rockchip: rk3328: add spl board file support

rk3328 spl is locate at dram, so do not have strict size limit,
suppose to enable storage media controller driver, load ATF and
U-Boot, then boot into ATF.

Change-Id: I60d0e2b278dc09b04bd098f682c06bd5fb6cecf7
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/mach-rockchip/Makefile

@@ -20,6 +20,7 @@ obj-spl-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board-spl.o
 obj-spl-$(CONFIG_ROCKCHIP_RK322X) += rk322x-board-spl.o spl-boot-order.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board-spl.o
+obj-spl-$(CONFIG_ROCKCHIP_RK3328) += rk3328-board-spl.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3368) += rk3368-board-spl.o spl-boot-order.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3399) += rk3399-board-spl.o spl-boot-order.o
 

arch/arm/mach-rockchip/rk3328-board-spl.c

@@ -0,0 +1,64 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <ram.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <asm/arch/cru_rk3328.h>
+#include <asm/arch/grf_rk3328.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/timer.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void board_debug_uart_init(void)
+{
+}
+
+void board_init_f(ulong dummy)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = spl_early_init();
+ if (ret) {
+ debug("spl_early_init() failed: %d\n", ret);
+ hang();
+ }
+
+ preloader_console_init();
+
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ debug("DRAM init failed: %d\n", ret);
+ return;
+ }
+}
+
+u32 spl_boot_mode(const u32 boot_device)
+{
+ return MMCSD_MODE_RAW;
+}
+
+u32 spl_boot_device(void)
+{
+ return BOOT_DEVICE_MMC1;
+}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+ /* Just empty function now - can't decide what to choose */
+ debug("%s: %s\n", __func__, name);
+
+ return 0;
+}
+#endif