diff options
| author | Jett Rink <jettrink@google.com> | 2024-06-10 09:31:14 -0600 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2024-06-14 12:33:31 +0000 |
| commit | d41ad724cd2430558e4ecbb5e90b769555b68c34 (patch) | |
| tree | 6d3a3d86a22012a49bea041b1f22d7d6e1916c3c /src/drivers/i2c/tpm | |
| parent | ce9562f6628039e9bb28f60c318f29c56fc4d559 (diff) | |
tpm: Add Ti50 OpenTitan DID_VID
The OpenTitan HW implements the same firmware interface as the Ti50
H1D3C hardware variant; it just has a different DID_VID. Allow this new
DID_VID to be recognized correctly.
BUG=b:324940153
Change-Id: Iaacf6d88bc6067948756c465aac1cd8b24ecae1f
Signed-off-by: Jett Rink <jettrink@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83033
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/drivers/i2c/tpm')
| -rw-r--r-- | src/drivers/i2c/tpm/cr50.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/drivers/i2c/tpm/cr50.c b/src/drivers/i2c/tpm/cr50.c index 3bc98c370a..5f5ca66d5f 100644 --- a/src/drivers/i2c/tpm/cr50.c +++ b/src/drivers/i2c/tpm/cr50.c @@ -34,7 +34,8 @@ #define CR50_TIMEOUT_LONG_MS 2000 /* Long timeout while waiting for TPM */ #define CR50_TIMEOUT_SHORT_MS 2 /* Short timeout during transactions */ #define CR50_DID_VID 0x00281ae0L -#define TI50_DID_VID 0x504a6666L +#define TI50_DT_DID_VID 0x504a6666L +#define TI50_OT_DID_VID 0x50666666L struct tpm_inf_dev { int bus; @@ -449,7 +450,8 @@ static tpm_result_t cr50_i2c_probe(uint32_t *did_vid) rc = cr50_i2c_read(TPM_DID_VID(0), (uint8_t *)did_vid, 4); /* Exit once DID and VID verified */ - if (!rc && (*did_vid == CR50_DID_VID || *did_vid == TI50_DID_VID)) { + if (!rc && (*did_vid == CR50_DID_VID || *did_vid == TI50_DT_DID_VID || + *did_vid == TI50_OT_DID_VID)) { printk(BIOS_INFO, "done! DID_VID 0x%08x\n", *did_vid); return TPM_SUCCESS; } |