Other Parts Discussed in Thread: AM5729
Hi,
please help me with this problem, I've spent two weeks on it and I will really appreciate your help.
I followed TI wiki pages to create a board library for my custom board (based on AM5729). I used the EVM5729 board library, made a copy, and modified it since my custom board is similar to that. Now I want to create an MLO file for this custom board SBL but I couldn't find a guide on how to do that.
What I did so far, was to just copy sbl folder (boot/sbl/board/evmAM572x) for evmAM572xand rename the folder to my custom board (same name as steps above for the actual board library). Then I called make to create MLO for the board and it created that. now I copy that to a bootable sd card but I don't see anything on my UART, I think the initialization should printt something on uart but I don't see anything. I did this renaming because I thought the make file uses the folder name to use the previously built files.
I also changed BOARD_UART_INSTANCE to my custom board uart that I am using (INSTANCE=0, relating to uart 1). why is nothing happening? do I need an app file as well or the MLO should be enough to trigger print on uart ? What steps did I miss ?
I think the files for evm572x that I used already had clocks for UART1 (INSTANCE=0) because I see the following lines in my customboard_clock.c:
CSL_FINST(l4PerCmReg->CM_L4PER_UART1_CLKCTRL_REG,
L4PER_CM_CORE_COMPONENT_CM_L4PER_UART1_CLKCTRL_REG_MODULEMODE, ENABLE);
while(CSL_L4PER_CM_CORE_COMPONENT_CM_L4PER_UART1_CLKCTRL_REG_IDLEST_FUNC !=
CSL_FEXT(l4PerCmReg->CM_L4PER_UART1_CLKCTRL_REG,
L4PER_CM_CORE_COMPONENT_CM_L4PER_UART1_CLKCTRL_REG_IDLEST));
I guess UART1 here maps to instance 0 of UART that I've set. (because initially the instance was 2 and there is clock code for uart3, so I figured the naming convention).
what am I doing wrong here? why am I not getting any output on the UART ?
I know the UART connection is fine because when I run Linux that is designed for this board, I get uart prints.
Please note that I'm using RTOS SDK not Linux.
One possibility, could it be an EEProm check? I deleted some code related to EEprom because I figured evmAM572x checks for that for validity check, if this could be a problem, can you tell me where in the code I should make changes or comment EEPROM code?
please guide me on the right path, I think I'm almost there but stuck. (p.s I did the ddr config and pinmux, etc too)
Thanks a lot.
