rockchip: rk3188: Add main, spl and tpl boards

The rk3188 needs 3 U-Boot stages: a tpl living in 1KB of sram, a spl
the resides in the rest of the sram and loads the regular U-Boot living
in regular ram.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/rk3188-board.c b/arch/arm/mach-rockchip/rk3188-board.c
new file mode 100644
index 0000000..16f3855
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3188-board.c
@@ -0,0 +1,71 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <ram.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pmu_rk3288.h>
+#include <asm/arch/boot_mode.h>
+#include <asm/gpio.h>
+#include <dm/pinctrl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM)
+	struct udevice *pinctrl;
+	int ret;
+
+	/*
+	 * We need to implement sdcard iomux here for the further
+	 * initialization, otherwise, it'll hit sdcard command sending
+	 * timeout exception.
+	 */
+	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
+	if (ret) {
+		debug("%s: Cannot find pinctrl device\n", __func__);
+		goto err;
+	}
+	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
+	if (ret) {
+		debug("%s: Failed to set up SD card\n", __func__);
+		goto err;
+	}
+
+	return 0;
+err:
+	printf("board_init: Error %d\n", ret);
+
+	/* No way to report error here */
+	hang();
+
+	return -1;
+#else
+	return 0;
+#endif
+}
+
+int dram_init(void)
+{
+	/* FIXME: read back ram size from sys_reg2 */
+	gd->ram_size = 0x40000000;
+
+	return 0;
+}
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+	/* Enable D-cache. I-cache is already enabled in start.S */
+	dcache_enable();
+}
+#endif