diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c index a4f84667a901..35b8d810833c 100644 --- a/arch/mips/kernel/smp-bmips.c +++ b/arch/mips/kernel/smp-bmips.c @@ -592,6 +592,7 @@ asmlinkage void __weak plat_wired_tlb_setup(void) void bmips_cpu_setup(void) { void __iomem __maybe_unused *cbr = bmips_cbr_addr; + u32 __maybe_unused rac_addr; u32 __maybe_unused cfg; switch (current_cpu_type()) { @@ -620,6 +621,23 @@ void bmips_cpu_setup(void) __raw_readl(cbr + BMIPS_RAC_ADDRESS_RANGE); break; + case CPU_BMIPS4350: + rac_addr = BMIPS_RAC_CONFIG_1; + + if (!(read_c0_brcm_cmt_local() & (1 << 31))) + rac_addr = BMIPS_RAC_CONFIG; + + /* Enable data RAC */ + cfg = __raw_readl(cbr + rac_addr); + __raw_writel(cfg | 0xf, cbr + rac_addr); + __raw_readl(cbr + rac_addr); + + /* Flush stale data out of the readahead cache */ + cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG); + __raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG); + __raw_readl(cbr + BMIPS_RAC_CONFIG); + break; + case CPU_BMIPS4380: /* CBG workaround for early BMIPS4380 CPUs */ switch (read_c0_prid()) {