From a846a5effcf46afac9f65df49ce5350b36dc1096 Mon Sep 17 00:00:00 2001 From: Roger Zauner Date: Wed, 9 May 2007 17:54:25 +0000 Subject: 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 Acked-by: Uwe Hermann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2645 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/superio/winbond/w83977tf/w83977tf_early_serial.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/superio/winbond/w83977tf/w83977tf_early_serial.c b/src/superio/winbond/w83977tf/w83977tf_early_serial.c index fffc16d430..a956e11fc5 100644 --- a/src/superio/winbond/w83977tf/w83977tf_early_serial.c +++ b/src/superio/winbond/w83977tf/w83977tf_early_serial.c @@ -1,11 +1,25 @@ #include #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 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 iobase) +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); } -- cgit v1.2.3