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Lee Lup Yuen 2023-12-05 13:08:36 +08:00
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@ -3796,6 +3796,24 @@ PLIC Interrupt Pending (0xe0001000):
TODO: Why reading BL602_UART_FIFO_CONFIG_1 (Offset 0x84) will erase UART Input?
```c
uintptr_t fifo = getreg32(0x30002084);
uintptr_t rx = getreg32(0x3000208c);
_info("fifo=%p, rx=%p\n", fifo, rx);
```
Shows...
```text
nx_start: CPU0: Beginning Idle Loop
bl602_rxavailable: fifo=0x7070120, rx=0
riscv_dispatch_irq: Clear Pending Interrupts, irq=45, claim=0
PLIC Interrupt Pending (0xe0001000):
0000 00 00 00 00 00 00 00 00 ........
```
TODO: Is C906 read-caching the entire page?
# Documentation for Ox64 BL808
![Pine64 Ox64 64-bit RISC-V SBC (Sorry for my substandard soldering)](https://lupyuen.github.io/images/ox64-solder.jpg)