On Tue, Feb 9, 2021, at 5:32 PM, Qing Zhang wrote: > Distinguish between 3A series CPU and 2K1000 CPU UART0. > > Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com> > Signed-off-by: Qing Zhang <zhangq...@loongson.cn> > Signed-off-by: Xingxing Su <suxingx...@loongson.cn> Personally I don't like this kind of quirk. Probably we should use earlycon as Arm later. - Jiaxun > --- > arch/mips/loongson64/init.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c > index 8bef1ebab72d..a8ad02d8d088 100644 > --- a/arch/mips/loongson64/init.c > +++ b/arch/mips/loongson64/init.c > @@ -120,7 +120,10 @@ void __init prom_init(void) > #endif > > /* Hardcode to CPU UART 0 */ > - setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, > 1024); > + if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R) > + setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE), 0, > 1024); > + else > + setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + > 0x1e0), 0, 1024); > > register_smp_ops(&loongson3_smp_ops); > board_nmi_handler_setup = mips_nmi_setup; > -- > 2.20.1 > > -- - Jiaxun
