On Sat, Jan 15, 2011 at 10:56:43AM +0100, Marc Bertens wrote:
> Hi Kevin,
Hi - see below.
>
> I'm adding a VT100 serial console to the seabios code.
> Which can be set to port COM1 or COM2.
> I added the interrupt vector in the serial_setup() routine.
> And made the interrupt service routine. The compiling goes
> fine, no problems there. But in the linking stage an error
> is reported to the line of the interrupt service routine:
>
> make
> Compiling whole program out/ccode.16.s
> Compiling (16bit) out/code16.o
> Compiling whole program out/ccode32flat.o
> Building ld scripts (version "pre-0.6.2-20110115_103541-mbertens-desktop")
> Fixed space: 0xe05b-0x10000 total: 8101 slack: 15 Percent slack: 0.2%
> 16bit size: 37264
> 32bit segmented size: 2217
> 32bit flat size: 14007
> 32bit flat init size: 38848
> Linking out/rom16.o
> Stripping out/rom16.strip.o
> Linking out/rom32seg.o
> Stripping out/rom32seg.strip.o
> Linking out/rom.o
> `.discard.func16.src/serial.c.261' referenced in section
> `.text.init_hw.54839' of out/code32flat.o: defined in discarded section
> `.discard.func16.src/serial.c.261' of out/code32flat.o
> make: *** [out/rom.o] Error 1
>
> Can you tell me what i'm doing wrong or missing to do?
>
> Below here are the code snippets:
>
> // INT(3/4)h : Serial Hardware Service Entry Point (for keyboard
> handling)
> void VISIBLE16 handle_console_serial( void )
> {
> ... // my code
> ...
> done:
> eoi_pic1();
> }
>
>
> void
> serial_setup(void)
> {
> ... // orginal code
>
> ...
> #if CONFIG_KEYBOARD_SERIAL
> con_addr = GET_BDA( port_com[ CONFIG_KEYBOARD_SERIAL -
> 1 ] );
> dprintf( 3, "keyboard on serial port %x\n", con_addr );
> # if CONFIG_KEYBOARD_SERIAL == 1 || CONFIG_KEYBOARD_SERIAL == 3
> enable_hwirq( 4, FUNC16( handle_console_serial ) );
> # else
> enable_hwirq( 3, FUNC16( handle_console_serial ) );
> # endif
You need to define an assembler stub (see romlayout.S) that calls
handle_console_serial. Only this assembler stub should be registered
with enable_hwirq(). Looks like you probably just need to add
"DECL_IRQ_ENTRY console_serial", which will allow you do
"enable_hwirq(3, FUNC16(entry_console_serial));"
-Kevin
_______________________________________________
SeaBIOS mailing list
SeaBIOS@seabios.org
http://www.seabios.org/mailman/listinfo/seabios
