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| author | Roger Zauner <roger@eskimo.com> | 2007-05-09 17:54:25 +0000 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2007-05-09 17:54:25 +0000 |
| commit | a846a5effcf46afac9f65df49ce5350b36dc1096 (patch) | |
| tree | 4eed10b2f2fa16681aeb4db09d7753aece492733 /src/superio/winbond/w83977tf | |
| parent | a59a7788b49ceb52571093667a595566691061ed (diff) | |
| download | coreboot-a846a5effcf46afac9f65df49ce5350b36dc1096.tar.xz | |
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 <roger@eskimo.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2645 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/superio/winbond/w83977tf')
| -rw-r--r-- | src/superio/winbond/w83977tf/w83977tf_early_serial.c | 16 |
1 files changed, 15 insertions, 1 deletions
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 <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 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); } |