The Quad-SPI interface is able to manage up to 256Mbytes Flash memory starting from 0x90000000 to 0x9FFFFFFF in the memory mapped mode. Add a dedicated MPU region into stm32_region_config.
See application note AN4760 available at www.st.com
Signed-off-by: Patrice Chotard patrice.chotard@st.com ---
arch/arm/mach-stm32/soc.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-stm32/soc.c b/arch/arm/mach-stm32/soc.c index 738305c..6ae31d3 100644 --- a/arch/arm/mach-stm32/soc.c +++ b/arch/arm/mach-stm32/soc.c @@ -21,6 +21,9 @@ int arch_cpu_init(void) O_I_WB_RD_WR_ALLOC, REGION_16MB }, #endif
+ { 0x90000000, REGION_1, XN_DIS, PRIV_RW_USR_RW, + SHARED_WRITE_BUFFERED, REGION_256MB }, + #if defined(CONFIG_STM32F7) || defined(CONFIG_STM32H7) { 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, O_I_WB_RD_WR_ALLOC, REGION_512MB },