arm/google/chromebook-boot-flow.rst

1 .. SPDX-License-Identifier: GPL-2.0
16 - Board name, specified at depthcharge_ compile time. This is $(BOARD) below.
17 - Board revision number, determined at runtime (perhaps by reading GPIO
19 - SKU number, read from GPIO strappings at boot time. This is $(SKU) below.
23 - google,$(BOARD)-rev$(REV)-sku$(SKU)
24 - google,$(BOARD)-rev$(REV)
25 - google,$(BOARD)-sku$(SKU)
26 - google,$(BOARD)
31 Note that for some boards there may be extra board-specific logic to inject
35 find one that matches the most specific compatible. It will then look
37 matches the *second most* specific compatible, etc.
40 compatible string falls within a device tree's root compatible string array.
44 - "google,lazor-rev5-sku0", "google,lazor-rev4-sku0", "qcom,sc7180"
45 - "google,lazor", "qcom,sc7180"
48 "google,lazor-rev4-sku0" was the second compatible listed in that device tree.
49 This is because it is a more specific compatible than "google,lazor".
63 supporting the newest revision(s) of a board omits the "-rev{REV}"
64 compatible strings. When this is done then if you get a new board
65 revision and try to run old software on it then we'll at pick the