arm64: idreg-override: use early FDT mapping in ID map

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Instead of calling into the kernel to map the FDT into the kernel page
tables before even calling start_kernel(), let's switch to the initial,
temporary mapping of the device tree that has been added to the ID map.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-16-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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Ard Biesheuvel 2022-06-24 17:06:45 +02:00 • committed by Will Deacon

parent f70b3a2332

commit a004393f45

2 changed files with 7 additions and 11 deletions

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arch/arm64/kernel/head.S

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17

arch/arm64/kernel/idreg-override.c

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