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Add a helper function to read the reg property from an unflattened
device tree.
It also factors out the common code into a new function called
`read_reg_prop`.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I7846eb8af390d709b0757262025cb819e9988699
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83457
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Now that the device tree code has been made available in libpayload, we
should reintroduce the node and property allocation optimization for
libpayload's memory allocator that was originally dropped when porting
this code from depthcharge to coreboot.
On a Qualcomm SC7180 unflattening a normal ChromeOS kernel device tree,
this saves roughly ~145ms. The total scratch space used is about ~1350
nodes and ~5200 properties, so we leave a little room to grow with the
constants hardcoded here.
Change-Id: I0f4d80a8b750febfb069b32ef47304ccecdc35af
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83208
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I990d74d9fff06b17ec8a6ee962955e4b0df8b907
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77970
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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