colin
/
Hazard3
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Timer struct in IO header

This commit is contained in:
Luke Wren 2021-12-06 17:16:21 +00:00
parent 9e7ea4adb6
commit ac9285846f
2 changed files with 14 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
test/sim/common/tb_cxxrtl_io.h
View File

@ -7,13 +7,23 @@
#define IO_BASE 0x80000000
struct io_hw {
typedef struct {
volatile uint32_t print_char;
volatile uint32_t print_u32;
volatile uint32_t exit;
};
} io_hw_t;
#define mm_io ((io_hw_t *const)IO_BASE)
typedef struct {
volatile uint32_t mtime;
volatile uint32_t mtimeh;
volatile uint32_t mtimecmp;
volatile uint32_t mtimecmph;
} timer_hw_t;
#define mm_timer ((timer_hw_t *const)(IO_BASE + 0x100))
#define mm_io ((struct io_hw *const)IO_BASE)
static inline void tb_putc(char c) {
mm_io->print_char = (uint32_t)c;

11
test/sim/wfi_loop/main.c
View File

@ -6,15 +6,6 @@
#define __wfi() asm volatile ("wfi")
#define __compiler_mb() asm volatile ("" ::: "memory")
typedef struct {
volatile uint32_t mtime;
volatile uint32_t mtimeh;
volatile uint32_t mtimecmp;
volatile uint32_t mtimecmph;
} timer_hw;
timer_hw *const timer = (timer_hw*)(IO_BASE + 0x100);
int irq_count;
void __attribute__((interrupt)) isr_machine_timer() {
__compiler_mb();
@ -27,7 +18,7 @@ void __attribute__((interrupt)) isr_machine_timer() {
if (irq_count >= MAX_IRQ_COUNT)
asm ("csrc mie, %0" :: "r" (1u << 7));
else
timer->mtimecmp = timer->mtime + TIMER_INTERVAL;
mm_timer->mtimecmp = mm_timer->mtime + TIMER_INTERVAL;
}
int main() {