[U-Boot] [PATCH 19/19] riscv: Allow U-Boot to run on hart 0 only

Allow U-Boot to run on hart 0 only, and suspend other harts.

With this change, '-smp n' works on QEMU RISC-V board.

Signed-off-by: Bin Meng bmeng.cn@gmail.com

---

arch/riscv/cpu/start.S | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 9858058..fcb0466 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -46,6 +46,10 @@ _start: /* mask all interrupts */ csrw mie, zero

+ csrr t0, mhartid + beqz t0, call_board_init_f +1: j 1b + /* * Set stackpointer in internal/ex RAM to call board_init_f */