* [edk2-platforms PATCH v1 1/1] RISC-V/RiscVExceptionLib: Follow new CpuExceptionHandlerLib APIs
@ 2022-08-11 6:40 Daniel Schaefer
2022-08-16 13:50 ` Sunil V L
0 siblings, 1 reply; 2+ messages in thread
From: Daniel Schaefer @ 2022-08-11 6:40 UTC (permalink / raw)
To: devel; +Cc: Sunil V L
CpuExceptionHandlerLib (in EDK2) has been refactored with following changes
1. Removed InitializeCpuInterruptHandlers in 2a09527ebcb459b40
2. Removed InitializeCpuExceptionHandlersEx and
added InitializeSeparateExceptionStacks in e7abb94d1fb8a0e7
The patch updates RISC-V version of CpuExceptionHandlerLib to follow
the API changes, based on the ARM changes in e2ae0bed29ca0900bd35.
The functionality to RISC-V platforms should be none.
Signed-off-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
---
Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c | 82 ++++++--------------
1 file changed, 24 insertions(+), 58 deletions(-)
diff --git a/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c b/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
index 93fbde619f..c3ced4a4c2 100644
--- a/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
+++ b/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
@@ -44,31 +44,6 @@ InitializeCpuExceptionHandlers (
return EFI_SUCCESS;
}
-/**
- Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
-
- Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
- persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
- If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
- If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
-
- @param[in] VectorInfo Pointer to reserved vector list.
-
- @retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
- with default interrupt/exception handlers.
- @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
- @retval EFI_UNSUPPORTED This function is not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeCpuInterruptHandlers (
- IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
- )
-{
- return EFI_SUCCESS;
-}
-
/**
Registers a function to be called from the processor interrupt handler.
@@ -134,39 +109,6 @@ RiscVSupervisorModeTrapHandler (
}
}
-/**
- Initializes all CPU exceptions entries with optional extra initializations.
-
- By default, this method should include all functionalities implemented by
- InitializeCpuExceptionHandlers(), plus extra initialization works, if any.
- This could be done by calling InitializeCpuExceptionHandlers() directly
- in this method besides the extra works.
-
- InitData is optional and its use and content are processor arch dependent.
- The typical usage of it is to convey resources which have to be reserved
- elsewhere and are necessary for the extra initializations of exception.
-
- @param[in] VectorInfo Pointer to reserved vector list.
- @param[in] InitData Pointer to data optional for extra initializations
- of exception.
-
- @retval EFI_SUCCESS The exceptions have been successfully
- initialized.
- @retval EFI_INVALID_PARAMETER VectorInfo or InitData contains invalid
- content.
- @retval EFI_UNSUPPORTED This function is not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeCpuExceptionHandlersEx (
- IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL,
- IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL
- )
-{
- return InitializeCpuExceptionHandlers (VectorInfo);
-}
-
/**
The constructor function to initial interrupt handlers in
RISCV_MACHINE_MODE_CONTEXT.
@@ -192,3 +134,27 @@ CpuExceptionHandlerLibConstructor (
return EFI_SUCCESS;
}
+
+/**
+ Setup separate stacks for certain exception handlers.
+ If the input Buffer and BufferSize are both NULL, use global variable if possible.
+
+ @param[in] Buffer Point to buffer used to separate exception stack.
+ @param[in, out] BufferSize On input, it indicates the byte size of Buffer.
+ If the size is not enough, the return status will
+ be EFI_BUFFER_TOO_SMALL, and output BufferSize
+ will be the size it needs.
+
+ @retval EFI_SUCCESS The stacks are assigned successfully.
+ @retval EFI_UNSUPPORTED This function is not supported.
+ @retval EFI_BUFFER_TOO_SMALL This BufferSize is too small.
+**/
+EFI_STATUS
+EFIAPI
+InitializeSeparateExceptionStacks (
+ IN VOID *Buffer,
+ IN OUT UINTN *BufferSize
+ )
+{
+ return EFI_SUCCESS;
+}
--
2.36.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [edk2-platforms PATCH v1 1/1] RISC-V/RiscVExceptionLib: Follow new CpuExceptionHandlerLib APIs
2022-08-11 6:40 [edk2-platforms PATCH v1 1/1] RISC-V/RiscVExceptionLib: Follow new CpuExceptionHandlerLib APIs Daniel Schaefer
@ 2022-08-16 13:50 ` Sunil V L
0 siblings, 0 replies; 2+ messages in thread
From: Sunil V L @ 2022-08-16 13:50 UTC (permalink / raw)
To: Daniel Schaefer; +Cc: devel
On Thu, Aug 11, 2022 at 02:40:57PM +0800, Daniel Schaefer wrote:
> CpuExceptionHandlerLib (in EDK2) has been refactored with following changes
> 1. Removed InitializeCpuInterruptHandlers in 2a09527ebcb459b40
> 2. Removed InitializeCpuExceptionHandlersEx and
> added InitializeSeparateExceptionStacks in e7abb94d1fb8a0e7
>
> The patch updates RISC-V version of CpuExceptionHandlerLib to follow
> the API changes, based on the ARM changes in e2ae0bed29ca0900bd35.
>
> The functionality to RISC-V platforms should be none.
>
> Signed-off-by: Daniel Schaefer <daniel.schaefer@hpe.com>
> Cc: Sunil V L <sunilvl@ventanamicro.com>
> ---
> Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c | 82 ++++++--------------
> 1 file changed, 24 insertions(+), 58 deletions(-)
>
> diff --git a/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c b/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
> index 93fbde619f..c3ced4a4c2 100644
> --- a/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
> +++ b/Silicon/RISC-V/ProcessorPkg/Library/RiscVExceptionLib/CpuExceptionHandlerLib.c
> @@ -44,31 +44,6 @@ InitializeCpuExceptionHandlers (
> return EFI_SUCCESS;
> }
>
> -/**
> - Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
> -
> - Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
> - persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
> - If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
> - If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
> -
> - @param[in] VectorInfo Pointer to reserved vector list.
> -
> - @retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
> - with default interrupt/exception handlers.
> - @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
> - @retval EFI_UNSUPPORTED This function is not supported.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -InitializeCpuInterruptHandlers (
> - IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
> - )
> -{
> - return EFI_SUCCESS;
> -}
> -
> /**
> Registers a function to be called from the processor interrupt handler.
>
> @@ -134,39 +109,6 @@ RiscVSupervisorModeTrapHandler (
> }
> }
>
> -/**
> - Initializes all CPU exceptions entries with optional extra initializations.
> -
> - By default, this method should include all functionalities implemented by
> - InitializeCpuExceptionHandlers(), plus extra initialization works, if any.
> - This could be done by calling InitializeCpuExceptionHandlers() directly
> - in this method besides the extra works.
> -
> - InitData is optional and its use and content are processor arch dependent.
> - The typical usage of it is to convey resources which have to be reserved
> - elsewhere and are necessary for the extra initializations of exception.
> -
> - @param[in] VectorInfo Pointer to reserved vector list.
> - @param[in] InitData Pointer to data optional for extra initializations
> - of exception.
> -
> - @retval EFI_SUCCESS The exceptions have been successfully
> - initialized.
> - @retval EFI_INVALID_PARAMETER VectorInfo or InitData contains invalid
> - content.
> - @retval EFI_UNSUPPORTED This function is not supported.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -InitializeCpuExceptionHandlersEx (
> - IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL,
> - IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL
> - )
> -{
> - return InitializeCpuExceptionHandlers (VectorInfo);
> -}
> -
> /**
> The constructor function to initial interrupt handlers in
> RISCV_MACHINE_MODE_CONTEXT.
> @@ -192,3 +134,27 @@ CpuExceptionHandlerLibConstructor (
>
> return EFI_SUCCESS;
> }
> +
> +/**
> + Setup separate stacks for certain exception handlers.
> + If the input Buffer and BufferSize are both NULL, use global variable if possible.
> +
> + @param[in] Buffer Point to buffer used to separate exception stack.
> + @param[in, out] BufferSize On input, it indicates the byte size of Buffer.
> + If the size is not enough, the return status will
> + be EFI_BUFFER_TOO_SMALL, and output BufferSize
> + will be the size it needs.
> +
> + @retval EFI_SUCCESS The stacks are assigned successfully.
> + @retval EFI_UNSUPPORTED This function is not supported.
> + @retval EFI_BUFFER_TOO_SMALL This BufferSize is too small.
> +**/
> +EFI_STATUS
> +EFIAPI
> +InitializeSeparateExceptionStacks (
> + IN VOID *Buffer,
> + IN OUT UINTN *BufferSize
> + )
> +{
> + return EFI_SUCCESS;
> +}
Looks good to me.
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> --
> 2.36.0
>
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