Author: uwe
Date: 2007-05-09 19:54:25 +0200 (Wed, 09 May 2007)
New Revision: 2645
Modified:
trunk/LinuxBIOSv2/src/superio/winbond/w83977tf/w83977tf_early_serial.c
Log:
The superio needs 0x87 sent twice to 0x3f0 to enable extended function
(power-on strapping). Although this is already done in superio.c, it's
not being done when w83977tf_early_serial.c is executed. As such, no
console_init() without it.
Signed-off-by: Roger Zauner <[EMAIL PROTECTED]>
Acked-by: Uwe Hermann <[EMAIL PROTECTED]>
Modified: trunk/LinuxBIOSv2/src/superio/winbond/w83977tf/w83977tf_early_serial.c
===================================================================
--- trunk/LinuxBIOSv2/src/superio/winbond/w83977tf/w83977tf_early_serial.c
2007-05-09 15:11:03 UTC (rev 2644)
+++ trunk/LinuxBIOSv2/src/superio/winbond/w83977tf/w83977tf_early_serial.c
2007-05-09 17:54:25 UTC (rev 2645)
@@ -1,11 +1,25 @@
#include <arch/romcc_io.h>
#include "w83977tf.h"
+static inline void pnp_enter_ext_func_mode(device_t dev)
+{
+ unsigned int port = dev >> 8;
+ outb(0x87, port);
+ outb(0x87, port);
+}
-static void w83977tf_enable_serial(device_t dev, unsigned iobase)
+static void pnp_exit_ext_func_mode(device_t dev)
{
+ unsigned int port = dev >> 8;
+ outb(0xaa, port);
+}
+
+static void w83977tf_enable_serial(device_t dev, unsigned int iobase)
+{
+ pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
+ pnp_exit_ext_func_mode(dev);
}
--
linuxbios mailing list
[email protected]
http://www.linuxbios.org/mailman/listinfo/linuxbios
