16 Jun
2014
16 Jun
'14
9:52 p.m.
On 06/12/2014 03:46 AM, Przemyslaw Marczak wrote:
This patch introduces new feature: initialization of the dfu bootloader entity from a separate environmental variable which can be set on a boot time.
By default, DFU always check environmental variable: $dfu_alt_info.
Changes:
- DFU will also look for environmental variable: $dfu_alt_bootloader
- if any of dfu_alt_* variable is properly defined, then function dfu_init_env_entities() will return success.
Use case: Some devices can boot from various media type (SD, eMMC, NAND, etc.) or some board configs are common for more than one board type. In a such case, bootloader is probably placed on a different devices or even offsets. So such DFU feature is welcome.
Why should the "dfu" command look at different environment variables? Whatever code dynamically sets the value of $dfu_alt_bootloader should simply set $dfu_alt_info instead.