Re: [U-Boot] [PATCH 3/7] riscv: implement IPI platform functions using SBI

On Tue, Feb 12, 2019 at 6:14 AM Lukas Auer lukas.auer@aisec.fraunhofer.de wrote:

The supervisor binary interface (SBI) provides the necessary functions to implement the platform IPI functions riscv_send_ipi() and riscv_clear_ipi(). Use it to implement them.

This adds support for inter-processor interrupts (IPIs) on RISC-V CPUs running in supervisor mode. Support for machine mode is already available for CPUs that include the SiFive CLINT.

Signed-off-by: Lukas Auer lukas.auer@aisec.fraunhofer.de

arch/riscv/Kconfig | 5 +++++ arch/riscv/lib/Makefile | 1 + arch/riscv/lib/sbi_ipi.c | 25 +++++++++++++++++++++++++ 3 files changed, 31 insertions(+) create mode 100644 arch/riscv/lib/sbi_ipi.c

Reviewed-by: Bin Meng bmeng.cn@gmail.com