| Commit message (Collapse) | Author | Age | Files | Lines |
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On OpenPOWER machines, kernels missing the AST video driver can use the
existing 'Open Firmware' framebuffer device code to inherit an existing
framebuffer from Petitboot. This requires us to translate the 64-bit
address of the framebuffer 'back' into a PCI address and write it into
an assigned-addresses property in the device tree.
Bootstrapped-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Sam Mendoza-Jonas <sam@mendozajonas.com>
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The boot hooks may have altered the DTB in various ways, so add a final
(90-) boot hook to re-sort the dtb with `dtc -s`.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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On machines that use device-tree boot, they'll often set an early
console, defined by the linux,stdout property in the /chosen/ device
tree node.
This hook adds a facility for petitboot to set this, based on an NVRAM
setting.
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Provide an example for writing a pre-boot hook to update the dtb.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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