[Bug 1934791] Re: SRU u-boot to focal to enable HiFive Unmatched booting

[William Wilson]

** Description changed:

  In order to boot Ubuntu 20.04 on the Unmatched, the version of u-boot
  currently in hirsute will need to be SRU'd to focal.
  
  Raspberry pi core and classic images will need to be tested with this
  new version of u-boot as well to ensure nothing was broken by the SRU.
+ 
+ [Impact]
+ 
+  * Without the hirsute version of u-boot, the HiFive Unmatched
+    will not boot focal
+ 
+ [Test Case]
+ 
+  * Attempt to boot the Unmatched with u-boot 2020.10+dfsg-1ubuntu0~20.04.2
+  * Note that it fails to boot
+  * Attempt to boot the Unmatched with the new version of u-boot
+  * Verify that u-boot is able to load the kernel
+  * Ensure u-boot can still boot on the Raspberry pi 2, 3, 3+, 
+    4 (8GB especially), and CM4
+ 
+ [Regression Potential]
+ 
+ There are multiple changes being SRU'd, but since we know they all work
+ in hirsute on these models the risk is fairly low. Attempts to boot all
+ the supported Raspberry pi models should still be made to ensure no
+ regression.

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https://bugs.launchpad.net/bugs/1934791

Title:
  SRU u-boot to focal to enable HiFive Unmatched booting

Status in u-boot package in Ubuntu:
  New

Bug description:
  In order to boot Ubuntu 20.04 on the Unmatched, the version of u-boot
  currently in hirsute will need to be SRU'd to focal.

  Raspberry pi core and classic images will need to be tested with this
  new version of u-boot as well to ensure nothing was broken by the SRU.

  [Impact]

   * Without the hirsute version of u-boot, the HiFive Unmatched
     will not boot focal

  [Test Case]

   * Attempt to boot the Unmatched with u-boot 2020.10+dfsg-1ubuntu0~20.04.2
   * Note that it fails to boot
   * Attempt to boot the Unmatched with the new version of u-boot
   * Verify that u-boot is able to load the kernel
   * Ensure u-boot can still boot on the Raspberry pi 2, 3, 3+, 
     4 (8GB especially), and CM4

  [Regression Potential]

  There are multiple changes being SRU'd, but since we know they all
  work in hirsute on these models the risk is fairly low. Attempts to
  boot all the supported Raspberry pi models should still be made to
  ensure no regression.

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