stm32mp1: check if the SoC is single core
Among the variants of STM32MP, the STM32MP151 is a single Cortex-A7 chip.
A function is added to check the part number of the SoC.
If it corresponds to STM32MP151A or STM32MP151C, then the chip has a single
Cortex-A7.
Change-Id: Icac2015c5d03ce0bcb8e99bbaf1ec8ada34be49c
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index f057390..0d0a9c6 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -16,6 +16,8 @@
void stm32mp_save_boot_ctx_address(uintptr_t address);
uintptr_t stm32mp_get_boot_ctx_address(void);
+bool stm32mp_is_single_core(void);
+
/* Return the base address of the DDR controller */
uintptr_t stm32mp_ddrctrl_base(void);
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index c334cd1..38ebcef 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -254,6 +254,30 @@
}
}
+/* Return true when SoC provides a single Cortex-A7 core, and false otherwise */
+bool stm32mp_is_single_core(void)
+{
+ uint32_t part_number;
+ bool ret = false;
+
+ if (get_part_number(&part_number) < 0) {
+ ERROR("Invalid part number, assume single core chip");
+ return true;
+ }
+
+ switch (part_number) {
+ case STM32MP151A_PART_NB:
+ case STM32MP151C_PART_NB:
+ ret = true;
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
uint32_t stm32_iwdg_get_instance(uintptr_t base)
{
switch (base) {