board: stm32mp1: move the function board_debug_uart_init in spl.c

Move the debug function board_debug_uart_init in spl.c
as the debug_uart_init() function is called in arch_cpu_init()
only for SPL and remove the board.c file.

For TFABOOT, the UART TX pin configuration is done in TF-A.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

diff --git a/board/st/stm32mp1/Makefile b/board/st/stm32mp1/Makefile
index 8188075..65560df 100644 (file)
--- a/board/st/stm32mp1/Makefile
+++ b/board/st/stm32mp1/Makefile
@@ -8,5 +8,3 @@ obj-y += spl.o
 else
 obj-y += stm32mp1.o
 endif
-
-obj-y += board.o

diff --git a/board/st/stm32mp1/spl.c b/board/st/stm32mp1/spl.c
index 9a83da8..a6a4178 100644 (file)
--- a/board/st/stm32mp1/spl.c
+++ b/board/st/stm32mp1/spl.c
@@ -6,7 +6,10 @@
 #include <config.h>
 #include <common.h>
 #include <init.h>
+#include <asm/io.h>
 #include <asm/arch/sys_proto.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
 #include "../common/stpmic1.h"
 
 /* board early initialisation in board_f: need to use global variable */
@@ -25,3 +28,28 @@ 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