tree 3c5fc5798cb4327a5ed9bcd56380457d2e51383d
parent e12b181b3a038ef789ed480d8acc506eaa396835
author Alpana Kumari <alpankum@in.ibm.com> 1598937896 -0500
committer Santosh Puranik <santosh.puranik@in.ibm.com> 1604336149 +0530

support multiple device trees in the same BMC image

This commit checks for current system type and if it is changed from last boot,
it loads new/appropriate device tree and reboot the system.

Tested-
=========================================
Test Case 1: first boot when env not defined

triggerred system vpd collection-
DBG: systemType is: 50001000
DBG: newDeviceTree: fw_dt2
U-Boot environment is not set. Updating...
DBG: rebooting...
root@rainier:/tmp# Connection to rain4bmc closed by remote host.
Connection to rain4bmc closed.
========================================
Test case 2-
triggerred system vpd collection-
DBG: systemType is: 50001001
DBG: newDeviceTree: fw_dt1
U-Boot environment is not updated. Updating...
DBG: rebooting...
root@rainier:/tmp# Connection to rain4bmc closed by remote host.
Connection to rain4bmc closed.

alpana07> ssh -k root@rain4bmc
root@rain4bmc's password:
printenv
...
bootside=b
devTree=fw_dt1
root@rainier:~#
=========================================
Test case 3-
triggerred system vpd collection again-
DBG: systemType is: 50001001
DBG: newDeviceTree: fw_dt1
U-Boot environment is Updated.

root@rainier:~# fw_printenv
...
bootside=b
devTree=fw_dt1
=========================================

Change-Id: I28bce8ced4a970e1818b4f4f613bd062647a4d3a
Signed-off-by: Alpana Kumari <alpankum@in.ibm.com>