Messages in this thread | | | From | "Ulrich Windl" <> | Date | Thu, 2 May 1996 12:28:11 +0200 | Subject | Re: Serial Console mini HOWTO |
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On 1 May 96 at 19:46, Larry McVoy wrote:
> I suffered to get this to work, you shouldn't have to. There is a patch below > that you need to apply, I'll ship it to Linus too. [...] > > *** 3.91/init/main.c Tue Apr 16 00:27:09 1996 > --- linux/init/main.c Tue Apr 30 11:30:10 1996 > *************** > *** 57,62 **** > --- 57,63 ---- > extern long pci_init(long, long); > extern void sysctl_init(void); > > + extern void console_setup(char *str, int *ints); > extern void no_scroll(char *str, int *ints); > extern void swap_setup(char *str, int *ints); > extern void buff_setup(char *str, int *ints); > *************** > *** 213,218 **** > --- 221,227 ---- > } bootsetups[] = { > { "reserve=", reserve_setup }, > { "profile=", profile_setup }, > + { "console=", console_setup }, > #ifdef CONFIG_BLK_DEV_RAM > { "ramdisk_start=", ramdisk_start_setup }, > { "load_ramdisk=", load_ramdisk }, > > *** old/drivers/char/console.c Wed Mar 20 01:39:51 1996 > --- linux/drivers/char/console.c Wed May 1 00:43:16 1996 > *************** > *** 183,188 **** > --- 183,189 ---- > static long blank_origin, blank__origin, unblank_origin; > > > + #define CONFIG_SERIAL_ECHO > #ifdef CONFIG_SERIAL_ECHO > > #include <linux/serial_reg.h> > *************** > *** 190,201 **** > extern int serial_echo_init (int base); > extern int serial_echo_print (const char *s); > > - /* > - * this defines the address for the port to which printk echoing is done > - * when CONFIG_SERIAL_ECHO is defined > - */ > - #define SERIAL_ECHO_PORT 0x3f8 /* COM1 */ > - > static int serial_echo_port = 0; > > #define serial_echo_outb(v,a) outb((v),(a)+serial_echo_port) > *************** > *** 292,302 **** > --- 287,309 ---- > comstat = serial_echo_inb(UART_RX); /* COM? RBR */ > serial_echo_outb(0x00, UART_IER); /* Disable all interrupts */ > > + printk("Serial console on ttyS%d\n", base == 0x2f8 ? 0 : 1);
I'm not sure whether this is always correct. I can change port addresses in BIOS. What about more that two serial ports?
Ulrich
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