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authorAaron Durbin <adurbin@chromium.org>2013-05-10 00:40:56 -0500
committerAaron Durbin <adurbin@google.com>2013-05-16 01:29:59 +0200
commitcb997d3710900d5950d244edd607e25bb45ea962 (patch)
tree531969eab4fc936c97bf1909605031548d056def /src/drivers
parent716738a6b84535f731ee9749f161505945eab93c (diff)
downloadcoreboot-cb997d3710900d5950d244edd607e25bb45ea962.tar.xz
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> Reviewed-on: http://review.coreboot.org/3233 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/drivers')
-rw-r--r--src/drivers/pc80/tpm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/drivers/pc80/tpm.c b/src/drivers/pc80/tpm.c
index c7b50816be..9a4fc096ff 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;