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2023-10-24riscv: Remove common.h usageTom Rini1-1/+1
We can remove common.h from most cases of the code here, and only a few places need an additional header instead. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Rick Chen <rick@andestech.com>
2023-09-05risc-v: implement DBCN write byteHeinrich Schuchardt1-0/+16
The DBCN extension provides a Console Write Byte call. Implement function sbi_dbcn_write_byte to invoke it. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
2022-04-06riscv: provide missing base extension functionsHeinrich Schuchardt1-0/+65
Provide library functions to read: * machine vendor ID * machine architecture ID * machine implementation ID Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Sean Anderson <seanga2@gmail.com>
2021-11-08riscv: function to retrieve SBI implementation versionHeinrich Schuchardt1-0/+19
Provide function sbi_get_impl_version() to retrieve the SBI implementation version. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by: Rick Chen <rick@andestech.com>
2021-10-07sysreset: provide SBI based sysreset driverHeinrich Schuchardt1-0/+12
Provide sysreset driver using the SBI system reset extension. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Samuel Holland <samuel@sholland.org>
2020-08-25cmd: provide command sbiHeinrich Schuchardt1-0/+36
Provide a command to display information about the SBI implementation. The output might look like: => sbi SBI 0.2 OpenSBI Extensions: sbi_set_timer sbi_console_putchar sbi_console_getchar sbi_clear_ipi sbi_send_ipi sbi_remote_fence_i sbi_remote_sfence_vma sbi_remote_sfence_vma_asid sbi_shutdown SBI Base Functionality Timer Extension IPI Extension RFENCE Extension Hart State Management Extension The command can be used to construct a unit test checking that the communication with the SEE is working. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Tested-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com> Tested-by: Pragnesh Patel <pragnesh.patel@openfive.com> Reviewed-by: Rick Chen <rick@andestech.com> Tested-by: Rick Chen <rick@andestech.com>
2020-06-04riscv: sbi: Move sbi_probe_extension() out of CONFIG_SBI_V01Bin Meng1-18/+19
sbi_probe_extension() is an API defined in SBI v0.2, not v0.1. Fixes 7e249bc13aaf: ("riscv: Move all SMP related SBI calls to SBI_v01") Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-06-04riscv: sbi: Remove sbi_spec_versionBin Meng1-3/+0
U-Boot defaults to use SBI v0.2. Howerver there is a global variable sbi_spec_version that stills refers to v0.1. Since it is not used anywhere, let's remove it. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-05-26riscv: Move all SMP related SBI calls to SBI_v01Atish Patra1-19/+18
SMP support for S-mode U-Boot is enabled only if SBI_V01 is enabled. There is no point in supporting SMP related (IPI and fences) SBI calls when SBI_V02 is enabled. Modify all the SMP related SBI calls to be defined only for SBI_V01. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-03-17riscv: Implement new SBI v0.2 extensionsBin Meng1-7/+9
Few v0.1 SBI calls are being replaced by new SBI calls that follows v0.2 calling convention. Implement the replacement extensions and few additional new SBI function calls that makes way for a better SBI interface in future. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-03-17riscv: Introduce a new config for SBI v0.1Bin Meng1-0/+4
We now have SBI v0.2 which is more scalable and extendable to handle future needs for RISC-V supervisor interfaces. Introduce a new config and move all SBI v0.1 code under that config. This allows to implement the new replacement SBI extensions cleanly and remove v0.1 extensions easily in future. Currently, the config is enabled by default. Once all M-mode software, with v0.1, is no longer in use, this config option and all relevant code can be easily removed. This commit is inspired from Linux kernel patch: https://patchwork.kernel.org/patch/11407361/ Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-03-17riscv: Add basic support for SBI v0.2Bin Meng1-0/+181
The SBI v0.2 introduces a base extension which is backward compatible with v0.1. Implement all helper functions and minimum required SBI calls from v0.2 for now. All other base extension function will be added later as per need. As v0.2 calling convention is backward compatible with v0.1, remove the v0.1 helper functions and just use v0.2 calling convention. Add a new Kconfig options CONFIG_SBI for the new SBI v0.2 codes, and let CONFIG_SBI_IPI depend on it. This commit is inspired from Linux kernel patch: https://patchwork.kernel.org/patch/11407363/ Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
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