> Some IPIs may already be pending when U-Boot is started. This could be a > problem if a secondary hart tries to handle an IPI before the boot hart has > initialized the IPI device. > > This commit introduces a valid bit so secondary harts know when and IPI > originates from U-boot, and it is safe to use the IPI API. The valid bit is > initialized to 0 by board_init_f_init_reserve. Before this, secondary harts > wait in wait_for_gd_init. > > Signed-off-by: Sean Anderson <sean...@gmail.com> > --- > > Changes in v2: > - Use a valid bit instead of addr to validate IPIs > > arch/riscv/include/asm/smp.h | 7 +++++++ > arch/riscv/lib/smp.c | 16 ++++++++++++++-- > 2 files changed, 21 insertions(+), 2 deletions(-)
Reviewed-by: Rick Chen <r...@andestech.com>
