| - 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. |
