core: riscv: add SiFive Unleashed and Unmatched board support

Add SiFive Unleashed and Unmatched board support.

Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Reviewed-by: Samuel Holland

core: riscv: add SiFive Unleashed and Unmatched board support

Add SiFive Unleashed and Unmatched board support.

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>
Acked-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

show more ...