diff options
Diffstat (limited to 'board/eNET/eNET.c')
| -rw-r--r-- | board/eNET/eNET.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/board/eNET/eNET.c b/board/eNET/eNET.c index ad71f7e..7f0e257 100644 --- a/board/eNET/eNET.c +++ b/board/eNET/eNET.c @@ -45,6 +45,9 @@ DECLARE_GLOBAL_DATA_PTR; unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN; +static void enet_timer_isr(void); +static void enet_toggle_run_led(void); + void init_sc520_enet (void) { /* Set CPU Speed to 100MHz */ @@ -160,6 +163,10 @@ int last_stage_init(void) major = minor = 0; + outb(0x00, LED_LATCH_ADDRESS); + + register_timer_isr (enet_timer_isr); + printf("Serck Controls eNET\n"); return 0; @@ -218,3 +225,41 @@ void setup_pcat_compatibility() writeb(SC520_IRQ_DISABLED, &sc520_mmcr->wpvmap); writeb(SC520_IRQ_DISABLED, &sc520_mmcr->icemap); } + +void enet_timer_isr(void) +{ + static long enet_ticks = 0; + + enet_ticks++; + + /* Toggle Watchdog every 100ms */ + if ((enet_ticks % 100) == 0) + hw_watchdog_reset(); + + /* Toggle Run LED every 500ms */ + if ((enet_ticks % 500) == 0) + enet_toggle_run_led(); +} + +void hw_watchdog_reset(void) +{ + /* Watchdog Reset must be atomic */ + long flag = disable_interrupts(); + + if (sc520_mmcr->piodata15_0 & WATCHDOG_PIO_BIT) + sc520_mmcr->pioclr15_0 = WATCHDOG_PIO_BIT; + else + sc520_mmcr->pioset15_0 = WATCHDOG_PIO_BIT; + + if (flag) + enable_interrupts(); +} + +void enet_toggle_run_led(void) +{ + unsigned char leds_state= inb(LED_LATCH_ADDRESS); + if (leds_state & LED_RUN_BITMASK) + outb(leds_state &~ LED_RUN_BITMASK, LED_LATCH_ADDRESS); + else + outb(leds_state | LED_RUN_BITMASK, LED_LATCH_ADDRESS); +} |