opensbi.git/include/sbi/sbi_ecall_interface.h, branch v0.8

lib: Don't return any invalid error from SBI ecall

2020-06-20T05:06:13Z

We should only return valid error codes from SBI ecalls as defined by the RISC-V SBI spec. To achieve this: 1. We use SBI_Exxxx defines for OpenSBI internal errors with error values starting from -1000 2. We use SBI_ERR_xxxx defines for errors defined by SBI spec 3. We map some of the SBI_Exxxx defines to SBI_ERR_xxxx defines which are semantically same 4. We throw a error print and force return error code to SBI_ERR_FAILED in sbi_ecall_handler() if we see an invalid error code being returned to S-mode Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi: Add firmware extension constants

2020-05-19T03:52:44Z

Cc: Abner Chang Signed-off-by: Daniel Schaefer Reviewed-by: Anup Patel

lib: sbi: Fix coding style issues

2020-03-10T04:57:28Z

This fixes various coding style issues found in the SBI codes. No functional changes. Signed-off-by: Bin Meng Reviewed-by: Anup Patel

lib: Implement Hart State Management (HSM) SBI extension

2020-02-24T12:43:23Z

This patch adds support HSM extension. The specification is available at https://github.com/riscv/riscv-sbi-doc. It allows to implement hart hotplug and fixed ordered hart booting in supervisor. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Add possible hart status values

2020-02-24T12:41:47Z

SBI HSM extension defines possible hart status values in the specification. Define all possible status values. Add a helper function to convert hart state to status because hart states are internal to OpenSBI only and may not match the status values defined in the specification. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Add replacement extension and function ids

2019-12-23T03:42:04Z

Take this opportunity to move the enums to macros as enums make sbi_ecall_interface.h unusable in assembly files. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Provide a platform hook to implement vendor specific SBI extensions.

2019-10-03T03:28:51Z

SBI v0.2 specification allows vendor extensions and it should be implemented in a independent of the core sbi library. Introduce a single platform callback that will let platforms handle all vendor extensions in platform specific code if they want. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Implement SBI v0.2

2019-10-03T03:26:55Z

SBI v0.2 introduces a base specification which is mandatory to implement for any SBI implementations that is not legacy. Add support for the base extension. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Rename existing SBI implementation as 0.1.

2019-10-03T03:23:52Z

Current SBI implementation is now considered as version 0.1 and will be removed/replaced with newer extension/functions in future. Rename the existing implementations accordingly to be in sync with the specification. Signed-off-by: Atish Patra Reviewed-by: Anup Patel Reviewed-by: Zong Li

Test: Move test payload related code out of interface header

2019-10-03T03:21:39Z

Test payload uses an SBI call and uses the macros defined in interface header which is not the correct place to have these definitions. The interface header file should be used to keep SBI specification related macros. Keep all the test payload related code in test itself. Signed-off-by: Atish Patra Reviewed-by: Anup Patel