diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/boards/stm32mp.rst | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/Documentation/boards/stm32mp.rst b/Documentation/boards/stm32mp.rst index 774ede6e56..f93ec04eb0 100644 --- a/Documentation/boards/stm32mp.rst +++ b/Documentation/boards/stm32mp.rst @@ -1,11 +1,6 @@ STMicroelectronics STM32MP ========================== -.. note:: - - Support for the STM32MP architecure in barebox is still in progress. - Bootstrapping an OS from mainline barebox is not yet supported. - The STM32MP is a line of 32-bit ARM SoCs. They reuse peripherals of the STM32 line of microcontrollers and can have a STM32 MCU embedded as co-processor as well. @@ -68,8 +63,21 @@ An appropriate image for the boot media can be generated with following Image can then be flashed on e.g. a SD-Card. -TODO ----- - -* Extend barebox MMCI support to support the SDMMC2 -* Extend barebox DesignWare MAC support to support the stmmac +Boot source selection +--------------------- + +The STM32MP BootROM samples three boot pins at reset. Usually BOOT1 is +pulled down and BOOT0 and BOOT2 are connected to a 2P DIP switch:: + + +-------+ + BOOT2 | O O-- | + BOOT0 | N O-- | <---- SDMMC + +-------+ + +-------+ + BOOT2 | O O-- | + BOOT0 | N --O | <---- QSPI-NOR Flash + +-------+ + +-------+ + BOOT2 | O --O | + BOOT0 | N --O | <---- DFU on UART and USB OTG + +-------+ |