riscv: Add Kconfig option for SBI v0.2
authorBin Meng <bmeng.cn@gmail.com>
Thu, 16 Apr 2020 15:09:32 +0000 (08:09 -0700)
committerAndes <uboot@andestech.com>
Thu, 23 Apr 2020 02:14:06 +0000 (10:14 +0800)
commitff0fa6c1b31b6b48db7864dd01819842d6c02648
treec47c1cc35deade6d4dec2a86877cce2618c921c4
parent6fa022e8fc7fd180c05934e71d4b9351b549f5b7
riscv: Add Kconfig option for SBI v0.2

SBI v0.2 is more scalable and extendable to handle future needs
for RISC-V supervisor interfaces. For example, with SBI v0.2 HSM
extension, only a single hart need to boot and enter operating
system. The booting hart can bring up secondary harts one by one
afterwards.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
arch/riscv/Kconfig