On Wed, 28 Oct 2009 14:36:15 -0500 myuboot@xxxxxxxxxxx wrote: > I just tried UPIO_MEM32 without adding a offset of 3. But the result is > bad - after the kernel initializes the serial console, the console print > out messes up. The early printk is fine because the u-boot initialises > the serial port fine. > > Did I miss anything? Thanks again for your help. I guess you did fine with UPIO_MEM32. Keeping the UPIO_MEM32 approach, I suggest also to fiddle Y/N with CONFIG_SWAP_IO_SPACE (might be that you have it set to Y while you don't really need it, or vice versa). This is since 'readl' uses 'ioswabl' for (potential) byte-swapping of the read value. Take a look at asm/io.h and mangle-port.h. Most important, read your hardware documentation to determine correct access to the memory mapped serial registers. -- Shmulik Ladkani Jungo Ltd.
