2 files changed, 84 insertions, 0 deletions
diff --git a/board/warp7/README b/board/warp7/README
new file mode 100644
index 0000000000..60339da543
--- /dev/null
+++ b/board/warp7/README
@@ -0,0 +1,63 @@
+How to Update U-Boot on Warp7 board
+----------------------------------
+
+Required software on the host PC:
+
+- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader
+
+- dfu-util: http://dfu-util.sourceforge.net/releases/ (if you are in a
+Debian distribution then you can get it via libdfu-dev package)
+
+- libusb: http://libusb.org/ (if you are in a Debian distribution
+then you can get it via libusb-dev and libusb-1.0-0-dev)
+
+In U-Boot folder, build U-Boot for Warp7:
+
+$ make mrproper
+$ make warp7_config
+$ make
+
+This will generate the U-Boot binary called u-boot.imx.
+
+Put warp7 board in USB download mode: 
+
+Remove the CPU board from the base board then put switch 2 in the upper
+position
+
+Connect a USB to serial adapter between the host PC and warp7
+
+Connect a USB cable between the OTG warp7 port and the host PC
+
+Copy u-boot.imx to the imx_usb_loader folder.
+
+Load u-boot.imx via USB:
+
+$ sudo ./imx_usb u-boot.imx
+
+Then U-Boot should start and its messages will appear in the console program.
+
+Open a terminal program such as minicom
+
+Use the default environment variables:
+
+=> env default -f -a
+=> saveenv
+
+Run the DFU command:
+=> dfu 0 mmc 0
+
+Transfer u-boot.imx that will be flashed into the eMMC:
+
+$ sudo dfu-util -D u-boot.imx -a boot
+
+Then on the U-Boot prompt the following message should be seen after a
+successful upgrade:
+
+#DOWNLOAD ... OK
+Ctrl+C to exit ...
+
+Remove power from the warp7 board.
+
+Put warp7 board into normal boot mode (put the switch 2 in the lower position)
+
+Power up the board and the new updated U-Boot should boot from eMMC
diff --git a/board/warp7/warp7.c b/board/warp7/warp7.c
index 8c5bf9a524..27e31f35d5 100644
--- a/board/warp7/warp7.c
+++ b/board/warp7/warp7.c
@@ -32,6 +32,10 @@ int dram_init(void)
 	return 0;
 }
 
+static iomux_v3_cfg_t const wdog_pads[] = {
+	MX7D_PAD_GPIO1_IO00__WDOG1_WDOG_B | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
 static iomux_v3_cfg_t const uart1_pads[] = {
 	MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 	MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
@@ -100,3 +104,20 @@ int board_usb_phy_mode(int port)
 {
 	return USB_INIT_DEVICE;
 }
+
+int board_late_init(void)
+{
+	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+
+	set_wdog_reset(wdog);
+
+	/*
+	 * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4),
+	 * since we use PMIC_PWRON to reset the board.
+	 */
+	clrsetbits_le16(&wdog->wcr, 0, 0x10);
+
+	return 0;
+}