hal/riscv64: remove timer interrupts

RISC-V provides 64 bit monotonic timer, which value can be easily read, so interrupts in PLO are not necessary. JIRA: RTOS-813
phoenix-rtos · Apr 9, 2024 · d46b52c · d46b52c
1 parent d2fa683
commit d46b52c
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diff --git a/hal/riscv64/generic/hal.c b/hal/riscv64/generic/hal.c
@@ -37,8 +37,6 @@ extern char __bss_start[], __bss_end[];
 extern char __heap_base[], __heap_limit[];
 extern char __stack_top[], __stack_limit[];
 
-/* Timer */
-extern void timer_init(void);
 
 /* Interrupts */
 extern void interrupts_init(void);
@@ -50,7 +48,6 @@ void hal_init(void)
 	dtb_parse(dtbAddr);
 	sbi_init();
 	interrupts_init();
-	timer_init();
 }
 
 

diff --git a/hal/riscv64/timer.c b/hal/riscv64/timer.c
@@ -15,36 +15,8 @@
 
 #include <hal/hal.h>
 
-/* CLINT Timer interrupt */
-#define TIMER_IRQ (5u | CLINT_IRQ_FLG)
-
-
-static struct {
-	u32 interval;
-} timer_common;
-
-
-static int timer_irqHandler(unsigned int n, void *arg)
-{
-	(void)n;
-	(void)arg;
-
-	sbi_setTimer(csr_read(time) + timer_common.interval);
-
-	return 0;
-}
-
 
 time_t hal_timerGet(void)
 {
 	return csr_read(time) / (TIMER_FREQ / 1000);
 }
-
-
-void timer_init(void)
-{
-	timer_common.interval = TIMER_FREQ / 1000; /* 1ms */
-
-	hal_interruptsSet(TIMER_IRQ, timer_irqHandler, NULL);
-	sbi_setTimer(csr_read(time) + timer_common.interval);
-}