opensbi.git/include/sbi_utils, branch v1.7

lib: utils: Add Implementation ID and Version as RPMI MPXY attributes

2025-06-24T03:12:27Z

The latest frozen RPMI spec has added Implementation ID and Implementation Version as message protocol specific mpxy attributes. Add support for these. Signed-off-by: Rahul Pathak Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250618053854.2577299-1-rpathak@ventanamicro.com Signed-off-by: Anup Patel

lib: utils: Fix fdt_mpxy_init() not returning error code

2025-05-20T05:50:57Z

It seems that current implementation doesn't fail on fdt_mpxy_init(), because platforms might not have any MPXY devices. In fact, if there are no MPXY devices, fdt_driver_init_all() will return SBI_OK. More importantly, if there is any MPXY device which fails the initialization, OpenSBI must check the error code and stop the booting. Thus, this commit adds the return value for fdt_mpxy_init(). Signed-off-by: Alvin Chang Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250430091007.3768180-1-alvinga@andestech.com Signed-off-by: Anup Patel

lib: utils/mpxy: Remove p2a_db_index from RPMI system MSI attributes

2025-05-20T05:40:35Z

The discovery of P2A doorbell system MSI index is now through RPMI shared memory DT node so remove p2a_db_index from RPMI system MSI attributes and access it as a mailbox channel attribute. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250512083827.804151-5-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: utils/mailbox: Parse P2A doorbell system MSI index from DT

2025-05-20T05:40:35Z

The P2A doorbell system MSI index is expected to be discovered from device tree instead of RPMI system MSI service group attribute. This is based on ARC feedback before RPMI spec was frozen. Let's parse P2A doorbell system MSI index from device tree and also expose it as rpmi channel attribute to RPMI client drivers. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250512083827.804151-3-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: sbi: Set the scratch allocation to alignment to cacheline size

2025-04-24T03:53:47Z

Set the scratch allocation alignment to cacheline size specified by riscv,cbom-block-size in the DTS file to avoid two atomic variables from the same cache line causing livelock on some platforms. If the cacheline is not specified, we set it a default value. Signed-off-by: Raj Vishwanathan Reviewed-by: Anup Patel Reviewed-by: Samuel Holland Link: https://lore.kernel.org/r/20250423225045.267983-1-Raj.Vishwanathan@gmail.com Signed-off-by: Anup Patel

lib: utils/fdt: Remove fdt_match_node()

2025-04-23T07:02:51Z

This function has been obsoleted by the fdt_driver library and is no longer used. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-10-samuel.holland@sifive.com Signed-off-by: Anup Patel

lib: utils/serial: Add PXA UARTs support

2025-03-27T14:50:05Z

The PXA variant of the uart8250 adds the UART Unit Enable bit (UUE) that needs to be set to enable the XScale PXA UART. And it is required for some RISC-V SoCs like the Spacemit K1 that implement the PXA UART. This introduces the "intel,xscale-uart" compatible to handle setting the UUE bit. Signed-off-by: Junhui Liu Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250327-pxa-uart-support-v2-1-c4400c1fcd0b@pigmoral.tech Signed-off-by: Anup Patel

lib: utils/fdt: Allocate fdt_pmu_evt_select on the heap

2025-02-19T12:55:17Z

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: Add MPXY RPMI mailbox driver for System MSI service group

2025-02-13T05:40:03Z

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

2025-02-13T05:40:03Z

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