opensbi.git/include/sbi/sbi_platform.h, branch v1.6

lib: sbi: Add SBI Message Proxy (MPXY) framework

2024-12-06T03:56:50Z

Introduce SBI Message Proxy (MPXY) framework which allows platform specific code or drivers to register message protocol specific channels. This framework enables the supervisor software to send messages belonging to different message protocols via OpenSBI firmware. Signed-off-by: Rahul Pathak Co-developed-by: Himanshu Chauhan Signed-off-by: Himanshu Chauhan Co-developed-by: Anup Patel Signed-off-by: Anup Patel

platform: Drop irqchip warm init and exit hooks

2024-11-28T06:16:36Z

Now that driver lifecycle is managed from within the SBI irqchip core, platforms need only to initialize the driver once during cold init. Remove the remaining platform hooks that are no longer used. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

platform: Drop IPI warm init and exit hooks

2024-11-11T12:51:04Z

Now that the SBI IPI core clears IPIs at warm boot in a generic way, none of the drivers or platforms use these hooks, and we can remove them. Platforms need only to initialize the driver once during cold init. If other hooks are needed in the future, they can be added to struct sbi_ipi_device. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

platform: ensure enough heap size with debug triggers extension

2024-11-11T12:10:22Z

DBTR introduce a big heap allocation to store hart state, this is allocated percpu and needs big space when CPU number is high. Increase the percpu part to fix this problem, and decrease the fixed part to avoid too big heap size. Fixes: 97f234f (lib: sbi: Introduce the SBI debug triggers extension support) Signed-off-by: Inochi Amaoto Reviewed-by: Xiang W Reviewed-by: Anup Patel

platform: Drop timer warm init and exit hooks

2024-11-05T12:09:31Z

Now that driver lifecycle is managed from within the SBI timer core, platforms need only to initialize the driver once during cold init. Remove the remaining platform hooks that are no longer used. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Remove sbi_console_init() and console_init() platform callback

2024-07-24T06:48:33Z

Now that all platforms have been updated to initialize serial console device in early_init(), the sbi_console_init() and console_init() platform callback are redundant hence remove them. Signed-off-by: Anup Patel Reviewed-By: Himanshu Chauhan

lib: sbi: call platform load/store emulators

2024-03-11T05:26:02Z

sbi_load/store_access_handler now tries to call platform emulators if defined. Otherwise, redirects the fault. If the platform code returns failure, this means the H/S/U has accessed the emulated devices in an unexpected manner, which is very likely caused by buggy code in H/S/U. We redirect the fault, so lower privileged level can get notified, and act accordingly. (E.g., oops in Linux) We let the handler truly fail if the trap was originated from M mode. In this case, something must be very wrong and we should just fail. Signed-off-by: Bo Gan Reviewed-by: Anup Patel

include: sbi: add emulate_load/store handler to platform ops

2024-03-11T05:24:14Z

This patch allows the platform to define load/store emulators. This enables a platform to trap-and-emulate special devices or filter access to existing physical devices. Signed-off-by: Bo Gan Reviewed-by: Anup Patel

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

platform: Uses hart count as the default size of tlb info

2023-11-16T04:23:45Z

For platform with high number of harts, it is better to auto detect a suitable number of entries in tlb fifo. Since allocating tlb entry for all online harts can reduce the wait time significantly, using the number of the online harts can make most platforms happy. This auto detection can avoid most duplicate code for setting tlb fifo size. Signed-off-by: Inochi Amaoto Acked-by: Guo Ren Reviewed-by: Xiang W Reviewed-by: Anup Patel