SuperI/O detection now happens unconditionally and before the chipset enable

We could run it after chipset enable, but it definitely has to happen
before board enable because the board enable usually accesses the
SuperI/O. With this patch, it is possible to add a struct superio to the
board enable table for more accurate matching in case subsystem IDs are
ambiguous. This patch focuses on the generic infrastructure aspect and
on support for IT8712F/IT8716F.

Thanks go to Adrian Glaubitz and Ward Vandewege for testing.

Corresponding to flashrom svn r813.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Luc Verhaegen <libv@skynet.be>
Acked-by: Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/internal.c b/internal.c
index cfb83d7..69624a0 100644
--- a/internal.c
+++ b/internal.c
@@ -125,6 +125,17 @@ void release_io_perms(void)
 }
 
 #if INTERNAL_SUPPORT == 1
+struct superio superio = {};
+
+void probe_superio(void)
+{
+	superio = probe_superio_ite();
+#if 0	/* Winbond SuperI/O code is not yet available. */
+	if (superio.vendor == SUPERIO_VENDOR_NONE)
+		superio = probe_superio_winbond();
+#endif
+}
+
 int internal_init(void)
 {
 	int ret = 0;
@@ -142,6 +153,9 @@ int internal_init(void)
 	 */
 	coreboot_init();
 
+	/* Probe for the SuperI/O chip and fill global struct superio. */
+	probe_superio();
+
 	/* try to enable it. Failure IS an option, since not all motherboards
 	 * really need this to be done, etc., etc.
 	 */