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sio/winbond: Expose enter/exit configuration state functions 

Certain mainboards, e.g. the ASUS KGPE-D16/KCMA-D8, require
board-specific configuration changes to the SuperIO.  Expose
the functions needed to enter and exit configuration mode
on Winbond devices.

Change-Id: Ic86651872ecafcfe1398201be2b0768bbe460975
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/14891
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Timothy Pearson 2016-05-18 13:31:05 -05:00 committed by Timothy Pearson
parent 09210a1487
commit 9891b4a28b
2 changed files with 5 additions and 2 deletions
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4
src/superio/winbond/common/early_serial.c
View File

@ -42,7 +42,7 @@
#define WINBOND_EXIT_KEY 0xAA #define WINBOND_EXIT_KEY 0xAA
/* Enable configuration: pass entry key '0x87' into index port dev. */ /* Enable configuration: pass entry key '0x87' into index port dev. */
static void pnp_enter_conf_state(pnp_devfn_t dev) void pnp_enter_conf_state(pnp_devfn_t dev)
{ {
u16 port = dev >> 8; u16 port = dev >> 8;
outb(WINBOND_ENTRY_KEY, port); outb(WINBOND_ENTRY_KEY, port);
@ -50,7 +50,7 @@ static void pnp_enter_conf_state(pnp_devfn_t dev)
} }
/* Disable configuration: pass exit key '0xAA' into index port dev. */ /* Disable configuration: pass exit key '0xAA' into index port dev. */
static void pnp_exit_conf_state(pnp_devfn_t dev) void pnp_exit_conf_state(pnp_devfn_t dev)
{ {
u16 port = dev >> 8; u16 port = dev >> 8;
outb(WINBOND_EXIT_KEY, port); outb(WINBOND_EXIT_KEY, port);

3
src/superio/winbond/common/winbond.h
View File

@ -22,4 +22,7 @@
void winbond_enable_serial(pnp_devfn_t dev, u16 iobase); void winbond_enable_serial(pnp_devfn_t dev, u16 iobase);
void pnp_enter_conf_state(pnp_devfn_t dev);
void pnp_exit_conf_state(pnp_devfn_t dev);
#endif /* SUPERIO_WINBOND_COMMON_ROMSTAGE_H */ #endif /* SUPERIO_WINBOND_COMMON_ROMSTAGE_H */