From: Sean Anderson [mailto:seanga2@gmail.com] Sent: Tuesday, January 28, 2020 5:40 AM To: U-Boot Mailing List Cc: Bin Meng; Lukas Auer; Anup.Patel@wdc.com; Rick Jian-Zhi Chen(陳建志) Subject: [PATCH] riscv: Remove unnecessary instruction

The add instruction on risc-v can have any three sources and targets, so there is no need for an intermediate mov.

Signed-off-by: Sean Anderson seanga2@gmail.com

Reviewed-by: Rick Chen rick@andestech.com

---

arch/riscv/cpu/start.S | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 1a55b7d570..365163ad19 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -359,9 +359,8 @@ relocate_secondary_harts: call_board_init_r: jal invalidate_icache_all jal flush_dcache_all

•   la      t0, board_init_r
  

•   mv      t4, t0                  /* offset of board_init_r() */
  

•   add     t4, t4, t6              /* real address of board_init_r() */
  

•   la      t0, board_init_r        /* offset of board_init_r() */
  

•   add     t4, t0, t6              /* real address of board_init_r() */
  

/*

• setup parameters for board_init_r

*/