diff options
Diffstat (limited to 'src/superio/winbond/w83627thg/w83627thg_early_serial.c')
| -rw-r--r-- | src/superio/winbond/w83627thg/w83627thg_early_serial.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/superio/winbond/w83627thg/w83627thg_early_serial.c b/src/superio/winbond/w83627thg/w83627thg_early_serial.c new file mode 100644 index 0000000000..328aead94f --- /dev/null +++ b/src/superio/winbond/w83627thg/w83627thg_early_serial.c @@ -0,0 +1,25 @@ +#include <arch/romcc_io.h> +#include "w83627thg.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 w83627thg_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); +} |