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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>
This commit is contained in:
Jonathan A. Kollasch 2011-11-07 10:43:05 -06:00 committed by Stefan Reinauer
parent 86bb0072b6
commit 522e9e9746
1 changed files with 13 additions and 0 deletions
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13
util/superiotool/smsc.c
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@ -844,6 +844,19 @@ static void probe_idregs_smsc_helper(uint16_t port, uint8_t idreg,
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);