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Enhancements and Bug Fixes for F1Kx Port (#1169)

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Fix FPU stack order issue and Improve FPU checking flow
Fix Interrupt depth comparison logic
Fix parameter mismatch in portmacro.h file
Add comment to explain assembly code
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Trong Nguyen 2024-11-05 15:09:50 +07:00 • committed by GitHub
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portable/CCRH/F1Kx/README.md
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@ -23,8 +23,8 @@ The test project can be found [here](https://github.com/FreeRTOS/FreeRTOS-Commun
## Note
1. Configure IPIR Interrupt: Ensure that the bit specifying the destination for binding (requesting) an interrupt is enabled (e.g: IBDxxx register of F1KH-D8) (1)
2. `Channel 0` and address `0xFFFEEC00` are used as default configuration for configIPIR_CHANNEL and configEXCLUSIVE_ADDRESS, in case of resource confliction other channel/address can be used. (2)
3. The minimal stack size (configMINIMAL_STACK_SIZE) must be included the reserved memory for nested interrupt. This formula can be referred: `(task_context_size) * (1 + configMAX_INT_NESTING) + Stack_depth_of_taskcode`
In which, `task_context_size` is calculated as `36*4bytes = 144bytes` (when FPU enabled) or `34*4bytes = 136` (when FPU disabled), configMAX_INT_NESTING is 02 as default.
3. The minimal stack size (configMINIMAL_STACK_SIZE) must be included the reserved memory for nested interrupt. This formula can be referred: `(task_context_size) * (2 + configMAX_INT_NESTING) + Stack_depth_of_taskcode`
In which, `task_context_size` is calculated as `36*4bytes = 144bytes` (when FPU enabled) or `34*4bytes = 136` (when FPU disabled), configMAX_INT_NESTING is `02` as default (Note that a value of `0` is not allowed).
4. `configTIMER_PRESCALE`: This value is required in order to correctly configure clock for `CPUCLK_L`. Refer to Hardware Manual at `Table 44.22` for `option byte`: If the user sets the option byte `CKDIVMD to 1`, then `configTIMER_PRESCALE = 4`. Otherwise, if `CKDIVMD is set to 0`, then `configTIMER_PRESCALE = 2`.
(1) This is applicable for F1KH-D8 with SMP only.