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authorAaron Durbin <adurbin@chromium.org>2013-07-24 16:02:14 -0500
committerPatrick Georgi <patrick@georgi-clan.de>2013-12-21 10:49:11 +0100
commitc422002b5f819de97d12dfec16cc55488f28642e (patch)
tree94bcdb8acb9a3ca42ec6049de023ca1f8e0dcf18 /util/cbmem/Makefile
parent980180962a1855220de08779fa4697c78757614a (diff)
tpm: provide explicit tpm register access
An issue was observed using a specific vendor's TPM in that it chokes on access to registers that are not explicitly defined in the PC client specification. The previous driver used generic access functions for reading and writing registers. However, issues come to play when reading from the status register. It read it as a 32-bit value, but that read address 0x1b which is not defined in the spec. Instead of using generic access functions for the tpm registers provide explicit ones. To that end provide more high level wrapper functions to perform the semantic access required. Change-Id: I781b31723f819e1387d7aa25512c83780ea0877f Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/63243 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/4388 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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