diff options
Diffstat (limited to 'arch/riscv/cpu/cpu.c')
| -rw-r--r-- | arch/riscv/cpu/cpu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c index bfa2d4a426..85592f5bee 100644 --- a/arch/riscv/cpu/cpu.c +++ b/arch/riscv/cpu/cpu.c @@ -72,6 +72,17 @@ static int riscv_cpu_probe(void) return 0; } +/* + * This is called on secondary harts just after the IPI is init'd. Currently + * there's nothing to do, since we just need to clear any existing IPIs, and + * that is handled by the sending of an ipi itself. + */ +#if CONFIG_IS_ENABLED(SMP) +static void dummy_pending_ipi_clear(ulong hart, ulong arg0, ulong arg1) +{ +} +#endif + int arch_cpu_init_dm(void) { int ret; @@ -111,6 +122,15 @@ int arch_cpu_init_dm(void) ret = riscv_init_ipi(); if (ret) return ret; + + /* + * Clear all pending IPIs on secondary harts. We don't do anything on + * the boot hart, since we never send an IPI to ourselves, and no + * interrupts are enabled + */ + ret = smp_call_function((ulong)dummy_pending_ipi_clear, 0, 0, 0); + if (ret) + return ret; #endif return 0; |