Vboot hash calculation takes ~350 ms during EC boot. Since the hash
task is higher priority than the hook task, this starves all the hooks
during boot.
We could, in theory, fix that simply by swapping the priority of the
hook and hash tasks. But then watchdog detection (in the hook task)
wouldn't detect hangs in the hash task.
A better fix (implemented here) is to convert the hashing operation to
a series of deferred function calls. This gets rid of the hash task
entirely, and allows all pending hooks and other deferred function
calls to take place between each chunk of hashing.
On STM32-based boards, we need to bump up the hook task stack size,
since hashing is called from several layers deep in the hook task
instead of at the top of its own task, but this is still a net win of
several hundred bytes of SRAM.
BUG=chrome-os-partner:24892
BRANCH=rambi
TEST=Boot EC; look for "hash start" and "hash done" debug output.
'taskinfo' shows at least 32 bytes of unused stack for HOOKS task.
'hash ro' runs properly from EC console.
Change-Id: I9e580dc10fc0bc8e44896d84451218ef67578bbe
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/181954
On early snow boards, WP GPIO is not wired to the EC. Now that we have
properly fixed hardware, we should drop workaround for those boards.
BUG=chrome-os-partner:23762
TEST=Build all boards
BRANCH=None
Change-Id: I5dcfaf5497fc36d6b8d7bc5d8975aa18b2d36a1d
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/181090
Reviewed-by: Yung-chieh Lo <yjlou@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This renames constants used in compiler conditionals to uppercase.
BOARD_foo
CHIP_foo
CHIP_FAMILY_foo
CHIP_VARIANT_foo
CORE_foo
Mixed-case constants are still defined by the makefile, but are now no
longer used. I will make one more pass in a week or so to catch any
that are part of someone else's CL, since otherwise this change might
silently merge correctly but result in incorrect compilation. Then I
will remove defining the mixed-case constants.
BUG=chromium:322144
BRANCH=none
TEST=Build all boards. Also, "git grep 'BOARD_[a-z]'" should return no
results (similarly for CHIP, CORE, etc.)
Change-Id: I6418412e9f7ec604a35c2d426d12475dd83e7076
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/179206
Reviewed-by: Vic Yang <victoryang@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Add bug references. Remove one assert that can no longer be triggered.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=build all boards; pass unit tests
Change-Id: I3f4d2e4f2f3343a8d0531cb0715d151eaa4d0b50
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/175293
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
The common/ subdir was getting cluttered. Move drivers for external
components to a new driver/ tree, and move what used to be called
chipset_*.c to a new power/ directory.
This does not move/rename header files or CONFIG options. That will
be done in subsequent steps, since moving and modifying .c files in
the same CL is harder to review.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=build all boards; pass unit tests
Change-Id: I67a3003dc8564783a320335cf0e9620a21982d5e
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173601
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Vic Yang <victoryang@chromium.org>
