380419738304533366ebc9fd3462351215fd0c6f |
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08-Jul-2014 |
Juan Castillo <juan.castillo@arm.com> |
Add a simple ARM SP805 watchdog driver Based on SP805 Programmer's model (ARM DDI 0270B). This driver provides three public APIs: void sp805_start(uintptr_t base, unsigned long ticks); void sp805_stop(uintptr_t base); void sp805_refresh(uintptr_t base, unsigned long ticks); Upon start, the watchdog starts counting down from the number of ticks specified. When the count reaches 0 an interrupt is triggered. The watchdog restarts counting down from the number of ticks specified. If the count reaches 0 again, the system is reset. A mechanism to handle the interrupt has not been implemented. Instead, the API to refresh the watchdog should be used instead to prevent a system reset. Change-Id: I799d53f8d1213b10b341a4a67fde6486e89a3dab
/device/linaro/bootloader/arm-trusted-firmware/drivers/arm/sp805/sp805.c
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