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path: root/include/sbi/sbi_ecall_interface.h
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2025-02-19include: sbi: Add SBI_ERR_DENIED_LOCKEDClément Léger1-1/+2
Add SBI_ERR_DENIED_LOCKED and set it as the SBI_LAST_ERR which was wrongly set to SBI_ERR_BAD_RANGE. Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2025-02-13lib: sbi: Update MPXY framework and SBI extension as per latest specAnup Patel1-7/+8
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 <apatel@ventanamicro.com>
2024-12-15lib: sbi: fix GLOBAL_PLAT_DEFINEClément Léger1-2/+2
Fix GLOBAL_PLAT_0_START/END definitions. The specification states that the beginning of the range is 0xc000 and the end is 0xffff. Reported-by: Andrew Jones <andrew.jones@linux.dev> Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-12-06lib: sbi: Implement SBI MPXY extensionAnup Patel1-0/+10
Implement the SBI MPXY extension which provides an SBI interface to the supervisor software for send messages via MPXY framework. Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com> Co-developed-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
2024-12-06lib: sbi: Add SBI Message Proxy (MPXY) frameworkRahul Pathak1-0/+2
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 <rpathak@ventanamicro.com> Co-developed-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Co-developed-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
2024-12-02lib: sbi_pmu: Add SBI PMU event info function details.Atish Patra1-0/+9
The SBI v3.0 introduced a new function to query about the events without invoking CFG_MATCH. This allows supervisor software to identify which events are supported on the platform with single SBI call instead of a CFG_MATCH for each event. Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-12-02lib: sbi_pmu: PMU raw event v2 supportAtish Patra1-0/+2
As per the updated ISA specification and SBI PMU v3.0, lower 56 bits are available for the platform to implement mhpmeventX encoding. Implement the PMU raw event V2 support defined in SBI v3.0 which allows more bits for platforms to encode the raw events. Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-10-25lib: sbi: send a double trap SSE event to supervisorClément Léger1-0/+1
In case the double trap handler is called and the double trap happened in supervisor mode, send a double trap SSE event. NOTE: this commit depends on the ratification of the new SSE event id for double trap [1]. Link: https://lists.riscv.org/g/tech-prs/message/985 [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
2024-10-25lib: sbi: Add support to mask/unmask SSE eventsHimanshu Chauhan1-0/+2
Add functions to globally mask/unmask supervisor software events on the calling hart. Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-09-23lib: sbi: fwft: add support for SBI_FWFT_POINTER_MASKING_PMLENSamuel Holland1-1/+2
Add support for controlling the pointer masking mode on harts which support the Smnpm extension. This extension can only exist on harts where XLEN >= 64 bits. This implementation selects the mode with the smallest PMLEN that satisfies the caller's requested lower bound. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-19lib: sbi: add support for firmware features extensionClément Léger1-0/+27
This extension allows the software running in supervisor mode to control the behavior of various features of the SBI [1]. Implement the support for such extension. Link: https://lists.riscv.org/g/tech-prs/message/924 [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-05-07lib: sbi: sse: fix typos, comments and spacing errorsClément Léger1-12/+12
Fix some errors spotted by Samuel while reviewing the SSE implementation. Signed-off-by: Clément Léger <cleger@rivosinc.com> Reported-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-04-05lib: sbi: Add support for Supervisor Software Events extensionClément Léger1-1/+78
This extension [1] allows to deliver events from SBI to supervisor via a software mechanism. This extension defines events (either local or global) which are signaled by the SBI on specific signal sources (IRQ, exceptions, etc) and are injected to be executed in supervisor mode. [1] https://lists.riscv.org/g/tech-prs/message/798 Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-01-10include: sbi: Add SBI debug trigger extension related definesHimanshu Chauhan1-0/+11
This patch adds defines for SBI debug trigger extension and function IDs to access the extension. Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-12-08lib: sbi_pmu: Add PMU snapshot definitionsAtish Patra1-1/+5
OpenSBI doesn't support SBI PMU snapshot yet as there is not much benefit unless the multiple counters overflow at the same time. Just add the definition and return not supported error at this moment. The default returned error is also not supported. Thus, no functional change intended. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Atish Patra <atishp@rivosinc.com>
2023-04-07lib: sbi_pmu: Align the event type offset as per SBI specificationYu Chien Peter Lin1-2/+2
The bits encoded in event_idx[19:16] indicate the event type, with an offset of 16 instead of 20. Fixes: 13d40f21d588 ("lib: sbi: Add PMU support") Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Xiang W <wxjstz@126.com>
2023-04-07include: Add defines for SBI CPPC extensionSunil V L1-0/+34
Add SBI CPPC extension related defines to the SBI ecall interface header. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-03-10lib: sbi_pmu: Reserve space for implementation specific firmware eventsMayuresh Chitale1-0/+11
We reserve space for SBI implementation specific custom firmware events which can be used by M-mode firmwares and HS-mode hypervisors for their own use. This reserved space is intentionally large to ensure that SBI implementation has enough space to accommodate platform specific firmware events as well. Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-03-10lib: sbi_pmu: Implement sbi_pmu_counter_fw_read_hiMayuresh Chitale1-0/+1
To support 64 bit firmware counters on RV32 systems, we implement sbi_pmu_counter_fw_read_hi() which returns the upper 32 bits of the firmware counter value. On RV64 (or higher) systems, this function will always return zero. Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-02-27lib: sbi: Add system suspend skeletonAndrew Jones1-0/+8
Add the SUSP extension probe and ecall support, but for now the system suspend function is just a stub. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-02-09include: Add defines for SBI debug console extensionAnup Patel1-0/+6
We add SBI debug console extension related defines to the SBI ecall interface header. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Bin Meng <bmeng@tinylab.org> Reviewed-by: Xiang W <wxjstz@126.com>
2022-07-30lib: sbi: Add the bound check for events during config matchAtish Patra1-0/+6
Currently, there is no sanity check for firmware event code. We don't see any issue as Linux kernel driver does a bound check on firmware events already. However, OpenSBI can't assume sane supervisor mode software always. Thus, an invalid event idx can cause a buffer overflow error. For hardware events, the match will fail for invalid event code anyways. However, a search is unecessary if event code is invalid. Add a event ID validation function to solve the issue. Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2021-07-11lib: sbi: Add PMU supportAtish Patra1-1/+137
RISC-V SBI v0.3 specification defined a PMU extension to configure/start/stop the hardware/firmware pmu events. Implement PMU support in OpenSBI library. The implementation is agnostic of event to counter mapping & mhpmevent value configuration. That means, it expects platform hooks will be used to set up the mapping and provide the mhpmevent value at runtime. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-03-12include: sbi: SBI function IDs for RFENCE extensionHeinrich Schuchardt1-4/+4
The SBI function IDs for RFENCE extension must match the SBI specification. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-03-03include: sbi: Add HSM suspend related definesAnup Patel1-0/+17
This patch adds SBI HSM suspend related defines to ecall interface header. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-03-03include: sbi: Simplify HSM state define namesAnup Patel1-4/+4
We simplify HSM state define names so that these defines can directly replace SBI_HART_xyz defines used by SBI HSM implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-12-01include: sbi: Add SBI SRST extension related definesAnup Patel1-0/+12
We extend the SBI ecall interface header for the SBI SRST extension recently accepted in SBI specification v0.3-draft. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-06-20lib: Don't return any invalid error from SBI ecallAnup Patel1-1/+13
We should only return valid error codes from SBI ecalls as defined by the RISC-V SBI spec. To achieve this: 1. We use SBI_Exxxx defines for OpenSBI internal errors with error values starting from -1000 2. We use SBI_ERR_xxxx defines for errors defined by SBI spec 3. We map some of the SBI_Exxxx defines to SBI_ERR_xxxx defines which are semantically same 4. We throw a error print and force return error code to SBI_ERR_FAILED in sbi_ecall_handler() if we see an invalid error code being returned to S-mode Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-19include: sbi: Add firmware extension constantsDaniel Schaefer1-0/+2
Cc: Abner Chang <abner.chang@hpe.com> Signed-off-by: Daniel Schaefer <git@danielschaefer.me> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-03-10lib: sbi: Fix coding style issuesBin Meng1-11/+11
This fixes various coding style issues found in the SBI codes. No functional changes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-02-24lib: Implement Hart State Management (HSM) SBI extensionAtish Patra1-0/+6
This patch adds support HSM extension. The specification is available at https://github.com/riscv/riscv-sbi-doc. It allows to implement hart hotplug and fixed ordered hart booting in supervisor. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-02-24lib: Add possible hart status valuesAtish Patra1-0/+5
SBI HSM extension defines possible hart status values in the specification. Define all possible status values. Add a helper function to convert hart state to status because hart states are internal to OpenSBI only and may not match the status values defined in the specification. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-12-23lib: Add replacement extension and function idsAtish Patra1-22/+38
Take this opportunity to move the enums to macros as enums make sbi_ecall_interface.h unusable in assembly files. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-10-03lib: Provide a platform hook to implement vendor specific SBI extensions.Atish Patra1-0/+2
SBI v0.2 specification allows vendor extensions and it should be implemented in a independent of the core sbi library. Introduce a single platform callback that will let platforms handle all vendor extensions in platform specific code if they want. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-10-03lib: Implement SBI v0.2Atish Patra1-0/+14
SBI v0.2 introduces a base specification which is mandatory to implement for any SBI implementations that is not legacy. Add support for the base extension. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-10-03lib: Rename existing SBI implementation as 0.1.Atish Patra1-9/+11
Current SBI implementation is now considered as version 0.1 and will be removed/replaced with newer extension/functions in future. Rename the existing implementations accordingly to be in sync with the specification. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Zong Li <zong.li@sifive.com>
2019-10-03Test: Move test payload related code out of interface headerAtish Patra1-25/+0
Test payload uses an SBI call and uses the macros defined in interface header which is not the correct place to have these definitions. The interface header file should be used to keep SBI specification related macros. Keep all the test payload related code in test itself. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-04-24all: run clang-format and update checked-in filesOlof Johansson1-18/+18
Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson <olof@lixom.net>
2019-04-24all: Annotate some tables to have clang-format leave them aloneOlof Johansson1-0/+4
One of the shortcomings of clang-format is that it doesn't allow for aligned define tables, which is used for a number of constants. Add annotation to disable the automatic formatting where needed. Signed-off-by: Olof Johansson <olof@lixom.net>
2019-01-24all: Update copyright header in all filesAnup patel1-3/+3
This patch updates copyright header in all files as follows: 1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line 2. Change copyright year to 2019 for Western Digital Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-21sbi: Add ecall helpersDamien Le Moal1-1/+10
Define sbi_ecall_console_puts() using sbi_ecall_console_putchar() renamed as sbi_ecall_console_putc() and remove the hardcoded version of the same funtion in the test payload code. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-27lib: Move ECALL defines to sbi_ecall_interface.hAnup Patel1-0/+39
This patch moves all ECALL defines to sbi_ecall_interface.h so that it can be shared with firmware payloads. Signed-off-by: Anup Patel <anup.patel@wdc.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-21 20:08:10 +0300