rockchip: rk3288: add fastboot support

Enable fastboot feature on rk3288.

This path doesn't support the fastboot flash function command entirely.
We will hit "cannot find partition" assertion without specified
partition environment. Define gpt partition layout in specified board
such as firefly-rk3288, then enjoy it!

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/rk3288.dtsi

@@ -454,6 +454,7 @@
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_OTG0>;
 		clock-names = "otg";
+		dr_mode = "otg";
 		phys = <&usbphy0>;
 		phy-names = "usb2-phy";
 		status = "disabled";

arch/arm/mach-rockchip/board.c

@@ -85,6 +85,78 @@ void lowlevel_init(void)
 {
 }
 
+#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
+#include <usb.h>
+#include <usb/dwc2_udc.h>
+
+static struct dwc2_plat_otg_data rk3288_otg_data = {
+	.rx_fifo_sz	= 512,
+	.np_tx_fifo_sz	= 16,
+	.tx_fifo_sz	= 128,
+};
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	int node, phy_node;
+	const char *mode;
+	bool matched = false;
+	const void *blob = gd->fdt_blob;
+	u32 grf_phy_offset;
+
+	/* find the usb_otg node */
+	node = fdt_node_offset_by_compatible(blob, -1,
+					"rockchip,rk3288-usb");
+
+	while (node > 0) {
+		mode = fdt_getprop(blob, node, "dr_mode", NULL);
+		if (mode && strcmp(mode, "otg") == 0) {
+			matched = true;
+			break;
+		}
+
+		node = fdt_node_offset_by_compatible(blob, node,
+					"rockchip,rk3288-usb");
+	}
+	if (!matched) {
+		debug("Not found usb_otg device\n");
+		return -ENODEV;
+	}
+	rk3288_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
+
+	node = fdtdec_lookup_phandle(blob, node, "phys");
+	if (node <= 0) {
+		debug("Not found usb phy device\n");
+		return -ENODEV;
+	}
+
+	phy_node = fdt_parent_offset(blob, node);
+	if (phy_node <= 0) {
+		debug("Not found usb phy device\n");
+		return -ENODEV;
+	}
+
+	rk3288_otg_data.phy_of_node = phy_node;
+	grf_phy_offset = fdtdec_get_addr(blob, node, "reg");
+
+	/* find the grf node */
+	node = fdt_node_offset_by_compatible(blob, -1,
+					"rockchip,rk3288-grf");
+	if (node <= 0) {
+		debug("Not found grf device\n");
+		return -ENODEV;
+	}
+	rk3288_otg_data.regs_phy = grf_phy_offset +
+				fdtdec_get_addr(blob, node, "reg");
+
+	return dwc2_udc_probe(&rk3288_otg_data);
+}
+
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return 0;
+}
+#endif
+
 static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
 		       char * const argv[])
 {

include/configs/rk3288_common.h

@@ -84,6 +84,32 @@
 #define CONFIG_SPI
 #define CONFIG_SF_DEFAULT_SPEED 20000000
 
+/* usb otg */
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_DWC2_OTG
+#define CONFIG_ROCKCHIP_USB2_PHY
+#define CONFIG_USB_GADGET_VBUS_DRAW	0
+
+/* fastboot  */
+#define CONFIG_CMD_FASTBOOT
+#define CONFIG_USB_FUNCTION_FASTBOOT
+#define CONFIG_FASTBOOT_FLASH
+#define CONFIG_FASTBOOT_FLASH_MMC_DEV	1	/* eMMC */
+/* stroe safely fastboot buffer data to the middle of bank */
+#define CONFIG_FASTBOOT_BUF_ADDR	(CONFIG_SYS_SDRAM_BASE \
+					+ SDRAM_BANK_SIZE / 2)
+#define CONFIG_FASTBOOT_BUF_SIZE	0x08000000
+
+#define CONFIG_USB_GADGET_DOWNLOAD
+#define CONFIG_G_DNL_MANUFACTURER	"Rockchip"
+#define CONFIG_G_DNL_VENDOR_NUM		0x2207
+#define CONFIG_G_DNL_PRODUCT_NUM	0x320a
+
+/* Enable gpt partition table */
+#define CONFIG_CMD_GPT
+#define CONFIG_EFI_PARTITION
+
 #ifndef CONFIG_SPL_BUILD
 #include <config_distro_defaults.h>