Add t530 boards #1072
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Add t530 boards #1072
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This was referenced Dec 5, 2021
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Have brought boards back up to 4.13 now that master has migrated. |
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…rs only) -CircleCI addition. -Removal of t530-flash, w530-flash boards and coreboot configs This is a merger of linuxboot#1071, linuxboot#1072 and linuxboot#1073 so that test builds are available over CircleCI until osresearch/master CircleCI gets unlocked.
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…rs only) -CircleCI addition. -Removal of t530-flash, w530-flash boards and coreboot configs This is a merger of linuxboot#1071, linuxboot#1072 and linuxboot#1073 so that test builds are available over CircleCI until osresearch/master CircleCI gets unlocked.
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…rs only) -CircleCI addition. -Removal of t530-flash, w530-flash boards, flash scripts and associated coreboot configs (no more legacy boards additions) This is a merger of linuxboot#1071, linuxboot#1072 and linuxboot#1073 so that test builds are available over CircleCI until osresearch/master CircleCI gets unlocked.
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Merged per #1074 |
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This is a cleaned up PR for adding t530 boards (from #1059) separating the t530 from t520 and w530 for clarity and ease of merging. Boards for flash, maximized and hotp-maximized have been added. I am not intending to support non-maximized boards.
Tested and working on both dGPU and iGPU-only boards. For dGPU Coreboot does not initialize the dGPU using these configs. I do not intend to add support for initializing the dGPU at this stage (it will require some changes to the config file and addition of blobs in the blob directory).
Boards currently point to Coreboot 4.8.1 as that is the default in heads:master, but 4.13 and 4.14 also tested and working.
Note: it can be tricky to properly read the 8MB chip on the T530 and W530 (see #996). This appears to be because the two chips share a power source on these boards (see generally). This is true for both the Rasbperry Pi and the CH431a. There appears to be two workarounds: (1) the Wake on Lan method (which has the one downside of only working once, because it is not supported by coreboot and is, therefore, not available after flashing); or (2) keeping the CMOS battery plugged in, which works also post-flashing. Both methods provide a little extra power to the board and appear to then be sufficient to get enough power to the 8MB chip to get a proper read of it. The Skulls team generally suggest using an external power source with the CH341a, and it's possible that this might help, but I have not tested.