stm32: Allow QSPI to work on STM32G4.

Adding a QSPI memory chip on a STM32G4 does not work due to some small
issues, which are fixed in this commit:

- Rename QUADSPI1_xxx alt-func names to QUADSPI_xxx, to match the static
  names used in `qspi.c`.

- Enable `mpu.h` macros on G4.

- Don't include I- and D-cache invalidation on G4.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c
index 781aae803..2ef9a4d01 100644
--- a/ports/stm32/qspi.c
+++ b/ports/stm32/qspi.c
@@ -213,11 +213,13 @@ static int qspi_ioctl(void *self_in, uint32_t cmd, uintptr_t arg) {
             qspi_memory_map();
             break;
         case MP_QSPI_IOCTL_MEMORY_MODIFIED: {
+            #if defined(__ICACHE_PRESENT) && (__ICACHE_PRESENT == 1U)
             uintptr_t *addr_len = (uintptr_t *)arg;
             volatile void *addr = (volatile void *)(QSPI_MAP_ADDR + addr_len[0]);
             size_t len = addr_len[1];
             SCB_InvalidateICache_by_Addr(addr, len);
             SCB_InvalidateDCache_by_Addr(addr, len);
+            #endif
             break;
         }
     }