starfive-tech/opensbi.git/lib, branch master

lib: sbi: fwft: Return SBI_ERR_DENIED_LOCKED when setting a locked feature

2025-02-19T16:43:21+00:00

Latest modifications to the spec mandates that a set on a lock feature returns SBI_ERR_DENIED_LOCKED. Signed-off-by: Clément Léger Reviewed-by: Anup Patel

lib: utils/irqchip: Match against more specific compatible strings first

2025-02-19T16:19:08+00:00

The T-HEAD C90x PLIC has some special quirks, such as the S-mode delegation bit. OpenSBI currently handles this by checking the compatible string in the device tree. However, this matching is done in the order of the fdt_match array. So if a device tree contains both strings, for example: compatible = "thead,c900-plic", "riscv,plic0"; Then OpenSBI will match against the generic "riscv,plic0" string, since that appears first in the fdt_match array. This means it will fail to set the S-mode delegation bit, and Linux will fail to boot. In some cases, it is not possible to change the compatible string to just the T-HEAD PLIC, as older versions of Linux only recognize the RISC-V compatible string. This patch fixes that by moving the RISC-V string to the end, ensuring that the more specific options get matched first. Signed-off-by: Alex Studer Reviewed-by: Anup Patel

lib: utils/fdt: Allocate fdt_pmu_evt_select on the heap

2025-02-19T12:55:17+00:00

This reduces .bss size by 8 KiB, and should reduce overall memory usage since most platforms will have significantly fewer than 512 entries in this table. At the same time, it removes the fixed table size limit. Since the table is only used within fdt_pmu.c, instead of updating the extern declaration, make the table local to this file. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/fdt: Remove redundant PMU property length checks

2025-02-19T12:52:52+00:00

If a property value is too small, len will be zero after the division on the next line, so the property will be ignored. This is the same behavior as when the length check fails. Furthermore, the first two length checks were already ineffectual, because each item in those arrays is 12 bytes long, not 8. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils: Constify FDT driver definitions

2025-02-19T12:17:24+00:00

The carray referencing these definitions assumes they are const. Fixes: 6a26726e08e4 ("lib/utils: reset: Add RPMI System Reset driver") Fixes: 13f55f33a1d3 ("lib: utils/suspend: Add RPMI system suspend driver") Fixes: 33ee9b8240fe ("lib: utils/hsm: Add RPMI HSM driver") Fixes: 591a98bdd549 ("lib: utils/cppc: Add RPMI CPPC driver") Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: sse: fix invalid errors returned for sse_hart_mask/unmask()

2025-02-19T11:48:13+00:00

When called twice, sse_hart_mask()/sse_hart_unmask() should return SBI_EALREADY_STOPPED/SBI_EALREADY_STARTED. This was currently inverted. Fixes: b919daf49582 ("lib: sbi: Add support to mask/unmask SSE events") Reported-by: Andrew Jones Signed-off-by: Clément Léger Reviewed-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Fix non-root domain startup

2025-02-19T11:41:39+00:00

Currently, the sbi_sse_init() in cold boot path is called after sbi_domain_finalize() so boot HART of non-root domains will start before SSE cold boot init which can cause warm boot of such HARTs to crash in sbi_sse_init(). To address the above issue, factor-out the non-root domain startup from sbi_domain_finalize() function as a separate sbi_domain_startup() function which can be called after sbi_sse_init() in cold boot path. Fixes: 93f7d819fdeb ("lib: sbi: sse: allow adding new events") Signed-off-by: Anup Patel

lib: sbi: Update MPXY framework and SBI extension as per latest spec

2025-02-13T05:40:03+00:00

The latest SBI 3.0 spec defines a new sbi_mpxy_get_shmem_size() function and simplifies sbi_mpxy_set_shmem() function so update the MPXY framework and SBI extension accordingly. Signed-off-by: Anup Patel

lib: utils: Add MPXY RPMI mailbox driver for System MSI service group

2025-02-13T05:40:03+00:00

The supervisor software can directly receive most of the system MSIs except P2A doorbell and MSIs preferred to be handled in M-mode. Add MPXY RPMI mailbox client driver for the System MSI service group. Signed-off-by: Anup Patel

include: sbi_utils: Update RPMI service group IDs and BASE service group

2025-02-13T05:40:03+00:00

The service group ID assignment and some of the BASE services have changes in the latest RPMI specification so let's update the RPMI implementation accordingly. Signed-off-by: Anup Patel Reviewed-by: Samuel Holland