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Set MMU_IO_SIZE to 0x4000 0000. Boots OK

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Lee Lup Yuen 2023-11-12 07:45:36 +08:00
parent 594d345a19
commit 82bf34fdb4
1 changed files with 17 additions and 2 deletions
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@ -2052,9 +2052,18 @@ _assert: Assertion failed ret > 0: at file: init/nx_bringup.c:302 task: AppBring
[(Source)](https://gist.github.com/lupyuen/124aa56c263e51d9306e0d70321f2864)
TODO: Map PLIC as L2 at 0xE000 0000: Fails with IRQ 5
_What if we map PLIC as L2 at 0xE000 0000?_
[Add L1 for 0xC000 0000. Move apps to 0x8000 0000. NSH starts OK yay!](https://gist.github.com/lupyuen/0f4bd7efc4d2d2839eba5ad62349af35)
This fails with IRQ 5...
```c
// Map PLIC as L2
map_region(0xE0000000, 0xE0000000, 0x10000000, MMU_IO_FLAGS);
```
_What if we add L1 for 0xC000 0000? Move apps to 0x8000 0000?_
NSH starts OK yay! Though we wasted a whole chunk of L1 Addresses (Size 0x4000 0000) just for PLIC...
```text
uart_register: Registering /dev/console
@ -2084,6 +2093,12 @@ riscv_dispatch_irq: irq=8
nx_start: CPU0: Beginning Idle Loop
```
[(Source)](https://gist.github.com/lupyuen/0f4bd7efc4d2d2839eba5ad62349af35)
TODO: Add L2 for PLIC
TODO: Who maps the User Memory for `lnvaddr=0x50600000`?
# Documentation for Ox64 BL808
- ["Ox64 BL808 RISC-V SBC: Booting Linux and (maybe) Apache NuttX RTOS"](https://lupyuen.github.io/articles/ox64)