opensbi.git/include/sbi, branch release-1.3.x

include: Bump-up version to 1.3

2023-06-23T05:31:49Z

This patch updates OpenSBI version to 1.3 as part of release preparation. Signed-off-by: Anup Patel

lib: sbi: Use scratch space to save per-HART domain pointer

2023-06-05T10:25:21Z

Instead of using a global array indexed by hartid, we should use scratch space to save per-HART domain pointer. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: sbi: Print scratch size and usage at boot time

2023-06-05T10:16:22Z

The scratch space being a scarce resource so let us print it's size and usage at boot time. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: sbi: Introduce simple heap allocator

2023-06-05T10:16:09Z

We provide simple heap allocator to manage the heap space provided by OpenSBI firmware and platform. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

platform: Allow platforms to specify heap size

2023-06-05T10:15:33Z

We extend struct sbi_platform and struct sbi_scratch to allow platforms specify the heap size to the OpenSBI firmwares. The OpenSBI firmwares will use this information to determine the location of heap and provide heap base address in per-HART scratch space. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

include: sbi_scratch: Add helper macros to access data type

2023-06-05T10:12:50Z

Reading and writing a data type in scratch space is a very common use-case so let us add related helper macros in sbi_scratch.h. Signed-off-by: Anup Patel

lib: sbi: Align system suspend errors with spec

2023-06-04T09:48:40Z

The spec says sbi_system_suspend() will return SBI_ERR_INVALID_PARAM when "sleep_type is reserved or is platform-specific and unimplemented" and SBI_ERR_NOT_SUPPORTED when sleep_type "is not reserved and is implemented, but the platform does not support it due to one or more missing dependencies." Ensure SBI_ERR_INVALID_PARAM is returned for reserved sleep types and that the system suspend driver can choose which of the two error types to return itself by returning an error from its check function rather than a boolean. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi: Document sbi_ecall_extension members

2023-05-21T11:24:02Z

With the introduction of the register_extensions callback the range members (extid_start and extid_end) may now change and it has become a bit subtle as to when a probe function should be implemented. Document all the members and their relationship to the register_extensions callback. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi: Introduce register_extensions extension callback

2023-05-21T10:57:38Z

Rather than registering all extensions on their behalf in sbi_ecall_init(), introduce another extension callback and invoke that instead. For now, implement each callback by simply registering the extension, which means this patch has no intended functional change. In later patches, extension callbacks will be modified to choose when to register and to possibly narrow the extension ID range prior to registering. When an extension range needs to remove IDs, leaving gaps, then multiple invocations of sbi_ecall_register_extension() may be used. In summary, later patches for current extensions and the introductions of future extensions will use the new callback to ensure that only valid extension IDs from the initial range, which are also available, will be registered. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi: Simplify BITS_PER_LONG definition

2023-05-11T07:26:56Z

No need to use #elif ladder when defining BITS_PER_LONG. Signed-off-by: Xiang W Reviewed-by: Andrew Jones Reviewed-by: Anup Patel