diff options
| -rw-r--r-- | lib/utils/irqchip/imsic.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/utils/irqchip/imsic.c b/lib/utils/irqchip/imsic.c index f2a35c6..02e3a33 100644 --- a/lib/utils/irqchip/imsic.c +++ b/lib/utils/irqchip/imsic.c @@ -12,6 +12,7 @@ #include <sbi/riscv_io.h> #include <sbi/riscv_encoding.h> #include <sbi/sbi_console.h> +#include <sbi/sbi_csr_detect.h> #include <sbi/sbi_domain.h> #include <sbi/sbi_ipi.h> #include <sbi/sbi_irqchip.h> @@ -222,6 +223,8 @@ static void imsic_local_eix_update(unsigned long base_id, void imsic_local_irqchip_init(void) { + struct sbi_trap_info trap = { 0 }; + /* * This function is expected to be called from: * 1) nascent_init() platform callback which is called @@ -231,6 +234,11 @@ void imsic_local_irqchip_init(void) * in boot-up path. */ + /* If Smaia not available then do nothing */ + csr_read_allowed(CSR_MTOPI, (ulong)&trap); + if (trap.cause) + return; + /* Setup threshold to allow all enabled interrupts */ imsic_csr_write(IMSIC_EITHRESHOLD, IMSIC_ENABLE_EITHRESHOLD); |