Hi List,
as some may know I'am working on an SPL for the devkit8000. Now I have a problem with the UART init where I hope someone on the list can help.
My problem is in drivers/serial/serial.c with the function calc_divisor. With my defines this function is essentially just this: return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) / (MODE_X_DIV * gd->baudrate);
(Where MODE_X_DIV=16)
If i try to execute this line (with the step instruction of gdb/openOCD) the debugger just does not return and I have to use Strg+c to get a prompt.
Then the PC is 0x4020ffd4 (upper region of SRAM) and the CPSR is 0x600001d7
I think I have some problem with the division/multiplication functions as there is nothing else in this line which may cause trouble (returns and function calls worked before).
U-boot is running in SRAM no SDRAM init yet.
Has someone an idea where I can start looking? Maybe a known pitfall for beginners? More information needed?
Thanks! Simon