From b225583881c82eaab3059af9277c091432d50266 Mon Sep 17 00:00:00 2001 From: Atish Patra Date: Tue, 5 Mar 2019 18:03:27 -0800 Subject: firmware: Add nop to reduce bus traffic. All the non-boot harts run in a tight loop which may cause a heavy load on the memory bus. This may delay the boot hart to complete the cold boot process. Introduce few nop that will ease up the traffic. Signed-off-by: Atish Patra --- firmware/fw_base.S | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'firmware') diff --git a/firmware/fw_base.S b/firmware/fw_base.S index 9b525cc..dccaef1 100644 --- a/firmware/fw_base.S +++ b/firmware/fw_base.S @@ -116,6 +116,10 @@ _fdt_reloc_done: _wait_for_boot_hart: la a4, _boot_hart_done REG_L a5, (a4) + /* Reduce the bus traffic so that boot hart may proceed faster */ + nop + nop + nop beqz a5, _wait_for_boot_hart _start_warm: -- cgit v1.2.3