stm32mp1: Add BL32 SP_min secure monitor
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
diff --git a/plat/st/stm32mp1/stm32mp1_security.c b/plat/st/stm32mp1/stm32mp1_security.c
index 0cdf305..e783c14 100644
--- a/plat/st/stm32mp1/stm32mp1_security.c
+++ b/plat/st/stm32mp1/stm32mp1_security.c
@@ -16,6 +16,46 @@
#include "platform_def.h"
/*******************************************************************************
+ * Initialize the TrustZone Controller. Configure Region 0 with Secure RW access
+ * and allow Non-Secure masters full access.
+ ******************************************************************************/
+static void init_tzc400(void)
+{
+ unsigned long long region_base, region_top;
+ unsigned long long ddr_base = STM32MP1_DDR_BASE;
+ unsigned long long ddr_size = (unsigned long long)dt_get_ddr_size();
+
+ tzc400_init(STM32MP1_TZC_BASE);
+
+ tzc400_disable_filters();
+
+ /* Region 1 set to cover all DRAM at 0xC000_0000. Apply the
+ * same configuration to all filters in the TZC.
+ */
+ region_base = ddr_base;
+ region_top = ddr_base + (ddr_size - 1U);
+ tzc400_configure_region(STM32MP1_FILTER_BIT_ALL, 1,
+ region_base,
+ region_top,
+ TZC_REGION_S_RDWR,
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_A7_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_GPU_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_LCD_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_MDMA_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DMA_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_HOST_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_OTG_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_SDMMC_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_ETH_ID) |
+ TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DAP_ID));
+
+ /* Raise an exception if a NS device tries to access secure memory */
+ tzc400_set_action(TZC_ACTION_ERR);
+
+ tzc400_enable_filters();
+}
+
+/*******************************************************************************
* Initialize the TrustZone Controller.
* Early initialization create only one region with full access to secure.
* This setting is used before and during DDR initialization.
@@ -76,3 +116,12 @@
{
early_init_tzc400();
}
+
+/*******************************************************************************
+ * Initialize the secure environment. At this moment only the TrustZone
+ * Controller is initialized.
+ ******************************************************************************/
+void stm32mp1_security_setup(void)
+{
+ init_tzc400();
+}