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authorRoger Zauner <roger@eskimo.com>2007-05-11 11:17:58 +0000
committerUwe Hermann <uwe@hermann-uwe.de>2007-05-11 11:17:58 +0000
commit298a693c6b5909d93fc25c95a975c3f8433aff1d (patch)
tree904bd7862abbfeed51e164667b99eebdb37de233
parentf03e4e97ce8dae953735a595a04a62e7b01f6c93 (diff)
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@eskimo.com> Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2662 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
-rw-r--r--src/superio/winbond/w83627thf/w83627thf_early_serial.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/src/superio/winbond/w83627thf/w83627thf_early_serial.c b/src/superio/winbond/w83627thf/w83627thf_early_serial.c
index fb3598c102..325d14dd1f 100644
--- a/src/superio/winbond/w83627thf/w83627thf_early_serial.c
+++ b/src/superio/winbond/w83627thf/w83627thf_early_serial.c
@@ -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 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 iobase)
+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);
}