opensbi.git/lib/sbi/sbi_ecall.c, branch master

lib: sbi: Remove unnecessary SBI_INIT_LIST_HEAD

2025-04-15T06:08:20Z

No need to initialise the nodes to be added to the linked list Signed-off-by: Xiang W Reviewed-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250319123944.505756-1-wxjstz@126.com Signed-off-by: Anup Patel

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22T05:46:13Z

Add boot-time prints for list of available standard and experimental SBI extensions. Signed-off-by: Anup Patel

treewide: Make carray arrays const and NULL-terminated

2024-11-28T11:39:17Z

This allows the compiler to generate significantly better code, because it does not have to maintain either the loop counter or loop limit. Plus there are half as many symbols to relocate. This also simplifies passing carray arrays to helper functions. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Pass trap context pointer to sbi_ecall_handler()

2024-03-19T06:01:39Z

To be consistent with other trap handlers, pass trap context pointer to sbi_ecall_handler(). Signed-off-by: Anup Patel Reviewed-by: Samuel Holland Tested-by: Samuel Holland Reviewed-by: Clément Léger

lib: sbi: Allow ecall handlers to directly update register state

2023-12-19T10:26:37Z

Some of the upcoming SBI extensions (such as SSE) will directly update register state so improve the prototype of ecall handler to accommodate this. Further, this flexibility allows us to push the trap redirection from sbi_ecall_handler() to the sbi_ecall_legacy_handler(). Signed-off-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: Don't check SBI error range for legacy console getchar

2023-04-17T04:18:13Z

The legacy console getchar SBI call returns character value in the sbiret.error field so the "SBI_SUCCESS < ret" check in sbi_ecall_handler() results in unwanted error prints for the legacy console getchar SBI call. Let's suppress these unwanted error prints. Fixes: 67b2a408924b ("lib: sbi: sbi_ecall: Check the range of SBI error") Signed-off-by: Anup Patel

lib: sbi: sbi_ecall: Check the range of SBI error

2023-02-27T06:16:08Z

We should also check if the return error code is greater than 0 (SBI_SUCCESS), as this is an invalid error. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Xiang W Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

treewide: Replace TRUE/FALSE with true/false

2023-01-06T11:56:35Z

C language standard uses true/false for the boolean type. Let's switch to that for better language compatibility. Signed-off-by: Bin Meng Reviewed-by: Anup Patel Reviewed-by: Samuel Holland Tested-by: Samuel Holland

lib: sbi_ecall: Generate extensions list with carray

2022-10-23T05:30:30Z

Instead of hard-coding the list of extensions in C code, use carray to generate the list of extensions. Using carray makes adding and removing extensions slightly cleaner. This also paves the way for using Kconfig to disable unneeded extensions. Signed-off-by: Vivian Wang Reviewed-by: Andrew Jones Reviewed-by: Anup Patel