Avoid false detection of SMSC FDC37N972 when Infineon TPM is present
Change-Id: Ibfb3af4c5d7675a5d4e27021cbb988c2ce00fd9f
Signed-off-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
Reviewed-on: http://review.coreboot.org/420
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/util/superiotool/smsc.c b/util/superiotool/smsc.c
index 17925ae..012ffbd 100644
--- a/util/superiotool/smsc.c
+++ b/util/superiotool/smsc.c
@@ -844,6 +844,19 @@
return;
}
+ /* Infineon TPM causes false match of FDC37N972 */
+ if (idreg == DEVICE_ID_REG && revreg == DEVICE_REV_REG &&
+ id == 0x0b && rev == 0x00) {
+ /* Infineon sets config port in 0x27:0x26, but SMSC does not */
+ if (((regval(port, 0x27)<<8)|regval(port, 0x26)) == port) {
+ if (verbose)
+ printf(NOTFOUND "id=0x%02x, rev=0x%02x\n",
+ id, rev);
+ exit_conf_mode_smsc(port);
+ return;
+ }
+ }
+
printf("Found %s %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
(id == 0x77 ? "ASUS" : "SMSC"), get_superio_name(reg_table, id),
id, rev, port);