diff options
Diffstat (limited to 'arch/riscv/lib/interrupts.c')
| -rw-r--r-- | arch/riscv/lib/interrupts.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c index 3b25c5b7..1122aaf6 100644 --- a/arch/riscv/lib/interrupts.c +++ b/arch/riscv/lib/interrupts.c @@ -13,6 +13,11 @@ #include <asm/system.h> #include <asm/encoding.h> +__attribute__((weak)) int plic_init(void) +{ + return 0; +} + static void _exit_trap(ulong code, ulong epc, struct pt_regs *regs) { static const char * const exception_code[] = { @@ -47,6 +52,8 @@ static void _exit_trap(ulong code, ulong epc, struct pt_regs *regs) int interrupt_init(void) { + debug("[%s,%d]Initialize the plic\n", __func__, __LINE__); + plic_init(); return 0; } @@ -72,10 +79,12 @@ ulong handle_trap(ulong cause, ulong epc, struct pt_regs *regs) is_irq = (cause & MCAUSE_INT); irq = (cause & ~MCAUSE_INT); + debug("[%s,%d]\n", __func__, __LINE__); if (is_irq) { switch (irq) { case IRQ_M_EXT: case IRQ_S_EXT: + debug("[%s,%d]\n", __func__, __LINE__); external_interrupt(0); /* handle external interrupt */ break; case IRQ_M_TIMER: @@ -90,6 +99,7 @@ ulong handle_trap(ulong cause, ulong epc, struct pt_regs *regs) _exit_trap(cause, epc, regs); } + debug("[%s,%d]\n", __func__, __LINE__); return epc; } |