.\r
-\r
- System shutdown should not return, if it returns, it means the system does\r
- not support shut down reset.\r
-**/\r
-VOID\r
-EFIAPI\r
-ResetShutdown (\r
- VOID\r
- )\r
-{\r
- UINT16 PchPmioBase;\r
- UINT16 Data16;\r
- UINT32 Data32;\r
-\r
- PchPmioBase = (UINT16) (PciRead16 (PCI_LIB_ADDRESS(0, PCI_DEVICE_NUMBER_PCH_LPC, 0, R_PCH_LPC_ACPI_BASE)) & ~BIT0);\r
-\r
- //\r
- // Then, GPE0_EN should be disabled to avoid any GPI waking up the system from S5\r
- //\r
- Data16 = 0;\r
- IoWrite16 (\r
- (UINTN)(PchPmioBase + R_PCH_ACPI_GPE0a_EN),\r
- (UINT16)Data16\r
- );\r
-\r
- //\r
- // Clear Sleep SMI Status\r
- //\r
- IoWrite16 (PchPmioBase + R_PCH_SMI_STS,\r
- (UINT16)(IoRead16 (PchPmioBase + R_PCH_SMI_STS) | B_PCH_SMI_STS_ON_SLP_EN));\r
- //\r
- // Clear Sleep Type Enable\r
- //\r
- IoWrite16 (PchPmioBase + R_PCH_SMI_EN,\r
- (UINT16)(IoRead16 (PchPmioBase + R_PCH_SMI_EN) & (~B_PCH_SMI_EN_ON_SLP_EN)));\r
- //\r
- // Clear Power Button Status\r
- //\r
- IoWrite16(PchPmioBase + R_PCH_ACPI_PM1_STS, B_PCH_ACPI_PM1_STS_PWRBTN);\r
-\r
- //\r
- // Secondly, Power Button Status bit must be cleared\r
- //\r
- // Write a "1" to bit[8] of power button status register at\r
- // (ABASE + PM1_STS) to clear this bit\r
- // Clear it through SMI Status register\r
- //\r
- Data16 = B_PCH_SMI_STS_PM1_STS_REG;\r
- IoWrite16 ((UINTN) (PchPmioBase + R_PCH_SMI_STS), Data16);\r
-\r
- //\r
- // Finally, transform system into S5 sleep state\r
- //\r
- Data32 = IoRead32 ((UINTN) (PchPmioBase + R_PCH_ACPI_PM1_CNT));\r
-\r
- Data32 = (UINT32) ((Data32 &~(B_PCH_ACPI_PM1_CNT_SLP_TYP + B_PCH_ACPI_PM1_CNT_SLP_EN)) | V_PCH_ACPI_PM1_CNT_S5);\r
-\r
- IoWrite32 ((UINTN) (PchPmioBase + R_PCH_ACPI_PM1_CNT), Data32);\r
-\r
- Data32 = Data32 | B_PCH_ACPI_PM1_CNT_SLP_EN;\r
-\r
- IoWrite32 ((UINTN) (PchPmioBase + R_PCH_ACPI_PM1_CNT), Data32);\r
-\r
- return;\r
-}\r
-\r
-/**\r
- Calling this function causes the system to enter a power state for capsule\r
- update.\r
-\r
- Reset update should not return, if it returns, it means the system does\r
- not support capsule update.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-EnterS3WithImmediateWake (\r
- VOID\r
- )\r
-{\r
- ASSERT (FALSE);\r
-}\r
-\r
-/**\r
- This function causes a systemwide reset. The exact type of the reset is\r
- defined by the EFI_GUID that follows the Null-terminated Unicode string passed\r
- into ResetData. If the platform does not recognize the EFI_GUID in ResetData\r
- the platform must pick a supported reset type to perform.The platform may\r
- optionally log the parameters from any non-normal reset that occurs.\r
-\r
- @param[in] DataSize The size, in bytes, of ResetData.\r
- @param[in] ResetData The data buffer starts with a Null-terminated string,\r
- followed by the EFI_GUID.\r
-**/\r
-VOID\r
-EFIAPI\r
-ResetPlatformSpecific (\r
- IN UINTN DataSize,\r
- IN VOID *ResetData\r
- )\r
-{\r
- ResetCold ();\r
-}\r
-\r
-/**\r
- The ResetSystem function resets the entire platform.\r
-\r
- @param[in] ResetType The type of reset to perform.\r
- @param[in] ResetStatus The status code for the reset.\r
- @param[in] DataSize The size, in bytes, of ResetData.\r
- @param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or EfiResetShutdown\r
- the data buffer starts with a Null-terminated string, optionally\r
- followed by additional binary data. The string is a description\r
- that the caller may use to further indicate the reason for the\r
- system reset.\r
-**/\r
-VOID\r
-EFIAPI\r
-ResetSystem (\r
- IN EFI_RESET_TYPE ResetType,\r
- IN EFI_STATUS ResetStatus,\r
- IN UINTN DataSize,\r
- IN VOID *ResetData OPTIONAL\r
- )\r
-{\r
- switch (ResetType) {\r
- case EfiResetWarm:\r
- ResetWarm ();\r
- break;\r
-\r
- case EfiResetCold:\r
- ResetCold ();\r
- break;\r
-\r
- case EfiResetShutdown:\r
- ResetShutdown ();\r
- return;\r
-\r
- case EfiResetPlatformSpecific:\r
- ResetPlatformSpecific (DataSize, ResetData);\r
- return;\r
-\r
- default:\r
- return;\r
- }\r
-}\r
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