> LILO boot:
> kernel
> Loading kernel.......
>
> nothing more happens.
> I can make an input with the terminal emulation for example i can press
> TAB to see the available kernels. But after the message Loading
> kernel....... nothing more happens. What should be the next step in
> loading the kernel ? I am waiting for a message 'uncompressing linux',
You will not see them anyway, because they are written
directly to video memory, and your system doesnot have it.
> what happens between 'loading kernel' ang 'uncompressing linux'?
> I don't know if it is a problem with the bios or something else.
It seems that there's a problem with A20 (though I am not
sure) -- on your system it can be enabled not as usual.
And also it may happen because of keyboard check on boot time.
Try the following code in setup.S
--------------------------------------------------------
#ifdef UNUSUAL_A20
in al,#0x92
or al,#0x2
out #0x92,al
#else
! that was painless, now we enable A20
call empty_8042
mov al,#0xD1 ! command write
out #0x64,al
call empty_8042
mov al,#0xDF ! A20 on
out #0x60,al
call empty_8042
! wait until a20 really *is* enabled; it can take a fair amount of
! time on certain systems; Toshiba Tecras are known to have this
! problem. The memory location used here is the int 0x1f vector,
! which should be safe to use; any *unused* memory location < 0xfff0
! should work here.
#define TEST_ADDR 0x7c
push ds
xor ax,ax ! segment 0x0000
mov ds,ax
dec ax ! segment 0xffff (HMA)
mov gs,ax
mov bx,[TEST_ADDR] ! we want to restore the value later
a20_wait:
inc ax
mov [TEST_ADDR],ax
seg gs
cmp ax,[TEST_ADDR+0x10]
je a20_wait ! loop until no longer aliased
mov [TEST_ADDR],bx ! restore original value
pop ds
! make sure any possible coprocessor is properly reset..
xor ax,ax
out #0xf0,al
call delay
out #0xf1,al
call delay
#endif ! /* UNUSUAL_A20 */
--------------------------------------------------------
insert code #ifdef'ed by UNUSUAL_A20,
#define UNUSUAL_A20,
and recompile kernel.
PS: tell me if this helps :)
Regards,
Konstantin
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