Various USB related patches

- Add support for mpc8xx USB device.
- Add support for Common Device Class - Abstract Control Model USB console.
- Add support for flow control in USB slave devices.
- Add support for switching between gserial and cdc_acm using environment.
- Minor changes to usbdcore_omap1510.c usbdcore_omap1510.h
- Update usbcore slightly to ease host enumeration.
- Fix non-portable endian problems in usbdcore and usbdcore_ep0.
- Add AdderUSB_config as a defconfig to enable usage of the USB console
  by default with the Adder87x U-Boot port.
Patches by Bryan O'Donoghue <bodonoghue@codehermit.ie>, 29 May 2006

1 files changed, 63 insertions, 1 deletions

diff --git a/README b/README
index 3ffef62538..25e8971bca 100644
--- a/README
+++ b/README
@@ -862,7 +862,69 @@ The following options need to be configured:
                                 for differential drivers: 0x00001000
                                 for single ended drivers: 0x00005000
 
-
+- USB Device:
+                Define the below if you wish to use the USB console.
+                Once firmware is rebuilt from a serial console issue the
+                command "setenv stdin usbtty; setenv stdout usbtty" and
+                attach your usb cable. The Unix command "dmesg" should print
+                it has found a new device. The environment variable usbtty
+                can be set to gserial or cdc_acm to enable your device to
+                appear to a USB host as a Linux gserial device or a 
+                Common Device Class Abstract Control Model serial device.
+                If you select usbtty = gserial you should be able to enumerate
+                a Linux host by
+                # modprobe usbserial vendor=0xVendorID product=0xProductID
+                else if using cdc_acm, simply setting the environment
+                variable usbtty to be cdc_acm should suffice. The following
+                might be defined in YourBoardName.h
+        
+                        CONFIG_USB_DEVICE
+                        Define this to build a UDC device
+
+                        CONFIG_USB_TTY
+                        Define this to have a tty type of device available to
+                        talk to the UDC device
+                
+                        CFG_CONSOLE_IS_IN_ENV
+                        Define this if you want stdin, stdout &/or stderr to
+                        be set to usbtty.
+
+                        mpc8xx:
+                                CFG_USB_EXTC_CLK 0xBLAH
+                                Derive USB clock from external clock "blah"
+                                - CFG_USB_EXTC_CLK 0x02 
+                                
+                                CFG_USB_BRG_CLK 0xBLAH
+                                Derive USB clock from brgclk
+                                - CFG_USB_BRG_CLK 0x04
+
+                If you have a USB-IF assigned VendorID then you may wish to 
+                define your own vendor specific values either in BoardName.h
+                or directly in usbd_vendor_info.h. If you don't define 
+                CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME,
+                CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot
+                should pretend to be a Linux device to it's target host.
+
+                        CONFIG_USBD_MANUFACTURER
+                        Define this string as the name of your company for
+                        - CONFIG_USBD_MANUFACTURER "my company"
+                        
+                        CONFIG_USBD_PRODUCT_NAME
+                        Define this string as the name of your product
+                        - CONFIG_USBD_PRODUCT_NAME "acme usb device"
+
+                        CONFIG_USBD_VENDORID
+                        Define this as your assigned Vendor ID from the USB
+                        Implementors Forum. This *must* be a genuine Vendor ID
+                        to avoid polluting the USB namespace.
+                        - CONFIG_USBD_VENDORID 0xFFFF
+                                 
+                        CONFIG_USBD_PRODUCTID
+                        Define this as the unique Product ID
+                        for your device
+                        - CONFIG_USBD_PRODUCTID 0xFFFF
+                
+                        
 - MMC Support:
                 The MMC controller on the Intel PXA is supported. To
                 enable this define CONFIG_MMC. The MMC can be