Hello I'm in the process of porting Linux on our board, based on a arm926ejs based multimedia chip. I finished U-Boot, it boots up and transfers control to Linux, sadly the latter hangs at the very beginning, printing only "Uncompressing Lin.. done, booting t".
With the help JTAG I explored contents of "log_buffer": it ends up with "Calibrating delay loop... " (seems function from calibrate_delay() at $(linux)/init/calibrate.c), nothing happens further. As I see, calibrate_delay() gets invoked a lot later of console_init(), i.e. various messages are supposed to be printed already, bu they are not. I just suspect the problem is somewhere around MMU configuration, which is done on a very early stage, and once we get to console initialization, an invalid serial port address is used -- it's only guess though. My questions are: 1) how to verify MMU gets configured properly or not? 2) do I have to do remap (that's 0x0 points at RAM) on ARM to start off Linux, or it can live without remap? 3) how is defined CONFIG_PAGE_OFFSET, which is used to configure MMU. I know it's in "make config", but what's behind this parameter? Thanks. -- Roman Mashak -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
