Hi,
Ok with respect to the 'linux' kernel i am unlearned in this regard of
kernel debug information. Is there a configuration item in the build of
the kernel which produces debug information in the vmlinux file? Or do
i need to find the build sequence and add -g option to the Makefile's
compile and linker flags?
Also, i'm getting printk function execution and hoping i can set this
output to send out over one of the serial ports on this uC (Atmel ARM7).
Does the uClinux printk output over a 'standard' uC serial connection?
Ok, reading archive i see the 'kernel command line' needs to get the
location of the serial connection (e.g. /dev/ttyS0). How or where does
the kernel command line get set during startup of the kernel? I'm
assuming some memory location. Noted M68K archive mail Looked for a
'config.c' file for the arm arch but couldn't find it for the ARM7.
ok nm, another archive response says printk goes to a buffer in memory.
:| Is it not possible setup a serial connection early on and output
this information during kernel startup execution? The another archive
message indicates otherwise "How to bind console to early printk'. If
this is the case then i do appear to have the console setup for early
printk.
A few questions still remain on when printk's will output to the serial
console. Immediately on the first printk or after some point in kernel
initialization sequence? And does a kernel command line come into play
here and where is the kernel command line for the ARM7?
tia for your help - bob
Atmel ARM7 on AT91FR40162S or AT91SAM7ES512
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