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| author | Randall Spangler <rspangler@chromium.org> | 2016-08-05 10:25:42 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2016-09-24 13:53:26 -0700 |
| commit | b94747d501ad7e4347b50c3ea55e615422d96212 (patch) | |
| tree | b2c078ca5b87a8af29827474789475903f5b316f /include/link_defs.h | |
| parent | 5fa727805ca3222e9268755c54c15bbf87c5b2bd (diff) | |
| download | chrome-ec-b94747d501ad7e4347b50c3ea55e615422d96212.tar.gz | |
cr50: reset only the TPM state on SYS_RST_L
Rather than doing a full cr50 reset when the system reset SYS_RST_L is
asserted, just reset the state of the TPM task and library. Re-clear
.bss for those modules, then re-initialize.
BRANCH=none
BUG=chrome-os-partner:52366
CQ-DEPEND=CL:366792
TEST=make buildall; test on Gru
Trigger a SYS_RST_L by using the AP's reboot command, power
off/on, log in/out/in.
See that the Cr50 does not reboot and the firmware and userspace
are still happy about the TPM.
Change-Id: I32cd2bb72316f68c74db77a20a8d09112b402d4b
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/361680
Diffstat (limited to 'include/link_defs.h')
| -rw-r--r-- | include/link_defs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/link_defs.h b/include/link_defs.h index 69b964d1d8..e55da8bd50 100644 --- a/include/link_defs.h +++ b/include/link_defs.h @@ -87,6 +87,12 @@ extern const void *__irqhandler[]; /* Shared memory buffer. Use via shared_mem.h interface. */ extern uint8_t __shared_mem_buf[]; +/* Image sections used by the TPM2 library */ +extern uint8_t *__bss_libtpm2_start; +extern uint8_t *__bss_libtpm2_end; +extern uint8_t *__data_libtpm2_start; +extern uint8_t *__data_libtpm2_end; + /* Image sections. */ extern const void *__ro_end; extern const void *__data_start; |