Dear All,
I am new to this U-Boot boot loader environment. We have a AMCC PPC 440EP processor board which is derived from AMCC Yosemite board. I meant, we have prepared (customised) our own board which is equivalent to AMCC Yosemite board. For this board, I build the U-Boot boot loader with the help of ELDK on Ubuntu x86 host system. However, I have modified the following file contents as per my board and processor attributes.
file name located directory ------------- ------------------------ 1) yosemite.h u-boot/include/configs 2) board.c u-boot/arch/powerpc/lib 3) init.S and yosemite.c u-boot/board/amcc/yosemite 4) start.S u-boot/arch/powerpc/cpu/ppc4xx After above four file modifications, the u-boot.bin file is created and able to load into our board. However, we are NOT getting any prompt on the hyper terminal. When we debug the sources through our laterbach debugger, we found that the control entered into the relocate_code() function which is called from board_init_f () function. The board_init_f () function is available in board.c file. However, the relocate_code() is implemented in the start.S file. As this is a assembly file, I am not able to understand it completely.
The memories that we are using in our board are DDR SDRAM (64MB - Bank0), Boot flash (32MB - CS0), Application flash (32MB - CS1). We modified these parameters in the yosemite.h file and after loading the u-boot.bin file, we are able to see all the memories configured correctly. However, we are not getting the U-Boot prompt on the hyper terminal.
Please let me know, If I am missing any thing here.
Any help would be greatly appreciated.
Thanks and Regards, Srinivas G