core: riscv: sbi.h: expose sbi_ecall helper in public header

Move `sbi_ecall()` and `struct sbiret` to sbi.h to allow reuse across
individual SBI extension implementations. This prepares for modular

core: riscv: sbi.h: expose sbi_ecall helper in public header

Move `sbi_ecall()` and `struct sbiret` to sbi.h to allow reuse across
individual SBI extension implementations. This prepares for modularizing
each SBI extension (e.g., HSM, MPXY) into its own file while
centralizing the ecall interface.

Removes the now-duplicated inline definition from sbi.c.

Signed-off-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Reviewed-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Yu-Chien Peter Lin <peter.lin@sifive.com>

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riscv: kernel: sbi: introduce sbi_hsm_hart_get_status() function

Introduce sbi_hsm_hart_get_status() function and add comment for
sbi_hsm_hart_start().

Signed-off-by: Yu-Chien Peter Lin <peter.lin@

riscv: kernel: sbi: introduce sbi_hsm_hart_get_status() function

Introduce sbi_hsm_hart_get_status() function and add comment for
sbi_hsm_hart_start().

Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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riscv: sbi_console: prefer SBI v2.0 DBCN ecall over legacy sbi_console_putchar()

As the legacy sbi_console_putchar() may be deprecated in the future,
it is recommended to use sbi_dbcn_write_byte() p

riscv: sbi_console: prefer SBI v2.0 DBCN ecall over legacy sbi_console_putchar()

As the legacy sbi_console_putchar() may be deprecated in the future,
it is recommended to use sbi_dbcn_write_byte() provided by SBI v2.0
DBCN extension [1]. However, if the DBCN extension is not supported,
sbi_console_putchar() can still be used as the last resort.

Link: https://github.com/riscv-non-isa/riscv-sbi-doc/blob/v2.0/src/ext-debug-console.adoc#function-console-write-byte-fid-2 [1]
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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riscv: sbi_console: split FID 0 from SBI_EXT_0_1_CONSOLE_PUTCHAR

Split FID 0 from SBI_EXT_0_1_CONSOLE_PUTCHAR definition for better
readability. Also, provide a function description.

Signed-off-by:

riscv: sbi_console: split FID 0 from SBI_EXT_0_1_CONSOLE_PUTCHAR

Split FID 0 from SBI_EXT_0_1_CONSOLE_PUTCHAR definition for better
readability. Also, provide a function description.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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riscv: sbi: minor cleanup for SBI HSM related definitions

Rename sbi_boot_hart() to sbi_hsm_hart_start() and use enumerated
type for function ID definition for better clarity and consistency
with th

riscv: sbi: minor cleanup for SBI HSM related definitions

Rename sbi_boot_hart() to sbi_hsm_hart_start() and use enumerated
type for function ID definition for better clarity and consistency
with the following commits.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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riscv: kernel: sbi: add RISC-V SBI interface

Allow OP-TEE core running in S-Mode (supervisor) to interface with
Supervisor Execution Environment (SEE) through environmental calls (ecall).
Adds CFG_R

riscv: kernel: sbi: add RISC-V SBI interface

Allow OP-TEE core running in S-Mode (supervisor) to interface with
Supervisor Execution Environment (SEE) through environmental calls (ecall).
Adds CFG_RISCV_SBI flag to enable or disable it.

Signed-off-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
[jf: set author to be same as Signed-off-by:]
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

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