Author: uwe
Date: 2007-05-11 13:17:58 +0200 (Fri, 11 May 2007)
New Revision: 2662
Modified:
trunk/LinuxBIOSv2/src/superio/winbond/w83627thf/w83627thf_early_serial.c
Log:
The Super I/O needs 0x87 sent twice to 0x2e (or 0x4e) to enable extended
function (power-on strapping). Although this is already done in superio.c,
it's not being done when w83627thf_early_serial.c is executed.
As such, no console_init() without it.
Signed-off-by: Roger Zauner <roger(a)eskimo.com>
Signed-off-by: Uwe Hermann <uwe(a)hermann-uwe.de>
Acked-by: Uwe Hermann <uwe(a)hermann-uwe.de>
Modified: trunk/LinuxBIOSv2/src/superio/winbond/w83627thf/w83627thf_early_serial.c
===================================================================
--- trunk/LinuxBIOSv2/src/superio/winbond/w83627thf/w83627thf_early_serial.c 2007-05-10 23:59:20 UTC (rev 2661)
+++ trunk/LinuxBIOSv2/src/superio/winbond/w83627thf/w83627thf_early_serial.c 2007-05-11 11:17:58 UTC (rev 2662)
@@ -1,11 +1,25 @@
#include <arch/romcc_io.h>
#include "w83627thf.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 w83627thf_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 w83627thf_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);
}