Hi all,
Since console configuration have been deeply modified on 2.6.10
linux kernel, I noticed that enabling "kdb=early" wasn't working well
on my Tiger4 machine. It produced KDB traces on the screen, but keyboard
seemed to be disabled. The following patch may enable this.
Best regards,
Francois WELLENREITER
-- Attached file included as plaintext by Ecartis --
-- File: Bull-kdbearly-2610.patch
diff -auNr linux-2.6.10/drivers/serial/8250_early.c
linux-2.6.10_kdbearly/drivers/serial/8250_early.c
--- linux-2.6.10/drivers/serial/8250_early.c 2004-12-24 22:34:33.000000000
+0100
+++ linux-2.6.10_kdbearly/drivers/serial/8250_early.c 2005-03-01
15:13:39.628943456 +0100
@@ -35,6 +35,13 @@
#include <asm/io.h>
#include <asm/serial.h>
+
+#ifdef CONFIG_KDB
+#include <linux/kdb.h>
+
+static int kdb_serial_line = -1;
+#endif
+
struct early_uart_device {
struct uart_port port;
char options[16]; /* e.g., 115200n8 */
@@ -191,6 +198,31 @@
if ((err = parse_options(device, options)) < 0)
return err;
+
+#ifdef CONFIG_KDB
+ /*
+ * Remember the line number of the first serial
+ * console. We'll make this the kdb serial console too.
+ */
+ if (kdb_serial_line == -1) {
+ kdb_serial_line = console->index;
+ kdb_serial.io_type = device->port.iotype;
+ switch (device->port.iotype) {
+ case SERIAL_IO_MEM:
+#ifdef SERIAL_IO_MEM32
+ case SERIAL_IO_MEM32:
+#endif
+ kdb_serial.iobase = (unsigned long)(device->port.membase);
+ kdb_serial.ioreg_shift = device->port.regshift;
+ break;
+ default:
+ kdb_serial.iobase = device->port.iobase;
+ kdb_serial.ioreg_shift = 0;
+ break;
+ }
+ }
+#endif /* CONFIG_KDB */
+
init_port(device);
return 0;
}
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