plat/st: add function get_uart_address

Add a platform function to get address from UART instance.

Change-Id: Iecf052d219788664843bf1f3120964c92d4d85de
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/180869


Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@st.com>
Tested-by: Yann GAUTIER <yann.gautier@st.com>

plat/st/stm32mp1/include/stm32mp1_private.h

@@ -18,6 +18,9 @@ void configure_mmu(void);
 
 void stm32mp1_arch_security_setup(void);
 void stm32mp1_security_setup(void);
+#if STM32MP_UART_PROGRAMMER
+uintptr_t get_uart_address(uint32_t instance_nb);
+#endif
 
 enum boot_device_e get_boot_device(void);
 

plat/st/stm32mp1/stm32mp1_private.c

@@ -120,6 +120,32 @@ uint32_t stm32_get_gpio_bank_offset(unsigned int bank)
 	return bank * GPIO_BANK_OFFSET;
 }
 
+#if STM32MP_UART_PROGRAMMER
+/*
+ * UART Management
+ */
+static const uintptr_t stm32mp1_uart_addresses[8] = {
+	USART1_BASE,
+	USART2_BASE,
+	USART3_BASE,
+	UART4_BASE,
+	UART5_BASE,
+	USART6_BASE,
+	UART7_BASE,
+	UART8_BASE,
+};
+
+uintptr_t get_uart_address(uint32_t instance_nb)
+{
+	if ((instance_nb == 0U) ||
+	    (instance_nb > ARRAY_SIZE(stm32mp1_uart_addresses))) {
+		return 0U;
+	}
+
+	return stm32mp1_uart_addresses[instance_nb - 1U];
+}
+#endif
+
 unsigned long stm32_get_gpio_bank_clock(unsigned int bank)
 {
 	if (bank == GPIO_BANK_Z) {