qemu/mcu/arm: Enable the FPU init for ARMv8-M.

iabdalkader · dpgeorge · commit 557290f49d13 · 2025-10-24T17:31:51.000+11:00
Signed-off-by: iabdalkader &lt;i.abdalkader@gmail.com&gt;
diff --git a/ports/qemu/mcu/arm/startup.c b/ports/qemu/mcu/arm/startup.c
@@ -47,7 +47,7 @@ __attribute__((naked)) void Reset_Handler(void) {
     for (uint32_t *dest = &_sbss; dest < &_ebss;) {
         *dest++ = 0;
     }
-    #if MICROPY_HW_FPU && defined(__ARM_ARCH_ISA_THUMB) && __ARM_ARCH == 7
+    #if MICROPY_HW_FPU && defined(__ARM_ARCH_ISA_THUMB) && __ARM_ARCH >= 7
     // initialise the FPU (full access to CP10 and CP11, as per B3.2.20)
     *((volatile uint32_t *)0xE000ED88) |= 0x00F00000;
     __asm volatile ("dsb");

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,7 @@ __attribute__((naked)) void Reset_Handler(void) {`
`47`	`47`	`for (uint32_t *dest = &_sbss; dest < &_ebss;) {`
`48`	`48`	`*dest++ = 0;`
`49`	`49`	`}`
`50`		`- #if MICROPY_HW_FPU && defined(__ARM_ARCH_ISA_THUMB) && __ARM_ARCH == 7`
	`50`	`+ #if MICROPY_HW_FPU && defined(__ARM_ARCH_ISA_THUMB) && __ARM_ARCH >= 7`
`51`	`51`	`// initialise the FPU (full access to CP10 and CP11, as per B3.2.20)`
`52`	`52`	`((volatile uint32_t )0xE000ED88) \|= 0x00F00000;`
`53`	`53`	`__asm volatile ("dsb");`