[v5] Platform: Add Loongson support.

[edk2-devel] [edk2-platforms][PATCH V5 03/15] Platform/Loongson: Add PeiServicesTablePointerLib.

Posted by xianglai 1 year, 10 months ago

Use a register to save PeiServicesTable pointer,
This lib Provides PeiServicesTable pointer saving
and retrieval services.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054

Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Chao Li <lichao@loongson.cn>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
---
 .../PeiServicesTablePointer.c                 | 79 +++++++++++++++++++
 .../PeiServicesTablePointer.h                 | 39 +++++++++
 .../PeiServicesTablePointerLib.S              | 40 ++++++++++
 .../PeiServicesTablePointerLib.inf            | 32 ++++++++
 4 files changed, 190 insertions(+)
 create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
 create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
 create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
 create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf

diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
new file mode 100644
index 0000000000..204def3bde
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
@@ -0,0 +1,79 @@
+/** @file
+  PEI Services Table Pointer Library.
+
+  Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+#include <Library/PeiServicesTablePointerLib.h>
+#include <Library/DebugLib.h>
+#include "Library/Cpu.h"
+#include "PeiServicesTablePointer.h"
+
+/**
+  Caches a pointer PEI Services Table.
+
+  Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer
+  in a platform specific manner.
+
+  If PeiServicesTablePointer is NULL, then ASSERT ().
+
+  @param    PeiServicesTablePointer   The address of PeiServices pointer.
+**/
+VOID
+EFIAPI
+SetPeiServicesTablePointer (
+  IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer
+  )
+{
+  LoongarchWriteqKs0 ((UINTN)PeiServicesTablePointer);
+}
+
+/**
+  Retrieves the cached value of the PEI Services Table pointer.
+
+  Returns the cached value of the PEI Services Table pointer in a CPU specific manner
+  as specified in the CPU binding section of the Platform Initialization Pre-EFI
+  Initialization Core Interface Specification.
+
+  If the cached PEI Services Table pointer is NULL, then ASSERT ().
+
+  @return  The pointer to PeiServices.
+**/
+CONST EFI_PEI_SERVICES **
+EFIAPI
+GetPeiServicesTablePointer (
+  VOID
+  )
+{
+  UINTN  val;
+
+  LoongarchReadqKs0 (&val);
+
+  return (CONST EFI_PEI_SERVICES **)val;
+}
+
+/**
+Perform CPU specific actions required to migrate the PEI Services Table
+pointer from temporary RAM to permanent RAM.
+
+For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes
+immediately preceding the Interrupt Descriptor Table (IDT) in memory.
+For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes
+immediately preceding the Interrupt Descriptor Table (IDT) in memory.
+For Itanium and ARM CPUs, a the PEI Services Table Pointer is stored in
+a dedicated CPU register.  This means that there is no memory storage
+associated with storing the PEI Services Table pointer, so no additional
+migration actions are required for Itanium or ARM CPUs.
+*/
+VOID
+EFIAPI
+MigratePeiServicesTablePointer (
+VOID
+)
+{
+  return;
+}
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
new file mode 100644
index 0000000000..5bcbc810d0
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
@@ -0,0 +1,39 @@
+/** @file
+  PeiServicesTablePointer
+
+  Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef PEISERVICESTABLEPOINTER_H_
+#define PEISERVICESTABLEPOINTER_H_
+
+/**
+  Write Csr KS0 register.
+
+ @param A0 The value used to write to the KS0 register
+
+  @retval none
+**/
+extern
+VOID
+LoongarchWriteqKs0 (
+  IN UINT64  Val
+  );
+
+/**
+  Read Csr KS0 register.
+
+ @param  Val Pointer to the variable used to store the KS0 register value
+
+  @retval none
+**/
+extern
+VOID
+LoongarchReadqKs0 (
+  IN UINT64  *Val
+  );
+
+#endif // PEISERVICESTABLEPOINTER_H_
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
new file mode 100644
index 0000000000..7c6170c5d6
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
@@ -0,0 +1,40 @@
+#------------------------------------------------------------------------------
+#
+# Timer Cfg for LoongArch
+#
+# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#ifndef __ASSEMBLY__
+#define __ASSEMBLY__
+#endif
+
+#include "Library/Cpu.h"
+
+ASM_GLOBAL ASM_PFX(LoongarchWriteqKs0)
+ASM_GLOBAL ASM_PFX(LoongarchReadqKs0)
+
+#
+# Write Csr KS0 register.
+# @param A0 The value used to write to the KS0 register
+# @retval  none
+#
+
+ASM_PFX(LoongarchWriteqKs0):
+    csrwr   A0, LOONGARCH_CSR_KS0
+    jirl    ZERO, RA,0
+
+#
+# Write Csr KS0 register.
+# @param A0 Pointer to the variable used to store the KS0 register value
+# @retval  none
+#
+
+ASM_PFX(LoongarchReadqKs0):
+    csrrd T0, LOONGARCH_CSR_KS0
+    stptr.d T0, A0, 0
+    jirl    ZERO, RA,0
+    jirl    ZERO, RA,0
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
new file mode 100644
index 0000000000..2ab0d53d4c
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
@@ -0,0 +1,32 @@
+## @file
+#  PEI Services Table Pointer Library.
+#
+#  Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PeiServicesTablePointerLib
+  FILE_GUID                      = C3C9C4ED-EB8A-4548-BE1B-ABB0B6F35B1E
+  MODULE_TYPE                    = PEIM
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PeiServicesTablePointerLib|PEIM PEI_CORE SEC
+
+#
+#  VALID_ARCHITECTURES           = LOONGARCH64
+#
+
+[Sources]
+  PeiServicesTablePointer.c
+  PeiServicesTablePointerLib.S
+
+[Packages]
+  Platform/Loongson/LoongArchQemuPkg/Loongson.dec
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  DebugLib
+
+[Pcd]
-- 
2.31.1




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Re: [edk2-devel] [edk2-platforms][PATCH V5 03/15] Platform/Loongson: Add PeiServicesTablePointerLib.

Posted by Chao Li 1 year, 10 months ago

Reviewed-by: Chao Li <lichao@loongson.cn>

Thanks,
Chao
--------

On 11月 11 2022, at 5:12 下午, xianglai li <lixianglai@loongson.cn> wrote:
> Use a register to save PeiServicesTable pointer,
>
> This lib Provides PeiServicesTable pointer saving
> and retrieval services.
>
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054
>
>
> Cc: Bibo Mao <maobibo@loongson.cn>
> Cc: Chao Li <lichao@loongson.cn>
> Cc: Leif Lindholm <quic_llindhol@quicinc.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Signed-off-by: xianglai li <lixianglai@loongson.cn>
> ---
> .../PeiServicesTablePointer.c | 79 +++++++++++++++++++
> .../PeiServicesTablePointer.h | 39 +++++++++
> .../PeiServicesTablePointerLib.S | 40 ++++++++++
> .../PeiServicesTablePointerLib.inf | 32 ++++++++
> 4 files changed, 190 insertions(+)
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
>
>
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
> new file mode 100644
> index 0000000000..204def3bde
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
> @@ -0,0 +1,79 @@
> +/** @file
> + PEI Services Table Pointer Library.
> +
> + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <PiPei.h>
> +#include <Library/PeiServicesTablePointerLib.h>
> +#include <Library/DebugLib.h>
> +#include "Library/Cpu.h"
> +#include "PeiServicesTablePointer.h"
> +
> +/**
> + Caches a pointer PEI Services Table.
> +
> + Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer
> + in a platform specific manner.
> +
> + If PeiServicesTablePointer is NULL, then ASSERT ().
> +
> + @param PeiServicesTablePointer The address of PeiServices pointer.
> +**/
> +VOID
> +EFIAPI
> +SetPeiServicesTablePointer (
> + IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer
> + )
> +{
> + LoongarchWriteqKs0 ((UINTN)PeiServicesTablePointer);
> +}
> +
> +/**
> + Retrieves the cached value of the PEI Services Table pointer.
> +
> + Returns the cached value of the PEI Services Table pointer in a CPU specific manner
> + as specified in the CPU binding section of the Platform Initialization Pre-EFI
> + Initialization Core Interface Specification.
> +
> + If the cached PEI Services Table pointer is NULL, then ASSERT ().
> +
> + @return The pointer to PeiServices.
> +**/
> +CONST EFI_PEI_SERVICES **
> +EFIAPI
> +GetPeiServicesTablePointer (
> + VOID
> + )
> +{
> + UINTN val;
> +
> + LoongarchReadqKs0 (&val);
> +
> + return (CONST EFI_PEI_SERVICES **)val;
> +}
> +
> +/**
> +Perform CPU specific actions required to migrate the PEI Services Table
> +pointer from temporary RAM to permanent RAM.
> +
> +For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes
> +immediately preceding the Interrupt Descriptor Table (IDT) in memory.
> +For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes
> +immediately preceding the Interrupt Descriptor Table (IDT) in memory.
> +For Itanium and ARM CPUs, a the PEI Services Table Pointer is stored in
> +a dedicated CPU register. This means that there is no memory storage
> +associated with storing the PEI Services Table pointer, so no additional
> +migration actions are required for Itanium or ARM CPUs.
> +*/
> +VOID
> +EFIAPI
> +MigratePeiServicesTablePointer (
> +VOID
> +)
> +{
> + return;
> +}
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
> new file mode 100644
> index 0000000000..5bcbc810d0
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.h
> @@ -0,0 +1,39 @@
> +/** @file
> + PeiServicesTablePointer
> +
> + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef PEISERVICESTABLEPOINTER_H_
> +#define PEISERVICESTABLEPOINTER_H_
> +
> +/**
> + Write Csr KS0 register.
> +
> + @param A0 The value used to write to the KS0 register
> +
> + @retval none
> +**/
> +extern
> +VOID
> +LoongarchWriteqKs0 (
> + IN UINT64 Val
> + );
> +
> +/**
> + Read Csr KS0 register.
> +
> + @param Val Pointer to the variable used to store the KS0 register value
> +
> + @retval none
> +**/
> +extern
> +VOID
> +LoongarchReadqKs0 (
> + IN UINT64 *Val
> + );
> +
> +#endif // PEISERVICESTABLEPOINTER_H_
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
> new file mode 100644
> index 0000000000..7c6170c5d6
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.S
> @@ -0,0 +1,40 @@
> +#------------------------------------------------------------------------------
> +#
> +# Timer Cfg for LoongArch
> +#
> +# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#------------------------------------------------------------------------------
> +
> +#ifndef __ASSEMBLY__
> +#define __ASSEMBLY__
> +#endif
> +
> +#include "Library/Cpu.h"
> +
> +ASM_GLOBAL ASM_PFX(LoongarchWriteqKs0)
> +ASM_GLOBAL ASM_PFX(LoongarchReadqKs0)
> +
> +#
> +# Write Csr KS0 register.
> +# @param A0 The value used to write to the KS0 register
> +# @retval none
> +#
> +
> +ASM_PFX(LoongarchWriteqKs0):
> + csrwr A0, LOONGARCH_CSR_KS0
> + jirl ZERO, RA,0
> +
> +#
> +# Write Csr KS0 register.
> +# @param A0 Pointer to the variable used to store the KS0 register value
> +# @retval none
> +#
> +
> +ASM_PFX(LoongarchReadqKs0):
> + csrrd T0, LOONGARCH_CSR_KS0
> + stptr.d T0, A0, 0
> + jirl ZERO, RA,0
> + jirl ZERO, RA,0
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
> new file mode 100644
> index 0000000000..2ab0d53d4c
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
> @@ -0,0 +1,32 @@
> +## @file
> +# PEI Services Table Pointer Library.
> +#
> +# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +[Defines]
> + INF_VERSION = 0x00010005
> + BASE_NAME = PeiServicesTablePointerLib
> + FILE_GUID = C3C9C4ED-EB8A-4548-BE1B-ABB0B6F35B1E
> + MODULE_TYPE = PEIM
> + VERSION_STRING = 1.0
> + LIBRARY_CLASS = PeiServicesTablePointerLib|PEIM PEI_CORE SEC
> +
> +#
> +# VALID_ARCHITECTURES = LOONGARCH64
> +#
> +
> +[Sources]
> + PeiServicesTablePointer.c
> + PeiServicesTablePointerLib.S
> +
> +[Packages]
> + Platform/Loongson/LoongArchQemuPkg/Loongson.dec
> + MdePkg/MdePkg.dec
> +
> +[LibraryClasses]
> + DebugLib
> +
> +[Pcd]
> --
> 2.31.1


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