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superio/common/conf_mode: Provide another common pnp entry/exit 

ITE Super I/O's make use of this method to enter and exit in and out of
their PNP configuration. Provide functions for use in ram stage
component.

Change-Id: I2b546c2b17eefc89aaab4982192f5e9a15a16c2f
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5666
Tested-by: build bot (Jenkins)
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>
This commit is contained in:
Edward O'Callaghan 2014-05-06 17:24:59 +10:00 committed by Rudolf Marek
parent d520840d4c
commit bf9f243857
2 changed files with 28 additions and 1 deletions
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5
src/include/superio/conf_mode.h
View File

@ -27,8 +27,11 @@
void pnp_enter_conf_mode_55(device_t dev);
void pnp_enter_conf_mode_8787(device_t dev);
void pnp_exit_conf_mode_aa(device_t dev);
void pnp_enter_conf_mode_870155aa(device_t dev);
void pnp_exit_conf_mode_0202(device_t dev);
extern const struct pnp_mode_ops pnp_conf_mode_55_aa;
extern const struct pnp_mode_ops pnp_conf_mode_8787_aa;
extern const struct pnp_mode_ops pnp_conf_mode_870155_aa;
#endif
#endif /* DEVICE_PNP_CONF_MODE_H */

24
src/superio/common/conf_mode.c
View File

@ -39,6 +39,25 @@ void pnp_exit_conf_mode_aa(device_t dev)
outb(0xaa, dev->path.pnp.port);
}
void pnp_enter_conf_mode_870155aa(device_t dev)
{
outb(0x87, dev->path.pnp.port);
outb(0x01, dev->path.pnp.port);
outb(0x55, dev->path.pnp.port);
if (dev->path.pnp.port == 0x4e)
outb(0xaa, dev->path.pnp.port);
else
outb(0x55, dev->path.pnp.port);
}
void pnp_exit_conf_mode_0202(device_t dev)
{
outb(0x02, dev->path.pnp.port);
outb(0x02, dev->path.pnp.port + 1);
}
const struct pnp_mode_ops pnp_conf_mode_55_aa = {
.enter_conf_mode = pnp_enter_conf_mode_55,
.exit_conf_mode = pnp_exit_conf_mode_aa,
@ -48,3 +67,8 @@ const struct pnp_mode_ops pnp_conf_mode_8787_aa = {
.enter_conf_mode = pnp_enter_conf_mode_8787,
.exit_conf_mode = pnp_exit_conf_mode_aa,
};
const struct pnp_mode_ops pnp_conf_mode_870155_aa = {
.enter_conf_mode = pnp_enter_conf_mode_870155aa,
.exit_conf_mode = pnp_exit_conf_mode_0202,
};