Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3233
-gerrit
commit 8139065652ecfb721838af176533eeaab0066772 Author: Aaron Durbin adurbin@chromium.org Date: Fri May 10 00:40:56 2013 -0500
pc80/tpm: allow for cache-as-ram migration
As the TPM driver can be accessed in romstage after cache-as-ram is torn down use the cache-as-ram migration API to dynamically determine the global variable address.
Change-Id: I149d7c130bc3677ed52282095670c07a76c34439 Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/drivers/pc80/tpm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/drivers/pc80/tpm.c b/src/drivers/pc80/tpm.c index c7b5081..9a4fc09 100644 --- a/src/drivers/pc80/tpm.c +++ b/src/drivers/pc80/tpm.c @@ -278,7 +278,7 @@ static u32 tis_probe(void) u16 vid, did; int i;
- if (vendor_dev_id) + if (car_get_var(vendor_dev_id)) return 0; /* Already probed. */
didvid = tpm_read(0, TIS_REG_DID_VID); @@ -287,7 +287,7 @@ static u32 tis_probe(void) return TPM_DRIVER_ERR; }
- vendor_dev_id = didvid; + car_set_var(vendor_dev_id, didvid);
vid = didvid & 0xffff; did = (didvid >> 16) & 0xffff;