feat(stm32mp1): get CPU info from SYSCFG on STM32MP13
The IDC register from DBGMCU is duplicated in SYSCFG. As SYSCFG is
always accessible, get chip ID and revision ID from there on STM32MP13.
Change-Id: Ib0b6e8f68a2934a45ec0012f69db6c12a60adb17
Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/plat/st/stm32mp1/stm32mp1_syscfg.c b/plat/st/stm32mp1/stm32mp1_syscfg.c
index 6d24b0e..1aabe65 100644
--- a/plat/st/stm32mp1/stm32mp1_syscfg.c
+++ b/plat/st/stm32mp1/stm32mp1_syscfg.c
@@ -9,6 +9,7 @@
#include <drivers/delay_timer.h>
#include <drivers/st/stpmic1.h>
#include <lib/mmio.h>
+#include <lib/utils_def.h>
#include <platform_def.h>
#include <stm32mp_common.h>
@@ -26,6 +27,7 @@
#define SYSCFG_CMPCR 0x20U
#define SYSCFG_CMPENSETR 0x24U
#define SYSCFG_CMPENCLRR 0x28U
+#define SYSCFG_IDC 0x380U
#define CMPCR_CMPENSETR_OFFSET 0x4U
#define CMPCR_CMPENCLRR_OFFSET 0x8U
@@ -70,6 +72,13 @@
*/
#define SYSCFG_CMPENSETR_MPU_EN BIT(0)
+/*
+ * SYSCFG_IDC Register
+ */
+#define SYSCFG_IDC_DEV_ID_MASK GENMASK(11, 0)
+#define SYSCFG_IDC_REV_ID_MASK GENMASK(31, 16)
+#define SYSCFG_IDC_REV_ID_SHIFT 16
+
static void enable_io_comp_cell_finish(uintptr_t cmpcr_off)
{
uint64_t start;
@@ -225,3 +234,22 @@
clk_disable(SYSCFG);
}
+
+/*
+ * @brief Get silicon revision from SYSCFG registers.
+ * @retval chip version (REV_ID).
+ */
+uint32_t stm32mp1_syscfg_get_chip_version(void)
+{
+ return (mmio_read_32(SYSCFG_BASE + SYSCFG_IDC) &
+ SYSCFG_IDC_REV_ID_MASK) >> SYSCFG_IDC_REV_ID_SHIFT;
+}
+
+/*
+ * @brief Get device ID from SYSCFG registers.
+ * @retval device ID (DEV_ID).
+ */
+uint32_t stm32mp1_syscfg_get_chip_dev_id(void)
+{
+ return mmio_read_32(SYSCFG_BASE + SYSCFG_IDC) & SYSCFG_IDC_DEV_ID_MASK;
+}