Approved version. Approved on: 15:08, 30 March 2022
You are viewing an old version of this page. Return to the latest version.
| [unchecked revision] | [quality revision] |
|
m (→Exporting a block device)
|
m
|
| Applicable for | STM32MP13x lines, STM32MP15x lines |
This page explains how to use the U-Boot command "ums" to update an SD card or eMMC on the device.
In U-Boot, you can directly export the available block devices (sd/mmc/usb) as USB mass storage devices with ums command:
help ums
ums - Use the UMS [USB Mass Storage]
Usage:
ums <USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0
devtype defaults to mmc
This U-Boot command ums is infinite (a loop in USB treatments), and the U-Boot console is blocked until user enters a Ctrl-C.
On STMicroelectronics boards, the OTG USB controller device index is 0, SD card = "mmc 0" and, when available, eMMC = "mmc 1".
You can check the device connected on an SDMMC with the U-Boot command "mmc info".
You can also export a USB device connected to the USB host controller (USBH) = "usb 0".
Then execute one of the following commands:
Comments ums 0 mmc 0 --> start ums on SD card Ctrl-C
Comments ums 0 mmc 1 --> start ums on eMMC Ctrl-C
Comments usb start --> start USB host controller ums 0 usb 0 --> start ums on USB device 0 (USB key for example) Ctrl-C usb stop --> stop USB host controller
After a delay (of up to 15 seconds), the host sees the exported block device and you can use any command on the PC to access the partitions of the exported memory (dd, mount, cp, rsync). A Ctrl-C is needed to stop the command.
See also How to manually update bootloaders.
<noinclude>{{ApplicableFor |MPUs list=STM32MP13x, STM32MP15x |MPUs checklist=STM32MP13x,STM32MP15x }}</noinclude> This page explains how to use the [[U-Boot_overview#Commands|U-Boot command]] "<code>ums"</code> to update an SD card or eMMC on the device. == ums command == In U-Boot, you can directly export the available block devices (sd/mmc/usb) as USB mass storage devices with ums command: {{U-Boot$}} help ums ums - Use the UMS [USB Mass Storage] Usage: ums <USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0 devtype defaults to mmc This [[U-Boot_overview#Commands|U-Boot command]] <code>ums</code> is infinite (a loop in USB treatments), and the U-Boot console is blocked until user enters a Ctrl-C. == Exporting a block device == On STMicroelectronics boards, [[OTG_internal_peripheral| the OTG USB controller]] device index is 0, SD card = "mmc 0" and, when available, eMMC = "mmc 1".<br/>You can check the device connected on an [[SDMMC_internal_peripheral|SDMMC]] with the [[U-Boot_overview#Commands|U-Boot command]] "mmc info".<br/> You can also export a USB device connected to the [[USBH_internal_peripheral|USB host controller (USBH)]] = "usb 0". Then execute one of the following commands: {{Highlight|Comments}} {{U-Boot$}} ums 0 mmc 0 {{Highlight|--> start ums on SD card}} Ctrl-C {{Highlight|Comments}} {{U-Boot$}} ums 0 mmc 1 {{Highlight|--> start ums on eMMC}} Ctrl-C {{Highlight|Comments}} {{U-Boot$}} usb start {{Highlight|--> start USB host controller}} {{U-Boot$}} ums 0 usb 0 {{Highlight|--> start ums on USB device 0 (USB key for example)}} Ctrl-C {{U-Boot$}} usb stop {{Highlight|--> stop USB host controller}} After a delay (of up to 15 seconds), the host sees the exported block device and you can use any command on the PC to access the partitions of the exported memory (dd, mount, cp, rsync). A Ctrl-C is needed to stop the command. See also [[How to manually update bootloaders]]. <noinclude> [[Category:How_to_run_use_cases]]</noinclude>
| Line 3: | Line 3: | ||
|MPUs checklist=STM32MP13x,STM32MP15x |
|MPUs checklist=STM32MP13x,STM32MP15x |
||
}}</noinclude> |
}}</noinclude> |
||
| − | This page explains how to use the [[U-Boot_overview#Commands|U-Boot command]] |
+ | This page explains how to use the [[U-Boot_overview#Commands|U-Boot command]] <code>ums</code> to update an SD card or eMMC on the device. |
== ums command == |
== ums command == |
||