rockchip: rk3328: add soc basic support

RK3328 is a SoC from Rockchip with quad-core Cortex-A53 CPU.
It supports two USB2.0 EHCI ports. Other interfaces are very
much like RK3288, the DRAM are 32bit width address and support
address from 0 to 4GB-16MB range.

Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
Add empty arch/arm/mach-rockchip/rk3328/Kconfig to avoid build error:
Signed-off-by: Simon Glass <sjg@chromium.org>

arch/arm/mach-rockchip/Kconfig

@@ -38,6 +38,16 @@ config ROCKCHIP_RK3288
 	  and video codec support. Peripherals include Gigabit Ethernet,
 	  USB2 host and OTG, SDIO, I2S, UARTs, SPI, I2C and PWMs.
 
+config ROCKCHIP_RK3328
+	bool "Support Rockchip RK3328"
+	select ARM64
+	help
+	  The Rockchip RK3328 is a ARM-based SoC with a quad-core Cortex-A53.
+	  including NEON and GPU, 1MB L2 cache, Mali-T7 graphics, two
+	  video interfaces supporting HDMI and eDP, several DDR3 options
+	  and video codec support. Peripherals include Gigabit Ethernet,
+	  USB2 host and OTG, SDIO, I2S, UARTs, SPI, I2C and PWMs.
+
 config ROCKCHIP_RK3399
 	bool "Support Rockchip RK3399"
 	select ARM64
@@ -70,5 +80,6 @@ config SPL_MMC_SUPPORT
 source "arch/arm/mach-rockchip/rk3036/Kconfig"
 source "arch/arm/mach-rockchip/rk3188/Kconfig"
 source "arch/arm/mach-rockchip/rk3288/Kconfig"
+source "arch/arm/mach-rockchip/rk3328/Kconfig"
 source "arch/arm/mach-rockchip/rk3399/Kconfig"
 endif

arch/arm/mach-rockchip/Makefile

@@ -28,4 +28,5 @@ obj-$(CONFIG_ROCKCHIP_RK3188) += rk3188/
 endif
 
 obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288/
+obj-$(CONFIG_ROCKCHIP_RK3328) += rk3328/
 obj-$(CONFIG_ROCKCHIP_RK3399) += rk3399/

arch/arm/mach-rockchip/rk3328/Makefile

@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2016 Rockchip Electronics Co., Ltd
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y += rk3328.o
+obj-y += syscon_rk3328.o

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

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/armv8/mmu.h>
+#include <asm/io.h>
+
+static struct mm_region rk3328_mem_map[] = {
+	{
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		.virt = 0xf0000000UL,
+		.phys = 0xf0000000UL,
+		.size = 0x10000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = rk3328_mem_map;
+
+int arch_cpu_init(void)
+{
+	/* We do some SoC one time setting here. */
+
+	return 0;
+}

arch/arm/mach-rockchip/rk3328/syscon_rk3328.c

@@ -0,0 +1,20 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <dm.h>
+#include <syscon.h>
+
+static const struct udevice_id rk3328_syscon_ids[] = {
+	{ .compatible = "rockchip,rk3328-grf", .data = ROCKCHIP_SYSCON_GRF },
+};
+
+U_BOOT_DRIVER(syscon_rk3328) = {
+	.name = "rk3328_syscon",
+	.id = UCLASS_SYSCON,
+	.of_match = rk3328_syscon_ids,
+};

include/configs/rk3328_common.h

@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef __CONFIG_RK3328_COMMON_H
+#define __CONFIG_RK3328_COMMON_H
+
+#include "rockchip-common.h"
+
+#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_ENV_SIZE			0x2000
+#define CONFIG_SYS_MAXARGS		16
+#define CONFIG_BAUDRATE			1500000
+#define CONFIG_SYS_MALLOC_LEN		(32 << 20)
+#define CONFIG_SYS_CBSIZE		1024
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+#define CONFIG_SYS_NS16550_MEM32
+
+#define CONFIG_SYS_TEXT_BASE		0x00200000
+#define CONFIG_SYS_INIT_SP_ADDR		0x00300000
+#define CONFIG_SYS_LOAD_ADDR		0x00800800
+
+#define CONFIG_SYS_BOOTM_LEN	(64 << 20)	/* 64M */
+
+/* MMC/SD IP block */
+#define CONFIG_BOUNCE_BUFFER
+
+#define CONFIG_SUPPORT_VFAT
+#define CONFIG_FS_FAT
+#define CONFIG_FAT_WRITE
+#define CONFIG_FS_EXT4
+
+/* RAW SD card / eMMC locations. */
+#define CONFIG_SYS_SPI_U_BOOT_OFFS	(128 << 10)
+
+/* FAT sd card locations. */
+#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
+#define CONFIG_SYS_SDRAM_BASE		0
+#define CONFIG_NR_DRAM_BANKS		1
+
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI
+#define CONFIG_SF_DEFAULT_SPEED 20000000
+
+#ifndef CONFIG_SPL_BUILD
+
+#define ENV_MEM_LAYOUT_SETTINGS \
+	"scriptaddr=0x00500000\0" \
+	"pxefile_addr_r=0x00600000\0" \
+	"fdt_addr_r=0x01f00000\0" \
+	"kernel_addr_r=0x02000000\0" \
+	"ramdisk_addr_r=0x04000000\0"
+
+#include <config_distro_bootcmd.h>
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	ENV_MEM_LAYOUT_SETTINGS \
+	"partitions=" PARTS_DEFAULT \
+	BOOTENV
+
+#endif
+
+#endif