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c817977583
This change introduces the following modifications:
When used outside chroot on Goobuntu the serial interface fails to initialize
if parity enable bit is set (for a reason not clearly understood). On top of
that the tcsetattr() return value of zero is not a guarantee of success. To be
sure that the settings came through one is supposed to read back the driver
config and compare it with the desired config.
To add insult to injury, gPrecise driver rejects attempts to enable parity.
Parity setting is not essential in many cases, this is why we check the actual
config and if the only missing setting is parity we print a warning message
and continue.
In case an operation fails, the exit value should reflect that (so
that the autotest suite using the utility could report failure).
Often when the programming attempt is undertaken soon after reset,
this utility gets overwhelmed with the console output generated by the
EC on resets. Consume the output before proceeding.
Instead of printing a long set of dots (one per written/read block),
print a spinning wheel instead.
BRANCH=None
BUG=chrome-os-partner:15610
TEST=manual
. used the utility to program Snow EC both inside and outside
chroot, it succeeded.
Observed the failing attempt to set parity when running outside
chroot.
Observed spinning characters instead of stream of dots.
Change-Id: Id25595d35a2a3ca578639cebd508f599e618787c
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/42310
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
- EC Lib
This wraps Blizzard driverlib and implements the EC chip interface defined
by Google. See below diagram for architecture.
+--------------------+
| Host BIOS/OS |
+--------------------+
---- host interface ----
+--------------------+
| Google EC features |
+--------------------+
---- chip interface ---- The interface is defined in
src/platform/ec/chip_interface/*.
+--------------------+ But the real implementation is in EC Lib.
| EC Lib |
+--------------------+
| Blizzard low level |
| driver, the |
| driverlib. |
+--------------------+
Build Options
=============
- CONFIG_WATCHDOG_HELP
Try to detect a watchdog that is about to fire, and print a trace.
This is needed on STM32, where the independent watchdog has no early
warning feature and the windowed watchdog has a very short period.
- CONFIG_PANIC_HELP
Report extra information about a panic, such as the fault address,
here shown as bfar. This shows the reason for the fault and may help
to determine the cause.
=== EXCEPTION: 03 ====== xPSR: 01000000 ===========
r0 :0000000b r1 :00000047 r2 :60000000 r3 :200013dd
r4 :00000000 r5 :080053f4 r6 :200013d0 r7 :00000002
r8 :00000000 r9 :200013de r10:00000000 r11:00000000
r12:00000000 sp :200009a0 lr :08002b85 pc :08003a8a
Precise data bus error, Forced hard fault, Vector catch, bfar = 60000000
mmfs = 00008200, shcsr = 00000000, hfsr = 40000000, dfsr = 00000008
- CONFIG_ASSERT_HELP
Report assertion failures in a vebose manner to aid debugging. When
enabled an ASSERT() which fails will produce message in the form:
ASSERTION FAILURE '<expr>' in function() at file:line
- CONFIG_CONFIGURE_BOARD_LATE
Define this to call configure_board_late() after initial system init
is complete (and after GPIOs are set up).
- CONFIG_AC_POWER_STATUS
Monitor the state of the AC power input and drive out a GPIO to
the AP indicating this state. The GPIO will be driven low when
AC power is not connected, and high when it is connected. This
uses GPIO_AC_STATUS for this purpose.
- CONFIG_PMU_FORCE_FET
Force switching on and off the FETs on the PMU controlling various
power rails during AP startup and shutdown sequences.
This is mainly useful for bringup when we don't have the corresponding
sequences in the AP code.
- CONFIG_KEYBOARD_TEST
Turn on keyboard testing functionality. This enables a message which
received a list of keyscan events from the AP and processes them.
This will cause keypresses to appear on the AP through the same
mechanism as a normal keyboard press.