• Zhou Yanjie's avatar
    MIPS: Ingenic: Disable abandoned HPTLB function. · b02efeb0
    Zhou Yanjie authored
    JZ4760/JZ4770/JZ4775/X1000/X1500 has an abandoned huge page tlb,
    this mode is not compatible with the MIPS standard, it will cause
    tlbmiss and into an infinite loop (line 21 in the tlb-funcs.S)
    when starting the init process. write 0xa9000000 to cp0 register 5
    sel 4 to disable this function to prevent getting stuck. Confirmed
    by Ingenic, this operation will not adversely affect processors
    without HPTLB function.
    Signed-off-by: default avatarZhou Yanjie <zhouyanjie@zoho.com>
    Acked-by: default avatarPaul Cercueil <paul@crapouillou.net>
    Signed-off-by: default avatarPaul Burton <paulburton@kernel.org>
    Cc: linux-mips@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    Cc: ralf@linux-mips.org
    Cc: jhogan@kernel.org
    Cc: jiaxun.yang@flygoat.com
    Cc: gregkh@linuxfoundation.org
    Cc: malat@debian.org
    Cc: tglx@linutronix.de
    Cc: chenhc@lemote.com
    b02efeb0
cpu-probe.c 57.1 KB