diff options
Diffstat (limited to 'kernel/plic.c')
| -rw-r--r-- | kernel/plic.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/plic.c b/kernel/plic.c index 0f19ab0..cc9a97e 100644 --- a/kernel/plic.c +++ b/kernel/plic.c @@ -11,8 +11,9 @@ void plicinit(void) { - // set uart's priority to be non-zero (otherwise disabled). + // set desired IRQ priorities non-zero (otherwise disabled). *(uint32*)(PLIC + UART0_IRQ*4) = 1; + *(uint32*)(PLIC + VIRTIO_IRQ*4) = 1; } void @@ -21,11 +22,9 @@ plicinithart(void) int hart = cpuid(); // set uart's enable bit for this hart's S-mode. - //*(uint32*)(PLIC + 0x2080)= (1 << UART0_IRQ); - *(uint32*)PLIC_SENABLE(hart)= (1 << UART0_IRQ); + *(uint32*)PLIC_SENABLE(hart)= (1 << UART0_IRQ) | (1 << VIRTIO_IRQ); // set this hart's S-mode priority threshold to 0. - //*(uint32*)(PLIC + 0x201000) = 0; *(uint32*)PLIC_SPRIORITY(hart) = 0; } |