[mirror_edk2.git] / CorebootPayloadPkg / Library / ResetSystemLib / ResetSystemLib.c

/** @file\r
  Reset System Library functions for coreboot\r
\r
  Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiDxe.h>\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/HobLib.h>\r
\r
#include <Guid/AcpiBoardInfoGuid.h>\r
\r
VOID\r
AcpiPmControl (\r
  UINTN SuspendType\r
  )\r
{\r
	EFI_HOB_GUID_TYPE  *GuidHob;\r
	ACPI_BOARD_INFO    *pAcpiBoardInfo;	\r
	UINTN PmCtrlReg = 0;\r
	\r
  ASSERT (SuspendType <= 7);  \r
  //\r
	// Find the acpi board information guid hob\r
	//\r
	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	ASSERT (GuidHob != NULL);\r
  pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
  \r
  PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; \r
  IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));\r
  IoOr16 (PmCtrlReg, BIT13);\r
  CpuDeadLoop ();\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
  EFI_HOB_GUID_TYPE  *GuidHob;\r
	ACPI_BOARD_INFO    *pAcpiBoardInfo;	\r
		\r
	//\r
	// Find the acpi board information guid hob\r
	//\r
	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	ASSERT (GuidHob != NULL);\r
  pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
	\r
  IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r
  CpuDeadLoop ();\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
	EFI_HOB_GUID_TYPE  *GuidHob;\r
	ACPI_BOARD_INFO    *pAcpiBoardInfo;	\r
		\r
	//\r
	// Find the acpi board information guid hob\r
	//\r
	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	ASSERT (GuidHob != NULL);\r
  pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
	\r
  IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r
  CpuDeadLoop ();\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
  EFI_HOB_GUID_TYPE  *GuidHob;\r
  ACPI_BOARD_INFO    *pAcpiBoardInfo;\r
  UINTN              PmCtrlReg;\r
\r
  //\r
  // Find the acpi board information guid hob\r
  //\r
  GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
  ASSERT (GuidHob != NULL);\r
  pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
  \r
  //\r
  // GPE0_EN should be disabled to avoid any GPI waking up the system from S5\r
  //\r
  IoWrite16 ((UINTN)pAcpiBoardInfo->PmGpeEnBase,  0);\r
\r
  //\r
  // Clear Power Button Status\r
  //\r
  IoWrite16((UINTN) pAcpiBoardInfo->PmEvtBase, BIT8);\r
  \r
  //\r
  // Transform system into S5 sleep state\r
  //\r
  PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; \r
  IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10));\r
  IoOr16 (PmCtrlReg, BIT13);\r
  CpuDeadLoop ();\r
\r
  ASSERT (FALSE);\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
  AcpiPmControl (5);\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
Commit	Line	Data
9c228fb0 MM	1	/** @file\r
	2	Reset System Library functions for coreboot\r
	3	\r
adb6c39a	4	Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r
d2e8b7e1	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
9c228fb0 MM	6	\r
	7	**/\r
	8	\r
	9	#include <PiDxe.h>\r
	10	#include <Library/BaseLib.h>\r
	11	#include <Library/DebugLib.h>\r
	12	#include <Library/IoLib.h>\r
	13	#include <Library/HobLib.h>\r
	14	\r
	15	#include <Guid/AcpiBoardInfoGuid.h>\r
	16	\r
	17	VOID\r
	18	AcpiPmControl (\r
	19	UINTN SuspendType\r
	20	)\r
	21	{\r
	22	EFI_HOB_GUID_TYPE *GuidHob;\r
	23	ACPI_BOARD_INFO *pAcpiBoardInfo; \r
	24	UINTN PmCtrlReg = 0;\r
	25	\r
	26	ASSERT (SuspendType <= 7); \r
	27	//\r
	28	// Find the acpi board information guid hob\r
	29	//\r
	30	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	31	ASSERT (GuidHob != NULL);\r
	32	pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
	33	\r
	34	PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; \r
	35	IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));\r
	36	IoOr16 (PmCtrlReg, BIT13);\r
	37	CpuDeadLoop ();\r
	38	}\r
	39	\r
	40	/**\r
	41	Calling this function causes a system-wide reset. This sets\r
	42	all circuitry within the system to its initial state. This type of reset\r
	43	is asynchronous to system operation and operates without regard to\r
	44	cycle boundaries.\r
	45	\r
	46	System reset should not return, if it returns, it means the system does\r
	47	not support cold reset.\r
	48	**/\r
	49	VOID\r
	50	EFIAPI\r
	51	ResetCold (\r
	52	VOID\r
	53	)\r
	54	{\r
	55	EFI_HOB_GUID_TYPE *GuidHob;\r
	56	ACPI_BOARD_INFO *pAcpiBoardInfo; \r
	57	\r
	58	//\r
	59	// Find the acpi board information guid hob\r
	60	//\r
	61	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	62	ASSERT (GuidHob != NULL);\r
	63	pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
	64	\r
	65	IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r
	66	CpuDeadLoop ();\r
	67	}\r
	68	\r
	69	/**\r
70	Calling this function causes a system-wide initialization. The processors\r
71	are set to their initial state, and pending cycles are not corrupted.\r
72	\r
73	System reset should not return, if it returns, it means the system does\r
74	not support warm reset.\r
75	**/\r
76	VOID\r
77	EFIAPI\r
78	ResetWarm (\r
79	VOID\r
80	)\r
81	{\r
82	EFI_HOB_GUID_TYPE *GuidHob;\r
83	ACPI_BOARD_INFO *pAcpiBoardInfo; \r
84	\r
85	//\r
86	// Find the acpi board information guid hob\r
87	//\r
88	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
89	ASSERT (GuidHob != NULL);\r
90	pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
91	\r
92	IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r
93	CpuDeadLoop ();\r
94	}\r
95	\r
96	/**\r
97	Calling this function causes the system to enter a power state equivalent\r
98	to the ACPI G2/S5 or G3 states.\r
99	\r
100	System shutdown should not return, if it returns, it means the system does\r
101	not support shut down reset.\r
102	**/\r
103	VOID\r
104	EFIAPI\r
105	ResetShutdown (\r
106	VOID\r
107	)\r
108	{\r
24467749 GD	109	EFI_HOB_GUID_TYPE *GuidHob;\r
	110	ACPI_BOARD_INFO *pAcpiBoardInfo;\r
	111	UINTN PmCtrlReg;\r
	112	\r
	113	//\r
	114	// Find the acpi board information guid hob\r
	115	//\r
	116	GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r
	117	ASSERT (GuidHob != NULL);\r
	118	pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r
	119	\r
	120	//\r
	121	// GPE0_EN should be disabled to avoid any GPI waking up the system from S5\r
	122	//\r
	123	IoWrite16 ((UINTN)pAcpiBoardInfo->PmGpeEnBase, 0);\r
	124	\r
	125	//\r
	126	// Clear Power Button Status\r
	127	//\r
	128	IoWrite16((UINTN) pAcpiBoardInfo->PmEvtBase, BIT8);\r
	129	\r
	130	//\r
	131	// Transform system into S5 sleep state\r
	132	//\r
	133	PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; \r
	134	IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10));\r
	135	IoOr16 (PmCtrlReg, BIT13);\r
	136	CpuDeadLoop ();\r
	137	\r
9c228fb0 MM	138	ASSERT (FALSE);\r
	139	}\r
	140	\r
9c228fb0 MM	141	/**\r
	142	Calling this function causes the system to enter a power state for capsule\r
	143	update.\r
	144	\r
	145	Reset update should not return, if it returns, it means the system does\r
	146	not support capsule update.\r
	147	\r
	148	**/\r
	149	VOID\r
	150	EFIAPI\r
	151	EnterS3WithImmediateWake (\r
	152	VOID\r
	153	)\r
	154	{\r
	155	AcpiPmControl (5);\r
	156	ASSERT (FALSE);\r
	157	}\r
adb6c39a RN	158	\r
	159	/**\r
	160	This function causes a systemwide reset. The exact type of the reset is\r
	161	defined by the EFI_GUID that follows the Null-terminated Unicode string passed\r
	162	into ResetData. If the platform does not recognize the EFI_GUID in ResetData\r
	163	the platform must pick a supported reset type to perform.The platform may\r
	164	optionally log the parameters from any non-normal reset that occurs.\r
	165	\r
	166	@param[in] DataSize The size, in bytes, of ResetData.\r
	167	@param[in] ResetData The data buffer starts with a Null-terminated string,\r
	168	followed by the EFI_GUID.\r
	169	**/\r
	170	VOID\r
	171	EFIAPI\r
	172	ResetPlatformSpecific (\r
	173	IN UINTN DataSize,\r
	174	IN VOID *ResetData\r
	175	)\r
	176	{\r
	177	ResetCold ();\r
	178	}\r