atmel, at91: fix smartweb board

since commit: f8b7fff1d5 "serial: atmel_usart: Add clk support"

smartweb board comes not up anymore. Fix it.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>

arch/arm/dts/at91sam9260-smartweb.dts

@@ -18,6 +18,7 @@
 	compatible = "atmel,at91sam9260", "atmel,at91sam9";
 
 	chosen {
+		u-boot,dm-pre-reloc;
 		stdout-path = &dbgu;
 	};
 
@@ -48,6 +49,7 @@
 			};
 
 			dbgu: serial@fffff200 {
+				u-boot,dm-pre-reloc;
 				status = "okay";
 			};
 

board/siemens/smartweb/smartweb.c

@@ -256,12 +256,3 @@ void mem_init(void)
 	sdramc_initialize(ATMEL_BASE_CS1, &setting);
 }
 #endif
-
-static struct atmel_serial_platdata at91sam9260_serial_plat = {
-	.base_addr = ATMEL_BASE_DBGU,
-};
-
-U_BOOT_DEVICE(at91sam9260_serial) = {
-	.name	= "serial_atmel",
-	.platdata = &at91sam9260_serial_plat,
-};

configs/smartweb_defconfig

@@ -7,6 +7,7 @@ CONFIG_TARGET_SMARTWEB=y
 CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_SPL_NAND_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="at91sam9260-smartweb"
 CONFIG_FIT=y
@@ -33,6 +34,8 @@ CONFIG_CMD_FAT=y
 # CONFIG_DOS_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
+CONFIG_CLK=y
+CONFIG_CLK_AT91=y
 CONFIG_DFU_NAND=y
 # CONFIG_MMC is not set
 CONFIG_USB=y

include/configs/smartweb.h

@@ -211,6 +211,9 @@
 #define CONFIG_SYS_INIT_SP_ADDR		0x301000
 #define CONFIG_SPL_STACK_R
 #define CONFIG_SPL_STACK_R_ADDR		CONFIG_SYS_TEXT_BASE
+/* we have only 4k sram in SPL, so cut SYS_MALLOC_F_LEN */
+#undef CONFIG_SYS_MALLOC_F_LEN
+#define CONFIG_SYS_MALLOC_F_LEN 0x400
 #else
 /*
  * Initial stack pointer: 4k - GENERATED_GBL_DATA_SIZE in internal SRAM,