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fix(riscv): split enable_fpu() to enable_fpu() and clear_fpu()

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This commit is contained in:
Alexey Lapshin
2025-03-04 20:00:00 +07:00
parent 6e0fd570b2
commit 1f8096359d
1 changed files with 5 additions and 2 deletions
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7
components/riscv/include/riscv/rv_utils.h
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@@ -239,10 +239,13 @@ FORCE_INLINE_ATTR void rv_utils_intr_set_threshold(int priority_threshold)
#if SOC_CPU_HAS_FPU
FORCE_INLINE_ATTR bool rv_utils_enable_fpu(void)
FORCE_INLINE_ATTR void rv_utils_enable_fpu(void)
{
/* Set mstatus[14:13] to 0b01 to start the floating-point unit initialization */
/* Set mstatus[14:13] to 0b01 to enable the floating-point unit */
RV_SET_CSR(mstatus, CSR_MSTATUS_FPU_ENA);
}
FORCE_INLINE_ATTR bool rv_utils_clear_fpu(void) {
/* On the ESP32-P4, the FPU can be used directly after setting `mstatus` bit 13.
* Since the interrupt handler expects the FPU states to be either 0b10 or 0b11,
* let's write the FPU CSR and clear the dirty bit afterwards. */