1 files changed, 48 insertions, 0 deletions
diff --git a/board/engicam/stm32mp1/spl.c b/board/engicam/stm32mp1/spl.c
new file mode 100644
index 00000000000..79adb5f5295
--- /dev/null
+++ b/board/engicam/stm32mp1/spl.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2020 Engicam S.r.l.
+ * Copyright (C) 2020 Amarula Solutions(India)
+ */
+
+#include <common.h>
+#include <asm/io.h>
+
+/* board early initialisation in board_f: need to use global variable */
+static u32 opp_voltage_mv __section(".data");
+
+void board_vddcore_init(u32 voltage_mv)
+{
+	if (IS_ENABLED(CONFIG_PMIC_STPMIC1) && CONFIG_IS_ENABLED(POWER_SUPPORT))
+		opp_voltage_mv = voltage_mv;
+}
+
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+#if (CONFIG_DEBUG_UART_BASE == STM32_UART4_BASE)
+
+#define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0A00)
+#define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0A28)
+
+	/* UART4 clock enable */
+	setbits_le32(RCC_MP_APB1ENSETR, BIT(16));
+
+#define GPIOG_BASE 0x50008000
+	/* GPIOG clock enable */
+	writel(BIT(6), RCC_MP_AHB4ENSETR);
+	/* GPIO configuration for ST boards: Uart4 TX = G11 */
+	writel(0xffbfffff, GPIOG_BASE + 0x00);
+	writel(0x00006000, GPIOG_BASE + 0x24);
+#else
+
+#error("CONFIG_DEBUG_UART_BASE: not supported value")
+
+#endif
+}
+#endif