8 Dec
2014
8 Dec
'14
10:41 p.m.
On Tue, Nov 18, 2014 at 09:40:21PM -0700, Stephen Warren wrote:
Detect the board revision early during boot, and print the decoded model name.
Eventually, this information can be used for tasks such as:
- Allowing/preventing USB device mode; some models have a USB device on- board so only host mode makes sense. Others connect the SoC directly to the USB connector, so device-mode might make sense.
- The on-board USB hub/Ethernet requires different GPIOs to enable it, although luckily the default appears to be fine so far.
- The compute module contains an on-board eMMC device, so we could store the environment there. Other models use an SD card and so don't support saving the environment (unless we store it in a file on the FAT boot partition...)
Set $fdtfile based on this information. At present, the mainline Linux kernel doesn't contain a separate DTB for most models, but I hope that will change soon.
Signed-off-by: Stephen Warren swarren@wwwdotorg.org Reviewed-by: Simon Glass sjg@chromium.org Tested-by: Simon Glass sjg@chromium.org
Applied to u-boot/master, thanks!
--
Tom